/* ============================================================
   Nokkeru Design System — app.css
   A layered CSS framework for the Shirokawa construction app.
   ============================================================ */

@layer reset, tokens, layout, components, utilities;

/* ============================================================
   LAYER: reset
   ============================================================ */
@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  body {
    min-height: 100dvh;
    font-family: var(--nk-font-sans);
    font-size: var(--nk-text-base);
    color: var(--nk-color-text);
    background-color: var(--nk-color-bg);
    line-height: var(--nk-leading-normal);
  }

  img,
  picture,
  video,
  canvas {
    display: block;
    max-width: 100%;
  }

  svg {
    display: inline-block;
    vertical-align: middle;
    flex-shrink: 0;
  }

  input,
  button,
  textarea,
  select {
    font: inherit;
    color: inherit;
  }

  button {
    cursor: pointer;
    background: none;
    border: none;
  }

  a {
    color: inherit;
    text-decoration: none;
  }

  ul,
  ol {
    list-style: none;
  }

  table {
    border-collapse: collapse;
    border-spacing: 0;
  }

  h1, h2, h3, h4, h5, h6 {
    font-size: inherit;
    font-weight: inherit;
    overflow-wrap: break-word;
  }

  p {
    overflow-wrap: break-word;
  }

  fieldset {
    border: none;
  }

  dialog {
    padding: 0;
  }

  :focus-visible {
    outline: 2px solid var(--nk-color-primary);
    outline-offset: 2px;
  }

  ::placeholder {
    color: var(--nk-color-text-muted);
    opacity: 1;
  }

  [hidden] {
    display: none;
  }
}

/* UA stylesheet overrides (must be outside @layer to beat browser defaults) */
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }

/* Button color overrides (must be outside @layer since button { color: inherit } is outside) */
.btn-nk-primary { color: #fff; }
.btn-nk-danger { color: #fff; }
.btn-nk-warning { color: #fff; }

/* Inline SVG icon component */
.nk-icon { display: inline-block; vertical-align: middle; flex-shrink: 0; }

/* ============================================================
   LAYER: tokens
   ============================================================ */
@layer tokens {
  :root {
    /* ---- Colors ---- */
    --nk-color-primary: #1e3a5f;
    --nk-color-primary-light: #2c5282;
    --nk-color-primary-lighter: #3b6ba5;
    --nk-color-primary-dark: #152a45;
    --nk-color-primary-bg: #e8eef5;

    --nk-color-success: #2f855a;
    --nk-color-success-light: #c6f6d5;
    --nk-color-success-dark: #22543d;
    --nk-color-success-bg: #f0fff4;

    --nk-color-warning: #c05621;
    --nk-color-warning-light: #fefcbf;
    --nk-color-warning-dark: #7b341e;
    --nk-color-warning-bg: #fffff0;

    --nk-color-danger: #c53030;
    --nk-color-danger-light: #fed7d7;
    --nk-color-danger-dark: #822727;
    --nk-color-danger-bg: #fff5f5;

    --nk-color-info: #2b6cb0;
    --nk-color-info-light: #bee3f8;
    --nk-color-info-dark: #1a365d;
    --nk-color-info-bg: #ebf8ff;

    --nk-color-text: #1a202c;
    --nk-color-text-secondary: #4a5568;
    --nk-color-text-muted: #a0aec0;
    --nk-color-text-inverse: #ffffff;

    --nk-color-bg: #f7fafc;
    --nk-color-bg-white: #ffffff;
    --nk-color-bg-muted: #edf2f7;
    --nk-color-bg-dark: #1e3a5f;

    --nk-color-border: #e2e8f0;
    --nk-color-border-dark: #cbd5e0;

    /* ---- Spacing ---- */
    --nk-space-1: 4px;
    --nk-space-2: 8px;
    --nk-space-3: 12px;
    --nk-space-4: 16px;
    --nk-space-5: 20px;
    --nk-space-6: 24px;
    --nk-space-8: 32px;
    --nk-space-10: 40px;
    --nk-space-12: 48px;

    /* ---- Typography ---- */
    --nk-font-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
    --nk-font-mono: "JetBrains Mono", "Fira Code", Consolas, monospace;

    --nk-text-xs: 0.75rem;
    --nk-text-sm: 0.875rem;
    --nk-text-base: 0.9375rem;
    --nk-text-lg: 1.125rem;
    --nk-text-xl: 1.25rem;
    --nk-text-2xl: 1.5rem;
    --nk-text-3xl: 1.875rem;

    --nk-leading-tight: 1.25;
    --nk-leading-normal: 1.6;
    --nk-leading-relaxed: 1.75;

    --nk-weight-normal: 400;
    --nk-weight-medium: 500;
    --nk-weight-semibold: 600;
    --nk-weight-bold: 700;

    /* ---- Radius ---- */
    --nk-radius-sm: 4px;
    --nk-radius-md: 6px;
    --nk-radius-lg: 8px;
    --nk-radius-xl: 12px;
    --nk-radius-full: 9999px;

    /* ---- Shadows ---- */
    --nk-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --nk-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    --nk-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.04);
    --nk-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.04);
    --nk-shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 8px 10px rgba(0, 0, 0, 0.04);

    /* ---- Transitions ---- */
    --nk-transition-fast: 150ms ease;
    --nk-transition-base: 250ms ease;
    --nk-transition-slow: 350ms ease;

    /* ---- Z-index ---- */
    --nk-z-dropdown: 100;
    --nk-z-sticky: 200;
    --nk-z-navbar: 300;
    --nk-z-sidebar: 250;
    --nk-z-modal-backdrop: 400;
    --nk-z-modal: 500;
    --nk-z-toast: 600;
    --nk-z-tooltip: 700;

    /* ---- Layout ---- */
    --nk-navbar-height: 52px;
    --nk-sidebar-collapsed: 56px;
    --nk-sidebar-expanded: 220px;
    --nk-bottom-nav-height: 56px;

    /* ---- Short aliases (used throughout layout/components) ---- */
    --nk-primary: var(--nk-color-primary);
    --nk-primary-light: var(--nk-color-primary-light);
    --nk-bg: var(--nk-color-bg);
    --nk-surface: var(--nk-color-bg-white);
    --nk-text: var(--nk-color-text);
    --nk-text-secondary: var(--nk-color-text-secondary);
    --nk-text-muted: var(--nk-color-text-muted);
    --nk-border: var(--nk-color-border);
    --nk-success: var(--nk-color-success);
    --nk-warning: var(--nk-color-warning);
    --nk-danger: var(--nk-color-danger);
    --nk-info: var(--nk-color-info);
    --nk-active-bg: var(--nk-color-primary-bg);
    --nk-font: var(--nk-font-sans);
    --nk-shadow-sm: var(--nk-shadow-sm);
    --nk-shadow-md: var(--nk-shadow-md);
    --nk-shadow-lg: var(--nk-shadow-lg);
    --nk-transition: var(--nk-transition-fast);
  }
}

/* ============================================================
   LAYER: layout
   ============================================================ */
@layer layout {
  /* ---- Navbar ---- */
  .nk-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nk-navbar-height);
    background-color: var(--nk-color-bg-dark);
    color: var(--nk-color-text-inverse);
    display: flex;
    align-items: center;
    padding: 0 var(--nk-space-4);
    z-index: var(--nk-z-navbar);
    box-shadow: var(--nk-shadow-md);
  }

  .nk-navbar__brand {
    font-size: var(--nk-text-lg);
    font-weight: var(--nk-weight-bold);
    white-space: nowrap;
    margin-right: var(--nk-space-6);
  }

  .nk-navbar__nav {
    display: flex;
    align-items: center;
    gap: var(--nk-space-1);
    flex: 1;
  }

  .nk-navbar__link {
    padding: var(--nk-space-2) var(--nk-space-3);
    border-radius: var(--nk-radius-md);
    font-size: var(--nk-text-sm);
    transition: background-color var(--nk-transition-fast);
    white-space: nowrap;
  }

  .nk-navbar__link:hover {
    background-color: rgba(255, 255, 255, 0.12);
  }

  .nk-navbar__link--active {
    background-color: rgba(255, 255, 255, 0.18);
  }

  .nk-navbar__actions {
    display: flex;
    align-items: center;
    gap: var(--nk-space-2);
    margin-left: auto;
  }

  .nk-navbar__toggle {
    display: none;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: var(--nk-radius-md);
    color: var(--nk-color-text-inverse);
  }

  .nk-navbar__toggle:hover {
    background-color: rgba(255, 255, 255, 0.12);
  }

  /* ---- Sidebar ---- */
  .nk-sidebar {
    position: fixed;
    top: var(--nk-navbar-height);
    left: 0;
    bottom: 0;
    width: var(--nk-sidebar-collapsed);
    background-color: var(--nk-color-bg-white);
    border-right: 1px solid var(--nk-color-border);
    z-index: var(--nk-z-sidebar);
    overflow: hidden;
    transition: width var(--nk-transition-base);
    box-shadow: var(--nk-shadow-sm);
  }

  .nk-sidebar:hover {
    width: var(--nk-sidebar-expanded);
  }

  .nk-sidebar__nav {
    display: flex;
    flex-direction: column;
    padding: var(--nk-space-2) 0;
  }

  .nk-sidebar__item {
    display: flex;
    align-items: center;
    gap: var(--nk-space-3);
    padding: var(--nk-space-3) var(--nk-space-4);
    color: var(--nk-color-text-secondary);
    white-space: nowrap;
    transition: background-color var(--nk-transition-fast), color var(--nk-transition-fast);
  }

  .nk-sidebar__item:hover {
    background-color: var(--nk-color-primary-bg);
    color: var(--nk-color-primary);
  }

  .nk-sidebar__item--active {
    color: var(--nk-color-primary);
    background-color: var(--nk-color-primary-bg);
    border-right: 3px solid var(--nk-color-primary);
  }

  .nk-sidebar__icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nk-sidebar__label {
    opacity: 0;
    transition: opacity var(--nk-transition-base);
    font-size: var(--nk-text-sm);
  }

  .nk-sidebar:hover .nk-sidebar__label {
    opacity: 1;
  }

  .nk-sidebar__divider {
    height: 1px;
    background-color: var(--nk-color-border);
    margin: var(--nk-space-2) var(--nk-space-4);
  }

  /* ---- Main content ---- */
  .nk-main {
    margin-top: var(--nk-navbar-height);
    margin-left: var(--nk-sidebar-collapsed);
    padding: var(--nk-space-6);
    min-height: calc(100dvh - var(--nk-navbar-height));
    transition: margin-left var(--nk-transition-base);
  }

  .nk-main--full {
    margin-left: 0;
  }

  /* ---- Mobile bottom nav ---- */
  .nk-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--nk-bottom-nav-height);
    background-color: var(--nk-color-bg-white);
    border-top: 1px solid var(--nk-color-border);
    z-index: var(--nk-z-navbar);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.06);
  }

  .nk-bottom-nav__list {
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 100%;
  }

  .nk-bottom-nav__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--nk-space-1);
    font-size: var(--nk-text-xs);
    color: var(--nk-color-text-muted);
    transition: color var(--nk-transition-fast);
  }

  .nk-bottom-nav__item--active {
    color: var(--nk-color-primary);
  }

  .nk-bottom-nav__item:hover {
    color: var(--nk-color-primary);
  }

  .nk-bottom-nav__icon {
    width: 22px;
    height: 22px;
  }

  /* ---- CSS Grid helpers ---- */
  .nk-grid {
    display: grid;
    gap: var(--nk-space-4);
  }

  .nk-grid--2 { grid-template-columns: repeat(2, 1fr); }
  .nk-grid--3 { grid-template-columns: repeat(3, 1fr); }
  .nk-grid--4 { grid-template-columns: repeat(4, 1fr); }
  .nk-grid--6 { grid-template-columns: repeat(6, 1fr); }
  .nk-grid--12 { grid-template-columns: repeat(12, 1fr); }

  .nk-grid--auto-fill {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }

  .nk-grid--auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .nk-col-span-2 { grid-column: span 2; }
  .nk-col-span-3 { grid-column: span 3; }
  .nk-col-span-4 { grid-column: span 4; }
  .nk-col-span-6 { grid-column: span 6; }
  .nk-col-span-12 { grid-column: span 12; }
  .nk-row-span-2 { grid-row: span 2; }
  .nk-row-span-3 { grid-row: span 3; }

  /* ---- Responsive: mobile ---- */
  @media (max-width: 767.98px) {
    .nk-navbar__nav {
      display: none;
    }

    .nk-navbar__toggle {
      display: flex;
    }

    .nk-sidebar {
      display: none;
    }

    .nk-main {
      margin-left: 0;
      padding: var(--nk-space-4);
      padding-bottom: calc(var(--nk-bottom-nav-height) + var(--nk-space-4));
    }

    .nk-bottom-nav {
      display: block;
    }

    .nk-grid--2,
    .nk-grid--3,
    .nk-grid--4 {
      grid-template-columns: 1fr;
    }
  }

  /* ---- Responsive: tablet ---- */
  @media (min-width: 768px) and (max-width: 1023.98px) {
    .nk-grid--4 {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  /* ---- Bootstrap grid compat ---- */
  .container-fluid {
    width: 100%;
    padding-right: var(--nk-space-4);
    padding-left: var(--nk-space-4);
    margin-right: auto;
    margin-left: auto;
  }

  .row {
    display: flex;
    flex-wrap: wrap;
    margin-right: calc(var(--nk-space-4) * -0.5);
    margin-left: calc(var(--nk-space-4) * -0.5);
  }

  .row > * {
    flex-shrink: 0;
    width: 100%;
    max-width: 100%;
    padding-right: calc(var(--nk-space-4) * 0.5);
    padding-left: calc(var(--nk-space-4) * 0.5);
  }

  .col { flex: 1 0 0%; }
  .col-auto { flex: 0 0 auto; width: auto; }
  .col-1  { flex: 0 0 auto; width: 8.333333%; }
  .col-2  { flex: 0 0 auto; width: 16.666667%; }
  .col-3  { flex: 0 0 auto; width: 25%; }
  .col-4  { flex: 0 0 auto; width: 33.333333%; }
  .col-5  { flex: 0 0 auto; width: 41.666667%; }
  .col-6  { flex: 0 0 auto; width: 50%; }
  .col-7  { flex: 0 0 auto; width: 58.333333%; }
  .col-8  { flex: 0 0 auto; width: 66.666667%; }
  .col-9  { flex: 0 0 auto; width: 75%; }
  .col-10 { flex: 0 0 auto; width: 83.333333%; }
  .col-11 { flex: 0 0 auto; width: 91.666667%; }
  .col-12 { flex: 0 0 auto; width: 100%; }

  @media (min-width: 576px) {
    .col-sm-1  { flex: 0 0 auto; width: 8.333333%; }
    .col-sm-2  { flex: 0 0 auto; width: 16.666667%; }
    .col-sm-3  { flex: 0 0 auto; width: 25%; }
    .col-sm-4  { flex: 0 0 auto; width: 33.333333%; }
    .col-sm-5  { flex: 0 0 auto; width: 41.666667%; }
    .col-sm-6  { flex: 0 0 auto; width: 50%; }
    .col-sm-7  { flex: 0 0 auto; width: 58.333333%; }
    .col-sm-8  { flex: 0 0 auto; width: 66.666667%; }
    .col-sm-9  { flex: 0 0 auto; width: 75%; }
    .col-sm-10 { flex: 0 0 auto; width: 83.333333%; }
    .col-sm-11 { flex: 0 0 auto; width: 91.666667%; }
    .col-sm-12 { flex: 0 0 auto; width: 100%; }
  }

  @media (min-width: 768px) {
    .col-md-1  { flex: 0 0 auto; width: 8.333333%; }
    .col-md-2  { flex: 0 0 auto; width: 16.666667%; }
    .col-md-3  { flex: 0 0 auto; width: 25%; }
    .col-md-4  { flex: 0 0 auto; width: 33.333333%; }
    .col-md-5  { flex: 0 0 auto; width: 41.666667%; }
    .col-md-6  { flex: 0 0 auto; width: 50%; }
    .col-md-7  { flex: 0 0 auto; width: 58.333333%; }
    .col-md-8  { flex: 0 0 auto; width: 66.666667%; }
    .col-md-9  { flex: 0 0 auto; width: 75%; }
    .col-md-10 { flex: 0 0 auto; width: 83.333333%; }
    .col-md-11 { flex: 0 0 auto; width: 91.666667%; }
    .col-md-12 { flex: 0 0 auto; width: 100%; }
  }

  @media (min-width: 992px) {
    .col-lg-1  { flex: 0 0 auto; width: 8.333333%; }
    .col-lg-2  { flex: 0 0 auto; width: 16.666667%; }
    .col-lg-3  { flex: 0 0 auto; width: 25%; }
    .col-lg-4  { flex: 0 0 auto; width: 33.333333%; }
    .col-lg-5  { flex: 0 0 auto; width: 41.666667%; }
    .col-lg-6  { flex: 0 0 auto; width: 50%; }
    .col-lg-7  { flex: 0 0 auto; width: 58.333333%; }
    .col-lg-8  { flex: 0 0 auto; width: 66.666667%; }
    .col-lg-9  { flex: 0 0 auto; width: 75%; }
    .col-lg-10 { flex: 0 0 auto; width: 83.333333%; }
    .col-lg-11 { flex: 0 0 auto; width: 91.666667%; }
    .col-lg-12 { flex: 0 0 auto; width: 100%; }
  }

  @media (min-width: 1200px) {
    .col-xl-1  { flex: 0 0 auto; width: 8.333333%; }
    .col-xl-2  { flex: 0 0 auto; width: 16.666667%; }
    .col-xl-3  { flex: 0 0 auto; width: 25%; }
    .col-xl-4  { flex: 0 0 auto; width: 33.333333%; }
    .col-xl-5  { flex: 0 0 auto; width: 41.666667%; }
    .col-xl-6  { flex: 0 0 auto; width: 50%; }
    .col-xl-7  { flex: 0 0 auto; width: 58.333333%; }
    .col-xl-8  { flex: 0 0 auto; width: 66.666667%; }
    .col-xl-9  { flex: 0 0 auto; width: 75%; }
    .col-xl-10 { flex: 0 0 auto; width: 83.333333%; }
    .col-xl-11 { flex: 0 0 auto; width: 91.666667%; }
    .col-xl-12 { flex: 0 0 auto; width: 100%; }
  }

  /* Skip navigation link */
  .nk-skip-nav {
      position: absolute;
      top: -100%;
      left: 16px;
      z-index: 9999;
      padding: 8px 16px;
      background: var(--nk-primary);
      color: #fff;
      border-radius: 0 0 8px 8px;
      font-size: 0.875rem;
      text-decoration: none;
      transition: top 0.2s ease;
  }
  .nk-skip-nav:focus {
      top: 0;
      color: #fff;
  }

  /* ===== App Layout ===== */
  body {
      padding-top: 52px;
      background: var(--nk-bg);
      font-family: var(--nk-font);
      color: var(--nk-text);
  }

  /* Top navbar */
  .navbar { display: flex; align-items: center; height: 52px; }
  .navbar.fixed-top { position: fixed; top: 0; left: 0; right: 0; z-index: 1030; }
  .navbar-dark { background: var(--nk-primary); color: #fff; }
  .app-navbar {
      position: fixed; top: 0; left: 0; right: 0; z-index: 1030;
      display: flex; align-items: center; height: 52px;
      background: var(--nk-primary); color: #fff;
      box-shadow: 0 1px 3px rgba(0,0,0,0.12);
  }
  .navbar-container {
      display: flex; align-items: center; justify-content: space-between;
      width: 100%; padding: 0 16px; height: 100%;
  }
  .navbar .container-fluid { display: flex; align-items: center; width: 100%; padding: 0 16px; }
  .navbar-brand { display: flex; align-items: center; gap: 8px; color: #fff; font-weight: 600; font-size: 0.9375rem; }
  .brand-icon { display: flex; align-items: center; }
  .navbar-toggler { background: none; border: none; color: #fff; padding: 8px; cursor: pointer; }
  .navbar-toggler:focus { outline: 2px solid rgba(255,255,255,0.5); }
  .navbar-actions { display: flex; align-items: center; gap: 4px; }

  /* Sidebar */
  .app-sidebar {
      position: fixed;
      top: 52px;
      left: 0;
      bottom: 0;
      width: 240px;
      background: #fff;
      border-right: 1px solid var(--nk-border);
      overflow-y: auto;
      overflow-x: hidden;
      z-index: 1020;
  }
  .sidebar-sticky { padding: 12px 8px; }

  /* Sidebar nav links — always expanded with text */
  .sidebar-nav { list-style: none; padding: 0; margin: 0; }
  .sidebar-nav-item { margin-bottom: 2px; }
  .sidebar-nav-link {
      display: flex;
      align-items: center;
      width: 100%;
      padding: 9px 12px;
      gap: 10px;
      font-size: 0.8125rem;
      font-weight: 500;
      color: var(--nk-text);
      transition: background 0.15s ease;
      border-radius: 8px;
      text-decoration: none;
  }
  .sidebar-nav-link > svg, .sidebar-nav-link > .nk-icon {
      flex-shrink: 0;
      width: 18px;
      min-width: 18px;
      height: 18px;
  }
  .sidebar-nav-link > span {
      white-space: nowrap;
  }
  .sidebar-nav-link:hover { background: var(--nk-bg); color: var(--nk-primary); }
  .sidebar-nav-link.active {
      background: var(--nk-active-bg);
      color: var(--nk-primary);
      font-weight: 600;
  }

  /* Sidebar submenus */
  .sidebar-submenu { list-style: none; padding: 0; margin: 0; }
  .sidebar-submenu.show { margin-left: 18px; padding-left: 10px; border-left: 2px solid var(--nk-border); }
  .sidebar-nav-sublink { display: flex; align-items: center; gap: 8px; padding: 7px 12px; font-size: 0.75rem; color: var(--nk-text-secondary); transition: color 0.15s ease, background 0.15s ease; text-decoration: none; border-radius: 6px; }
  .sidebar-nav-sublink:hover { color: var(--nk-primary); background: var(--nk-bg); }
  .sidebar-nav-sublink.active { color: var(--nk-primary); font-weight: 600; }

  /* Sidebar footer */
  .sidebar-footer { padding-top: 8px; border-top: 1px solid var(--nk-border); margin-top: 8px; }

  /* Sidebar badge */
  .sidebar-badge { background: var(--nk-danger); color: #fff; font-size: 0.625rem; padding: 1px 6px; border-radius: 9999px; margin-left: auto; flex-shrink: 0; }

  /* Main content */
  .col-12.col-md-9.col-lg-10, main#main-content {
      margin-left: 240px;
      padding: 24px 32px;
      min-height: calc(100vh - 52px);
  }

  /* Offcanvas (Bootstrap JS compat) */
  .offcanvas { position: fixed; top: 0; bottom: 0; left: 0; width: 280px; background: #fff; z-index: 1050; transform: translateX(-100%); transition: transform 0.3s ease; display: flex; flex-direction: column; }
  .offcanvas.show, .offcanvas.showing { transform: translateX(0); }
  .offcanvas.hiding { transform: translateX(-100%); }
  .offcanvas-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 1040; }
  .offcanvas-header { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; background: var(--nk-primary); color: #fff; flex-shrink: 0; }
  .offcanvas-body { padding: 0; overflow-y: auto; flex: 1; min-height: 0; }
  .btn-close { background: none; border: none; font-size: 1.25rem; cursor: pointer; color: inherit; opacity: 0.8; }
  .btn-close-white { color: #fff; filter: none; }
  .offcanvas-start { /* left-aligned - default positioning already handled by .offcanvas */ }
  .offcanvas-title { display: flex; align-items: center; gap: 8px; font-size: 1rem; font-weight: 600; margin: 0; }
  .offcanvas-brand-icon { display: flex; align-items: center; }

  /* Sidebar mobile wrapper & user card */
  .sidebar-wrapper { display: flex; flex-direction: column; height: 100%; }
  .sidebar-user-card { display: flex; align-items: center; gap: 12px; padding: 16px; border-bottom: 1px solid var(--nk-border); }
  .user-card-avatar { width: 36px; height: 36px; background: var(--nk-bg); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: var(--nk-text-secondary); flex-shrink: 0; }
  .user-card-info { min-width: 0; }
  .user-card-name { font-size: 0.875rem; font-weight: 600; color: var(--nk-text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .user-card-email { font-size: 0.75rem; color: var(--nk-text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

  /* Dropdown (Bootstrap JS compat) */
  .dropdown { position: relative; }
  .dropdown-menu { position: absolute; top: 100%; right: 0; min-width: 200px; background: #fff; color: var(--nk-text); border: 1px solid var(--nk-border); border-radius: 8px; box-shadow: var(--nk-shadow-lg); padding: 4px 0; display: none; z-index: 1050; }
  .dropdown-menu.show { display: block; }
  .dropdown-item { display: flex; align-items: center; gap: 8px; padding: 8px 16px; font-size: 0.875rem; color: var(--nk-text); }
  .dropdown-item:hover { background: var(--nk-bg); }
  .dropdown-divider { border-top: 1px solid var(--nk-border); margin: 4px 0; }

  /* Collapse (Bootstrap JS compat) */
  .collapse { display: none; }
  .collapse.show { display: block; }

  /* Mobile responsive */
  @media (max-width: 767.98px) {
      .app-sidebar, .d-none.d-md-block { display: none; }
      .col-12.col-md-9.col-lg-10, main#main-content { margin-left: 0; padding: 12px 16px; }
      .navbar-toggler { display: block; }
      .nk-bottom-nav { display: flex; }
  }
  @media (min-width: 768px) {
      .navbar-toggler { display: none; }
      .d-none.d-md-block { display: block; }
      .nk-bottom-nav { display: none; }
  }

  /* Bottom nav */
  .nk-bottom-nav {
      display: none;
      position: fixed; bottom: 0; left: 0; right: 0;
      background: #fff;
      border-top: 1px solid var(--nk-border);
      justify-content: space-around;
      padding: 4px 0 env(safe-area-inset-bottom, 0);
      z-index: 1030;
  }
  .nk-bottom-nav-item {
      display: flex; flex-direction: column; align-items: center;
      padding: 6px 0; font-size: 0.625rem; color: var(--nk-text-secondary);
      min-width: 64px;
  }
  .nk-bottom-nav-item.active { color: var(--nk-primary); }
  .nk-bottom-nav-icon { font-size: 1.25rem; }

  /* User dropdown in navbar */
  .user-dropdown { position: relative; }
  .user-dropdown-toggle {
      background: none; border: none; color: #fff;
      display: flex; align-items: center; gap: 8px;
      padding: 6px 10px; cursor: pointer; font-size: 0.875rem;
      border-radius: 8px; transition: background 0.15s ease;
  }
  .user-dropdown-toggle:hover { background: rgba(255,255,255,0.1); }
  .user-name { font-weight: 500; }
  .chevron-icon { font-size: 0.625rem; opacity: 0.7; }
  .user-avatar-initials {
      display: flex; align-items: center; justify-content: center;
      width: 32px; height: 32px; border-radius: 50%;
      background: rgba(255,255,255,0.2); font-size: 0.8125rem; font-weight: 600; color: #fff;
  }
  .user-dropdown-menu {
      min-width: 220px;
      margin-top: 8px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.12);
  }
  .dropdown-user-info { padding: 12px 16px; border-bottom: 1px solid var(--nk-border); }
  .user-info-name { font-weight: 600; font-size: 0.9375rem; color: var(--nk-text); }
  .user-info-meta { font-size: 0.75rem; color: var(--nk-text-secondary); margin-top: 2px; }

  /* Notification dropdown panel */
  .notification-bell-container { position: relative; }
  .notification-bell-btn {
      background: none; border: none; color: #fff;
      padding: 8px; cursor: pointer; position: relative;
      display: flex; align-items: center; justify-content: center;
      border-radius: 8px; transition: background 0.15s ease;
  }
  .notification-bell-btn:hover { background: rgba(255,255,255,0.1); }
  .notification-badge {
      position: absolute; top: 2px; right: 2px;
      background: var(--nk-danger); color: #fff;
      font-size: 0.5625rem; font-weight: 700;
      min-width: 16px; height: 16px;
      padding: 0 4px; border-radius: 9999px;
      display: flex; align-items: center; justify-content: center;
      line-height: 1;
  }
  .notification-dropdown {
      min-width: 340px; max-width: 380px;
      max-height: 480px; overflow-y: auto;
      padding: 0;
      position: absolute;
      top: 100%;
      right: 0;
      left: auto;
      margin-top: 8px;
  }
  .notification-dropdown-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: 12px 16px; border-bottom: 1px solid var(--nk-border);
      font-weight: 600; font-size: 0.875rem;
      color: var(--nk-text);
  }
  .notification-header-left { display: flex; align-items: center; gap: 8px; color: var(--nk-text); }
  .notification-list { padding: 0; margin: 0; list-style: none; }
  .notification-item {
      display: flex; gap: 12px; padding: 12px 16px;
      border-bottom: 1px solid var(--nk-border);
      transition: background 0.15s ease; cursor: pointer;
      color: var(--nk-text);
  }
  .notification-item:hover { background: var(--nk-bg); }
  .notification-item:last-child { border-bottom: none; }
  .notification-unread { background: #f0f7ff; }
  .notification-icon-wrapper {
      width: 36px; height: 36px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0; background: var(--nk-bg);
  }
  .notification-icon-unread { background: #dbeafe; color: var(--nk-primary); }
  .notification-content { flex: 1; min-width: 0; }
  .notification-title { font-size: 0.8125rem; font-weight: 600; margin-bottom: 2px; color: var(--nk-text); }
  .notification-message { font-size: 0.75rem; color: var(--nk-text-secondary); line-height: 1.4; }
  .notification-time { font-size: 0.6875rem; color: var(--nk-text-muted); margin-top: 4px; }
  .notification-new-badge {
      display: inline-flex; align-items: center; justify-content: center;
      padding: 2px 6px;
      background: var(--nk-primary); color: #fff;
      border-radius: 4px; font-size: 0.5625rem; font-weight: 700;
      letter-spacing: 0.05em;
      white-space: nowrap; align-self: flex-start;
      margin-top: 2px; flex-shrink: 0;
  }
  /* 通知アイテムのレイアウト修正 */
  .notification-item { align-items: flex-start; }

  /* 「全て既読」ボタン */
  .mark-all-read-btn {
      background: none; border: 1px solid var(--nk-color-border);
      color: var(--nk-color-primary); font-size: 0.75rem; font-weight: 500;
      padding: 4px 10px; border-radius: 6px; cursor: pointer;
      display: flex; align-items: center; gap: 4px;
      transition: background 0.15s ease; white-space: nowrap;
  }
  .mark-all-read-btn:hover { background: var(--nk-bg); }
  .mark-all-read-btn svg { width: 14px; height: 14px; color: var(--nk-color-primary); }
  .notification-dropdown-footer {
      padding: 10px 16px; border-top: 1px solid var(--nk-border);
      text-align: center; font-size: 0.8125rem;
  }
  .notification-dropdown-footer a { color: var(--nk-primary); }

  /* Notification bell */
  .notification-bell, [id^="notification-bell"] button {
      background: none; border: none; color: #fff;
      padding: 8px; cursor: pointer; position: relative; font-size: 1.25rem;
  }
  .notification-bell .badge, .notification-badge,
  [id^="notification-bell"] .badge {
      position: absolute; top: 0; right: -2px;
      background: var(--nk-danger); color: #fff;
      font-size: 0.5625rem; padding: 2px 5px; border-radius: 9999px;
      min-width: 18px; text-align: center;
  }

  /* Mobile menu toggle */
  .mobile-menu-toggle {
      background: none; border: none; color: #fff;
      padding: 8px; cursor: pointer; font-size: 1.5rem;
      display: flex; align-items: center;
  }
}

/* ============================================================
   LAYER: components
   ============================================================ */
@layer components {

  /* ---- Buttons ---- */
  .nk-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--nk-space-2);
    padding: var(--nk-space-2) var(--nk-space-4);
    font-size: var(--nk-text-sm);
    font-weight: var(--nk-weight-medium);
    line-height: 1.5;
    border-radius: var(--nk-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color var(--nk-transition-fast),
                border-color var(--nk-transition-fast),
                box-shadow var(--nk-transition-fast),
                color var(--nk-transition-fast);
    white-space: nowrap;
    text-decoration: none;
    user-select: none;
    vertical-align: middle;
  }

  .nk-btn:disabled,
  .nk-btn[aria-disabled="true"] {
    opacity: 0.55;
    pointer-events: none;
  }

  .nk-btn--primary {
    background-color: var(--nk-color-primary);
    color: var(--nk-color-text-inverse);
  }

  .nk-btn--primary:hover {
    background-color: var(--nk-color-primary-light);
  }

  .nk-btn--primary:active {
    background-color: var(--nk-color-primary-dark);
  }

  .nk-btn--success {
    background-color: var(--nk-color-success);
    color: var(--nk-color-text-inverse);
  }

  .nk-btn--success:hover {
    background-color: #38a169;
  }

  .nk-btn--success:active {
    background-color: var(--nk-color-success-dark);
  }

  .nk-btn--danger {
    background-color: var(--nk-color-danger);
    color: var(--nk-color-text-inverse);
  }

  .nk-btn--danger:hover {
    background-color: #e53e3e;
  }

  .nk-btn--danger:active {
    background-color: var(--nk-color-danger-dark);
  }

  .nk-btn--warning {
    background-color: var(--nk-color-warning);
    color: var(--nk-color-text-inverse);
  }

  .nk-btn--warning:hover {
    background-color: #dd6b20;
  }

  .nk-btn--warning:active {
    background-color: var(--nk-color-warning-dark);
  }

  .nk-btn--outline {
    background-color: transparent;
    border-color: var(--nk-color-border-dark);
    color: var(--nk-color-text);
  }

  .nk-btn--outline:hover {
    background-color: var(--nk-color-bg-muted);
  }

  .nk-btn--outline-primary {
    background-color: transparent;
    border-color: var(--nk-color-primary);
    color: var(--nk-color-primary);
  }

  .nk-btn--outline-primary:hover {
    background-color: var(--nk-color-primary);
    color: var(--nk-color-text-inverse);
  }

  .nk-btn--ghost {
    background-color: transparent;
    color: var(--nk-color-primary);
  }

  .nk-btn--ghost:hover {
    background-color: var(--nk-color-primary-bg);
  }

  .nk-btn--sm {
    padding: var(--nk-space-1) var(--nk-space-3);
    font-size: var(--nk-text-xs);
  }

  .nk-btn--lg {
    padding: var(--nk-space-3) var(--nk-space-6);
    font-size: var(--nk-text-base);
  }

  .nk-btn--block {
    display: flex;
    width: 100%;
  }

  .nk-btn--icon {
    padding: var(--nk-space-2);
    line-height: 1;
  }

  .nk-btn-group {
    display: inline-flex;
  }

  .nk-btn-group .nk-btn {
    border-radius: 0;
  }

  .nk-btn-group .nk-btn:first-child {
    border-radius: var(--nk-radius-md) 0 0 var(--nk-radius-md);
  }

  .nk-btn-group .nk-btn:last-child {
    border-radius: 0 var(--nk-radius-md) var(--nk-radius-md) 0;
  }

  /* ---- Cards ---- */
  .nk-card {
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border);
    border-radius: var(--nk-radius-lg);
    box-shadow: var(--nk-shadow-xs);
    overflow: hidden;
  }

  .nk-card__header {
    padding: var(--nk-space-4) var(--nk-space-5);
    border-bottom: 1px solid var(--nk-color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--nk-space-3);
  }

  .nk-card__title {
    font-size: var(--nk-text-base);
    font-weight: var(--nk-weight-semibold);
    color: var(--nk-color-text);
  }

  .nk-card__body {
    padding: var(--nk-space-5);
  }

  .nk-card__footer {
    padding: var(--nk-space-4) var(--nk-space-5);
    border-top: 1px solid var(--nk-color-border);
    background-color: var(--nk-color-bg);
  }

  .nk-card--hover:hover {
    box-shadow: var(--nk-shadow-md);
    border-color: var(--nk-color-border-dark);
  }

  .nk-card--flush .nk-card__body {
    padding: 0;
  }

  /* ---- Forms ---- */
  .nk-label, .form-label-nokkeru {
    display: block;
    font-size: var(--nk-text-sm);
    font-weight: var(--nk-weight-medium);
    color: var(--nk-color-text);
    margin-bottom: var(--nk-space-1);
  }

  .nk-label--required::after {
    content: " *";
    color: var(--nk-color-danger);
  }

  .nk-input {
    display: block;
    width: 100%;
    padding: var(--nk-space-2) var(--nk-space-3);
    font-size: var(--nk-text-sm);
    line-height: 1.5;
    color: var(--nk-color-text);
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border-dark);
    border-radius: var(--nk-radius-md);
    transition: border-color var(--nk-transition-fast), box-shadow var(--nk-transition-fast);
    appearance: none;
  }

  .nk-input:focus {
    border-color: var(--nk-color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
    outline: none;
  }

  .nk-input:disabled,
  .nk-input[readonly] {
    background-color: var(--nk-color-bg-muted);
    opacity: 0.7;
    cursor: not-allowed;
  }

  .nk-input--error {
    border-color: var(--nk-color-danger);
  }

  .nk-input--error:focus {
    box-shadow: 0 0 0 3px rgba(197, 48, 48, 0.12);
  }

  .nk-input--sm {
    padding: var(--nk-space-1) var(--nk-space-2);
    font-size: var(--nk-text-xs);
  }

  .nk-input--lg {
    padding: var(--nk-space-3) var(--nk-space-4);
    font-size: var(--nk-text-base);
  }

  .nk-select {
    display: block;
    width: 100%;
    padding: var(--nk-space-2) var(--nk-space-8) var(--nk-space-2) var(--nk-space-3);
    font-size: var(--nk-text-sm);
    line-height: 1.5;
    color: var(--nk-color-text);
    background-color: var(--nk-color-bg-white);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--nk-space-3) center;
    background-size: 14px 10px;
    border: 1px solid var(--nk-color-border-dark);
    border-radius: var(--nk-radius-md);
    appearance: none;
    transition: border-color var(--nk-transition-fast), box-shadow var(--nk-transition-fast);
  }

  .nk-select:focus {
    border-color: var(--nk-color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
    outline: none;
  }

  .nk-textarea {
    display: block;
    width: 100%;
    padding: var(--nk-space-2) var(--nk-space-3);
    font-size: var(--nk-text-sm);
    line-height: 1.5;
    color: var(--nk-color-text);
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border-dark);
    border-radius: var(--nk-radius-md);
    resize: vertical;
    min-height: 80px;
    transition: border-color var(--nk-transition-fast), box-shadow var(--nk-transition-fast);
  }

  .nk-textarea:focus {
    border-color: var(--nk-color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
    outline: none;
  }

  .nk-checkbox,
  .nk-radio {
    display: inline-flex;
    align-items: center;
    gap: var(--nk-space-2);
    font-size: var(--nk-text-sm);
    cursor: pointer;
  }

  .nk-form-group {
    margin-bottom: var(--nk-space-4);
  }

  .nk-form-text {
    font-size: var(--nk-text-xs);
    color: var(--nk-color-text-muted);
    margin-top: var(--nk-space-1);
  }

  .nk-form-error {
    font-size: var(--nk-text-xs);
    color: var(--nk-color-danger);
    margin-top: var(--nk-space-1);
  }

  .nk-input-group {
    display: flex;
    align-items: stretch;
  }

  .nk-input-group .nk-input {
    border-radius: 0;
  }

  .nk-input-group .nk-input:first-child {
    border-radius: var(--nk-radius-md) 0 0 var(--nk-radius-md);
  }

  .nk-input-group .nk-input:last-child {
    border-radius: 0 var(--nk-radius-md) var(--nk-radius-md) 0;
  }

  .nk-input-group__addon {
    display: flex;
    align-items: center;
    padding: var(--nk-space-2) var(--nk-space-3);
    font-size: var(--nk-text-sm);
    background-color: var(--nk-color-bg-muted);
    border: 1px solid var(--nk-color-border-dark);
    white-space: nowrap;
  }

  /* ---- Badges ---- */
  .nk-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--nk-space-2);
    font-size: var(--nk-text-xs);
    font-weight: var(--nk-weight-medium);
    line-height: 1.4;
    border-radius: var(--nk-radius-full);
    white-space: nowrap;
    vertical-align: middle;
  }

  .nk-badge--primary {
    background-color: var(--nk-color-primary-bg);
    color: var(--nk-color-primary);
  }

  .nk-badge--success {
    background-color: var(--nk-color-success-bg);
    color: var(--nk-color-success);
  }

  .nk-badge--warning {
    background-color: var(--nk-color-warning-bg);
    color: var(--nk-color-warning);
  }

  .nk-badge--danger {
    background-color: var(--nk-color-danger-bg);
    color: var(--nk-color-danger);
  }

  .nk-badge--info {
    background-color: var(--nk-color-info-bg);
    color: var(--nk-color-info);
  }

  .nk-badge--neutral {
    background-color: var(--nk-color-bg-muted);
    color: var(--nk-color-text-secondary);
  }

  .nk-badge--solid-primary {
    background-color: var(--nk-color-primary);
    color: var(--nk-color-text-inverse);
  }

  .nk-badge--solid-success {
    background-color: var(--nk-color-success);
    color: var(--nk-color-text-inverse);
  }

  .nk-badge--solid-danger {
    background-color: var(--nk-color-danger);
    color: var(--nk-color-text-inverse);
  }

  .nk-badge--dot::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: var(--nk-radius-full);
    background-color: currentColor;
    margin-right: var(--nk-space-1);
  }

  /* ---- Tables ---- */
  .nk-table {
    width: 100%;
    font-size: var(--nk-text-sm);
    text-align: left;
  }

  .nk-table thead {
    background-color: var(--nk-color-bg);
  }

  .nk-table th {
    padding: var(--nk-space-3) var(--nk-space-4);
    font-weight: var(--nk-weight-semibold);
    color: var(--nk-color-text-secondary);
    font-size: var(--nk-text-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 2px solid var(--nk-color-border);
  }

  .nk-table td {
    padding: var(--nk-space-3) var(--nk-space-4);
    border-bottom: 1px solid var(--nk-color-border);
    vertical-align: middle;
  }

  .nk-table tbody tr:hover {
    background-color: var(--nk-color-primary-bg);
  }

  .nk-table--striped tbody tr:nth-child(even) {
    background-color: var(--nk-color-bg);
  }

  .nk-table--bordered {
    border: 1px solid var(--nk-color-border);
  }

  .nk-table--bordered th,
  .nk-table--bordered td {
    border: 1px solid var(--nk-color-border);
  }

  .nk-table--compact th,
  .nk-table--compact td {
    padding: var(--nk-space-2) var(--nk-space-3);
  }

  .nk-table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* ---- Alerts ---- */
  .nk-alert {
    padding: var(--nk-space-3) var(--nk-space-4);
    border-radius: var(--nk-radius-md);
    font-size: var(--nk-text-sm);
    line-height: var(--nk-leading-normal);
    border: 1px solid transparent;
    display: flex;
    align-items: flex-start;
    gap: var(--nk-space-3);
  }

  .nk-alert__icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 1px;
  }

  .nk-alert__content {
    flex: 1;
  }

  .nk-alert__title {
    font-weight: var(--nk-weight-semibold);
    margin-bottom: var(--nk-space-1);
  }

  .nk-alert__close {
    flex-shrink: 0;
    padding: var(--nk-space-1);
    border-radius: var(--nk-radius-sm);
    opacity: 0.6;
    transition: opacity var(--nk-transition-fast);
  }

  .nk-alert__close:hover {
    opacity: 1;
  }

  .nk-alert--success {
    background-color: var(--nk-color-success-bg);
    border-color: var(--nk-color-success-light);
    color: var(--nk-color-success-dark);
  }

  .nk-alert--danger {
    background-color: var(--nk-color-danger-bg);
    border-color: var(--nk-color-danger-light);
    color: var(--nk-color-danger-dark);
  }

  .nk-alert--warning {
    background-color: var(--nk-color-warning-bg);
    border-color: var(--nk-color-warning-light);
    color: var(--nk-color-warning-dark);
  }

  .nk-alert--info {
    background-color: var(--nk-color-info-bg);
    border-color: var(--nk-color-info-light);
    color: var(--nk-color-info-dark);
  }

  /* ---- Modals ---- */
  .nk-modal-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.45);
    z-index: var(--nk-z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--nk-space-4);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--nk-transition-base), visibility var(--nk-transition-base);
  }

  .nk-modal-backdrop--open {
    opacity: 1;
    visibility: visible;
  }

  .nk-modal {
    background-color: var(--nk-color-bg-white);
    border-radius: var(--nk-radius-xl);
    box-shadow: var(--nk-shadow-xl);
    width: 100%;
    max-width: 520px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    z-index: var(--nk-z-modal);
    transform: translateY(10px);
    transition: transform var(--nk-transition-base);
  }

  .nk-modal-backdrop--open .nk-modal {
    transform: translateY(0);
  }

  .nk-modal--sm { max-width: 380px; }
  .nk-modal--lg { max-width: 720px; }
  .nk-modal--xl { max-width: 960px; }

  .nk-modal__header {
    padding: var(--nk-space-4) var(--nk-space-5);
    border-bottom: 1px solid var(--nk-color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
  }

  .nk-modal__title {
    font-size: var(--nk-text-lg);
    font-weight: var(--nk-weight-semibold);
  }

  .nk-modal__close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--nk-radius-md);
    color: var(--nk-color-text-muted);
    transition: background-color var(--nk-transition-fast), color var(--nk-transition-fast);
  }

  .nk-modal__close:hover {
    background-color: var(--nk-color-bg-muted);
    color: var(--nk-color-text);
  }

  .nk-modal__body {
    padding: var(--nk-space-5);
    overflow-y: auto;
    flex: 1;
  }

  .nk-modal__footer {
    padding: var(--nk-space-4) var(--nk-space-5);
    border-top: 1px solid var(--nk-color-border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--nk-space-3);
    flex-shrink: 0;
  }

  /* ---- Stats ---- */
  .nk-stat {
    display: flex;
    flex-direction: column;
    padding: var(--nk-space-4) var(--nk-space-5);
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border);
    border-radius: var(--nk-radius-lg);
  }

  .nk-stat__label {
    font-size: var(--nk-text-xs);
    color: var(--nk-color-text-muted);
    font-weight: var(--nk-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--nk-space-1);
  }

  .nk-stat__value {
    font-size: var(--nk-text-2xl);
    font-weight: var(--nk-weight-bold);
    color: var(--nk-color-text);
    line-height: var(--nk-leading-tight);
  }

  .nk-stat__change {
    font-size: var(--nk-text-xs);
    margin-top: var(--nk-space-1);
  }

  .nk-stat__change--up {
    color: var(--nk-color-success);
  }

  .nk-stat__change--down {
    color: var(--nk-color-danger);
  }

  .nk-stat--primary {
    border-left: 3px solid var(--nk-color-primary);
  }

  .nk-stat--success {
    border-left: 3px solid var(--nk-color-success);
  }

  .nk-stat--warning {
    border-left: 3px solid var(--nk-color-warning);
  }

  .nk-stat--danger {
    border-left: 3px solid var(--nk-color-danger);
  }

  /* ---- Lists ---- */
  .nk-list {
    border: 1px solid var(--nk-color-border);
    border-radius: var(--nk-radius-lg);
    overflow: hidden;
    background-color: var(--nk-color-bg-white);
  }

  .nk-list__item {
    padding: var(--nk-space-3) var(--nk-space-4);
    border-bottom: 1px solid var(--nk-color-border);
    display: flex;
    align-items: center;
    gap: var(--nk-space-3);
    font-size: var(--nk-text-sm);
    transition: background-color var(--nk-transition-fast);
  }

  .nk-list__item:last-child {
    border-bottom: none;
  }

  .nk-list__item:hover {
    background-color: var(--nk-color-bg);
  }

  .nk-list__item--active {
    background-color: var(--nk-color-primary-bg);
    color: var(--nk-color-primary);
  }

  .nk-list__icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--nk-color-text-muted);
  }

  .nk-list__content {
    flex: 1;
    min-width: 0;
  }

  .nk-list__action {
    flex-shrink: 0;
    color: var(--nk-color-text-muted);
  }

  .nk-list--flush {
    border: none;
    border-radius: 0;
  }

  /* ---- Dropdowns ---- */
  .nk-dropdown {
    position: relative;
    display: inline-block;
  }

  .nk-dropdown__menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border);
    border-radius: var(--nk-radius-lg);
    box-shadow: var(--nk-shadow-lg);
    z-index: var(--nk-z-dropdown);
    padding: var(--nk-space-1) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity var(--nk-transition-fast),
                visibility var(--nk-transition-fast),
                transform var(--nk-transition-fast);
  }

  .nk-dropdown--open .nk-dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nk-dropdown__menu--right {
    left: auto;
    right: 0;
  }

  .nk-dropdown__item {
    display: flex;
    align-items: center;
    gap: var(--nk-space-2);
    padding: var(--nk-space-2) var(--nk-space-4);
    font-size: var(--nk-text-sm);
    color: var(--nk-color-text);
    white-space: nowrap;
    transition: background-color var(--nk-transition-fast);
    cursor: pointer;
  }

  .nk-dropdown__item:hover {
    background-color: var(--nk-color-bg);
  }

  .nk-dropdown__item--danger {
    color: var(--nk-color-danger);
  }

  .nk-dropdown__divider {
    height: 1px;
    margin: var(--nk-space-1) 0;
    background-color: var(--nk-color-border);
  }

  .nk-dropdown__header {
    padding: var(--nk-space-2) var(--nk-space-4);
    font-size: var(--nk-text-xs);
    font-weight: var(--nk-weight-semibold);
    color: var(--nk-color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
  }

  /* ---- Tabs ---- */
  .nk-tabs {
    display: flex;
    border-bottom: 2px solid var(--nk-color-border);
    gap: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nk-tabs__item {
    padding: var(--nk-space-3) var(--nk-space-4);
    font-size: var(--nk-text-sm);
    font-weight: var(--nk-weight-medium);
    color: var(--nk-color-text-muted);
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color var(--nk-transition-fast), border-color var(--nk-transition-fast);
    cursor: pointer;
  }

  .nk-tabs__item:hover {
    color: var(--nk-color-text);
  }

  .nk-tabs__item--active {
    color: var(--nk-color-primary);
    border-bottom-color: var(--nk-color-primary);
  }

  .nk-tabs__panel {
    display: none;
    padding: var(--nk-space-4) 0;
  }

  .nk-tabs__panel--active {
    display: block;
  }

  .nk-tabs--pills {
    border-bottom: none;
    gap: var(--nk-space-1);
    background-color: var(--nk-color-bg-muted);
    border-radius: var(--nk-radius-md);
    padding: var(--nk-space-1);
  }

  .nk-tabs--pills .nk-tabs__item {
    border-bottom: none;
    margin-bottom: 0;
    border-radius: var(--nk-radius-sm);
    padding: var(--nk-space-2) var(--nk-space-3);
  }

  .nk-tabs--pills .nk-tabs__item--active {
    background-color: var(--nk-color-bg-white);
    box-shadow: var(--nk-shadow-xs);
    color: var(--nk-color-text);
  }

  /* ---- Pagination ---- */
  .nk-pagination {
    display: flex;
    align-items: center;
    gap: var(--nk-space-1);
  }

  .nk-pagination__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 var(--nk-space-2);
    font-size: var(--nk-text-sm);
    border-radius: var(--nk-radius-md);
    color: var(--nk-color-text-secondary);
    transition: background-color var(--nk-transition-fast), color var(--nk-transition-fast);
    cursor: pointer;
  }

  .nk-pagination__item:hover {
    background-color: var(--nk-color-bg-muted);
  }

  .nk-pagination__item--active {
    background-color: var(--nk-color-primary);
    color: var(--nk-color-text-inverse);
  }

  .nk-pagination__item--disabled {
    opacity: 0.4;
    pointer-events: none;
  }

  .nk-pagination__ellipsis {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    color: var(--nk-color-text-muted);
  }

  /* ---- Page header ---- */
  .nk-page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--nk-space-4);
    margin-bottom: var(--nk-space-6);
    flex-wrap: wrap;
  }

  .nk-page-header__title {
    font-size: var(--nk-text-xl);
    font-weight: var(--nk-weight-bold);
    color: var(--nk-color-text);
    line-height: var(--nk-leading-tight);
  }

  .nk-page-header__subtitle {
    font-size: var(--nk-text-sm);
    color: var(--nk-color-text-muted);
    margin-top: var(--nk-space-1);
  }

  .nk-page-header__breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--nk-space-2);
    font-size: var(--nk-text-xs);
    color: var(--nk-color-text-muted);
    margin-bottom: var(--nk-space-2);
  }

  .nk-page-header__breadcrumb a:hover {
    color: var(--nk-color-primary);
  }

  .nk-page-header__actions {
    display: flex;
    align-items: center;
    gap: var(--nk-space-2);
  }

  @media (max-width: 767.98px) {
    .nk-page-header {
      flex-direction: column;
      align-items: flex-start;
    }

    .nk-page-header__actions {
      width: 100%;
    }
  }

  /* ---- Empty state ---- */
  .nk-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--nk-space-12) var(--nk-space-6);
    color: var(--nk-color-text-muted);
  }

  .nk-empty-state__icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--nk-space-4);
    opacity: 0.4;
  }

  .nk-empty-state__title {
    font-size: var(--nk-text-lg);
    font-weight: var(--nk-weight-semibold);
    color: var(--nk-color-text-secondary);
    margin-bottom: var(--nk-space-2);
  }

  .nk-empty-state__description {
    font-size: var(--nk-text-sm);
    max-width: 400px;
    margin-bottom: var(--nk-space-5);
  }

  /* ---- Toasts ---- */
  .nk-toast-container {
    position: fixed;
    top: calc(var(--nk-navbar-height) + var(--nk-space-4));
    right: var(--nk-space-4);
    z-index: var(--nk-z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--nk-space-2);
    max-width: 380px;
    width: 100%;
    pointer-events: none;
  }

  .nk-toast {
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border);
    border-radius: var(--nk-radius-lg);
    box-shadow: var(--nk-shadow-lg);
    padding: var(--nk-space-3) var(--nk-space-4);
    display: flex;
    align-items: flex-start;
    gap: var(--nk-space-3);
    pointer-events: auto;
    animation: nk-toast-in var(--nk-transition-base) ease forwards;
  }

  @keyframes nk-toast-in {
    from {
      opacity: 0;
      transform: translateX(20px);
    }
    to {
      opacity: 1;
      transform: translateX(0);
    }
  }

  .nk-toast--success {
    border-left: 3px solid var(--nk-color-success);
  }

  .nk-toast--danger {
    border-left: 3px solid var(--nk-color-danger);
  }

  .nk-toast--warning {
    border-left: 3px solid var(--nk-color-warning);
  }

  .nk-toast--info {
    border-left: 3px solid var(--nk-color-info);
  }

  .nk-toast__icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 1px;
  }

  .nk-toast__content {
    flex: 1;
    min-width: 0;
  }

  .nk-toast__title {
    font-size: var(--nk-text-sm);
    font-weight: var(--nk-weight-semibold);
    margin-bottom: 2px;
  }

  .nk-toast__message {
    font-size: var(--nk-text-xs);
    color: var(--nk-color-text-secondary);
  }

  .nk-toast__close {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--nk-radius-sm);
    color: var(--nk-color-text-muted);
    transition: color var(--nk-transition-fast);
  }

  .nk-toast__close:hover {
    color: var(--nk-color-text);
  }

  @media (max-width: 767.98px) {
    .nk-toast-container {
      left: var(--nk-space-4);
      right: var(--nk-space-4);
      max-width: none;
    }
  }

  /* ---- Backward compat aliases ---- */
  .card-nokkeru {
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border);
    border-radius: var(--nk-radius-lg);
    box-shadow: var(--nk-shadow-xs);
    overflow: hidden;
    margin-bottom: 20px;
  }
  .card-nokkeru-body--flush { padding: 0; }
  .btn-nk-block { display: flex; width: 100%; justify-content: center; }
  .font-semibold { font-weight: 600; }
  .card-nokkeru-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px; border-bottom: 1px solid var(--nk-border);
    font-size: 0.9375rem; font-weight: 600;
  }
  .card-nokkeru-body { padding: 16px; }
  .card-nokkeru-footer {
    padding: 10px 16px; border-top: 1px solid var(--nk-border);
    font-size: 0.8125rem;
  }
  .card-nokkeru-title {
    font-size: 0.9375rem; font-weight: 600;
    display: flex; align-items: center; gap: 6px;
  }

  /* Bootstrap modal compat */
  .modal { display: none; position: fixed; inset: 0; z-index: 1060; overflow-x: hidden; overflow-y: auto; }
  .modal.fade .modal-dialog { transform: translateY(-20px); transition: transform 0.2s ease; }
  .modal.show .modal-dialog { transform: translateY(0); }
  .modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 1050; }
  .modal-dialog {
      position: relative; width: auto; max-width: 500px;
      margin: 1.75rem auto;
      pointer-events: none;
  }
  .modal-dialog-centered {
      display: flex; align-items: center;
      min-height: calc(100% - 3.5rem);
  }
  .modal-sm { max-width: 300px; }
  .modal-lg { max-width: 800px; }
  .modal-content {
      position: relative;
      display: flex; flex-direction: column;
      width: 100%;
      pointer-events: auto;
      background: var(--nk-surface);
      border-radius: var(--nk-radius-xl);
      box-shadow: var(--nk-shadow-xl);
      overflow: hidden;
  }
  .modal-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: 20px 24px 16px; border-bottom: 1px solid var(--nk-border);
  }
  .modal-title { font-size: 1.125rem; font-weight: 600; display: flex; align-items: center; gap: 8px; }
  .modal-body { padding: 20px 24px; }
  .modal-footer {
      display: flex; justify-content: flex-end; gap: 8px;
      padding: 16px 24px; border-top: 1px solid var(--nk-border);
  }
  .btn-close {
      background: none; border: none; font-size: 1.25rem;
      cursor: pointer; color: var(--nk-text-secondary);
      padding: 4px; line-height: 1; opacity: 0.6;
  }
  .btn-close:hover { opacity: 1; }
  .btn-close::after { content: "✕"; }

  /* Bottom sheet (mobile menu) */
  .nk-bottom-sheet { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: var(--nk-surface); border-radius: 16px 16px 0 0; box-shadow: var(--nk-shadow-xl); z-index: 1050; max-height: 70vh; overflow-y: auto; }
  .nk-bottom-sheet.show { display: block; }
  .nk-bottom-sheet-header { display: flex; align-items: center; justify-content: space-between; padding: 16px; border-bottom: 1px solid var(--nk-border); font-weight: 600; }
  .nk-bottom-sheet-backdrop { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.3); z-index: 1040; }
  .nk-bottom-sheet-backdrop.show { display: block; }

  .btn-nk-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--nk-space-2);
    padding: var(--nk-space-2) var(--nk-space-4);
    font-size: var(--nk-text-sm);
    font-weight: var(--nk-weight-medium);
    line-height: 1.5;
    border-radius: var(--nk-radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    background-color: var(--nk-color-primary);
    color: #fff;
    transition: background-color var(--nk-transition-fast);
    white-space: nowrap;
    text-decoration: none;
  }

  .btn-nk-primary:hover {
    background-color: var(--nk-color-primary-light);
  }

  /* Button base shared styles */
  .btn-nk-primary, .btn-nk-secondary, .btn-nk-danger, .btn-nk-warning {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 6px; padding: 8px 16px; font-size: 0.875rem; font-weight: 500;
    line-height: 1.5; border-radius: 8px; border: 1px solid transparent;
    cursor: pointer; white-space: nowrap; text-decoration: none;
    transition: background-color 0.15s ease, box-shadow 0.15s ease;
    min-height: 40px;
    position: relative; overflow: hidden;
  }

  /* Ripple effect (added by layout.js) */
  .nk-ripple {
    position: absolute; border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: scale(0); animation: nk-ripple-anim 0.6s linear;
    pointer-events: none;
  }
  @keyframes nk-ripple-anim {
    to { transform: scale(4); opacity: 0; }
  }
  .btn-nk-secondary {
    background: var(--nk-surface); color: var(--nk-text);
    border-color: var(--nk-border);
  }
  .btn-nk-secondary:hover { background: var(--nk-bg); }
  .btn-nk-danger {
    background: var(--nk-danger); color: #fff; border-color: var(--nk-danger);
  }
  .btn-nk-danger:hover { background: var(--nk-color-danger-dark); }
  .btn-nk-warning {
    background: var(--nk-warning); color: #fff; border-color: var(--nk-warning);
  }
  .btn-nk-warning:hover { background: var(--nk-color-warning-dark); }

  /* Button sizes */
  .btn-nk-sm { padding: 4px 10px; font-size: 0.75rem; min-height: 32px; border-radius: 6px; }
  .btn-nk-lg { padding: 12px 24px; font-size: 1rem; min-height: 48px; }

  /* Badge size */
  .ui-badge-sm { font-size: 0.6875rem; padding: 2px 8px; }

  /* Stat card compat */
  .ui-stat-content { display: flex; flex-direction: column; }
  .ui-stat-label { font-size: 0.75rem; color: var(--nk-text-secondary); }
  .ui-stat-value { font-size: 1.5rem; font-weight: 700; }
  .ui-stat-unit { font-size: 0.875rem; font-weight: 400; }
  .ui-stat-icon {
    width: 40px; height: 40px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
  }
  .ui-stat-icon-success { background: rgba(16,185,129,0.15); color: #059669; }
  .ui-stat-icon-warning { background: rgba(245,158,11,0.15); color: #d97706; }
  .ui-stat-icon-danger { background: rgba(239,68,68,0.15); color: #dc2626; }
  .ui-stat-icon-info { background: rgba(37,99,235,0.15); color: #2563eb; }

  /* Page header compat */
  .page-header-nokkeru {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 20px; flex-wrap: wrap; gap: 12px;
  }
  .page-header-content { display: flex; flex-direction: column; gap: 4px; }
  .page-title {
    font-size: 1.25rem; font-weight: 700;
    display: flex; align-items: center; gap: 8px;
  }
  .page-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; align-self: flex-start; }

  /* Alert compat */
  .alert-nokkeru {
    display: flex; align-items: flex-start; gap: 8px;
    padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 0.875rem;
  }
  .alert-nokkeru-success { background: #d1fae5; color: #065f46; }
  .alert-nokkeru-danger { background: #fee2e2; color: #991b1b; }
  .alert-nokkeru-warning { background: #fef3c7; color: #92400e; }
  .alert-nokkeru-info { background: #dbeafe; color: #1e40af; }

  /* Nokkeru form container */
  .nk-form-container { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

  /* Text helpers */
  .text-danger { color: var(--nk-danger); }
  .text-primary { color: var(--nk-primary); }
  .text-muted { color: var(--nk-text-muted); }
  .text-secondary { color: var(--nk-text-secondary); }
  .text-success { color: var(--nk-success); }
  .text-warning { color: var(--nk-warning); }
  .text-center { text-align: center; }
  .text-right { text-align: right; }
  .fw-bold, .font-bold { font-weight: 700; }
  .nk-required, .required { color: var(--nk-danger); font-weight: 600; }

  /* Margin/padding helpers */
  .mb-0 { margin-bottom: 0; }
  .mb-2 { margin-bottom: 8px; }
  .mb-3 { margin-bottom: 12px; }
  .mb-4 { margin-bottom: 16px; }
  .mt-2 { margin-top: 8px; }
  .mt-3 { margin-top: 12px; }
  .me-1 { margin-right: 4px; }
  .me-2 { margin-right: 8px; }
  .ms-2 { margin-left: 8px; }
  .py-3 { padding-top: 12px; padding-bottom: 12px; }
  .px-3 { padding-left: 12px; padding-right: 12px; }
  .px-md-4 { }
  @media (min-width: 768px) { .px-md-4 { padding-left: 24px; padding-right: 24px; } }
  .p-2 { padding: 8px; }
  .p-3 { padding: 12px; }
  .p-4 { padding: 16px; }

  /* Flex helpers */
  .d-flex { display: flex; }
  .d-inline-flex { display: inline-flex; }
  .flex-wrap { flex-wrap: wrap; }
  .align-items-center { align-items: center; }
  .justify-content-between { justify-content: space-between; }
  .justify-content-center { justify-content: center; }
  .gap-2 { gap: 8px; }
  .gap-3 { gap: 12px; }

  /* Border helpers */
  .border { border: 1px solid var(--nk-border); }
  .border-bottom { border-bottom: 1px solid var(--nk-border); }
  .rounded { border-radius: var(--nk-radius-md); }

  .form-control-nokkeru {
    display: block;
    width: 100%;
    padding: var(--nk-space-2) var(--nk-space-3);
    font-size: var(--nk-text-sm);
    line-height: 1.5;
    color: var(--nk-color-text);
    background-color: var(--nk-color-bg-white);
    border: 1px solid var(--nk-color-border-dark);
    border-radius: var(--nk-radius-md);
    transition: border-color var(--nk-transition-fast), box-shadow var(--nk-transition-fast);
    appearance: none;
  }

  .form-control-nokkeru:focus {
    border-color: var(--nk-color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.12);
    outline: none;
  }

  .badge-nokkeru-primary {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--nk-space-2);
    font-size: var(--nk-text-xs);
    font-weight: var(--nk-weight-medium);
    line-height: 1.4;
    border-radius: var(--nk-radius-full);
    background-color: var(--nk-color-primary-bg);
    color: var(--nk-color-primary);
  }

  .badge-nokkeru-success {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--nk-space-2);
    font-size: var(--nk-text-xs);
    font-weight: var(--nk-weight-medium);
    line-height: 1.4;
    border-radius: var(--nk-radius-full);
    background-color: var(--nk-color-success-bg);
    color: var(--nk-color-success);
  }

  .badge-nokkeru-warning {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--nk-space-2);
    font-size: var(--nk-text-xs);
    font-weight: var(--nk-weight-medium);
    line-height: 1.4;
    border-radius: var(--nk-radius-full);
    background-color: var(--nk-color-warning-bg);
    color: var(--nk-color-warning);
  }

  .badge-nokkeru-danger {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--nk-space-2);
    font-size: var(--nk-text-xs);
    font-weight: var(--nk-weight-medium);
    line-height: 1.4;
    border-radius: var(--nk-radius-full);
    background-color: var(--nk-color-danger-bg);
    color: var(--nk-color-danger);
  }

  .badge-nokkeru-info {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--nk-space-2);
    font-size: var(--nk-text-xs);
    font-weight: var(--nk-weight-medium);
    line-height: 1.4;
    border-radius: var(--nk-radius-full);
    background-color: var(--nk-color-info-bg);
    color: var(--nk-color-info);
  }

  .alert-nokkeru-success {
    padding: var(--nk-space-3) var(--nk-space-4);
    border-radius: var(--nk-radius-md);
    font-size: var(--nk-text-sm);
    background-color: var(--nk-color-success-bg);
    border: 1px solid var(--nk-color-success-light);
    color: var(--nk-color-success-dark);
  }

  .alert-nokkeru-danger {
    padding: var(--nk-space-3) var(--nk-space-4);
    border-radius: var(--nk-radius-md);
    font-size: var(--nk-text-sm);
    background-color: var(--nk-color-danger-bg);
    border: 1px solid var(--nk-color-danger-light);
    color: var(--nk-color-danger-dark);
  }

  .alert-nokkeru-warning {
    padding: var(--nk-space-3) var(--nk-space-4);
    border-radius: var(--nk-radius-md);
    font-size: var(--nk-text-sm);
    background-color: var(--nk-color-warning-bg);
    border: 1px solid var(--nk-color-warning-light);
    color: var(--nk-color-warning-dark);
  }

  .alert-nokkeru-info {
    padding: var(--nk-space-3) var(--nk-space-4);
    border-radius: var(--nk-radius-md);
    font-size: var(--nk-text-sm);
    background-color: var(--nk-color-info-bg);
    border: 1px solid var(--nk-color-info-light);
    color: var(--nk-color-info-dark);
  }

  /* ---- Collapse (Bootstrap compat) ---- */
  .collapse {
    display: none;
  }

  .collapse.show {
    display: block;
  }

  /* ===== Dashboard Components ===== */

  /* Stats row */
  .nk-db-stats-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0;
      margin-bottom: 20px;
      background: var(--nk-surface);
      border: 1px solid var(--nk-border);
      border-radius: var(--nk-radius-lg);
      overflow: hidden;
  }
  .nk-db-stat-item {
      text-align: center;
      padding: 20px 16px;
      border-right: 1px solid var(--nk-border);
  }
  .nk-db-stat-item:last-child { border-right: none; }
  .nk-db-stat-value { display: block; font-size: 2rem; font-weight: 700; line-height: 1.2; }
  .nk-db-stat-label { display: block; font-size: 0.75rem; color: var(--nk-text-secondary); margin-top: 4px; }
  .nk-db-stat-success { color: var(--nk-success); }
  .nk-db-stat-warning { color: var(--nk-warning); }
  .nk-db-stat-danger { color: var(--nk-danger); }
  .nk-db-stat-info { color: var(--nk-info); }

  /* Action required grid */
  .nk-db-action-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
      gap: 12px;
  }
  .nk-db-action-card {
      display: flex; align-items: center; gap: 12px;
      padding: 14px 16px; border-radius: 10px;
      border: 1px solid var(--nk-border);
      background: var(--nk-surface);
      text-decoration: none; color: inherit;
      transition: box-shadow 0.15s ease, transform 0.15s ease;
  }
  .nk-db-action-card:hover { box-shadow: var(--nk-shadow-md); transform: translateY(-1px); color: inherit; }
  .nk-db-action-critical { background: #fef2f2; }
  .nk-db-action-critical .nk-db-action-icon, .nk-db-action-critical .nk-db-action-count { color: var(--nk-danger); }
  .nk-db-action-warning { background: #fffbeb; }
  .nk-db-action-warning .nk-db-action-icon, .nk-db-action-warning .nk-db-action-count { color: var(--nk-warning); }
  .nk-db-action-info { display: flex; flex-direction: column; }
  .nk-db-action-count { font-size: 1.5rem; font-weight: 700; }
  .nk-db-action-label { font-size: 0.8125rem; color: var(--nk-text-secondary); }

  /* Header */
  .nk-db-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 20px; }
  .nk-db-header-left { display: flex; flex-direction: column; }
  .nk-db-title { font-size: 1.5rem; font-weight: 700; }
  .nk-db-date { font-size: 0.875rem; color: var(--nk-text-secondary); }

  /* Today schedule table */
  .nk-db-today-table { width: 100%; }
  .nk-db-today-header {
      display: grid; grid-template-columns: 60px 1fr 1fr 120px;
      padding: 8px 16px; font-size: 0.75rem; font-weight: 600;
      color: var(--nk-text-secondary); border-bottom: 1px solid var(--nk-border);
  }
  .nk-db-today-row {
      display: grid; grid-template-columns: 60px 1fr 1fr 120px;
      padding: 10px 16px; border-bottom: 1px solid var(--nk-border);
      font-size: 0.8125rem; align-items: center;
  }
  .nk-db-today-row:last-child { border-bottom: none; }
  .nk-db-today-col-time { color: var(--nk-primary); font-weight: 600; }
  .nk-db-today-col-site { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .nk-db-today-col-staff { font-size: 0.8125rem; }
  .nk-db-today-col-vehicle { text-align: right; color: var(--nk-text-secondary); }
  .nk-db-staff-tag, .nk-db-vehicle-tag {
      display: inline-block; padding: 1px 6px; margin: 1px 2px;
      font-size: 0.6875rem; background: var(--nk-bg); border-radius: 4px;
  }
  .nk-db-today-empty { color: var(--nk-text-muted); }

  /* Grid layout */
  .nk-db-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
  .nk-db-column { min-width: 0; }

  /* Link */
  .nk-db-link { display: flex; align-items: center; gap: 4px; font-size: 0.8125rem; color: var(--nk-primary); }
  .nk-db-link:hover { text-decoration: underline; }

  /* Attendance list */
  .nk-db-attendance-list { list-style: none; padding: 0; margin: 0; }
  .nk-db-attendance-item { display: flex; align-items: center; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--nk-border); }
  .nk-db-attendance-item:last-child { border-bottom: none; }
  .nk-db-attendance-name { font-size: 0.875rem; font-weight: 500; }
  .nk-db-attendance-time { font-size: 0.8125rem; color: var(--nk-text-secondary); margin-right: 8px; }
  .nk-db-attendance-status { font-size: 0.6875rem; padding: 2px 8px; border-radius: 9999px; font-weight: 600; }
  .nk-db-attendance-working { background: #dbeafe; color: #1d4ed8; }
  .nk-db-attendance-done { background: #d1fae5; color: #059669; }
  .nk-db-attendance-late { background: #fee2e2; color: #dc2626; }

  /* Employee self attendance */
  .nk-db-attendance-self { text-align: center; padding: 20px 16px; }
  .nk-db-attendance-self-status { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; }
  .nk-db-attendance-self-status.working { color: #1d4ed8; }
  .nk-db-attendance-self-status.done { color: #059669; }
  .nk-db-attendance-self-status.not-started { color: var(--nk-text-muted); }
  .nk-db-attendance-self-times { display: flex; justify-content: center; gap: 32px; margin-bottom: 16px; }
  .nk-db-attendance-self-time .label { display: block; font-size: 0.75rem; color: var(--nk-text-secondary); }
  .nk-db-attendance-self-time .time { font-size: 1.125rem; font-weight: 600; }

  /* ToDo list */
  .nk-db-todo-list { list-style: none; padding: 0; margin: 0; }
  .nk-db-todo-item { display: flex; gap: 8px; padding: 10px 0; border-bottom: 1px solid var(--nk-border); align-items: flex-start; }
  .nk-db-todo-item:last-child { border-bottom: none; }
  .nk-db-todo-overdue { background: #fef2f2; margin: 0 -16px; padding: 10px 16px; }
  .nk-db-todo-complete-btn { flex-shrink: 0; background: none; border: 1px solid var(--nk-border); border-radius: 4px; padding: 4px 8px; font-size: 0.6875rem; cursor: pointer; color: var(--nk-text-secondary); }
  .nk-db-todo-complete-btn:hover { background: var(--nk-success); color: #fff; border-color: var(--nk-success); }
  .nk-db-todo-content { flex: 1; min-width: 0; }
  .nk-db-todo-title { font-size: 0.875rem; font-weight: 500; }
  .nk-db-todo-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; font-size: 0.6875rem; color: var(--nk-text-secondary); }
  .nk-db-todo-due { display: flex; align-items: center; gap: 2px; }
  .nk-db-todo-due-overdue { color: var(--nk-danger); font-weight: 600; }
  .nk-db-todo-priority { padding: 1px 6px; border-radius: 4px; font-weight: 600; }
  .nk-db-todo-priority-high { background: #fee2e2; color: #dc2626; }
  .nk-db-todo-priority-medium { background: #fef3c7; color: #d97706; }
  .nk-db-todo-form { display: inline; }
  .nk-db-todo-from-to { display: flex; align-items: center; gap: 4px; }

  /* Empty state */
  .nk-db-empty-state { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 32px 16px; color: var(--nk-text-muted); font-size: 0.875rem; }

  /* Summary grid (employee applications) */
  .nk-db-summary-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; text-align: center; }
  .nk-db-summary-item { padding: 8px 4px; }
  .nk-db-summary-value { display: block; font-size: 1.5rem; font-weight: 700; }
  .nk-db-summary-label { display: block; font-size: 0.6875rem; color: var(--nk-text-secondary); }

  /* Modal variant */
  .modal-nokkeru .modal-content { border-radius: var(--nk-radius-lg); }

  /* ToDo modal form */
  .nk-todo-modal { border-radius: var(--nk-radius-lg); }
  .nk-todo-modal-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: 16px; border-bottom: 1px solid var(--nk-border);
  }
  .nk-todo-modal-title { font-size: 1rem; font-weight: 600; display: flex; align-items: center; gap: 6px; }
  .nk-todo-modal-close {
      background: none; border: none; font-size: 1.25rem; cursor: pointer;
      color: var(--nk-text-secondary); padding: 4px;
  }
  .nk-todo-modal-close:hover { color: var(--nk-text); }
  .nk-todo-modal-body { padding: 16px; }
  .nk-todo-modal-footer {
      display: flex; justify-content: flex-end; gap: 8px;
      padding: 12px 16px; border-top: 1px solid var(--nk-border);
  }
  .nk-todo-form-group { margin-bottom: 12px; }
  .nk-todo-form-label { display: block; font-size: 0.8125rem; font-weight: 500; margin-bottom: 4px; }
  .nk-todo-form-input {
      display: block; width: 100%; padding: 8px 12px;
      font-size: 0.875rem; border: 1px solid var(--nk-border);
      border-radius: var(--nk-radius-md); background: var(--nk-surface);
      color: var(--nk-text); transition: border-color 0.15s ease;
  }
  .nk-todo-form-input:focus { outline: none; border-color: var(--nk-primary); box-shadow: 0 0 0 3px rgba(30,58,95,0.1); }
  .nk-todo-form-textarea { resize: vertical; min-height: 60px; }
  .nk-todo-form-select {
      display: block; width: 100%; padding: 8px 12px;
      font-size: 0.875rem; border: 1px solid var(--nk-border);
      border-radius: var(--nk-radius-md); background: var(--nk-surface);
      color: var(--nk-text); appearance: none;
      background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
      background-repeat: no-repeat; background-position: right 10px center; background-size: 14px;
  }
  .nk-todo-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .nk-todo-segment-control {
      display: flex; gap: 0; border: 1px solid var(--nk-border); border-radius: var(--nk-radius-md); overflow: hidden;
  }
  .nk-todo-segment-control label {
      flex: 1; text-align: center; padding: 6px 12px; font-size: 0.8125rem;
      cursor: pointer; transition: background 0.15s ease; border-right: 1px solid var(--nk-border);
  }
  .nk-todo-segment-control label:last-child { border-right: none; }
  .nk-todo-segment-control input:checked + label,
  .nk-todo-segment-control input[type="radio"]:checked ~ label { background: var(--nk-primary); color: #fff; }
  .nk-todo-assignee-select { margin-top: 8px; }
  .nk-todo-checkbox-list { display: flex; flex-direction: column; gap: 4px; max-height: 200px; overflow-y: auto; }
  .nk-todo-checkbox-item { display: flex; align-items: center; gap: 8px; padding: 4px 0; cursor: pointer; font-size: 0.8125rem; }
  .nk-todo-checkbox-label { user-select: none; }

  /* Sub warning */
  .nk-db-stat-sub-warning { color: var(--nk-warning); font-weight: 600; }

  /* ===== Message Page Components ===== */

  /* Conversation list */
  .nk-conversation-list { list-style: none; padding: 0; margin: 0; }
  .nk-conversation-item {
      display: flex; align-items: center; gap: 12px;
      padding: 14px 16px; border-bottom: 1px solid var(--nk-border);
      transition: background 0.15s ease; text-decoration: none; color: inherit;
  }
  .nk-conversation-item:hover { background: var(--nk-bg); }
  .nk-conversation-item.unread { background: #f0f7ff; }
  .nk-conversation-item.unread .nk-conversation-name { font-weight: 700; }

  /* Avatar */
  .nk-avatar {
      width: 40px; height: 40px; border-radius: 50%;
      background: var(--nk-primary); color: #fff;
      display: flex; align-items: center; justify-content: center;
      font-size: 0.875rem; font-weight: 600; flex-shrink: 0;
  }
  .nk-conversation-content { flex: 1; min-width: 0; }
  .nk-conversation-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 2px; }
  .nk-conversation-name { font-size: 0.875rem; font-weight: 600; }
  .nk-conversation-time { font-size: 0.6875rem; color: var(--nk-text-muted); flex-shrink: 0; }
  .nk-conversation-preview { font-size: 0.8125rem; color: var(--nk-text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; margin: 0; }

  /* Unread badge */
  .nk-unread-badge {
      display: flex; align-items: center; justify-content: center;
      min-width: 20px; height: 20px; padding: 0 6px;
      background: var(--nk-danger); color: #fff;
      font-size: 0.6875rem; font-weight: 700; border-radius: 9999px;
  }

  /* Empty state variant */
  .empty-state-nokkeru { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 48px 16px; color: var(--nk-text-muted); text-align: center; }
  .empty-state-icon { color: var(--nk-text-muted); margin-bottom: 8px; }
  .empty-state-nokkeru h5 { font-size: 1rem; font-weight: 600; color: var(--nk-text); margin-bottom: 4px; }
  .empty-state-nokkeru p { font-size: 0.8125rem; color: var(--nk-text-secondary); margin-bottom: 16px; }

  /* File upload area */
  .nk-file-upload-area {
      display: flex; flex-direction: column; align-items: center; justify-content: center;
      padding: 24px; border: 2px dashed var(--nk-border); border-radius: var(--nk-radius-lg);
      cursor: pointer; transition: border-color 0.15s ease, background 0.15s ease;
      text-align: center;
  }
  .nk-file-upload-area:hover { border-color: var(--nk-primary); background: var(--nk-bg); }
  .nk-file-upload-icon { color: var(--nk-text-muted); margin-bottom: 8px; }
  .nk-file-upload-text { font-size: 0.875rem; font-weight: 500; color: var(--nk-text); }
  .nk-file-upload-hint { font-size: 0.75rem; color: var(--nk-text-muted); margin-top: 4px; }

  /* File list item */
  .nk-file-item-icon { flex-shrink: 0; color: var(--nk-text-secondary); }
  .nk-file-item-info { flex: 1; min-width: 0; }
  .nk-file-item-name { font-size: 0.8125rem; font-weight: 500; }
  .nk-file-item-size { font-size: 0.6875rem; color: var(--nk-text-muted); }

  /* Misc form helpers */
  .mb-nk-md { margin-bottom: 16px; }
  .invalid-feedback { font-size: 0.75rem; color: var(--nk-danger); margin-top: 4px; }
  .page-subtitle { font-size: 0.875rem; color: var(--nk-text-secondary); margin-top: 2px; }

  /* Backward compat */
  .card-nokkeru-title { font-size: 0.9375rem; font-weight: 600; display: flex; align-items: center; gap: 6px; }

  /* Responsive: Dashboard */
  @media (max-width: 767.98px) {
      .nk-db-stats-row { grid-template-columns: repeat(2, 1fr); }
      .nk-db-stat-item:nth-child(2) { border-right: none; }
      .nk-db-grid { grid-template-columns: 1fr; }
      .nk-db-today-header, .nk-db-today-row { grid-template-columns: 50px 1fr 100px; }
      .nk-db-today-col-vehicle { display: none; }
  }
}

/* ============================================================
   LAYER: utilities
   ============================================================ */
@layer utilities {

  /* ---- Display ---- */
  .d-none         { display: none; }
  .d-block        { display: block; }
  .d-inline       { display: inline; }
  .d-inline-block { display: inline-block; }
  .d-flex         { display: flex; }
  .d-inline-flex  { display: inline-flex; }
  .d-grid         { display: grid; }

  @media (min-width: 576px) {
    .d-sm-none         { display: none; }
    .d-sm-block        { display: block; }
    .d-sm-inline       { display: inline; }
    .d-sm-inline-block { display: inline-block; }
    .d-sm-flex         { display: flex; }
  }

  @media (min-width: 768px) {
    .d-md-none         { display: none; }
    .d-md-inline       { display: inline; }
    .d-md-block        { display: block; }
    .d-md-inline-block { display: inline-block; }
    .d-md-flex         { display: flex; }
  }

  @media (min-width: 992px) {
    .d-lg-none         { display: none; }
    .d-lg-inline       { display: inline; }
    .d-lg-block        { display: block; }
    .d-lg-inline-block { display: inline-block; }
    .d-lg-flex         { display: flex; }
  }

  @media (min-width: 1200px) {
    .d-xl-none         { display: none; }
    .d-xl-block        { display: block; }
    .d-xl-flex         { display: flex; }
  }

  /* ---- Flex ---- */
  .flex-row            { flex-direction: row; }
  .flex-column         { flex-direction: column; }
  .flex-wrap           { flex-wrap: wrap; }
  .flex-nowrap         { flex-wrap: nowrap; }
  .flex-1              { flex: 1 1 0%; }
  .flex-auto           { flex: 1 1 auto; }
  .flex-none           { flex: none; }
  .flex-grow-0         { flex-grow: 0; }
  .flex-grow-1         { flex-grow: 1; }
  .flex-shrink-0       { flex-shrink: 0; }
  .flex-shrink-1       { flex-shrink: 1; }

  .justify-content-start   { justify-content: flex-start; }
  .justify-content-end     { justify-content: flex-end; }
  .justify-content-center  { justify-content: center; }
  .justify-content-between { justify-content: space-between; }
  .justify-content-around  { justify-content: space-around; }
  .justify-content-evenly  { justify-content: space-evenly; }

  .align-items-start    { align-items: flex-start; }
  .align-items-end      { align-items: flex-end; }
  .align-items-center   { align-items: center; }
  .align-items-baseline { align-items: baseline; }
  .align-items-stretch  { align-items: stretch; }

  .align-self-start   { align-self: flex-start; }
  .align-self-end     { align-self: flex-end; }
  .align-self-center  { align-self: center; }
  .align-self-stretch { align-self: stretch; }

  .gap-0 { gap: 0; }
  .gap-1 { gap: var(--nk-space-1); }
  .gap-2 { gap: var(--nk-space-2); }
  .gap-3 { gap: var(--nk-space-3); }
  .gap-4 { gap: var(--nk-space-4); }
  .gap-5 { gap: var(--nk-space-5); }
  .gap-6 { gap: var(--nk-space-6); }

  /* ---- Spacing: margin ---- */
  .m-0  { margin: 0; }
  .m-1  { margin: var(--nk-space-1); }
  .m-2  { margin: var(--nk-space-2); }
  .m-3  { margin: var(--nk-space-3); }
  .m-4  { margin: var(--nk-space-4); }
  .m-5  { margin: var(--nk-space-5); }
  .m-auto { margin: auto; }

  .mx-0  { margin-left: 0; margin-right: 0; }
  .mx-1  { margin-left: var(--nk-space-1); margin-right: var(--nk-space-1); }
  .mx-2  { margin-left: var(--nk-space-2); margin-right: var(--nk-space-2); }
  .mx-3  { margin-left: var(--nk-space-3); margin-right: var(--nk-space-3); }
  .mx-4  { margin-left: var(--nk-space-4); margin-right: var(--nk-space-4); }
  .mx-auto { margin-left: auto; margin-right: auto; }

  .my-0  { margin-top: 0; margin-bottom: 0; }
  .my-1  { margin-top: var(--nk-space-1); margin-bottom: var(--nk-space-1); }
  .my-2  { margin-top: var(--nk-space-2); margin-bottom: var(--nk-space-2); }
  .my-3  { margin-top: var(--nk-space-3); margin-bottom: var(--nk-space-3); }
  .my-4  { margin-top: var(--nk-space-4); margin-bottom: var(--nk-space-4); }

  .mt-0  { margin-top: 0; }
  .mt-1  { margin-top: var(--nk-space-1); }
  .mt-2  { margin-top: var(--nk-space-2); }
  .mt-3  { margin-top: var(--nk-space-3); }
  .mt-4  { margin-top: var(--nk-space-4); }
  .mt-5  { margin-top: var(--nk-space-5); }

  .mb-0  { margin-bottom: 0; }
  .mb-1  { margin-bottom: var(--nk-space-1); }
  .mb-2  { margin-bottom: var(--nk-space-2); }
  .mb-3  { margin-bottom: var(--nk-space-3); }
  .mb-4  { margin-bottom: var(--nk-space-4); }
  .mb-5  { margin-bottom: var(--nk-space-5); }

  .ms-0  { margin-left: 0; }
  .ms-1  { margin-left: var(--nk-space-1); }
  .ms-2  { margin-left: var(--nk-space-2); }
  .ms-3  { margin-left: var(--nk-space-3); }
  .ms-4  { margin-left: var(--nk-space-4); }
  .ms-auto { margin-left: auto; }

  .me-0  { margin-right: 0; }
  .me-1  { margin-right: var(--nk-space-1); }
  .me-2  { margin-right: var(--nk-space-2); }
  .me-3  { margin-right: var(--nk-space-3); }
  .me-4  { margin-right: var(--nk-space-4); }
  .me-auto { margin-right: auto; }

  /* ---- Spacing: padding ---- */
  .p-0  { padding: 0; }
  .p-1  { padding: var(--nk-space-1); }
  .p-2  { padding: var(--nk-space-2); }
  .p-3  { padding: var(--nk-space-3); }
  .p-4  { padding: var(--nk-space-4); }
  .p-5  { padding: var(--nk-space-5); }
  .p-6  { padding: var(--nk-space-6); }

  .px-0  { padding-left: 0; padding-right: 0; }
  .px-1  { padding-left: var(--nk-space-1); padding-right: var(--nk-space-1); }
  .px-2  { padding-left: var(--nk-space-2); padding-right: var(--nk-space-2); }
  .px-3  { padding-left: var(--nk-space-3); padding-right: var(--nk-space-3); }
  .px-4  { padding-left: var(--nk-space-4); padding-right: var(--nk-space-4); }
  .px-5  { padding-left: var(--nk-space-5); padding-right: var(--nk-space-5); }

  .py-0  { padding-top: 0; padding-bottom: 0; }
  .py-1  { padding-top: var(--nk-space-1); padding-bottom: var(--nk-space-1); }
  .py-2  { padding-top: var(--nk-space-2); padding-bottom: var(--nk-space-2); }
  .py-3  { padding-top: var(--nk-space-3); padding-bottom: var(--nk-space-3); }
  .py-4  { padding-top: var(--nk-space-4); padding-bottom: var(--nk-space-4); }
  .py-5  { padding-top: var(--nk-space-5); padding-bottom: var(--nk-space-5); }

  .pt-0  { padding-top: 0; }
  .pt-1  { padding-top: var(--nk-space-1); }
  .pt-2  { padding-top: var(--nk-space-2); }
  .pt-3  { padding-top: var(--nk-space-3); }
  .pt-4  { padding-top: var(--nk-space-4); }
  .pt-5  { padding-top: var(--nk-space-5); }

  .pb-0  { padding-bottom: 0; }
  .pb-1  { padding-bottom: var(--nk-space-1); }
  .pb-2  { padding-bottom: var(--nk-space-2); }
  .pb-3  { padding-bottom: var(--nk-space-3); }
  .pb-4  { padding-bottom: var(--nk-space-4); }
  .pb-5  { padding-bottom: var(--nk-space-5); }

  .ps-0  { padding-left: 0; }
  .ps-1  { padding-left: var(--nk-space-1); }
  .ps-2  { padding-left: var(--nk-space-2); }
  .ps-3  { padding-left: var(--nk-space-3); }
  .ps-4  { padding-left: var(--nk-space-4); }

  .pe-0  { padding-right: 0; }
  .pe-1  { padding-right: var(--nk-space-1); }
  .pe-2  { padding-right: var(--nk-space-2); }
  .pe-3  { padding-right: var(--nk-space-3); }
  .pe-4  { padding-right: var(--nk-space-4); }

  /* ---- Text ---- */
  .text-left    { text-align: left; }
  .text-start   { text-align: left; }
  .text-center  { text-align: center; }
  .text-right   { text-align: right; }
  .text-end     { text-align: right; }
  .text-justify { text-align: justify; }

  .text-xs   { font-size: var(--nk-text-xs); }
  .text-sm   { font-size: var(--nk-text-sm); }
  .text-base { font-size: var(--nk-text-base); }
  .text-lg   { font-size: var(--nk-text-lg); }
  .text-xl   { font-size: var(--nk-text-xl); }
  .text-2xl  { font-size: var(--nk-text-2xl); }
  .text-3xl  { font-size: var(--nk-text-3xl); }

  .font-normal   { font-weight: var(--nk-weight-normal); }
  .font-medium   { font-weight: var(--nk-weight-medium); }
  .font-semibold { font-weight: var(--nk-weight-semibold); }
  .font-bold     { font-weight: var(--nk-weight-bold); }

  /* Bootstrap fw-* aliases */
  .fw-normal   { font-weight: var(--nk-weight-normal); }
  .fw-medium   { font-weight: var(--nk-weight-medium); }
  .fw-semibold { font-weight: var(--nk-weight-semibold); }

  /* Bootstrap fs-* font-size scale */
  .fs-1 { font-size: 2.5rem; }
  .fs-2 { font-size: 2rem; }
  .fs-3 { font-size: 1.75rem; }
  .fs-4 { font-size: 1.5rem; }
  .fs-5 { font-size: 1.25rem; }
  .fs-6 { font-size: 1rem; }

  .leading-tight   { line-height: var(--nk-leading-tight); }
  .leading-normal  { line-height: var(--nk-leading-normal); }
  .leading-relaxed { line-height: var(--nk-leading-relaxed); }

  .text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .text-wrap    { white-space: normal; }
  .text-nowrap  { white-space: nowrap; }
  .text-break   { word-break: break-word; overflow-wrap: break-word; }
  .text-uppercase   { text-transform: uppercase; }
  .text-lowercase   { text-transform: lowercase; }
  .text-capitalize  { text-transform: capitalize; }
  .text-decoration-none { text-decoration: none; }
  .text-underline       { text-decoration: underline; }

  /* ---- Text colors ---- */
  .text-primary   { color: var(--nk-color-primary); }
  .text-success   { color: var(--nk-color-success); }
  .text-danger    { color: var(--nk-color-danger); }
  .text-warning   { color: var(--nk-color-warning); }
  .text-info      { color: var(--nk-color-info); }
  .text-muted     { color: var(--nk-color-text-muted); }
  .text-secondary { color: var(--nk-color-text-secondary); }
  .text-white     { color: var(--nk-color-text-inverse); }
  .text-dark      { color: var(--nk-color-text); }

  /* ---- Background colors ---- */
  .bg-primary { background-color: var(--nk-color-primary); }
  .bg-success { background-color: var(--nk-color-success); }
  .bg-danger  { background-color: var(--nk-color-danger); }
  .bg-warning { background-color: var(--nk-color-warning); }
  .bg-info    { background-color: var(--nk-color-info); }
  .bg-white   { background-color: var(--nk-color-bg-white); }
  .bg-light   { background-color: var(--nk-bg); }
  .bg-muted   { background-color: var(--nk-color-bg-muted); }
  .bg-secondary { background-color: var(--nk-color-bg-muted); }
  .bg-transparent { background-color: transparent; }

  .bg-primary-light { background-color: var(--nk-color-primary-bg); }
  .bg-success-light { background-color: var(--nk-color-success-bg); }
  .bg-danger-light  { background-color: var(--nk-color-danger-bg); }
  .bg-warning-light { background-color: var(--nk-color-warning-bg); }
  .bg-info-light    { background-color: var(--nk-color-info-bg); }

  /* ---- Borders ---- */
  .border     { border: 1px solid var(--nk-color-border); }
  .border-0   { border: 0; }
  .border-top { border-top: 1px solid var(--nk-color-border); }
  .border-bottom { border-bottom: 1px solid var(--nk-color-border); }
  .border-start  { border-left: 1px solid var(--nk-color-border); }
  .border-end    { border-right: 1px solid var(--nk-color-border); }
  .border-top-0    { border-top: 0 !important; }
  .border-bottom-0 { border-bottom: 0 !important; }
  .border-start-0  { border-left: 0 !important; }
  .border-end-0    { border-right: 0 !important; }
  .border-2 { border-width: 2px; }
  .border-3 { border-width: 3px; }

  .border-primary { border-color: var(--nk-color-primary); }
  .border-success { border-color: var(--nk-color-success); }
  .border-danger  { border-color: var(--nk-color-danger); }
  .border-warning { border-color: var(--nk-color-warning); }

  .rounded-0    { border-radius: 0; }
  .rounded-sm   { border-radius: var(--nk-radius-sm); }
  .rounded      { border-radius: var(--nk-radius-md); }
  .rounded-md   { border-radius: var(--nk-radius-md); }
  .rounded-lg   { border-radius: var(--nk-radius-lg); }
  .rounded-xl   { border-radius: var(--nk-radius-xl); }
  .rounded-full { border-radius: var(--nk-radius-full); }
  .rounded-pill { border-radius: 9999px; }
  .rounded-circle { border-radius: 50%; }

  /* ---- Width / Height ---- */
  .w-25   { width: 25%; }
  .w-50   { width: 50%; }
  .w-75   { width: 75%; }
  .w-100  { width: 100%; }
  .w-auto { width: auto; }
  .mw-100 { max-width: 100%; }
  .min-w-0 { min-width: 0; }

  .h-25   { height: 25%; }
  .h-50   { height: 50%; }
  .h-75   { height: 75%; }
  .h-100  { height: 100%; }
  .h-auto { height: auto; }
  .min-h-screen { min-height: 100dvh; }

  /* ---- Position ---- */
  .position-static   { position: static; }
  .position-relative { position: relative; }
  .position-absolute { position: absolute; }
  .position-fixed    { position: fixed; }
  .position-sticky   { position: sticky; }

  .top-0    { top: 0; }
  .right-0  { right: 0; }
  .bottom-0 { bottom: 0; }
  .left-0   { left: 0; }
  .inset-0  { inset: 0; }

  /* ---- Overflow ---- */
  .overflow-auto    { overflow: auto; }
  .overflow-hidden  { overflow: hidden; }
  .overflow-visible { overflow: visible; }
  .overflow-scroll  { overflow: scroll; }
  .overflow-x-auto  { overflow-x: auto; }
  .overflow-y-auto  { overflow-y: auto; }

  /* ---- Shadow ---- */
  .shadow-none { box-shadow: none; }
  .shadow-xs   { box-shadow: var(--nk-shadow-xs); }
  .shadow-sm   { box-shadow: var(--nk-shadow-sm); }
  .shadow      { box-shadow: var(--nk-shadow-md); }
  .shadow-md   { box-shadow: var(--nk-shadow-md); }
  .shadow-lg   { box-shadow: var(--nk-shadow-lg); }
  .shadow-xl   { box-shadow: var(--nk-shadow-xl); }

  /* ---- Opacity ---- */
  .opacity-0   { opacity: 0; }
  .opacity-25  { opacity: 0.25; }
  .opacity-50  { opacity: 0.5; }
  .opacity-75  { opacity: 0.75; }
  .opacity-100 { opacity: 1; }

  /* ---- Cursor ---- */
  .cursor-pointer  { cursor: pointer; }
  .cursor-default  { cursor: default; }
  .cursor-not-allowed { cursor: not-allowed; }

  /* ---- User select ---- */
  .select-none { user-select: none; }
  .select-all  { user-select: all; }
  .select-auto { user-select: auto; }

  /* ---- Visibility ---- */
  .visible   { visibility: visible; }
  .invisible { visibility: hidden; }

  /* ---- Z-index ---- */
  .z-0    { z-index: 0; }
  .z-10   { z-index: 10; }
  .z-20   { z-index: 20; }
  .z-30   { z-index: 30; }
  .z-40   { z-index: 40; }
  .z-50   { z-index: 50; }
  .z-auto { z-index: auto; }

  /* ---- Transition ---- */
  .transition-none { transition: none; }
  .transition-all  { transition: all var(--nk-transition-base); }
  .transition-fast { transition: all var(--nk-transition-fast); }

  /* ---- SR only (accessibility) ---- */
  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
  }

  /* ---- Print ---- */
  @media print {
    .d-print-none  { display: none; }
    .d-print-block { display: block; }
    .d-print-flex  { display: flex; }
  }

  /* ===== Missing backward compat: all-page components ===== */

  /* Stats grid */
  .stats-grid-nokkeru { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 20px; }
  .stat-card-nokkeru { background: var(--nk-surface); border: 1px solid var(--nk-border); border-radius: var(--nk-radius-lg); padding: 16px; display: flex; align-items: center; gap: 12px; }
  .stat-card-nokkeru-danger { border-left: 3px solid var(--nk-danger); }
  .stat-card-nokkeru-warning { border-left: 3px solid var(--nk-warning); }
  .stat-card-nokkeru-muted { opacity: 0.7; }
  .stat-card-nokkeru-primary { border-left: 3px solid var(--nk-primary); }
  .stat-value-nokkeru { font-size: 1.5rem; font-weight: 700; line-height: 1.2; }
  .stat-label-nokkeru { font-size: 0.75rem; color: var(--nk-text-secondary); }
  .stat-icon-nokkeru { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

  /* List */
  .list-nokkeru { list-style: none; padding: 0; margin: 0; }
  .list-item-nokkeru { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-bottom: 1px solid var(--nk-border); transition: background 0.15s ease; }
  .list-item-nokkeru:last-child { border-bottom: none; }
  .list-item-nokkeru:hover { background: var(--nk-bg); }
  .list-item-nokkeru-highlight { background: #fffbeb; }
  .list-item-title { font-weight: 600; font-size: 0.875rem; }
  .list-item-meta { font-size: 0.75rem; color: var(--nk-text-secondary); }
  .list-item-actions { display: flex; gap: 4px; margin-left: auto; }
  .ui-list-item-icon { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 0.875rem; }
  .ui-list-item-content { flex: 1; min-width: 0; }

  /* Info grid */
  .ui-info-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
  .ui-info-item { display: flex; flex-direction: column; gap: 2px; }
  .ui-info-label { font-size: 0.75rem; color: var(--nk-text-secondary); display: flex; align-items: center; gap: 4px; }
  .ui-info-value { font-size: 0.875rem; font-weight: 500; }

  /* Form select */
  .form-select-nokkeru { display: block; width: 100%; padding: 8px 32px 8px 12px; font-size: 0.875rem; line-height: 1.5; color: var(--nk-text); background: var(--nk-surface); border: 1px solid var(--nk-border); border-radius: var(--nk-radius-md); appearance: none; background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m2 5 6 6 6-6'/%3e%3c/svg%3e"); background-repeat: no-repeat; background-position: right 10px center; background-size: 14px; transition: border-color 0.15s ease, box-shadow 0.15s ease; }
  .form-select-nokkeru:focus { outline: none; border-color: var(--nk-primary); box-shadow: 0 0 0 3px rgba(30,58,95,0.15); }

  /* Tabs */
  .tabs-nokkeru { display: flex; border-bottom: 2px solid var(--nk-border); margin-bottom: 16px; gap: 0; }
  .tab-nokkeru { padding: 10px 20px; font-size: 0.875rem; font-weight: 500; color: var(--nk-text-secondary); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px; transition: color 0.15s ease, border-color 0.15s ease; text-decoration: none; background: none; border-top: none; border-left: none; border-right: none; }
  .tab-nokkeru:hover { color: var(--nk-primary); }
  .tab-nokkeru.active { color: var(--nk-primary); border-bottom-color: var(--nk-primary); font-weight: 600; }

  /* Overflow button */
  .nk-overflow-btn { background: none; border: none; padding: 6px; cursor: pointer; color: var(--nk-text-secondary); border-radius: var(--nk-radius-md); transition: background 0.15s ease; }
  .nk-overflow-btn:hover { background: var(--nk-bg); }

  /* Input group text */
  .nk-input-group { display: flex; }
  .nk-input-group .form-control-nokkeru, .nk-input-group .nk-input { border-radius: var(--nk-radius-md) 0 0 var(--nk-radius-md); border-right: none; }
  .nk-input-group-text { display: flex; align-items: center; padding: 8px 12px; font-size: 0.875rem; color: var(--nk-text-secondary); background: var(--nk-bg); border: 1px solid var(--nk-border); border-left: none; border-radius: 0 var(--nk-radius-md) var(--nk-radius-md) 0; }

  /* Invalid feedback */
  .nk-invalid-feedback { font-size: 0.75rem; color: var(--nk-danger); margin-top: 4px; }
  .is-invalid { border-color: var(--nk-danger); }

  /* Bootstrap .table compat */
  .table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
  .table th, .table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--nk-border); }
  .table th { font-weight: 600; font-size: 0.75rem; color: var(--nk-text-secondary); }
  .table tbody tr:hover { background: var(--nk-bg); }
  .table-striped tbody tr:nth-child(even) { background: var(--nk-bg); }
  .table-responsive { overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Bootstrap .badge compat */
  .badge { display: inline-flex; align-items: center; padding: 3px 8px; font-size: 0.6875rem; font-weight: 600; border-radius: 9999px; line-height: 1.2; }
  .badge.bg-success, .badge-success { background: #d1fae5; color: #065f46; }
  .badge.bg-warning, .badge-warning { background: #fef3c7; color: #92400e; }
  .badge.bg-danger, .badge-danger { background: #fee2e2; color: #991b1b; }
  .badge.bg-info, .badge-info { background: #dbeafe; color: #1e40af; }
  .badge.bg-secondary, .badge-secondary { background: #f1f5f9; color: #475569; }
  .badge.bg-primary, .badge-primary { background: #dbeafe; color: #1e3a5f; }

  /* Sidebar divider & section label */
  .sidebar-divider { border: none; border-top: 1px solid var(--nk-border); margin: 8px 12px; }
  .sidebar-section-label { font-size: 0.625rem; font-weight: 600; text-transform: uppercase; color: var(--nk-text-muted); padding: 12px 16px 4px; letter-spacing: 0.05em; }

  /* Pagination */
  .pagination-nokkeru { display: flex; justify-content: center; gap: 4px; list-style: none; padding: 16px 0; margin: 0; }
  .pagination-nokkeru .page-item .page-link, .pagination-nokkeru a, .pagination-nokkeru span { display: inline-flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; padding: 0 8px; font-size: 0.8125rem; border-radius: var(--nk-radius-md); border: 1px solid var(--nk-border); color: var(--nk-text); background: var(--nk-surface); text-decoration: none; transition: background 0.15s ease; }
  .pagination-nokkeru .page-item.active .page-link, .pagination-nokkeru .active > span { background: var(--nk-primary); color: #fff; border-color: var(--nk-primary); }
  .pagination-nokkeru .page-item.disabled .page-link, .pagination-nokkeru .disabled > span { opacity: 0.5; pointer-events: none; }
  .pagination-nokkeru a:hover { background: var(--nk-bg); }

  /* Form helpers */
  .nk-form-text { font-size: 0.75rem; color: var(--nk-text-muted); margin-top: 4px; display: flex; align-items: center; gap: 4px; }

  /* Heading compat */
  h1, h2, h3, h4, h5, h6 { line-height: 1.3; }
  .h2 { font-size: 1.5rem; font-weight: 700; }
  .h5 { font-size: 1.125rem; font-weight: 600; }
  small { font-size: 0.8125rem; }

  /* Row/Col additional compat */
  .col-md-3, .col-lg-2 { }
  @media (min-width: 768px) {
    .col-md-3 { flex: 0 0 25%; max-width: 25%; }
    .col-md-4 { flex: 0 0 33.333%; max-width: 33.333%; }
    .col-md-6 { flex: 0 0 50%; max-width: 50%; }
    .col-md-8 { flex: 0 0 66.667%; max-width: 66.667%; }
    .col-md-9 { flex: 0 0 75%; max-width: 75%; }
    .col-md-12 { flex: 0 0 100%; max-width: 100%; }
  }
  @media (min-width: 1024px) {
    .col-lg-2 { flex: 0 0 16.667%; max-width: 16.667%; }
    .col-lg-3 { flex: 0 0 25%; max-width: 25%; }
    .col-lg-4 { flex: 0 0 33.333%; max-width: 33.333%; }
    .col-lg-6 { flex: 0 0 50%; max-width: 50%; }
    .col-lg-10 { flex: 0 0 83.333%; max-width: 83.333%; }
  }

  /* ===== Chat/Message Detail Page (LINE風) ===== */

  /* Image preview in modal */
  .nk-image-preview-img { max-width: 100%; max-height: 70vh; border-radius: 8px; }

  /* Button icon variant */
  .btn-nk-icon {
      width: 40px; height: 40px; padding: 0;
      display: inline-flex; align-items: center; justify-content: center;
      border-radius: 50%; border: 1px solid var(--nk-border);
      background: var(--nk-surface); cursor: pointer;
      transition: background 0.15s ease;
  }
  .btn-nk-icon:hover { background: var(--nk-bg); }

  /* Avatar sizes */
  .nk-avatar-sm { width: 32px; height: 32px; font-size: 0.75rem; }
  .nk-avatar-xs { width: 24px; height: 24px; font-size: 0.625rem; }

  /* ---- Bootstrap input-group compat ---- */
  .input-group { display: flex; align-items: stretch; }
  .input-group > * { min-width: 0; }
  .input-group > .form-control-nokkeru { flex: 1 1 auto; }
  .input-group > *:not(:first-child) { border-top-left-radius: 0; border-bottom-left-radius: 0; border-left: none; }
  .input-group > *:not(:last-child) { border-top-right-radius: 0; border-bottom-right-radius: 0; }
  .input-group-text { display: flex; align-items: center; padding: 8px 12px; font-size: 0.875rem; color: var(--nk-text-secondary); background: var(--nk-bg); border: 1px solid var(--nk-border); white-space: nowrap; }

  /* ---- Bootstrap nav / nav-tabs compat ---- */
  .nav { display: flex; flex-wrap: wrap; padding: 0; margin: 0; list-style: none; }
  .nav-tabs { border-bottom: 2px solid var(--nk-border); gap: 0; }
  .nav-item { flex: 0 0 auto; }
  .nav-link { display: flex; align-items: center; gap: 6px; padding: 8px 16px; font-size: 0.875rem; font-weight: 500; color: var(--nk-text-secondary); text-decoration: none; border: 2px solid transparent; margin-bottom: -2px; border-radius: var(--nk-radius-md) var(--nk-radius-md) 0 0; transition: color 0.15s ease, background 0.15s ease; background: none; cursor: pointer; }
  .nav-link:hover { color: var(--nk-primary); background: var(--nk-bg); }
  .nav-tabs .nav-link.active { color: var(--nk-primary); background: var(--nk-surface); border-color: var(--nk-border) var(--nk-border) var(--nk-surface); font-weight: 600; }
  .tab-content { }
  .tab-pane { display: none; }
  .tab-pane.active { display: block; }

  /* ---- Bootstrap form-check / form-switch compat ---- */
  .form-check { display: flex; align-items: center; gap: 8px; padding: 0; min-height: 1.5rem; }
  .form-check-input { flex-shrink: 0; cursor: pointer; }
  .form-check-label { cursor: pointer; font-size: 0.875rem; }
  .form-switch .form-check-input {
    width: 2.5rem; height: 1.25rem; appearance: none; border-radius: 1.25rem;
    background-color: var(--nk-border);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e");
    background-repeat: no-repeat; background-position: left center;
    background-size: calc(1.25rem - 4px);
    transition: background-position 0.15s ease, background-color 0.15s ease;
    border: 1px solid var(--nk-border); cursor: pointer; margin: 0;
  }
  .form-switch .form-check-input:checked { background-color: var(--nk-primary); background-position: right center; border-color: var(--nk-primary); }

  /* ---- Bootstrap btn-lg / btn-sm size modifiers ---- */
  .btn-lg { padding: 12px 24px; font-size: 1rem; }
  .btn-sm { padding: 4px 10px; font-size: 0.8125rem; }

  /* ---- Bootstrap form-control compat (for legacy inputs not yet migrated) ---- */
  .form-control { display: block; width: 100%; padding: 8px 12px; font-size: 0.875rem; line-height: 1.5; color: var(--nk-text); background: var(--nk-surface); border: 1px solid var(--nk-border); border-radius: var(--nk-radius-md); transition: border-color 0.15s ease, box-shadow 0.15s ease; }
  .form-control:focus { outline: none; border-color: var(--nk-primary); box-shadow: 0 0 0 3px rgba(30,58,95,0.15); }

  /* ---- Bootstrap btn-check / btn-group / btn-outline-* compat ---- */
  .btn-check { position: absolute; clip: rect(0,0,0,0); pointer-events: none; }
  .btn-group { display: inline-flex; border-radius: var(--nk-radius-md); border: 1px solid var(--nk-border); overflow: hidden; }
  .btn-group.w-100 { display: flex; width: 100%; }
  .btn { display: inline-flex; align-items: center; justify-content: center; gap: 4px; padding: 8px 16px; font-size: 0.875rem; font-weight: 500; line-height: 1.5; border: none; border-radius: 0; cursor: pointer; transition: all 0.15s ease; white-space: nowrap; user-select: none; flex: 1; background: transparent; }
  .btn-group > label:first-of-type { border-right: 1px solid var(--nk-border); }
  .btn-outline-primary { color: var(--nk-primary); }
  .btn-outline-primary:hover { background: rgba(30,58,95,0.08); }
  .btn-check:checked + .btn-outline-primary { background: var(--nk-primary); color: #fff; }
  .btn-outline-success { color: var(--nk-success); }
  .btn-outline-success:hover { background: rgba(16,185,129,0.08); }
  .btn-check:checked + .btn-outline-success { background: var(--nk-success); color: #fff; }

  /* ---- Bootstrap heading size class compat ---- */
  .h3 { font-size: 1.75rem; font-weight: 700; }
  .h4 { font-size: 1.5rem; font-weight: 600; }
  .h6 { font-size: 1rem; font-weight: 600; }
}