/**
 * ARONION ACADEMY — Design System v2.0
 * Enterprise Learning Management Platform
 *
 * Table of Contents:
 * 1. Design Tokens
 * 2. Reset & Base
 * 3. Typography
 * 4. Layout Shell (App, Sidebar, Topbar, Content)
 * 5. Sidebar Component
 * 6. Learner Navbar Component
 * 7. Buttons
 * 8. Form Controls
 * 9. Cards & Panels
 * 10. Data Tables
 * 11. Badges
 * 12. Tabs
 * 13. Alerts & Toasts
 * 14. Modals & Dialogs
 * 15. Pagination
 * 16. Progress Bars
 * 17. Metric Cards (Dashboard)
 * 18. Toolbar & Search
 * 19. Empty States
 * 20. Utilities
 */

/* ==========================================================================
   1. DESIGN TOKENS
   ========================================================================== */

:root {
    /* --- Primary (Deep Teal) --- */
    --color-primary-50:  #f0fdfa;
    --color-primary-100: #ccfbf1;
    --color-primary-200: #99f6e4;
    --color-primary-300: #5eead4;
    --color-primary-400: #2dd4bf;
    --color-primary-500: #0d9488;
    --color-primary-600: #0d6e6e;
    --color-primary-700: #0a5a5a;
    --color-primary-800: #084848;
    --color-primary-900: #053535;

    /* --- Neutrals (Zinc — warmer than Slate) --- */
    --color-gray-50:  #fafafa;
    --color-gray-100: #f4f4f5;
    --color-gray-200: #e4e4e7;
    --color-gray-300: #d4d4d8;
    --color-gray-400: #a1a1aa;
    --color-gray-500: #71717a;
    --color-gray-600: #52525b;
    --color-gray-700: #3f3f46;
    --color-gray-800: #27272a;
    --color-gray-900: #18181b;

    /* --- Semantic Colors --- */
    --color-success-50:  #f0fdf4;
    --color-success-100: #dcfce7;
    --color-success-500: #22c55e;
    --color-success-600: #16a34a;
    --color-success-700: #15803d;

    --color-warning-50:  #fefce8;
    --color-warning-100: #fef9c3;
    --color-warning-500: #eab308;
    --color-warning-600: #ca8a04;
    --color-warning-700: #a16207;

    --color-danger-50:  #fef2f2;
    --color-danger-100: #fee2e2;
    --color-danger-500: #ef4444;
    --color-danger-600: #dc2626;
    --color-danger-700: #b91c1c;

    --color-info-50:  #eff6ff;
    --color-info-100: #dbeafe;
    --color-info-500: #3b82f6;
    --color-info-600: #2563eb;
    --color-info-700: #1d4ed8;

    /* --- Theme Abstractions --- */
    --bg-app:            var(--color-gray-50);
    --bg-surface:        #ffffff;
    --bg-muted:          var(--color-gray-100);
    --text-primary:      var(--color-gray-900);
    --text-secondary:    var(--color-gray-500);
    --text-tertiary:     var(--color-gray-400);
    --border-color:      var(--color-gray-200);
    --border-subtle:     var(--color-gray-100);
    --ring-color:        var(--color-primary-200);

    /* --- Backward-Compatible Aliases (fix 321 broken refs) --- */
    --border:            var(--border-color);
    --text-main:         var(--text-primary);
    --text-muted:        var(--text-secondary);
    --accent:            var(--color-primary-600);
    --surface-hover:     var(--color-gray-100);
    --surface-color:     var(--bg-surface);
    --success-color:     var(--color-success-600);
    --warning-color:     var(--color-warning-600);
    --danger-color:      var(--color-danger-600);

    /* ── Short-form aliases (used across many pages) ── */
    --bg:              var(--bg-app);
    --bg-card:         var(--bg-surface);
    --surface:         var(--bg-surface);
    --radius:          var(--radius-md);
    --color-primary:   var(--color-primary-600);

    /* Legacy Slate aliases (some pages still use these) */
    --color-slate-50:  var(--color-gray-50);
    --color-slate-100: var(--color-gray-100);
    --color-slate-200: var(--color-gray-200);
    --color-slate-300: var(--color-gray-300);
    --color-slate-400: var(--color-gray-400);
    --color-slate-500: var(--color-gray-500);
    --color-slate-600: var(--color-gray-600);
    --color-slate-700: var(--color-gray-700);
    --color-slate-800: var(--color-gray-800);
    --color-slate-900: var(--color-gray-900);

    /* --- Sidebar --- */
    --sidebar-bg:          var(--color-gray-900);
    --sidebar-text:        var(--color-gray-400);
    --sidebar-text-hover:  #ffffff;
    --sidebar-active-bg:   rgba(13, 148, 136, 0.1);
    --sidebar-active-text: #ffffff;
    --sidebar-active-border: var(--color-primary-500);
    --sidebar-width:       260px;
    --sidebar-collapsed:   68px;

    /* --- Layout --- */
    --header-height:       56px;
    --content-max-width:   1400px;
    --content-narrow:      800px;

    /* --- Typography --- */
    --font-sans:  'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:  'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

    --text-xs:    0.75rem;
    --text-sm:    0.8125rem;
    --text-base:  0.875rem;
    --text-md:    0.9375rem;
    --text-lg:    1.0625rem;
    --text-xl:    1.25rem;
    --text-2xl:   1.5rem;
    --text-3xl:   1.75rem;

    /* --- Spacing (4px base) --- */
    --space-0:  0;
    --space-1:  0.25rem;
    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-5:  1.25rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    /* --- Radii --- */
    --radius-xs:   2px;
    --radius-sm:   4px;
    --radius-base: 6px;
    --radius-md:   8px;
    --radius-lg:   12px;
    --radius-xl:   16px;
    --radius-full: 9999px;

    /* --- Shadows (subtle, enterprise-grade) --- */
    --shadow-xs:  0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm:  0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-base: var(--shadow-sm);
    --shadow-md:  0 4px 8px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg:  0 8px 24px -4px rgba(0, 0, 0, 0.08), 0 4px 8px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl:  0 20px 40px -8px rgba(0, 0, 0, 0.1);

    /* --- Transitions --- */
    --ease-out:        cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out:     cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: 120ms var(--ease-in-out);
    --transition-base: 200ms var(--ease-in-out);
    --transition-slow: 300ms var(--ease-out);
}


/* ==========================================================================
   2. RESET & BASE
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-app);
}

a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary-600); }

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

img, svg { display: block; max-width: 100%; }
table { border-collapse: collapse; border-spacing: 0; }
input, select, textarea { font-family: inherit; font-size: inherit; }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-gray-300); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-gray-400); }


/* ==========================================================================
   3. TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.01em;
    margin-bottom: var(--space-3);
}
h1 { font-size: var(--text-3xl); font-weight: 600; }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); font-weight: 600; }

p { margin-bottom: var(--space-3); color: var(--text-secondary); line-height: 1.6; }
p:last-child { margin-bottom: 0; }

small, .text-sm { font-size: var(--text-sm); }
.text-xs { font-size: var(--text-xs); }
.text-lg { font-size: var(--text-lg); }
.text-muted { color: var(--text-secondary); }
.text-danger { color: var(--color-danger-600); }
.text-success { color: var(--color-success-600); }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-mono { font-family: var(--font-mono); }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }


/* ==========================================================================
   4. LAYOUT SHELL
   ========================================================================== */

.app-shell {
    display: flex;
    min-height: 100vh;
    overflow: hidden;
}

/* Main View */
.main-view {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    background-color: var(--bg-app);
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
}
.main-view.expanded { margin-left: var(--sidebar-collapsed); }

/* Learner Mode (no sidebar) */
.app-shell.learner-mode { flex-direction: column; }
.app-shell.learner-mode .main-view.main-view-learner {
    margin-left: 0;
    height: auto;
    overflow: visible;
}

/* Top Navigation Bar */
.top-nav {
    height: var(--header-height);
    min-height: var(--header-height);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 var(--space-6);
    position: sticky;
    top: 0;
    z-index: 40;
    gap: var(--space-4);
}

.top-nav-title {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 1;
    min-width: 0;
}
.top-nav-title strong {
    color: var(--text-primary);
    font-weight: 600;
}
.top-nav-title a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.top-nav-title a:hover {
    color: var(--text-primary);
}
.top-nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
    margin-left: auto;
}

/* Page Header */
.page-header {
    padding: var(--space-6) var(--space-6) 0;
    max-width: var(--content-max-width);
    margin: 0 auto;
    width: 100%;
}
.page-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}
.page-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin-bottom: var(--space-5);
}
/* Section label — small uppercase heading used inside card bodies */
.section-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

/* Content Area */
.content-area {
    padding: var(--space-6);
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
}
.content-narrow {
    max-width: var(--content-narrow);
}


/* ==========================================================================
   5. SIDEBAR
   ========================================================================== */

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: width var(--transition-base), transform var(--transition-base);
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }

/* Brand */
.sidebar .sidebar-brand {
    padding: var(--space-5) var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    min-height: var(--header-height);
}
.sidebar .sidebar-brand img {
    height: 24px;
    width: auto;
    filter: brightness(0) invert(1);
    flex-shrink: 0;
}
.sidebar .sidebar-brand .label {
    font-weight: 700;
    font-size: var(--text-lg);
    color: #fff;
    letter-spacing: -0.02em;
    white-space: nowrap;
}

/* Nav */
.sidebar nav {
    flex: 1;
    padding: var(--space-4) 0;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar .nav-section {
    margin-bottom: var(--space-2);
}

.sidebar .nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 7px var(--space-4);
    margin: 1px var(--space-3);
    color: var(--sidebar-text);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--text-sm);
    border-radius: var(--radius-base);
    transition: all var(--transition-fast);
    position: relative;
    border-left: 2px solid transparent;
    border-radius: 0 var(--radius-base) var(--radius-base) 0;
    margin-left: 0;
    padding-left: calc(var(--space-4) + 2px);
}

.sidebar .nav-item:hover {
    color: var(--sidebar-text-hover);
    background: rgba(255, 255, 255, 0.04);
}

.sidebar .nav-item.active {
    color: #fff;
    background: var(--sidebar-active-bg);
    font-weight: 600;
    border-left-color: var(--sidebar-active-border);
}

.sidebar .icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    opacity: 0.7;
}
.sidebar .nav-item:hover .icon,
.sidebar .nav-item.active .icon { opacity: 1; }

/* Section Titles */
.sidebar-section-title {
    margin: var(--space-5) var(--space-5) var(--space-2);
    font-size: 10px;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* Collapsible Nav Group */
.sidebar .nav-group-toggle {
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-3) var(--space-2) var(--space-5);
    font-size: var(--text-sm);
    font-weight: 500;
    color: rgba(255,255,255,0.55);
    border-left: 2px solid transparent;
    transition: color 0.15s, background 0.15s;
    margin: 1px var(--space-2);
    border-radius: var(--radius-base);
}
.sidebar .nav-group-toggle:hover { color: rgba(255,255,255,0.9); background: rgba(255,255,255,0.06); }
.sidebar .nav-group.open .nav-group-toggle { color: rgba(255,255,255,0.9); }
.sidebar .nav-chevron { margin-left: auto; transition: transform 0.2s ease; opacity: 0.5; flex-shrink: 0; }
.sidebar .nav-group.open .nav-chevron { transform: rotate(180deg); opacity: 0.8; }
.sidebar .nav-sub { display: none; padding-left: var(--space-4); margin-bottom: var(--space-1); }
.sidebar .nav-group.open .nav-sub { display: block; }
.sidebar .nav-sub-item {
    padding: 6px var(--space-3) 6px var(--space-4) !important;
    font-size: 12px !important;
    border-left: 2px solid transparent !important;
    margin: 1px 4px !important;
}
.sidebar .nav-sub-item.active { color: #fff !important; border-left-color: rgba(255,255,255,0.4) !important; background: rgba(255,255,255,0.07) !important; }
.sidebar.collapsed .nav-group { display: none; }

/* Footer / Profile */
.sidebar .sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: auto;
}

.sidebar .user-block {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
    margin-bottom: var(--space-3);
}
.sidebar .user-block:hover { background: rgba(255, 255, 255, 0.04); }

.sidebar .user-avatar-sm {
    width: 32px;
    height: 32px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: var(--color-gray-300);
    font-size: 11px;
    flex-shrink: 0;
    overflow: hidden;
}
.sidebar .user-avatar-sm img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sidebar .user-details .label {
    overflow: hidden;
}
.sidebar .user-details .user-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
}
.sidebar .user-details .user-sub {
    font-size: var(--text-xs);
    color: var(--sidebar-text);
    margin-top: 1px;
}

.sidebar .logout-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 6px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-base);
    color: var(--color-gray-400);
    font-size: var(--text-xs);
    font-weight: 500;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}
.sidebar .logout-btn:hover {
    background: rgba(220, 38, 38, 0.1);
    color: var(--color-danger-500);
}

/* Collapsed states */
.sidebar.collapsed .label,
.sidebar.collapsed .sidebar-section-title,
.sidebar.collapsed .user-details { display: none !important; }

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: var(--space-2) 0;
    margin: 1px var(--space-2);
    border-left: none;
    border-radius: var(--radius-base);
    padding-left: 0;
}

.sidebar.collapsed .sidebar-brand {
    justify-content: center;
    padding: var(--space-5) 0;
}

.sidebar.collapsed .user-block {
    justify-content: center;
    padding: var(--space-2) 0;
}

.sidebar.collapsed .logout-btn {
    padding: 6px;
}


/* ==========================================================================
   6. LEARNER NAVBAR
   ========================================================================== */

.learner-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--space-6);
    height: var(--header-height);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
}

.learner-navbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.learner-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--text-primary);
}
.learner-brand img { height: 24px; width: auto; }
.learner-brand-text {
    font-weight: 700;
    font-size: var(--text-lg);
    letter-spacing: -0.02em;
}

.learner-nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-left: var(--space-4);
    border-left: 1px solid var(--border-color);
    padding-left: var(--space-6);
    height: 28px;
}

.learner-nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 6px var(--space-3);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--text-sm);
    border-radius: var(--radius-base);
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.learner-nav-item:hover {
    color: var(--text-primary);
    background: var(--bg-muted);
}
.learner-nav-item.active {
    color: var(--text-primary);
    background: var(--bg-muted);
}

/* Profile Menu */
.learner-profile-menu { position: relative; }

.learner-profile-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-full);
    transition: background var(--transition-fast);
}
.learner-profile-btn:hover { background: var(--bg-muted); }

.learner-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-gray-800);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    overflow: hidden;
}
.learner-avatar img { width: 100%; height: 100%; object-fit: cover; }

.learner-profile-name {
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--text-primary);
    display: none;
}
@media (min-width: 768px) {
    .learner-profile-name { display: block; }
}

.learner-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    right: 0;
    width: 220px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all 150ms var(--ease-out);
    z-index: 1001;
    padding: var(--space-1);
}
.learner-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.learner-dropdown-header {
    padding: var(--space-3) var(--space-3);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-1);
}
.learner-dropdown-header .name { font-weight: 600; font-size: var(--text-sm); color: var(--text-primary); }
.learner-dropdown-header .email { font-size: var(--text-xs); color: var(--text-secondary); margin-top: 1px; }

.learner-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px var(--space-3);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--radius-base);
    transition: background var(--transition-fast);
}
.learner-dropdown-item:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}
.learner-dropdown-divider { height: 1px; background: var(--border-color); margin: var(--space-1) 0; }
.learner-dropdown-item.logout { color: var(--color-danger-600); }
.learner-dropdown-item.logout:hover { background: var(--color-danger-50); color: var(--color-danger-700); }


/* ==========================================================================
   7. BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 8px 14px;
    font-size: var(--text-sm);
    font-weight: 500;
    line-height: 1.25;
    border-radius: var(--radius-base);
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    outline: none;
    white-space: nowrap;
    cursor: pointer;
    text-decoration: none;
}
.btn:focus-visible {
    box-shadow: 0 0 0 2px var(--bg-surface), 0 0 0 4px var(--ring-color);
}
.btn:disabled, .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-primary {
    background-color: var(--color-primary-600);
    color: #fff;
    border-color: var(--color-primary-700);
}
.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-700);
    color: #fff;
}

.btn-secondary, .btn-outline {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-xs);
}
.btn-secondary:hover:not(:disabled),
.btn-outline:hover:not(:disabled) {
    background-color: var(--bg-muted);
    border-color: var(--color-gray-300);
    color: var(--text-primary);
}

.btn-danger {
    background-color: var(--color-danger-600);
    color: #fff;
    border-color: var(--color-danger-700);
}
.btn-danger:hover:not(:disabled) {
    background-color: var(--color-danger-700);
    color: #fff;
}

.btn-success {
    background-color: var(--color-success-600);
    color: #fff;
    border-color: var(--color-success-700);
}
.btn-success:hover:not(:disabled) {
    background-color: var(--color-success-700);
    color: #fff;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
    background: var(--bg-muted);
    color: var(--text-primary);
}

/* Deprecated but keep for back-compat */
.btn-black { background: var(--color-gray-900); color: #fff; border-color: var(--color-gray-900); }
.btn-black:hover:not(:disabled) { background: var(--color-gray-800); color: #fff; }
.btn-enterprise { background: var(--color-gray-900); color: #fff; border-color: var(--color-gray-900); }
.btn-enterprise:hover:not(:disabled) { background: var(--color-gray-800); color: #fff; }

.btn-sm { padding: 4px 10px; font-size: var(--text-xs); }
.btn-lg { padding: 10px 20px; font-size: var(--text-base); }
.btn-icon { padding: 6px; }

.btn-group { display: flex; gap: var(--space-2); }
.btn-group-tight { display: flex; }
.btn-group-tight .btn { border-radius: 0; }
.btn-group-tight .btn:first-child { border-radius: var(--radius-base) 0 0 var(--radius-base); }
.btn-group-tight .btn:last-child { border-radius: 0 var(--radius-base) var(--radius-base) 0; }


/* ==========================================================================
   8. FORM CONTROLS
   ========================================================================== */

.form-group {
    margin-bottom: var(--space-5);
    display: flex;
    flex-direction: column;
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.form-hint {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: 4px;
}

.form-control,
.input-control {
    width: 100%;
    padding: 8px 12px;
    font-size: var(--text-sm);
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
    font-family: inherit;
}
.form-control:focus,
.input-control:focus {
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}
.form-control::placeholder,
.input-control::placeholder { color: var(--text-tertiary); }

.form-control.error,
.input-control.error { border-color: var(--color-danger-500); }
.form-control.error:focus,
.input-control.error:focus { box-shadow: 0 0 0 3px var(--color-danger-100); }

textarea.form-control,
textarea.input-control { min-height: 100px; resize: vertical; }

select.form-control,
select.input-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 01.708 0L8 8.293l2.646-2.647a.5.5 0 01.708.708l-3 3a.5.5 0 01-.708 0l-3-3a.5.5 0 010-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary-600);
    cursor: pointer;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding-top: var(--space-5);
    border-top: 1px solid var(--border-color);
    margin-top: var(--space-6);
}

/* Checkbox grid (used in invite_user, user_edit, etc.) */
.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-2);
}
.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    transition: border-color var(--transition-fast), background var(--transition-fast);
    background: var(--bg-muted);
}
.checkbox-item:hover {
    border-color: var(--color-gray-300);
    background: var(--bg-surface);
}
.checkbox-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary-600);
    cursor: pointer;
    flex-shrink: 0;
}

/* User info cell (users table) */
.user-info { display: flex; flex-direction: column; gap: 2px; }
.user-name  { font-weight: 600; color: var(--text-primary); }
.user-email { font-size: var(--text-xs); color: var(--text-secondary); }


/* ==========================================================================
   9. CARDS & PANELS
   ========================================================================== */

.card, .panel, .admin-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-5);
}

.card-header, .panel-header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}
.card-title {
    font-size: var(--text-base);
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}
.card-body, .panel-body { padding: var(--space-5); }

/* Card layout modifiers */
.card-header-stack {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
}
.card-header-stack .card-header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
}

/* Profile header (user_view.php) */
.profile-header {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-7);
    margin-bottom: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
    border-left: 4px solid var(--color-primary-600);
}
.profile-avatar-lg {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--color-primary-600);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    font-weight: 700;
    flex-shrink: 0;
    overflow: hidden;
}
.profile-avatar-lg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.profile-info { flex: 1; min-width: 0; }
.profile-name {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}
.profile-email {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
}
.profile-meta {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
    align-items: center;
}
.profile-actions { display: flex; gap: var(--space-2); flex-shrink: 0; }

/* Content grid (2/3 + 1/3 columns) */
.content-grid-2-1 {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-6);
    align-items: start;
}
@media (max-width: 1024px) {
    .content-grid-2-1 { grid-template-columns: 1fr; }
}

/* Info key-value grid (label → value) */
.info-kv {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
}
.info-kv-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--text-xs);
    padding-top: 2px;
}
.info-kv-value {
    font-weight: 500;
    color: var(--text-primary);
    word-break: break-word;
}
.info-kv-value.muted {
    color: var(--text-secondary);
    font-style: italic;
    font-weight: 400;
}

/* Certificate list items */
.cert-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--border-color);
}
.cert-item:last-child { border-bottom: none; }
.cert-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--color-warning-100);
    border: 1px solid var(--color-warning-200);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}
.cert-info { flex: 1; min-width: 0; }
.cert-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
    margin-bottom: 2px;
}
.cert-date { font-size: var(--text-xs); color: var(--text-secondary); }

/* Progress stat items */
.progress-stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) var(--space-4);
    background: var(--bg-muted);
    border-radius: var(--radius-base);
    border: 1px solid var(--border-color);
}
.progress-stat-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
}
.progress-stat-value {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
}
.progress-stat-item.success .progress-stat-value { color: var(--color-success-600); }
.progress-stat-item.info    .progress-stat-value { color: var(--color-primary-600); }

/* Action list (admin sidebar actions) */
.action-list { display: flex; flex-direction: column; gap: var(--space-2); }
.action-list-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
    background: var(--bg-surface);
    transition: background var(--transition-fast), border-color var(--transition-fast);
}
.action-list-item:hover {
    background: var(--bg-muted);
    border-color: var(--color-gray-300);
}
.action-list-item.primary {
    background: var(--color-primary-600);
    color: white;
    border-color: var(--color-primary-600);
}
.action-list-item.primary:hover {
    background: var(--color-primary-700);
    border-color: var(--color-primary-700);
}

/* Role item in user view */
.role-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--bg-muted);
}
.role-item-name {
    flex: 1;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.card-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-color);
    background: var(--color-gray-50);
}

/* Interactive cards */
a.card:hover, .card-link:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

/* Course Card variant */
.course-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.course-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-md);
}
.course-card-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: var(--color-gray-100);
    border-bottom: 1px solid var(--border-color);
}
.course-card-content {
    padding: var(--space-4);
    flex: 1;
    display: flex;
    flex-direction: column;
}


/* ==========================================================================
   10. DATA TABLES
   ========================================================================== */

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    text-align: left;
    border-collapse: collapse;
}

thead th {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-color);
    background: var(--color-gray-50);
    white-space: nowrap;
}

tbody td {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
}

tbody tr:last-child td { border-bottom: none; }

tbody tr:hover { background-color: var(--color-gray-50); }

tbody tr.clickable-row {
    cursor: pointer;
    transition: background-color var(--transition-fast);
}
tbody tr.clickable-row:hover { background-color: var(--color-gray-50); }

/* Sortable headers */
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--text-primary); }

/* Table inside cards: no extra spacing */
.card table thead th:first-child,
.card table tbody td:first-child { padding-left: var(--space-5); }
.card table thead th:last-child,
.card table tbody td:last-child { padding-right: var(--space-5); }


/* ==========================================================================
   11. BADGES
   ========================================================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 500;
    border-radius: var(--radius-full);
    line-height: 1.4;
    white-space: nowrap;
}

/* Named variants */
.badge-blue, .badge--primary  { background: var(--color-primary-50); color: var(--color-primary-700); }
.badge-green, .badge--success, .badge-active, .badge-completed { background: var(--color-success-50); color: var(--color-success-700); }
.badge-yellow, .badge--warning, .badge-warning, .badge-invited { background: var(--color-warning-50); color: var(--color-warning-700); }
.badge-red, .badge--danger, .badge-locked, .badge-error, .badge-system { background: var(--color-danger-50); color: var(--color-danger-700); }
.badge-gray, .badge--neutral, .badge-inactive { background: var(--color-gray-100); color: var(--color-gray-600); }
.badge-info { background: var(--color-info-50); color: var(--color-info-700); }


/* ==========================================================================
   12. TABS
   ========================================================================== */

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    gap: 0;
    margin-bottom: var(--space-5);
    overflow-x: auto;
}

.tab {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    cursor: pointer;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}
.tab:hover {
    color: var(--text-primary);
    border-bottom-color: var(--color-gray-300);
}
.tab.active {
    color: var(--color-primary-600);
    border-bottom-color: var(--color-primary-600);
    font-weight: 600;
}

.tab-content { display: none; }
.tab-content.active { display: block; }


/* ==========================================================================
   13. ALERTS & TOASTS
   ========================================================================== */

.alert {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-base);
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    font-size: var(--text-sm);
    line-height: 1.5;
    border: 1px solid transparent;
    margin-bottom: var(--space-5);
}

.alert-success { background: var(--color-success-50); border-color: var(--color-success-100); color: var(--color-success-700); }
.alert-error, .alert-danger { background: var(--color-danger-50); border-color: var(--color-danger-100); color: var(--color-danger-700); }
.alert-warning { background: var(--color-warning-50); border-color: var(--color-warning-100); color: var(--color-warning-700); }
.alert-info { background: var(--color-info-50); border-color: var(--color-info-100); color: var(--color-info-700); }

/* Inline error messages */
.error-text {
    color: var(--color-danger-600);
    font-size: var(--text-xs);
    font-weight: 500;
    margin-top: 4px;
}


/* ==========================================================================
   14. MODALS & DIALOGS
   ========================================================================== */

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    opacity: 0;
    visibility: hidden;
    transition: all 150ms ease;
}
.modal-backdrop.show {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(8px);
    transition: transform 150ms var(--ease-out);
}
.modal-backdrop.show .modal { transform: translateY(0); }

.modal-header {
    padding: var(--space-5) var(--space-5) var(--space-4);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.modal-title { font-size: var(--text-lg); font-weight: 600; margin: 0; }
.modal-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-base);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
}
.modal-close:hover { background: var(--bg-muted); color: var(--text-primary); }

.modal-body { padding: 0 var(--space-5) var(--space-5); }

.modal-footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
}


/* ==========================================================================
   15. PAGINATION
   ========================================================================== */

.pagination {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-top: var(--space-5);
}

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 var(--space-2);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--bg-surface);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}
.page-link:hover { background: var(--bg-muted); color: var(--text-primary); border-color: var(--color-gray-300); }
.page-link.active {
    background: var(--color-primary-600);
    color: #fff;
    border-color: var(--color-primary-600);
}
.page-link:disabled, .page-link.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination-info {
    margin-left: auto;
    font-size: var(--text-xs);
    color: var(--text-secondary);
}


/* ==========================================================================
   16. PROGRESS BARS
   ========================================================================== */

.progress-container, .progress-track {
    width: 100%;
    height: 6px;
    background: var(--color-gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-fill, .progress-fill {
    height: 100%;
    background: var(--color-primary-600);
    border-radius: var(--radius-full);
    transition: width 0.6s var(--ease-out);
}
.progress-bar-fill.success, .progress-fill.success { background: var(--color-success-600); }
.progress-bar-fill.warning, .progress-fill.warning { background: var(--color-warning-500); }
.progress-bar-fill.danger, .progress-fill.danger { background: var(--color-danger-600); }

.progress-label {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: var(--space-1);
}


/* ==========================================================================
   17. METRIC CARDS (DASHBOARD)
   ========================================================================== */

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.metric-card {
    background: var(--bg-surface);
    padding: var(--space-5);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
    transition: border-color var(--transition-fast);
}
.metric-card:hover { border-color: var(--color-gray-300); }

.metric-card::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--color-gray-200);
    transition: background var(--transition-fast);
}
.metric-card:hover::before { background: var(--color-primary-500); }
.metric-card.success::before { background: var(--color-success-500); }
.metric-card.warning::before { background: var(--color-warning-500); }
.metric-card.danger::before { background: var(--color-danger-500); }

.metric-label {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: var(--space-2);
}

.metric-value {
    font-size: var(--text-3xl);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.metric-icon {
    color: var(--text-secondary);
    opacity: 0.2;
}

.metric-foot {
    margin-top: var(--space-3);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

/* Stat Cards (Admin overview stats) */
.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-5) var(--space-6);
    text-align: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.stat-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}
.stat-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}
.stat-value {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}
.stat-sub {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}


/* ==========================================================================
   18. TOOLBAR & SEARCH
   ========================================================================== */

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 1;
    min-width: 0;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.search-input {
    width: 100%;
    max-width: 320px;
    padding: 7px 12px 7px 36px;
    font-size: var(--text-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--bg-surface);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23a1a1aa' viewBox='0 0 24 24'%3E%3Cpath d='M21 21l-5.197-5.197m0 0A7.5 7.5 0 105.196 5.196a7.5 7.5 0 0010.607 10.607z' stroke='%23a1a1aa' stroke-width='2' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 10px center;
    background-size: 16px;
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.search-input:focus {
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.filter-select {
    padding: 7px 32px 7px 12px;
    font-size: var(--text-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-base);
    background: var(--bg-surface);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2371717a' viewBox='0 0 16 16'%3E%3Cpath d='M4.646 5.646a.5.5 0 01.708 0L8 8.293l2.646-2.647a.5.5 0 01.708.708l-3 3a.5.5 0 01-.708 0l-3-3a.5.5 0 010-.708z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    outline: none;
    cursor: pointer;
}


/* ==========================================================================
   19. EMPTY STATES
   ========================================================================== */

.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--space-4);
    opacity: 0.3;
    color: var(--text-tertiary);
}
.empty-state-text {
    font-size: var(--text-base);
    font-weight: 500;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}
.empty-state-sub {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    max-width: 360px;
}


/* ==========================================================================
   20. UTILITIES
   ========================================================================== */

/* Flexbox */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.justify-center { justify-content: center; }

/* Grid */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Gap */
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Spacing */
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mb-6 { margin-bottom: var(--space-6); }
.ml-auto { margin-left: auto; }
.mr-auto { margin-right: auto; }

.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }
.py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }

/* Sizing */
.w-full { width: 100%; }
.h-full { height: 100%; }
.max-w-narrow { max-width: var(--content-narrow); }

/* Border */
.border { border: 1px solid var(--border-color); }
.border-t { border-top: 1px solid var(--border-color); }
.border-b { border-bottom: 1px solid var(--border-color); }
.rounded { border-radius: var(--radius-base); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-full { border-radius: var(--radius-full); }

/* Visibility */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Object fit */
.object-cover { object-fit: cover; }

/* Burger button */
.burger-btn {
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    border-radius: var(--radius-base);
    transition: background var(--transition-fast);
    flex-shrink: 0;
}
.burger-btn:hover { background: var(--bg-muted); }
.burger-btn span {
    display: block;
    width: 18px;
    height: 1.5px;
    background: var(--text-secondary);
    border-radius: 1px;
    transition: all var(--transition-base);
}

/* Dashboard specific utilities */
.dashboard-wrapper {
    padding: var(--space-6);
    max-width: var(--content-max-width);
    margin: 0 auto;
    width: 100%;
}

.dashboard-header {
    margin-bottom: var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--border-color);
}
.dashboard-header h1 {
    font-size: var(--text-2xl);
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}
.dashboard-header p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 400;
    margin: 0;
}

.section-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-4);
}

.action-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-5);
    text-decoration: none;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.action-card:hover {
    border-color: var(--color-primary-400);
    color: var(--text-primary);
}
.action-card strong {
    font-size: var(--text-base);
    font-weight: 600;
}
.action-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    flex-grow: 1;
    margin: 0;
}

.badge-mini {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 600;
    background: var(--color-success-50);
    color: var(--color-success-700);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* Auth Layout */
body.auth-layout {
    background: var(--color-gray-50);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-4);
}

/* Mobile Sidebar Overlay */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}
.sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar { 
        transform: translateX(-100%); 
        width: 280px !important;
        box-shadow: var(--shadow-xl);
    }
    .sidebar.mobile-open { transform: translateX(0); }
    .main-view { margin-left: 0 !important; }
    .main-view.expanded { margin-left: 0 !important; }
    .content-area { padding: var(--space-4); }
    .page-header { padding: var(--space-4) var(--space-4) 0; }
    .form-row { grid-template-columns: 1fr; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .toolbar { flex-direction: column; align-items: stretch; }
    .toolbar-left, .toolbar-right { width: 100%; }
    .search-input { max-width: 100%; }
    .learner-nav-links { display: none; }
    .dashboard-header { flex-direction: column; align-items: flex-start; gap: var(--space-3); }
}


/* ==========================================================================
   21. MARKETING / LANDING PAGE
   ========================================================================== */

.landing-root {
    min-height: 100vh;
    background: var(--bg-app);
    display: flex;
    flex-direction: column;
}

.landing-navbar {
    background: #18443d;
    color: #ffffff;
    height: 60px;
    display: flex;
    align-items: center;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

.landing-navbar-inner {
    max-width: 1120px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
}

.landing-navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: inherit;
}

.landing-navbar-brand img {
    height: 26px;
    width: auto;
}

.landing-navbar-brand-text {
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-size: var(--text-xs);
}

.landing-navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-5);
    flex: 1;
    justify-content: flex-end;
}

.landing-navbar-link {
    position: relative;
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.86);
    text-decoration: none;
    padding-bottom: 4px;
}

.landing-navbar-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: #ffffff;
    transition: width var(--transition-base);
}

.landing-navbar-link:hover {
    color: #ffffff;
}

.landing-navbar-link:hover::after {
    width: 18px;
}

.landing-navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-left: var(--space-4);
}

.landing-shell {
    max-width: 1120px;
    margin: 0 auto;
    width: 100%;
    padding: var(--space-4) var(--space-6) var(--space-10);
}

.landing-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.landing-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.landing-brand img {
    height: 28px;
    width: auto;
}

.landing-brand-text {
    font-weight: 700;
    font-size: var(--text-lg);
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.landing-login-cta {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.landing-login-cta span {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.landing-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: var(--space-10);
    align-items: center;
}

.landing-main {
    padding-top: var(--space-8);
}

.landing-eyebrow {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--color-primary-600);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.landing-title {
    font-size: 2.4rem;
    line-height: 1.15;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: var(--space-3);
}

.landing-subtitle {
    font-size: var(--text-md);
    color: var(--text-secondary);
    max-width: 34rem;
    margin-bottom: var(--space-5);
}

.landing-primary-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    margin-bottom: var(--space-4);
}

.landing-secondary-note {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.landing-bullets {
    margin-top: var(--space-5);
    list-style: none;
    padding-left: 0;
    display: grid;
    gap: var(--space-2);
    max-width: 32rem;
}

.landing-bullets li {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: var(--space-2);
}

.landing-bullets li::before {
    content: "";
    width: 6px;
    height: 6px;
    border-radius: 999px;
    margin-top: 7px;
    background: var(--color-primary-500);
}

.landing-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.landing-meta-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.landing-meta-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--text-tertiary);
}

.landing-meta-value {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.landing-panel {
    background: rgba(255, 255, 255, 0.92);
    border-radius: 20px;
    border: 1px solid rgba(15, 23, 42, 0.06);
    box-shadow: var(--shadow-xl);
    padding: var(--space-5);
    position: relative;
    overflow: hidden;
}

.landing-panel-badge {
    position: absolute;
    top: 18px;
    right: 18px;
    padding: 3px 10px;
    border-radius: 999px;
    background: var(--color-gray-900);
    color: #f9fafb;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 600;
}

.landing-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.landing-panel-title {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.landing-panel-caption {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.landing-panel-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.landing-panel-metric-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.landing-panel-metric-value {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
}

.landing-panel-footnote {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.landing-trust {
    margin-top: var(--space-10);
    border-top: 1px solid var(--border-color);
    padding-top: var(--space-5);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-4);
    justify-content: space-between;
}

.landing-trust-label {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--text-tertiary);
}

.landing-trust-logos {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
}

.landing-trust-pseudo-logo {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    padding: 2px 10px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-subtle);
    background: rgba(255, 255, 255, 0.9);
}

.landing-section-area {
    margin-top: var(--space-10);
}

.landing-section-header {
    max-width: 640px;
    margin-bottom: var(--space-6);
}

.landing-section-title {
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-2);
}

.landing-section-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.7;
}

.landing-section-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
}

.landing-section-card {
    background: rgba(255, 255, 255, 0.96);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(15, 23, 42, 0.06);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
}

.landing-section-card h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.landing-section-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.landing-navbar-contact {
    padding: 6px 16px;
    border-radius: var(--radius-base);
    border: 1px solid rgba(255, 255, 255, 0.9);
    color: #ffffff;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    background: transparent;
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.landing-navbar-contact:hover {
    background: #ffffff;
    color: #18443d;
    border-color: #ffffff;
}

.landing-navbar-login {
    padding: 6px 16px;
    border-radius: var(--radius-base);
    background: #ffffff;
    color: #18443d;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.landing-navbar-login:hover {
    background: #e5f5f1;
    color: #12342f;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}

@media (max-width: 960px) {
    .landing-shell {
        padding-inline: var(--space-4);
    }

    .landing-hero {
        grid-template-columns: minmax(0, 1fr);
        gap: var(--space-6);
    }

    .landing-header {
        margin-bottom: var(--space-6);
    }
}

@media (max-width: 640px) {
    .landing-shell {
        padding-inline: var(--space-3);
    }

    .landing-header {
        flex-direction: row;
        align-items: center;
    }

    .landing-title {
        font-size: 1.85rem;
    }

    .landing-login-cta span {
        display: none;
    }

    .landing-trust {
        flex-direction: column;
        align-items: flex-start;
    }
}


/* ==========================================================================
   21. GAMIFICATION COMPONENTS
   ========================================================================== */

/* ── Badge Preview Card (Badge Editor) ───────────────────────────────────── */
.badge-preview-card {
    text-align: center;
    padding: var(--space-8) var(--space-6);
    background: linear-gradient(135deg, var(--bg-surface) 0%, var(--color-gray-50) 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
}
.badge-preview-visual {
    width: 96px; height: 96px;
    margin: 0 auto var(--space-4);
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    border: 3px solid var(--border-color);
    background: var(--bg-surface);
    box-shadow: var(--shadow-md);
    transition: border-color 0.3s;
}
.badge-preview-visual img { width: 64px; height: 64px; object-fit: contain; }
.badge-preview-visual .emoji { font-size: 48px; line-height: 1; }

/* ── Badge Image Upload (Badge Editor) ───────────────────────────────────── */
.badge-image-upload {
    display: block;
    width: 100%;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
}
.badge-image-upload:hover {
    border-color: var(--color-primary-400);
    background: var(--color-primary-50);
}
.badge-image-upload input[type="file"] { display: none; }
.badge-image-current {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-3);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
}
.badge-image-current img {
    width: 48px; height: 48px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* ── View-Only Notice ────────────────────────────────────────────────────── */
.view-only-notice {
    display: flex; align-items: center; gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-info-50, #EFF6FF);
    border: 1px solid var(--color-info-200, #BFDBFE);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-5);
    color: var(--color-info-700, #1D4ED8);
    font-size: var(--text-sm);
}

/* ── Earned Stat Pill ────────────────────────────────────────────────────── */
.earned-stat {
    display: inline-flex; align-items: center; gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-gray-50);
    border-radius: 100px;
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-2);
}

/* ── Gamification Section Labels ─────────────────────────────────────────── */
.gam-section-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
}

/* ── Gamification XP Row (User View) ─────────────────────────────────────── */
.gam-xp-row {
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border-color);
}
.gam-xp-row:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}
.gam-xp-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

/* ── Gamification Badge Pill ─────────────────────────────────────────────── */
.gam-badge-pill {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 4px 10px;
    background: var(--color-gray-50);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 12px;
    transition: background 0.15s;
}
.gam-badge-pill:hover {
    background: var(--color-gray-100);
}
.gam-badge-pill img {
    width: 16px; height: 16px; object-fit: contain;
}
.gam-badge-pill .gam-badge-pill-emoji {
    font-size: 14px;
}

/* ── Gamification Streak ─────────────────────────────────────────────────── */
.gam-streak-row {
    display: flex; align-items: center; gap: 6px;
    margin-top: var(--space-3);
}
.gam-streak-icon { font-size: 16px; }
.gam-streak-text {
    font-size: var(--text-sm); font-weight: 600;
    color: var(--text-primary);
}
.gam-streak-label {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

/* ── Level Badge Component ───────────────────────────────────────────────── */
.level-badge {
    display: inline-flex; align-items: center; justify-content: center;
    position: relative;
}
.level-badge-image {
    border-radius: var(--radius-md);
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.15));
}
.level-badge-fallback {
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    font-weight: 800;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.3);
    box-shadow: var(--shadow-sm);
}
.level-badge-fallback--bronze   { background: linear-gradient(135deg, #CD7F32, #A0522D); }
.level-badge-fallback--silver   { background: linear-gradient(135deg, #C0C0C0, #808080); }
.level-badge-fallback--gold     { background: linear-gradient(135deg, #FFD700, #DAA520); }
.level-badge-fallback--platinum { background: linear-gradient(135deg, #E5E4E2, #A0B2C6); }
.level-badge-fallback--elite    { background: linear-gradient(135deg, #FF4500, #8B0000); }

/* Size variants */
.level-badge--sm .level-badge-image  { width: 28px; height: 28px; }
.level-badge--sm .level-badge-fallback { width: 28px; height: 28px; font-size: 12px; }
.level-badge--md .level-badge-image  { width: 48px; height: 48px; }
.level-badge--md .level-badge-fallback { width: 48px; height: 48px; font-size: 18px; }
.level-badge--lg .level-badge-image  { width: 72px; height: 72px; }
.level-badge--lg .level-badge-fallback { width: 72px; height: 72px; font-size: 28px; }
.level-badge--xl .level-badge-image  { width: 96px; height: 96px; }
.level-badge--xl .level-badge-fallback { width: 96px; height: 96px; font-size: 36px; }

/* ── Level Card Grid (Admin Level Management) ────────────────────────────── */
.level-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-4);
}
.level-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    text-align: center;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
    cursor: pointer;
}
.level-card:hover {
    border-color: var(--color-primary-400);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.level-card-number {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
}
.level-card-image {
    width: 64px; height: 64px;
    margin: 0 auto var(--space-3);
    display: flex; align-items: center; justify-content: center;
}
.level-card-image img {
    width: 60px; height: 60px;
    object-fit: contain;
    border-radius: var(--radius-md);
}
.level-card-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}
.level-card-xp {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}
.level-card-tier {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 100px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: var(--space-2);
}
.level-card-tier--bronze   { background: #CD7F3222; color: #92400E; }
.level-card-tier--silver   { background: #C0C0C022; color: #4B5563; }
.level-card-tier--gold     { background: #FFD70022; color: #92400E; }
.level-card-tier--platinum { background: #E5E4E222; color: #4B5563; }
.level-card-tier--elite    { background: #FF450022; color: #DC2626; }

/* ── Radar Chart (Category Skill Visualization) ──────────────────────────── */
.radar-chart-wrap {
    display: flex; align-items: center; justify-content: center;
    padding: var(--space-3) 0;
}
.radar-chart {
    position: relative;
    width: 100%;
    max-width: 380px;
    aspect-ratio: 1 / 1;
}
.radar-chart svg {
    width: 100%; height: 100%; display: block; overflow: visible;
}

/* ── Gamification Profile Section ────────────────────────────────────────── */
.gam-profile-summary {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--space-5);
    align-items: center;
    margin-bottom: var(--space-6);
}
.gam-profile-level {
    display: flex; flex-direction: column;
    align-items: center; gap: var(--space-2);
}
.gam-profile-level-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}
.gam-profile-level-tier {
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}
.gam-profile-stats {
    display: flex; flex-direction: column; gap: var(--space-3);
}
.gam-profile-xp-bar {
    width: 100%;
}
.gam-profile-xp-labels {
    display: flex;
    justify-content: space-between;
    font-size: var(--text-xs);
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
}
.gam-profile-xp-values {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-top: var(--space-1);
    text-align: center;
    font-variant-numeric: tabular-nums;
}

/* ── Badge Grid (Profile) ────────────────────────────────────────────────── */
.badge-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-3);
}
.badge-grid-item {
    display: flex; flex-direction: column;
    align-items: center; padding: var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    text-align: center;
    transition: transform 0.15s, box-shadow 0.15s;
}
.badge-grid-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.badge-grid-item--locked {
    opacity: 0.45;
    filter: grayscale(0.8);
}
.badge-grid-item--locked:hover {
    opacity: 0.6;
    filter: grayscale(0.4);
}
.badge-grid-icon {
    width: 56px; height: 56px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: var(--space-2);
}
.badge-grid-icon img {
    width: 48px; height: 48px;
    object-fit: contain;
}
.badge-grid-icon .badge-grid-emoji {
    font-size: 36px; line-height: 1;
}
.badge-grid-name {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 2px;
}
.badge-grid-date {
    font-size: 10px;
    color: var(--text-secondary);
}
.badge-grid-hint {
    font-size: 10px;
    color: var(--text-secondary);
    margin-top: var(--space-1);
}

/* ── Gamification Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
    .gam-profile-summary {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .radar-chart {
        max-width: 260px;
    }
    .badge-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    }
    .level-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }
}


/* ==========================================================================
   21. SEVERITY SYSTEM
   Canonical severity indicators for audit, security, and compliance views.
   Usage: .badge-critical, .badge-high, .badge-medium, .badge-low
          .sev-critical (on <tr>) adds colored left stripe via ::before
   ========================================================================== */

/* Severity badges (inline indicators with dot) */
.badge-critical {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px; border-radius: var(--radius-full);
    font-size: 11px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.03em;
    background: var(--color-danger-50); color: var(--color-danger-700);
}
.badge-high {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px; border-radius: var(--radius-full);
    font-size: 11px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.03em;
    background: #fff7ed; color: #c2410c;
}
.badge-medium {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px; border-radius: var(--radius-full);
    font-size: 11px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.03em;
    background: var(--color-warning-50); color: var(--color-warning-700);
}
.badge-low {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 8px; border-radius: var(--radius-full);
    font-size: 11px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.03em;
    background: var(--color-gray-100); color: var(--color-gray-600);
}

/* Severity dot (6px circle inside badges) */
.sev-dot {
    width: 6px; height: 6px; border-radius: 50%; display: inline-block; flex-shrink: 0;
}
.badge-critical .sev-dot { background: var(--color-danger-500); }
.badge-high    .sev-dot { background: #f97316; }
.badge-medium  .sev-dot { background: var(--color-warning-500); }
.badge-low     .sev-dot { background: var(--color-gray-400); }

/* Severity stripe on table rows (4px left border via ::before) */
.table-severity tbody tr[class*="sev-"] { position: relative; }
.table-severity tbody tr[class*="sev-"] > td:first-child {
    padding: 0; width: 4px; min-width: 4px; max-width: 4px;
    border-right: none;
}
.table-severity tbody tr.sev-critical > td:first-child { background: var(--color-danger-500); }
.table-severity tbody tr.sev-high     > td:first-child { background: #f97316; }
.table-severity tbody tr.sev-medium   > td:first-child { background: var(--color-warning-500); }
.table-severity tbody tr.sev-low      > td:first-child { background: var(--color-gray-300); }
.table-severity tbody tr.sev-info     > td:first-child { background: var(--color-gray-200); }
.table-severity thead th:first-child { padding: 0; width: 4px; min-width: 4px; max-width: 4px; }


/* ==========================================================================
   22. EXPANDABLE TABLE ROWS
   Table rows that reveal a detail panel below on click/toggle.
   Usage: tr.expandable-row + tr.detail-row
   ========================================================================== */

/* Expandable row click target */
.table-expandable tbody tr.expandable-row {
    cursor: pointer;
    transition: background var(--transition-fast);
}
.table-expandable tbody tr.expandable-row:hover { background: var(--color-gray-50); }
.table-expandable tbody tr.expandable-row.expanded { background: var(--color-gray-50); }

/* Detail row (hidden by default) */
.table-expandable tbody tr.detail-row { display: none; }
.table-expandable tbody tr.detail-row.visible { display: table-row; }
.table-expandable tbody tr.detail-row > td {
    padding: 0;
    border-bottom: 1px solid var(--border-color);
    background: var(--color-gray-50);
}

/* Expand/collapse button */
.expand-btn {
    background: none; border: none; cursor: pointer;
    color: var(--text-secondary); padding: 4px 6px; border-radius: var(--radius-base);
    transition: background var(--transition-fast), color var(--transition-fast);
    display: inline-flex; align-items: center; justify-content: center;
}
.expand-btn:hover { background: var(--bg-muted); color: var(--text-primary); }
.expand-btn.expanded { color: var(--color-primary-600); }
.expand-btn svg { transition: transform .15s ease; }
.expand-btn.expanded svg { transform: rotate(180deg); }

/* Detail panel inner layout */
.detail-panel {
    padding: var(--space-4) var(--space-5);
    display: flex; gap: var(--space-5);
    flex-wrap: wrap;
    border-top: 1px solid var(--border-color);
}
.detail-panel-meta {
    flex: 0 0 260px;
    min-width: 200px;
}


/* ==========================================================================
   23. INLINE DIFF
   Per-field change display: field: old → new
   Usage: .inline-diff > .diff-entry > .diff-field + .diff-old + .diff-arrow + .diff-new
   ========================================================================== */

.inline-diff {
    flex: 1;
    min-width: 0;
}
.inline-diff-header {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--border-color);
}
.diff-entry {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    padding: 3px 0;
    font-size: var(--text-sm);
    line-height: 1.4;
}
.diff-entry + .diff-entry {
    border-top: 1px solid var(--border-subtle);
}
.diff-field {
    flex: 0 0 auto;
    min-width: 80px;
    max-width: 160px;
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
    word-break: break-word;
}
.diff-old {
    color: var(--color-danger-600);
    font-family: 'SF Mono', 'Roboto Mono', ui-monospace, monospace;
    font-size: 12px;
    word-break: break-all;
    text-decoration: line-through;
    opacity: 0.75;
}
.diff-arrow {
    color: var(--text-tertiary);
    font-size: var(--text-sm);
    flex-shrink: 0;
    padding: 0 2px;
}
.diff-new {
    color: var(--color-success-700);
    font-family: 'SF Mono', 'Roboto Mono', ui-monospace, monospace;
    font-size: 12px;
    word-break: break-all;
    font-weight: 500;
}
/* Create indicator (no old value) */
.diff-entry.created .diff-new { color: var(--color-success-700); }
.diff-entry.created .diff-field::after {
    content: '+'; margin-left: 4px;
    color: var(--color-success-500); font-weight: 700;
}
/* Delete indicator (no new value) */
.diff-entry.deleted .diff-old { color: var(--color-danger-600); text-decoration: line-through; }
.diff-entry.deleted .diff-field::after {
    content: '−'; margin-left: 4px;
    color: var(--color-danger-500); font-weight: 700;
}

/* Legacy fallback: side-by-side JSON blocks */
.diff-legacy {
    display: flex; gap: var(--space-3); flex-wrap: wrap; flex: 1; min-width: 0;
}
.diff-legacy-col { flex: 1; min-width: 160px; }
.diff-legacy-head {
    font-size: var(--text-xs); font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.04em; color: var(--text-secondary);
    margin-bottom: var(--space-2); padding-bottom: var(--space-1);
    border-bottom: 1px solid var(--border-color);
}
.diff-legacy-col.old .diff-legacy-head { color: var(--color-danger-600); border-color: var(--color-danger-100); }
.diff-legacy-col.new .diff-legacy-head { color: var(--color-success-700); border-color: var(--color-success-100); }
.diff-legacy-row {
    display: grid; grid-template-columns: 80px 1fr; gap: 4px 6px;
    margin-bottom: 4px; font-size: 11px; align-items: baseline;
}
.diff-legacy-key {
    font-size: var(--text-xs); font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.03em; color: var(--text-secondary);
}
.diff-legacy-val {
    color: var(--text-primary); word-break: break-all;
    font-family: 'SF Mono', 'Roboto Mono', ui-monospace, monospace;
    font-size: 11px;
}
.diff-legacy-col.old .diff-legacy-val { color: var(--color-danger-600); }
.diff-legacy-col.new .diff-legacy-val { color: var(--color-success-700); }


/* ==========================================================================
   24. RESULT BAR & FILTER CHIPS
   Info bar showing result count, per-page selector, and active filter chips.
   ========================================================================== */

/* Result bar (between filter and table) */
.result-bar {
    display: flex;
    align-items: center;
    padding: var(--space-2) var(--space-5);
    gap: var(--space-3);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}
.result-bar strong { color: var(--text-primary); }
.result-bar-right { margin-left: auto; display: flex; align-items: center; gap: var(--space-2); }

/* Per-page selector */
.per-page-label { font-size: 11px; color: var(--text-secondary); }
.per-page-link {
    font-size: var(--text-xs); font-weight: 600; color: var(--text-secondary);
    text-decoration: none; padding: 2px 6px; border-radius: var(--radius-base);
    transition: background var(--transition-fast);
}
.per-page-link:hover { background: var(--bg-muted); color: var(--text-primary); }
.per-page-link.active { color: var(--color-primary-600); background: var(--color-primary-50); }

/* Filter chips */
.filter-chip-bar {
    padding: var(--space-2) var(--space-5);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-surface);
    display: flex; align-items: center; gap: var(--space-2);
}
.filter-chip-label {
    font-size: 11px; color: var(--text-secondary);
}
.filter-chip {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 10px; border-radius: var(--radius-full);
    font-size: 11px; font-weight: 500;
    background: var(--color-primary-50);
    color: var(--color-primary-700);
    border: 1px solid var(--color-primary-200);
}
.filter-chip a {
    color: inherit; text-decoration: none; opacity: 0.6;
    margin-left: 2px; display: flex; align-items: center;
}
.filter-chip a:hover { opacity: 1; }

/* Tab count badge */
.tab-badge {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 18px; height: 18px;
    padding: 0 5px; border-radius: var(--radius-full);
    font-size: 10px; font-weight: 700;
    background: var(--bg-muted); color: var(--text-secondary);
    margin-left: var(--space-1);
}
.tab.active .tab-badge {
    background: var(--color-primary-100); color: var(--color-primary-700);
}
.tab-badge.alert {
    background: var(--color-danger-50); color: var(--color-danger-600);
}

/* Status indicators */
.status-open {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11px; font-weight: 600; color: var(--color-danger-600);
}
.status-resolved {
    display: inline-flex; align-items: center; gap: 4px;
    font-size: 11px; font-weight: 500; color: var(--color-success-600);
}

/* Resolve action button */
.resolve-btn {
    font-size: 11px; font-weight: 600; border: none; cursor: pointer;
    padding: 3px 10px; border-radius: var(--radius-base); font-family: inherit;
    transition: background var(--transition-fast);
}
.resolve-btn.open {
    background: var(--color-danger-50); color: var(--color-danger-700);
}
.resolve-btn.open:hover { background: var(--color-danger-100); }
.resolve-btn.resolved {
    background: var(--color-success-50); color: var(--color-success-700);
}
.resolve-btn.resolved:hover { background: var(--color-success-100); }


/* ==========================================================================
   25. MONOSPACE & AUDIT-SPECIFIC UTILITIES
   ========================================================================== */

.font-mono {
    font-family: 'SF Mono', 'Roboto Mono', ui-monospace, monospace;
}
.font-mono-sm {
    font-family: 'SF Mono', 'Roboto Mono', ui-monospace, monospace;
    font-size: 11px;
}

/* Audit timestamp cell */
.ts-cell { white-space: nowrap; }
.ts-relative {
    font-size: var(--text-sm); color: var(--text-primary); font-weight: 500;
}
.ts-absolute {
    font-size: 11px; color: var(--text-secondary);
    margin-top: 2px; font-variant-numeric: tabular-nums;
}

/* Actor cell */
.actor-name { font-size: var(--text-sm); font-weight: 500; color: var(--text-primary); }
.actor-email { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }
.actor-ip { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }
.actor-name.system { color: var(--text-secondary); font-style: italic; }
.actor-filter-link { color: inherit; text-decoration: none; }
.actor-filter-link:hover .actor-name {
    color: var(--color-primary-600); text-decoration: underline;
}

/* Event cell */
.event-label { font-size: var(--text-sm); font-weight: 500; color: var(--text-primary); }
.event-raw { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }

/* Entity target cell */
.entity-type {
    display: inline-block;
    padding: 1px 6px; border-radius: 3px;
    font-size: 10px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.03em;
    background: var(--bg-muted); color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.entity-id {
    font-size: 11px; color: var(--text-secondary); margin-top: 3px;
    overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 160px;
}

/* No-expand utility: clicks inside this class do not trigger row expansion */
.no-expand { pointer-events: auto; /* JS marker class — clicks inside do not trigger row expansion */ }

/* Pagination wrapper */
.pagination-wrap {
    display: flex; align-items: center; justify-content: space-between;
    padding: var(--space-3) var(--space-5);
    border-top: 1px solid var(--border-color);
    background: var(--bg-surface);
}
.pagination-status {
    font-size: 11px; color: var(--text-secondary);
}


/* ==========================================================================
   26. AVATAR (COMPACT)
   ========================================================================== */

.avatar-sm {
    width: 30px; height: 30px; border-radius: 50%;
    background: var(--bg-muted); border: 1px solid var(--border-color);
    display: flex; align-items: center; justify-content: center;
    font-size: 10px; font-weight: 700; color: var(--text-secondary);
    letter-spacing: 0.03em; flex-shrink: 0; text-transform: uppercase;
}


/* ==========================================================================
   27. PHISHING MODULE SUB-SIDEBAR
   Integrated secondary navigation for the Phishing Simulation module.
   Lives inside the main-view, alongside the content-area.
   ========================================================================== */

/* Container: wraps sub-sidebar + content side by side */
.ps-layout {
    display: flex;
    min-height: calc(100vh - var(--header-height, 56px));
}

.ps-subnav {
    width: 220px;
    min-width: 220px;
    background: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    padding: var(--space-4) 0;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.ps-subnav-header {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4) var(--space-4);
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-2);
}
.ps-subnav-header svg {
    color: var(--color-primary-500);
    flex-shrink: 0;
}

.ps-subnav-menu {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--space-2) var(--space-3);
}

.ps-subnav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px 12px;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.15s ease;
    border-left: 3px solid transparent;
}
.ps-subnav-item svg {
    flex-shrink: 0;
    opacity: 0.6;
    transition: opacity 0.15s ease;
}
.ps-subnav-item:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}
.ps-subnav-item:hover svg {
    opacity: 1;
}
.ps-subnav-item.active {
    background: rgba(13, 148, 136, 0.06);
    color: var(--color-primary-600);
    font-weight: 600;
    border-left-color: var(--color-primary-500);
}
.ps-subnav-item.active svg {
    opacity: 1;
    color: var(--color-primary-500);
}

/* Content within the ps-layout inherits content-area styling */
.ps-content {
    flex: 1;
    min-width: 0;
    padding: var(--space-6);
    max-width: var(--content-max-width);
    width: 100%;
}

/* Responsive: collapse sub-sidebar below 900px */
@media (max-width: 900px) {
    .ps-layout {
        flex-direction: column;
    }
    .ps-subnav {
        width: 100%;
        min-width: 100%;
        flex-direction: row;
        border-right: 0;
        border-bottom: 1px solid var(--border-color);
        padding: 0;
        overflow-x: auto;
    }
    .ps-subnav-header {
        display: none;
    }
    .ps-subnav-menu {
        flex-direction: row;
        gap: 0;
        padding: 0 var(--space-3);
    }
    .ps-subnav-item {
        border-left: 0;
        border-bottom: 3px solid transparent;
        border-radius: 0;
        white-space: nowrap;
        padding: 12px 16px;
    }
    .ps-subnav-item.active {
        border-bottom-color: var(--color-primary-500);
        border-left-color: transparent;
    }
    .ps-subnav-footer { display: none; }
    .ps-count { display: none; }
}

/* Subnav label + count layout */
.ps-subnav-label {
    flex: 1;
    min-width: 0;
}

.ps-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    line-height: 1;
    background: var(--bg-muted);
    color: var(--text-secondary);
}
.ps-count-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success-600);
}

/* Footer with help link */
.ps-subnav-footer {
    margin-top: auto;
    padding: var(--space-3);
    border-top: 1px solid var(--border-color);
}
.ps-subnav-help {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    font-size: var(--text-xs);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.15s ease;
}
.ps-subnav-help:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}