/* ==============================================================================
   Build Bright University (BBU) — Official Astra-Inspired Enterprise Stylesheet
   Design System: Clean, airy, modern, generous whitespace, soft layered shadows,
   rounded corners, confident typography, navy + warm gold accent.
   ============================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Kantumruy+Pro:wght@300;400;500;600;700&display=swap');

/* ------------------------------------------------------------------------------
   1. Design Tokens (:root)
   ------------------------------------------------------------------------------ */
:root,
[data-bs-theme="light"] {
    /* BBU Brand Identity — Premium Royal Navy & Azurite Blue */
    --bbu-navy: #0a1830;
    --bbu-navy-2: #12294a;
    --bbu-primary: #2d5cf6;
    --bbu-primary-dark: #1d3fd0;
    --bbu-primary-soft: #e9efff;
    --bbu-primary-tint: #f4f7ff;
    --bbu-gold: #f59e0b;
    --bbu-gold-soft: #fff4dc;
    --bbu-gold-dark: #b45309;
    --bbu-gold-bright: #fbbf24;

    /* Signature Gradients */
    --grad-primary: linear-gradient(135deg, #3b82f6 0%, #2d5cf6 48%, #1d3fd0 100%);
    --grad-gold: linear-gradient(135deg, #fcd34d 0%, #f59e0b 60%, #d97706 100%);
    --grad-navy: linear-gradient(135deg, #0a1830 0%, #12294a 52%, #1d3fd0 100%);
    --grad-ink: linear-gradient(135deg, #0a1830 0%, #14315e 55%, #1e40af 100%);

    /* Neutrals & Surfaces (High-Contrast, Crisp, Clean) */
    --bbu-bg: #f4f7fc;
    --bbu-surface: #ffffff;
    --bbu-surface-subtle: #f0f4fa;
    --bbu-border: #e3e9f2;
    --bbu-text: #0d1526;
    --bbu-muted: #4a5a72;
    --bbu-secondary: #334155;
    --bbu-subtle: #64748b;

    /* Soft Semantic Pairs (text / background) */
    --bbu-success: #128a4d;
    --bbu-success-soft: #e6f7ee;
    --bbu-warning: #b45309;
    --bbu-warning-soft: #fff4dc;
    --bbu-danger: #dc2626;
    --bbu-danger-soft: #fdecec;
    --bbu-info: #0369a1;
    --bbu-info-soft: #e6f4fb;

    /* Border Radii */
    --radius-card: 16px;
    --radius-input: 11px;
    --radius-pill: 999px;
    --radius-sm: 8px;

    /* Soft Layered Shadows (Premium Depth) */
    --shadow-sm: 0 1px 2px rgba(13, 21, 38, 0.04), 0 8px 22px -6px rgba(13, 21, 38, 0.09);
    --shadow-hover: 0 18px 44px -12px rgba(13, 21, 38, 0.2);
    --shadow-card: 0 1px 3px rgba(13, 21, 38, 0.03), 0 10px 28px -10px rgba(13, 21, 38, 0.08);
    --shadow-focus: 0 0 0 3.5px rgba(45, 92, 246, 0.18);
    --shadow-glow-primary: 0 10px 30px -8px rgba(45, 92, 246, 0.5);
    --shadow-glow-gold: 0 10px 30px -8px rgba(245, 158, 11, 0.5);

    /* Typography */
    --font-sans: 'Inter', 'Kantumruy Pro', system-ui, -apple-system, sans-serif;
    --font-khmer: 'Kantumruy Pro', 'Inter', sans-serif;

    /* Bootstrap 5 Native Theme Integration (Light Mode) */
    --bs-body-color: var(--bbu-text);
    --bs-body-color-rgb: 15, 23, 42;
    --bs-body-bg: var(--bbu-bg);
    --bs-body-bg-rgb: 246, 248, 252;
    --bs-emphasis-color: var(--bbu-navy);
    --bs-secondary-color: var(--bbu-muted);
    --bs-tertiary-color: var(--bbu-subtle);
    --bs-border-color: var(--bbu-border);
    --bs-card-bg: var(--bbu-surface);
    --bs-card-color: var(--bbu-text);
    --bs-card-border-color: var(--bbu-border);
    --bs-dark: var(--bbu-navy);
    --bs-dark-rgb: 11, 30, 54;
}

/* ------------------------------------------------------------------------------
   2. Dark Mode Tokens ([data-bs-theme="dark"]) — Deep Midnight Navy & Slate Palette
   ------------------------------------------------------------------------------ */
[data-bs-theme="dark"] {
    color-scheme: dark;

    /* Brand Accents on Dark */
    --bbu-navy: #0d1526;
    --bbu-navy-2: #17253f;
    --bbu-primary: #3b82f6;
    --bbu-primary-dark: #60a5fa;
    --bbu-primary-soft: rgba(59, 130, 246, 0.16);
    --bbu-primary-tint: rgba(59, 130, 246, 0.08);
    --bbu-gold: #fbbf24;
    --bbu-gold-soft: rgba(251, 191, 36, 0.16);
    --bbu-gold-dark: #f59e0b;
    --bbu-gold-bright: #fcd34d;

    /* Signature Gradients on Dark */
    --grad-primary: linear-gradient(135deg, #60a5fa 0%, #3b82f6 52%, #2563eb 100%);
    --grad-gold: linear-gradient(135deg, #fcd34d 0%, #fbbf24 60%, #f59e0b 100%);
    --grad-navy: linear-gradient(135deg, #0b1329 0%, #131c38 52%, #1e3a8a 100%);
    --grad-ink: linear-gradient(135deg, #0b1329 0%, #14224a 55%, #1e3a8a 100%);

    /* Deep Midnight Navy & Slate Canvas & Surfaces */
    --bbu-bg: #0a0e18;              /* Velvety deep midnight blue-black canvas */
    --bbu-surface: #101827;         /* Elevated slate-900 surface for cards & dialogs */
    --bbu-surface-subtle: #16203a;  /* Elevated midnight-slate for sub-panels & table headers */
    --bbu-border: rgba(148, 163, 184, 0.15); /* Crisp luminous hairline border */
    --bbu-text: #f8fafc;            /* Crystal ice-white primary text */
    --bbu-muted: #94a3b8;           /* Slate-400 clear secondary text */
    --bbu-secondary: #cbd5e1;       /* Slate-300 secondary text */
    --bbu-subtle: #64748b;          /* Slate-500 tertiary notes */

    /* Refined Modern Semantic Accents */
    --bbu-success: #10b981;
    --bbu-success-soft: rgba(16, 185, 129, 0.14);
    --bbu-warning: #fbbf24;
    --bbu-warning-soft: rgba(251, 191, 36, 0.14);
    --bbu-danger: #f87171;
    --bbu-danger-soft: rgba(248, 113, 113, 0.14);
    --bbu-info: #38bdf8;
    --bbu-info-soft: rgba(56, 189, 248, 0.14);

    /* Deep Layered Ambient Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 6px 18px rgba(0, 0, 0, 0.32);
    --shadow-hover: 0 18px 44px -10px rgba(0, 0, 0, 0.7);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.35), 0 8px 22px rgba(0, 0, 0, 0.36);
    --shadow-focus: 0 0 0 3.5px rgba(59, 130, 246, 0.28);
    --shadow-glow-primary: 0 10px 32px -8px rgba(59, 130, 246, 0.55);
    --shadow-glow-gold: 0 10px 32px -8px rgba(251, 191, 36, 0.45);

    /* Bootstrap 5 Native Theme Integration (Dark Mode) */
    --bs-body-color: var(--bbu-text);
    --bs-body-color-rgb: 248, 250, 252;
    --bs-body-bg: var(--bbu-bg);
    --bs-body-bg-rgb: 11, 15, 25;
    --bs-emphasis-color: #ffffff;
    --bs-secondary-color: var(--bbu-muted);
    --bs-tertiary-color: var(--bbu-subtle);
    --bs-border-color: var(--bbu-border);
    --bs-card-bg: var(--bbu-surface);
    --bs-card-color: var(--bbu-text);
    --bs-card-border-color: var(--bbu-border);
    --bs-dark: var(--bbu-text);
    --bs-dark-rgb: 248, 250, 252;
}

/* Deep Midnight Scrollbars in Dark Mode */
[data-bs-theme="dark"] ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
[data-bs-theme="dark"] ::-webkit-scrollbar-track {
    background: #0a0e18;
}
[data-bs-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #1e293b;
    border-radius: 999px;
}
[data-bs-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #334155;
}

/* ------------------------------------------------------------------------------
   2.1 Universal Light & Night Mode Word/Color Adaptation Rules
   Guarantees high-contrast readability when toggling light <-> night.
   ------------------------------------------------------------------------------ */

/* Smooth Theme Transitions */
body,
.navbar-bbu-astra,
.card,
.card-bbu,
.card-bbu-header,
.table-bbu tbody td,
.table-bbu thead th,
.footer-bbu,
.toolbar-card,
.form-control,
.form-select,
.stat-chip,
.btn-bbu-soft,
.table-footer-bbu,
.dropdown-menu,
.detail-profile-body {
    transition: background-color 0.22s ease, color 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

/* --- Light Mode Text Colors (High-Contrast, Crisp & Confident) --- */
.text-navy {
    color: var(--bbu-navy) !important;
}

[data-bs-theme="light"] .text-dark,
:root:not([data-bs-theme="dark"]) .text-dark {
    color: #0f172a !important;
}

[data-bs-theme="light"] .text-muted,
:root:not([data-bs-theme="dark"]) .text-muted {
    color: #475569 !important;
}

[data-bs-theme="light"] .text-secondary,
:root:not([data-bs-theme="dark"]) .text-secondary {
    color: #334155 !important;
}

[data-bs-theme="light"] .text-body,
:root:not([data-bs-theme="dark"]) .text-body {
    color: #0f172a !important;
}

[data-bs-theme="light"] a.text-dark:hover,
:root:not([data-bs-theme="dark"]) a.text-dark:hover {
    color: var(--bbu-primary) !important;
}

/* --- Night / Dark Mode Text Colors (Deep Midnight Sapphire / Ice White Contrast) --- */
[data-bs-theme="dark"] .text-dark {
    color: var(--bbu-text) !important;
}

[data-bs-theme="dark"] .text-navy {
    color: #ffffff !important;
}

[data-bs-theme="dark"] .text-secondary {
    color: #cbd5e1 !important;
}

[data-bs-theme="dark"] .text-muted {
    color: #94a3b8 !important;
}

[data-bs-theme="dark"] .text-black {
    color: #ffffff !important;
}

[data-bs-theme="dark"] .text-body {
    color: var(--bbu-text) !important;
}

[data-bs-theme="dark"] .text-primary {
    color: #60a5fa !important;
}

[data-bs-theme="dark"] .text-success {
    color: #34d399 !important;
}

[data-bs-theme="dark"] .text-warning {
    color: #fbbf24 !important;
}

[data-bs-theme="dark"] .text-danger {
    color: #f87171 !important;
}

[data-bs-theme="dark"] .text-info {
    color: #38bdf8 !important;
}

[data-bs-theme="dark"] a.text-dark {
    color: var(--bbu-text) !important;
}

[data-bs-theme="dark"] a.text-dark:hover {
    color: var(--bbu-primary-dark) !important;
}

[data-bs-theme="dark"] a.text-muted:hover {
    color: #60a5fa !important;
}

[data-bs-theme="dark"] a.text-secondary:hover {
    color: #60a5fa !important;
}

/* Headings in Dark Mode */
[data-bs-theme="dark"] h1,
[data-bs-theme="dark"] h2,
[data-bs-theme="dark"] h3,
[data-bs-theme="dark"] h4,
[data-bs-theme="dark"] h5,
[data-bs-theme="dark"] h6 {
    color: #f8fafc;
}

/* ==============================================================================
   Executive Dashboard Hero Banner (.hero-banner)
   Royal Navy Gradient in Light Mode, Deep Cosmic Navy in Dark Mode.
   Guarantees 100% text contrast and readability in BOTH themes.
   ============================================================================== */
.hero-banner {
    background:
        radial-gradient(120% 160% at 88% -20%, rgba(245, 158, 11, 0.28) 0%, transparent 45%),
        radial-gradient(90% 130% at 110% 120%, rgba(59, 130, 246, 0.5) 0%, transparent 55%),
        var(--grad-ink) !important;
    background-size: 100% 100%, 100% 100%, 220% 220% !important;
    animation: heroAurora 16s ease-in-out infinite alternate;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.08) !important;
    border-radius: var(--radius-card);
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 48px -18px rgba(10, 24, 48, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.12) !important;
}

@keyframes heroAurora {
    0% { background-position: 0% 0%, 100% 100%, 0% 50%; }
    100% { background-position: 0% 0%, 100% 100%, 100% 50%; }
}

.hero-banner::after {
    content: '';
    position: absolute;
    top: -55%;
    right: -18%;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.24) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: heroOrbFloat 9s ease-in-out infinite alternate;
}

@keyframes heroOrbFloat {
    from { transform: translate3d(0, 0, 0) scale(1); }
    to { transform: translate3d(-26px, 22px, 0) scale(1.12); }
}

@media (prefers-reduced-motion: reduce) {
    .hero-banner { animation: none; }
    .hero-banner::after { animation: none; }
}

.hero-banner h1,
.hero-banner h2,
.hero-banner h3,
.hero-banner h4,
.hero-banner h5,
.hero-banner h6,
.hero-banner .text-white {
    color: #ffffff !important;
}

.hero-banner p.lead,
.hero-banner .text-white-50 {
    color: rgba(255, 255, 255, 0.88) !important;
}

.hero-banner .badge-soft-warning {
    background-color: rgba(245, 158, 11, 0.22) !important;
    color: #fef08a !important;
    border: 1px solid rgba(245, 158, 11, 0.35) !important;
}

[data-bs-theme="dark"] .hero-banner {
    background: linear-gradient(135deg, #0b1329 0%, #131c38 55%, #1e3a8a 100%) !important;
    border: 1px solid rgba(148, 163, 184, 0.2) !important;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.5) !important;
}

/* Explicit Brand Banner Headers: Always Pure White */
.detail-hero-banner h1, .detail-hero-banner h2, .detail-hero-banner h3, .detail-hero-banner h4, .detail-hero-banner h5, .detail-hero-banner h6,
.id-card-header h1, .id-card-header h2, .id-card-header h3, .id-card-header h4, .id-card-header h5, .id-card-header h6 {
    color: #ffffff !important;
}

/* Detail Hero White Badges */
.detail-hero-banner .badge.bg-white {
    background-color: #ffffff !important;
    color: #0b1e36 !important;
}

/* --- Dark Mode Surface & Background Inversion --- */
[data-bs-theme="dark"] .bg-white:not(.transcript-sheet):not(.transcript-sheet *):not(.detail-hero-banner .badge):not(.bbu-crest-icon) {
    background-color: var(--bbu-surface) !important;
}

[data-bs-theme="dark"] .bg-light:not(.transcript-sheet):not(.transcript-sheet *) {
    background-color: var(--bbu-surface-subtle) !important;
}

[data-bs-theme="dark"] .border-light {
    border-color: var(--bbu-border) !important;
}

/* Cards & Panels in Dark Mode (Midnight Navy Elevated) */
[data-bs-theme="dark"] .card,
[data-bs-theme="dark"] .card-bbu {
    background-color: var(--bbu-surface) !important;
    border: 1px solid var(--bbu-border) !important;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 6px 18px rgba(0, 0, 0, 0.3) !important;
    color: var(--bbu-text);
}

[data-bs-theme="dark"] .card-bbu:hover {
    border-color: rgba(59, 130, 246, 0.35) !important;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.55) !important;
}

[data-bs-theme="dark"] .card-header,
[data-bs-theme="dark"] .card-bbu-header {
    background-color: var(--bbu-surface-subtle) !important;
    border-bottom: 1px solid var(--bbu-border) !important;
    color: var(--bbu-text);
}

[data-bs-theme="dark"] .card-footer {
    background-color: var(--bbu-surface-subtle) !important;
    border-top: 1px solid var(--bbu-border) !important;
    color: var(--bbu-muted);
}

/* Dropdown Menus in Dark Mode */
[data-bs-theme="dark"] .dropdown-menu {
    background-color: #111827 !important;
    border: 1px solid rgba(148, 163, 184, 0.16) !important;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.6) !important;
    color: var(--bbu-text);
}

[data-bs-theme="dark"] .dropdown-item {
    color: var(--bbu-text);
}

[data-bs-theme="dark"] .dropdown-item:hover,
[data-bs-theme="dark"] .dropdown-item:focus {
    background-color: #1e293b !important;
    color: #60a5fa !important;
}

[data-bs-theme="dark"] .dropdown-divider {
    border-color: rgba(148, 163, 184, 0.14) !important;
}

/* Form Controls in Dark Mode */
[data-bs-theme="dark"] .form-control,
[data-bs-theme="dark"] .form-select {
    background-color: #162032 !important;
    border: 1.5px solid rgba(148, 163, 184, 0.2) !important;
    color: #f8fafc !important;
}

[data-bs-theme="dark"] .form-control:focus,
[data-bs-theme="dark"] .form-select:focus {
    background-color: #162032 !important;
    border-color: #3b82f6 !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25) !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .form-control::placeholder {
    color: #64748b !important;
    opacity: 0.9;
}

[data-bs-theme="dark"] .input-group-text {
    background-color: #162032 !important;
    border: 1.5px solid rgba(148, 163, 184, 0.2) !important;
    color: #94a3b8 !important;
}

/* Badges in Dark Mode (Linear Translucent Aesthetic) */
[data-bs-theme="dark"] .badge.bg-light {
    background-color: var(--bbu-surface-subtle) !important;
    border-color: var(--bbu-border) !important;
}

[data-bs-theme="dark"] .badge.bg-light.text-dark {
    color: var(--bbu-text) !important;
}

[data-bs-theme="dark"] .badge.bg-light.text-primary {
    color: var(--bbu-primary) !important;
}

[data-bs-theme="dark"] .badge.bg-dark {
    background-color: rgba(248, 250, 252, 0.14) !important;
    color: var(--bbu-text) !important;
    border: 1px solid rgba(248, 250, 252, 0.22) !important;
}

[data-bs-theme="dark"] .badge-soft-success {
    background-color: rgba(16, 185, 129, 0.14) !important;
    color: #34d399 !important;
    border: 1px solid rgba(16, 185, 129, 0.25) !important;
}

[data-bs-theme="dark"] .badge-soft-warning {
    background-color: rgba(251, 191, 36, 0.14) !important;
    color: #fbbf24 !important;
    border: 1px solid rgba(251, 191, 36, 0.25) !important;
}

[data-bs-theme="dark"] .badge-soft-danger {
    background-color: rgba(248, 113, 113, 0.14) !important;
    color: #fb7185 !important;
    border: 1px solid rgba(248, 113, 113, 0.25) !important;
}

[data-bs-theme="dark"] .badge-soft-primary {
    background-color: rgba(59, 130, 246, 0.14) !important;
    color: #60a5fa !important;
    border: 1px solid rgba(59, 130, 246, 0.25) !important;
}

[data-bs-theme="dark"] .badge-soft-info {
    background-color: rgba(56, 189, 248, 0.14) !important;
    color: #38bdf8 !important;
    border: 1px solid rgba(56, 189, 248, 0.25) !important;
}

[data-bs-theme="dark"] .badge-soft-secondary {
    background-color: rgba(255, 255, 255, 0.08) !important;
    color: #cbd5e1 !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
}

/* Buttons in Dark Mode */
[data-bs-theme="dark"] .btn-light {
    background-color: var(--bbu-surface-subtle) !important;
    border-color: var(--bbu-border) !important;
    color: var(--bbu-text) !important;
}

[data-bs-theme="dark"] .btn-light:hover {
    background-color: #1e293b !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .btn-bbu-soft {
    background-color: var(--bbu-surface-subtle) !important;
    border: 1px solid var(--bbu-border) !important;
    color: var(--bbu-text) !important;
}

[data-bs-theme="dark"] .btn-bbu-soft:hover {
    background-color: #1e293b !important;
    border-color: rgba(148, 163, 184, 0.25) !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .btn-outline-secondary {
    border-color: rgba(148, 163, 184, 0.25) !important;
    color: #cbd5e1 !important;
}

[data-bs-theme="dark"] .btn-outline-secondary:hover {
    background-color: #1e293b !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .btn-outline-primary {
    color: #60a5fa !important;
    border-color: #3b82f6 !important;
}

[data-bs-theme="dark"] .btn-outline-primary:hover {
    background-color: #3b82f6 !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .btn-outline-success {
    color: #34d399 !important;
    border-color: #10b981 !important;
}

[data-bs-theme="dark"] .btn-outline-success:hover {
    background-color: #10b981 !important;
    color: #ffffff !important;
}

[data-bs-theme="dark"] .btn-outline-warning {
    color: #fbbf24 !important;
    border-color: #fbbf24 !important;
}

[data-bs-theme="dark"] .btn-outline-warning:hover {
    background-color: #fbbf24 !important;
    color: #0b0f19 !important;
}

/* Tables in Dark Mode (Midnight Slate Rows) */
[data-bs-theme="dark"] .table {
    color: var(--bbu-text);
    border-color: var(--bbu-border);
}

[data-bs-theme="dark"] .table-bbu thead th {
    background-color: #162032 !important;
    color: #94a3b8 !important;
    border-bottom: 1px solid rgba(148, 163, 184, 0.15) !important;
}

[data-bs-theme="dark"] .table-bbu tbody td {
    background-color: #111827 !important;
    color: #f8fafc !important;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1) !important;
}

[data-bs-theme="dark"] .table-bbu tbody tr:hover td {
    background-color: #1e293b !important;
}

/* Footer & Table Footer Components — Premium Midnight Navy */
.footer-bbu {
    background:
        radial-gradient(70% 130% at 100% 0%, rgba(245, 158, 11, 0.1) 0%, transparent 55%),
        radial-gradient(80% 150% at 0% 100%, rgba(45, 92, 246, 0.16) 0%, transparent 60%),
        linear-gradient(180deg, #0c1a33 0%, #0a1428 100%);
    border-top: 1px solid rgba(148, 163, 184, 0.16);
    position: relative;
}

.footer-bbu::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 3px;
    background-image: linear-gradient(90deg, transparent, rgba(45, 92, 246, 0.9), rgba(245, 158, 11, 0.9), transparent);
}

:root .footer-bbu h6,
:root .footer-bbu .text-dark,
:root .footer-bbu .text-white {
    color: #ffffff !important;
}

:root .footer-bbu p,
:root .footer-bbu small,
:root .footer-bbu li a,
:root .footer-bbu .text-muted,
:root .footer-bbu .text-secondary {
    color: #9db0cc !important;
}

.footer-bbu li a {
    transition: color 0.18s ease, transform 0.18s ease;
    display: inline-block;
}

.footer-bbu li a:hover {
    color: #fcd34d !important;
    transform: translateX(3px);
}

.footer-bbu .badge-soft-primary {
    background-color: rgba(45, 92, 246, 0.18) !important;
    color: #93b4ff !important;
    border: 1px solid rgba(45, 92, 246, 0.35) !important;
}

.footer-bbu .text-primary {
    color: #7fa8ff !important;
}

.table-footer-bbu {
    background-color: var(--bbu-surface);
    border-top: 1px solid var(--bbu-border);
}

[data-bs-theme="dark"] .table-footer-bbu {
    background-color: #0a0e18 !important;
    border-top: 1px solid rgba(148, 163, 184, 0.12) !important;
}

/* Official Academic Transcript Certificate (Strictly Preserved Paper Style) */
.transcript-sheet,
.transcript-sheet * {
    color-scheme: light;
}

.transcript-sheet {
    background-color: #ffffff !important;
    color: #0b1e36 !important;
}

.transcript-sheet .text-muted {
    color: #4b5563 !important;
}

.transcript-sheet .text-dark {
    color: #0b1e36 !important;
}

.transcript-sheet .bg-light {
    background-color: #f8fafc !important;
}

.transcript-sheet .bg-white {
    background-color: #ffffff !important;
}

/* ------------------------------------------------------------------------------
   3. Global Base & Khmer Typography Rules
   ------------------------------------------------------------------------------ */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bbu-bg);
    color: var(--bbu-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    margin: 0;
    line-height: 1.68;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Khmer Text Rendering Rules */
:lang(km):not([class*="fa-"]):not(.fa-solid):not(.fa-regular):not(.fa-brands):not(i):not(svg),
.khmer-text {
    font-family: var(--font-khmer);
    line-height: 1.75 !important;
    letter-spacing: normal !important;
    overflow-wrap: break-word;
}

/* Ensure Font Awesome always retains its icon font */
.fa, .fas, .fa-solid, .far, .fa-regular, .fab, .fa-brands, [class*="fa-"], [class^="fa-"] {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands" !important;
    font-style: normal;
    display: inline-block;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 700;
    color: var(--bbu-navy);
    letter-spacing: -0.015em;
    line-height: 1.35;
    margin-bottom: 0.5rem;
}

/* Dark banners & headers must ALWAYS have high-contrast text */
.hero-banner h1, .hero-banner h2, .hero-banner h3, .hero-banner h4, .hero-banner h5, .hero-banner h6,
.detail-hero-banner h1, .detail-hero-banner h2, .detail-hero-banner h3, .detail-hero-banner h4, .detail-hero-banner h5, .detail-hero-banner h6,
.id-card-header h1, .id-card-header h2, .id-card-header h3, .id-card-header h4, .id-card-header h5, .id-card-header h6 {
    color: #ffffff !important;
}

.id-card-header small,
.id-card-header .id-card-subhead,
.id-card-header .text-warning {
    color: var(--bbu-gold) !important;
}

[data-bs-theme="dark"] h1,
[data-bs-theme="dark"] h2,
[data-bs-theme="dark"] h3,
[data-bs-theme="dark"] h4,
[data-bs-theme="dark"] h5,
[data-bs-theme="dark"] h6 {
    color: var(--bbu-text);
}

p {
    margin-bottom: 0.75rem;
}

a {
    color: var(--bbu-primary);
    text-decoration: none;
    transition: color 0.18s ease;
}

a:hover {
    color: var(--bbu-primary-dark);
}

/* ------------------------------------------------------------------------------
   4. Navbar (Astra Starter Site Look: White, Sticky, Soft Shadow, Blur)
   ------------------------------------------------------------------------------ */
.navbar-bbu-astra {
    background-color: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--bbu-border);
    box-shadow: 0 2px 16px rgba(16, 24, 40, 0.05);
    padding: 0.65rem 0;
    z-index: 1030;
    transition: background-color 0.25s ease, border-color 0.25s ease;
}

[data-bs-theme="dark"] .navbar-bbu-astra {
    background-color: rgba(11, 15, 25, 0.92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.14);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
}

/* Brand Logo Badge & Typography */
.navbar-brand-bbu {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    padding: 0;
}

.bbu-logo-badge {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bbu-surface);
    border: 1.5px solid var(--bbu-border);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(16, 24, 40, 0.06);
    transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    padding: 2px;
    flex-shrink: 0;
}

.navbar-brand-bbu:hover .bbu-logo-badge {
    transform: translateY(-1px) scale(1.05);
    border-color: var(--bbu-primary);
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.18);
}

.bbu-wordmark {
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--bbu-navy);
    letter-spacing: -0.025em;
    line-height: 1.1;
}

[data-bs-theme="dark"] .bbu-wordmark {
    color: #ffffff;
}

.bbu-brand-subtitle {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--bbu-muted);
    letter-spacing: 0.02em;
}

.badge-academic-term {
    background: var(--bbu-gold-soft);
    color: var(--bbu-gold-dark, #b45309);
    border: 1px solid rgba(245, 158, 11, 0.25);
    font-size: 0.68rem;
    font-weight: 700;
    padding: 0.12rem 0.5rem;
    border-radius: var(--radius-pill);
    letter-spacing: 0.03em;
    line-height: 1.2;
}

/* Nav Divider */
.bbu-nav-divider {
    width: 1px;
    height: 30px;
    background-color: var(--bbu-border);
    margin: 0 1rem;
    flex-shrink: 0;
}

/* Nav Links & Active Pill */
.navbar-bbu-astra .nav-link,
.nav-link-bbu {
    color: #334155 !important;
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.48rem 0.95rem !important;
    border-radius: var(--radius-pill);
    margin: 0 2px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid transparent;
}

.nav-link-icon {
    font-size: 0.95rem;
    transition: transform 0.2s ease;
}

.navbar-bbu-astra .nav-link:hover,
.nav-link-bbu:hover {
    color: var(--bbu-primary) !important;
    background-color: var(--bbu-primary-soft);
    transform: translateY(-1px);
}

.navbar-bbu-astra .nav-link:hover .nav-link-icon,
.nav-link-bbu:hover .nav-link-icon {
    transform: scale(1.15);
}

.navbar-bbu-astra .nav-link.active,
.nav-link-bbu.active {
    color: var(--bbu-primary) !important;
    background-color: var(--bbu-primary-soft) !important;
    font-weight: 700;
    border: 1px solid rgba(37, 99, 235, 0.2);
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.08);
}

[data-bs-theme="dark"] .navbar-bbu-astra .nav-link,
[data-bs-theme="dark"] .nav-link-bbu {
    color: #cbd5e1 !important;
}

[data-bs-theme="dark"] .navbar-bbu-astra .nav-link:hover,
[data-bs-theme="dark"] .nav-link-bbu:hover {
    color: #ffffff !important;
    background-color: rgba(59, 130, 246, 0.16) !important;
}

[data-bs-theme="dark"] .navbar-bbu-astra .nav-link.active,
[data-bs-theme="dark"] .nav-link-bbu.active {
    background-color: rgba(59, 130, 246, 0.18) !important;
    color: #60a5fa !important;
    border-color: rgba(59, 130, 246, 0.35);
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.15);
}

/* Navbar Search Bar & Input */
.nav-search-form {
    display: inline-flex;
    align-items: center;
    margin: 0;
}

.nav-search-bar {
    background-color: var(--bbu-surface-subtle);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-pill);
    padding: 0.32rem 0.75rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.nav-search-bar:focus-within {
    border-color: var(--bbu-primary);
    background-color: var(--bbu-surface);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.nav-search-bar .search-icon {
    color: var(--bbu-muted);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.nav-search-input {
    border: none;
    background: transparent;
    color: var(--bbu-text);
    font-size: 0.84rem;
    width: 145px;
    outline: none;
    padding: 0;
    transition: width 0.22s ease;
}

.nav-search-input:focus {
    width: 195px;
}

.nav-search-input::placeholder {
    color: var(--bbu-muted);
    font-size: 0.82rem;
}

[data-bs-theme="dark"] .nav-search-bar {
    background-color: #162032;
    border-color: rgba(148, 163, 184, 0.16);
}

[data-bs-theme="dark"] .nav-search-bar:focus-within {
    background-color: #1e293b;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

[data-bs-theme="dark"] .nav-search-input {
    color: #f8fafc;
}

[data-bs-theme="dark"] .nav-search-input::placeholder {
    color: #94a3b8;
}

/* User Avatar & Status Pulse Dot */
.user-status-dot {
    position: absolute;
    bottom: -1px;
    right: -1px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background-color: #10b981;
    border: 2px solid var(--bbu-surface);
    box-shadow: 0 0 0 1px rgba(16, 185, 129, 0.4);
}

.user-email-max {
    max-width: 220px;
}

/* Theme Toggle Button */
.btn-theme-toggle {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--bbu-border);
    background: var(--bbu-surface);
    color: var(--bbu-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-theme-toggle:hover {
    background: var(--bbu-primary-soft);
    color: var(--bbu-primary);
    border-color: var(--bbu-primary);
    transform: rotate(15deg);
}

/* ------------------------------------------------------------------------------
   5. Buttons (Pill-Shaped, Confident, Hover Lift)
   ------------------------------------------------------------------------------ */
.btn {
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 0.92rem;
    padding: 0.55rem 1.35rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
    border: 1px solid transparent;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn-sm {
    padding: 0.38rem 0.95rem;
    font-size: 0.82rem;
}

.btn-lg {
    padding: 0.72rem 1.85rem;
    font-size: 1rem;
}

/* Primary Button — Royal Azure Gradient with Sheen */
.btn-bbu-primary {
    background-image: var(--grad-primary);
    background-color: var(--bbu-primary);
    background-size: 160% 160%;
    background-position: 0% 50%;
    color: #ffffff !important;
    box-shadow: 0 4px 14px -4px rgba(45, 92, 246, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.22);
    transition: transform 0.18s ease, box-shadow 0.18s ease, background-position 0.3s ease, border-color 0.18s ease;
}

.btn-bbu-primary:hover,
.btn-bbu-primary:focus-visible {
    background-position: 100% 50%;
    box-shadow: var(--shadow-glow-primary), inset 0 1px 0 rgba(255, 255, 255, 0.28);
    color: #ffffff !important;
}

/* Warm Gold Pill CTA Button — Amber Gradient */
.btn-bbu-gold {
    background-image: var(--grad-gold);
    background-color: var(--bbu-gold);
    background-size: 160% 160%;
    background-position: 0% 50%;
    color: #221703 !important;
    font-weight: 700;
    box-shadow: 0 4px 14px -4px rgba(245, 158, 11, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    transition: transform 0.18s ease, box-shadow 0.18s ease, background-position 0.3s ease, border-color 0.18s ease;
}

.btn-bbu-gold:hover,
.btn-bbu-gold:focus-visible {
    background-position: 100% 50%;
    color: #221703 !important;
    box-shadow: var(--shadow-glow-gold), inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

/* Ghost / Soft Primary Button */
.btn-ghost-primary {
    background-color: transparent;
    color: var(--bbu-primary) !important;
    border: 1.5px solid rgba(45, 92, 246, 0.55);
}

.btn-ghost-primary:hover {
    background-color: var(--bbu-primary-soft);
    border-color: var(--bbu-primary);
    color: var(--bbu-primary-dark) !important;
    box-shadow: 0 6px 16px -6px rgba(45, 92, 246, 0.35);
}

/* Soft Secondary Button */
.btn-bbu-soft {
    background-color: var(--bbu-surface-subtle);
    color: var(--bbu-text) !important;
    border: 1px solid var(--bbu-border);
}

.btn-bbu-soft:hover {
    background-color: var(--bbu-primary-soft);
    border-color: rgba(45, 92, 246, 0.35);
    color: var(--bbu-primary) !important;
}

/* Danger Pill Button */
.btn-bbu-danger {
    background-image: linear-gradient(135deg, #f87171 0%, #dc2626 55%, #b91c1c 100%);
    background-color: var(--bbu-danger);
    color: #ffffff !important;
    box-shadow: 0 4px 14px -4px rgba(220, 38, 38, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-bbu-danger:hover {
    color: #ffffff !important;
    box-shadow: 0 10px 30px -8px rgba(220, 38, 38, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

/* ------------------------------------------------------------------------------
   6. Cards & Containers (Airy, Generous Whitespace, Soft Shadows)
   ------------------------------------------------------------------------------ */
.card-bbu {
    background-color: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.card-bbu:hover {
    box-shadow: var(--shadow-hover);
    border-color: rgba(37, 99, 235, 0.25);
}

.card-bbu-header {
    background-color: var(--bbu-surface-subtle);
    border-bottom: 1px solid var(--bbu-border);
    padding: 1.15rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-bbu-body {
    padding: 1.5rem;
}

/* ------------------------------------------------------------------------------
   7. Page Header Component (.page-header)
   ------------------------------------------------------------------------------ */
.page-header {
    margin-bottom: 1.75rem;
}

.page-header-title {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--bbu-navy);
    margin-bottom: 0.25rem;
}

[data-bs-theme="dark"] .page-header-title {
    color: #ffffff;
}

.page-header-subtitle {
    color: var(--bbu-muted);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.breadcrumb-bbu {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-pill);
    padding: 0.38rem 1rem;
    display: inline-flex;
    align-items: center;
    margin-bottom: 0.75rem;
    box-shadow: 0 1px 3px rgba(16, 24, 40, 0.04);
    font-size: 0.85rem;
}

.breadcrumb-bbu .breadcrumb-item {
    display: inline-flex;
    align-items: center;
}

.breadcrumb-bbu .breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--bbu-muted);
    font-size: 1.15rem;
    line-height: 1;
    vertical-align: middle;
    padding: 0 0.45rem;
}

.breadcrumb-bbu .breadcrumb-item a {
    color: var(--bbu-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.18s ease;
}

.breadcrumb-bbu .breadcrumb-item a:hover {
    color: var(--bbu-primary);
}

.breadcrumb-bbu .breadcrumb-item.active {
    color: var(--bbu-navy);
    font-weight: 600;
}

[data-bs-theme="dark"] .breadcrumb-bbu {
    background: var(--bbu-surface);
    border-color: var(--bbu-border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

[data-bs-theme="dark"] .breadcrumb-bbu .breadcrumb-item.active {
    color: #ffffff;
}

/* ------------------------------------------------------------------------------
   8. Toolbar Card & Stat Chips
   ------------------------------------------------------------------------------ */
.toolbar-card {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    padding: 1rem 1.25rem;
    margin-bottom: 1.25rem;
}

.stat-chips-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 1.25rem;
}

.stat-chip {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-pill);
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 1px 3px rgba(16, 24, 40, 0.04);
}

.stat-chip strong {
    color: var(--bbu-navy);
    font-weight: 700;
}

[data-bs-theme="dark"] .stat-chip strong {
    color: #ffffff;
}

/* ------------------------------------------------------------------------------
   8.1 KPI Stat Cards Component (.kpi-card & .kpi-icon)
   Executive metric summary cards on the academic dashboard
   ------------------------------------------------------------------------------ */
.kpi-card {
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.2s ease;
    border: 1px solid var(--bbu-border) !important;
}

.kpi-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover) !important;
}

.kpi-icon {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    flex-shrink: 0;
    color: #ffffff;
    position: relative;
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.25s ease;
}

.kpi-icon::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.28) 0%, transparent 55%);
    pointer-events: none;
}

.kpi-card:hover .kpi-icon {
    transform: scale(1.1) rotate(-4deg);
}

/* Gradient KPI Tiles (shared by light & dark themes) */
.kpi-card-blue .kpi-icon {
    background-image: linear-gradient(135deg, #60a5fa 0%, #2d5cf6 60%, #1d3fd0 100%);
    box-shadow: 0 8px 18px -6px rgba(45, 92, 246, 0.6);
}
.kpi-card-green .kpi-icon {
    background-image: linear-gradient(135deg, #34d399 0%, #10b981 55%, #047857 100%);
    box-shadow: 0 8px 18px -6px rgba(16, 185, 129, 0.55);
}
.kpi-card-amber .kpi-icon {
    background-image: linear-gradient(135deg, #fcd34d 0%, #f59e0b 55%, #d97706 100%);
    box-shadow: 0 8px 18px -6px rgba(245, 158, 11, 0.55);
}
.kpi-card-purple .kpi-icon {
    background-image: linear-gradient(135deg, #c084fc 0%, #8b5cf6 55%, #6d28d9 100%);
    box-shadow: 0 8px 18px -6px rgba(139, 92, 246, 0.55);
}

[data-bs-theme="dark"] .kpi-card-blue .kpi-icon,
[data-bs-theme="dark"] .kpi-card-green .kpi-icon,
[data-bs-theme="dark"] .kpi-card-amber .kpi-icon,
[data-bs-theme="dark"] .kpi-card-purple .kpi-icon {
    color: #ffffff;
}

/* KPI Card subtle top accent on hover */
.kpi-card {
    position: relative;
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-image: linear-gradient(90deg, transparent, var(--bbu-primary), transparent);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.kpi-card:hover::before {
    opacity: 1;
}
.kpi-card-blue::before { background-image: linear-gradient(90deg, transparent, #2d5cf6, transparent); }
.kpi-card-green::before { background-image: linear-gradient(90deg, transparent, #10b981, transparent); }
.kpi-card-amber::before { background-image: linear-gradient(90deg, transparent, #f59e0b, transparent); }
.kpi-card-purple::before { background-image: linear-gradient(90deg, transparent, #8b5cf6, transparent); }

[data-bs-theme="dark"] .kpi-card-blue:hover { border-color: rgba(59, 130, 246, 0.45) !important; }
[data-bs-theme="dark"] .kpi-card-green:hover { border-color: rgba(16, 185, 129, 0.45) !important; }
[data-bs-theme="dark"] .kpi-card-amber:hover { border-color: rgba(251, 191, 36, 0.45) !important; }
[data-bs-theme="dark"] .kpi-card-purple:hover { border-color: rgba(168, 85, 247, 0.45) !important; }

/* ------------------------------------------------------------------------------
   9. Enterprise Tables (.table-bbu)
   ------------------------------------------------------------------------------ */
.table-bbu-wrapper {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.table-bbu {
    width: 100%;
    margin-bottom: 0;
    border-collapse: separate;
    border-spacing: 0;
}

.table-bbu thead th {
    background-color: var(--bbu-surface-subtle);
    color: var(--bbu-muted);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.95rem 1.15rem;
    border-bottom: 1px solid var(--bbu-border);
    border-top: none;
    vertical-align: middle;
    position: sticky;
    top: 0;
    z-index: 2;
}

.table-bbu tbody td {
    padding: 1.05rem 1.15rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--bbu-border);
    color: var(--bbu-text);
    font-size: 0.92rem;
    background-color: var(--bbu-surface);
    transition: background-color 0.15s ease;
}

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

.table-bbu tbody tr:hover td {
    background-color: var(--bbu-surface-subtle);
}

/* Icon Button Group in Rows */
.action-btn-group {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.action-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--bbu-border);
    background: var(--bbu-surface);
    color: var(--bbu-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.82rem;
    transition: all 0.18s ease;
    padding: 0;
}

.action-btn:hover {
    color: var(--bbu-primary);
    background: var(--bbu-primary-soft);
    border-color: var(--bbu-primary);
    transform: translateY(-1px);
}

.action-btn-danger:hover {
    color: var(--bbu-danger);
    background: var(--bbu-danger-soft);
    border-color: var(--bbu-danger);
}

/* Mobile Stacked Card View for Table Rows below 768px */
@media (max-width: 767.98px) {
    .table-bbu-responsive thead {
        display: none;
    }
    .table-bbu-responsive, 
    .table-bbu-responsive tbody, 
    .table-bbu-responsive tr, 
    .table-bbu-responsive td {
        display: block;
        width: 100%;
    }
    .table-bbu-responsive tr {
        background: var(--bbu-surface);
        border: 1px solid var(--bbu-border);
        border-radius: var(--radius-card);
        margin-bottom: 1rem;
        padding: 0.75rem 1rem;
        box-shadow: var(--shadow-sm);
    }
    .table-bbu-responsive td {
        border-bottom: 1px dashed var(--bbu-border);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.6rem 0;
    }
    .table-bbu-responsive td::before {
        content: attr(data-label);
        font-weight: 700;
        font-size: 0.8rem;
        text-transform: uppercase;
        color: var(--bbu-muted);
        letter-spacing: 0.04em;
    }
    .table-bbu-responsive td:last-child {
        border-bottom: none;
        justify-content: flex-end;
    }
    .table-bbu-responsive td[colspan] {
        display: block;
    }
    .table-bbu-responsive td[colspan]::before {
        content: none;
    }
}

/* ------------------------------------------------------------------------------
   10. Soft Badges & Grade Pills
   ------------------------------------------------------------------------------ */
.badge-soft-success {
    background-color: var(--bbu-success-soft);
    color: var(--bbu-success);
    font-weight: 600;
    border-radius: var(--radius-pill);
    padding: 0.32rem 0.75rem;
    font-size: 0.82rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.badge-soft-warning {
    background-color: var(--bbu-warning-soft);
    color: var(--bbu-warning);
    font-weight: 600;
    border-radius: var(--radius-pill);
    padding: 0.32rem 0.75rem;
    font-size: 0.82rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.badge-soft-danger {
    background-color: var(--bbu-danger-soft);
    color: var(--bbu-danger);
    font-weight: 600;
    border-radius: var(--radius-pill);
    padding: 0.32rem 0.75rem;
    font-size: 0.82rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.badge-soft-info {
    background-color: var(--bbu-info-soft);
    color: var(--bbu-info);
    font-weight: 600;
    border-radius: var(--radius-pill);
    padding: 0.32rem 0.75rem;
    font-size: 0.82rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.badge-soft-primary {
    background-color: var(--bbu-primary-soft);
    color: var(--bbu-primary);
    font-weight: 600;
    border-radius: var(--radius-pill);
    padding: 0.32rem 0.75rem;
    font-size: 0.82rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.badge-soft-secondary {
    background-color: var(--bbu-surface-subtle);
    color: var(--bbu-muted);
    font-weight: 600;
    border-radius: var(--radius-pill);
    padding: 0.32rem 0.75rem;
    font-size: 0.82rem;
    border: 1px solid var(--bbu-border);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Status Indicator Dot */
.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
}
.status-dot-active { background-color: var(--bbu-success); box-shadow: 0 0 6px var(--bbu-success); }
.status-dot-warning { background-color: var(--bbu-warning); }
.status-dot-danger { background-color: var(--bbu-danger); }
.status-dot-info { background-color: var(--bbu-info); }

/* GPA Color Scale Pill */
.gpa-pill-high { background-color: var(--bbu-success-soft); color: var(--bbu-success); }
.gpa-pill-mid { background-color: var(--bbu-primary-soft); color: var(--bbu-primary); }
.gpa-pill-low { background-color: var(--bbu-warning-soft); color: var(--bbu-warning); }
.gpa-pill-fail { background-color: var(--bbu-danger-soft); color: var(--bbu-danger); }

/* ------------------------------------------------------------------------------
   11. Student Avatars (.student-avatar-*)
   ------------------------------------------------------------------------------ */
.student-avatar-thumb {
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--bbu-surface);
    box-shadow: 0 2px 6px rgba(16, 24, 40, 0.08);
}

.student-avatar-placeholder {
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bbu-navy-2) 0%, var(--bbu-primary) 100%);
    color: #ffffff;
    font-weight: 700;
    border: 2px solid var(--bbu-surface);
    box-shadow: 0 2px 6px rgba(16, 24, 40, 0.08);
}

.avatar-sm { width: 36px; height: 36px; font-size: 0.85rem; }
.avatar-md { width: 44px; height: 44px; font-size: 1.05rem; }
.avatar-lg { width: 68px; height: 68px; font-size: 1.6rem; }
.avatar-xl { width: 96px; height: 96px; font-size: 2.2rem; }

/* ------------------------------------------------------------------------------
   12. Form Controls & Inputs (Confident, Soft Focus Rings)
   ------------------------------------------------------------------------------ */
.form-control, .form-select {
    border-radius: var(--radius-input);
    border: 1.5px solid var(--bbu-border);
    padding: 0.65rem 1.05rem;
    font-size: 0.95rem;
    background-color: var(--bbu-surface);
    color: var(--bbu-text);
    transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--bbu-primary);
    box-shadow: var(--shadow-focus);
    outline: none;
    background-color: var(--bbu-surface);
    color: var(--bbu-text);
}

.form-label {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--bbu-navy);
    margin-bottom: 0.35rem;
}

[data-bs-theme="dark"] .form-label {
    color: var(--bbu-text);
}

.input-group-text {
    background-color: var(--bbu-surface-subtle);
    border: 1.5px solid var(--bbu-border);
    color: var(--bbu-muted);
    border-radius: var(--radius-input);
}

/* ------------------------------------------------------------------------------
   13. Empty State Component (.empty-state-card)
   ------------------------------------------------------------------------------ */
.empty-state-card {
    text-align: center;
    padding: 3.5rem 1.5rem;
    background: var(--bbu-surface);
    border-radius: var(--radius-card);
}

.empty-state-icon {
    width: 68px;
    height: 68px;
    border-radius: 50%;
    background-color: var(--bbu-surface-subtle);
    color: var(--bbu-subtle);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 1.25rem;
}

.empty-state-title {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--bbu-navy);
    margin-bottom: 0.35rem;
}

[data-bs-theme="dark"] .empty-state-title {
    color: #ffffff;
}

.empty-state-text {
    color: var(--bbu-muted);
    font-size: 0.92rem;
    max-width: 420px;
    margin: 0 auto 1.5rem auto;
}

/* ------------------------------------------------------------------------------
   14. Pagination Component
   ------------------------------------------------------------------------------ */
.pagination-bbu .page-link {
    border-radius: var(--radius-pill);
    margin: 0 3px;
    border: 1px solid var(--bbu-border);
    color: var(--bbu-muted);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.45rem 0.95rem;
    background: var(--bbu-surface);
    transition: all 0.18s ease;
}

.pagination-bbu .page-link:hover {
    background: var(--bbu-primary-soft);
    color: var(--bbu-primary);
    border-color: var(--bbu-primary);
}

.pagination-bbu .page-item.active .page-link {
    background: var(--bbu-primary);
    color: #ffffff;
    border-color: var(--bbu-primary);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.pagination-bbu .page-item.disabled .page-link {
    background: var(--bbu-surface-subtle);
    color: var(--bbu-subtle);
    border-color: var(--bbu-border);
}

/* ------------------------------------------------------------------------------
   15. Detail Page Hero & Overlapping Avatar (Prompt 4)
   ------------------------------------------------------------------------------ */
.detail-hero-banner {
    background: linear-gradient(135deg, var(--bbu-navy) 0%, var(--bbu-navy-2) 60%, var(--bbu-primary) 100%);
    min-height: 120px;
    height: auto;
    border-radius: var(--radius-card) var(--radius-card) 0 0;
    position: relative;
}

.detail-avatar-wrapper {
    margin-top: -50px;
    padding-left: 1.5rem;
    position: relative;
    z-index: 2;
}

.detail-avatar-container {
    margin-top: -55px;
    position: relative;
    z-index: 5;
    flex-shrink: 0;
}

.detail-profile-body {
    padding: 0 1.5rem 1.5rem 1.5rem;
    position: relative;
}

.bbu-nav-tabs {
    border-bottom: 2px solid var(--bbu-border);
    gap: 0.25rem;
}

.bbu-nav-tabs .nav-link {
    color: var(--bbu-muted);
    font-weight: 600;
    font-size: 0.92rem;
    border: none;
    border-bottom: 3px solid transparent;
    border-radius: 0;
    padding: 0.75rem 1.1rem;
    transition: all 0.2s ease;
    background: transparent;
}

.bbu-nav-tabs .nav-link:hover {
    color: var(--bbu-primary);
    border-bottom-color: var(--bbu-border);
}

.bbu-nav-tabs .nav-link.active {
    color: var(--bbu-primary);
    border-bottom-color: var(--bbu-primary);
    background: transparent;
}

/* ------------------------------------------------------------------------------
   16. Split-Screen Login & Register Pages (Prompt 6)
   ------------------------------------------------------------------------------ */
.split-auth-container {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.split-auth-left {
    background: linear-gradient(135deg, var(--bbu-navy) 0%, var(--bbu-navy-2) 60%, #1d3d6a 100%);
    color: #ffffff;
    padding: 3rem 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

[data-bs-theme="dark"] .split-auth-left {
    background: linear-gradient(135deg, #0b1329 0%, #131f3d 60%, #1e3a8a 100%) !important;
    border-right: 1px solid rgba(255, 255, 255, 0.08);
}

.split-auth-benefit {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 1.25rem;
}

.split-auth-benefit-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    color: var(--bbu-gold);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.bbu-crest-square {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-card);
    background: linear-gradient(135deg, var(--bbu-gold) 0%, #d97706 100%);
    color: var(--bbu-navy);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}


/* ------------------------------------------------------------------------------
   17. Official Academic Transcript Certificate & Print Layout
   ------------------------------------------------------------------------------ */
.transcript-sheet {
    background-color: #ffffff !important;
    color: #0b1e36 !important;
    border: 2px solid #0b1e36;
    outline: 1px solid #0b1e36;
    outline-offset: -5px;
    border-radius: 3px;
    padding: 32px 40px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
    color-scheme: light !important;
}

/* Ensure COMPLETE Dark Mode Immunity for the Transcript Document */
[data-bs-theme="dark"] .transcript-sheet,
.transcript-sheet,
.transcript-sheet * {
    color-scheme: light !important;
}

[data-bs-theme="dark"] .transcript-sheet {
    background-color: #ffffff !important;
    color: #0b1e36 !important;
}

.transcript-content-layer {
    position: relative;
    z-index: 1;
}

/* Official Letterhead */
.transcript-letterhead {
    border-bottom: 2px solid #0b1e36;
    padding-bottom: 14px;
    margin-bottom: 14px;
}

.transcript-bbu-crest {
    width: 78px;
    height: auto;
    filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.12));
}

.transcript-meta-badge {
    background-color: #ffffff !important;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 0.75rem;
    line-height: 1.45;
    color: #0b1e36 !important;
}

/* Student Profile Box (Integrated Bio-Data Frame) */
.transcript-profile-box {
    background-color: #ffffff !important;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    margin-bottom: 16px;
    color: #0b1e36 !important;
}

.transcript-photo-frame {
    width: 95px;
    height: 118px;
    border: 1.5px solid #0b1e36;
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
    background-color: #f8fafc !important;
    display: flex;
    align-items: center;
    justify-content: center;
}

.transcript-photo-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.transcript-meta-label {
    width: 142px;
    flex-shrink: 0;
    color: #475569 !important;
    font-size: 0.77rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2px;
}

.transcript-meta-val {
    color: #0b1e36 !important;
    font-size: 0.85rem;
    font-weight: 700;
}

/* Academic Performance Table */
.transcript-sheet .table,
[data-bs-theme="dark"] .transcript-sheet .table {
    --bs-table-bg: #ffffff !important;
    --bs-table-color: #0b1e36 !important;
    --bs-table-striped-bg: #f8fafc !important;
    background-color: #ffffff !important;
    color: #0b1e36 !important;
    margin-bottom: 14px;
    border: 1px solid #0b1e36 !important;
}

.transcript-sheet .table th,
.transcript-sheet .table td,
[data-bs-theme="dark"] .transcript-sheet .table th,
[data-bs-theme="dark"] .transcript-sheet .table td {
    background-color: #ffffff !important;
    color: #0b1e36 !important;
    border-color: #cbd5e1 !important;
    font-size: 0.82rem;
    padding: 7px 6px;
    vertical-align: middle;
}

.transcript-sheet .table thead th,
[data-bs-theme="dark"] .transcript-sheet .table thead th {
    background-color: #0b1e36 !important;
    color: #ffffff !important;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border-color: #1e3a5f !important;
    padding: 8px 6px;
    vertical-align: middle;
}

.transcript-sheet .table tbody tr:nth-child(even) td,
[data-bs-theme="dark"] .transcript-sheet .table tbody tr:nth-child(even) td {
    background-color: #f8fafc !important;
}

.transcript-sheet .table tfoot td,
[data-bs-theme="dark"] .transcript-sheet .table tfoot td {
    background-color: #f1f5f9 !important;
    color: #0b1e36 !important;
    font-weight: 700;
    border-top: 2px solid #0b1e36 !important;
    padding: 8px 6px;
}

/* Academic Summary Box */
.transcript-summary-strip {
    background-color: #f8fafc !important;
    color: #0b1e36 !important;
    border: 1.5px solid #0b1e36;
    border-radius: 4px;
    padding: 10px 16px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.transcript-summary-item {
    text-align: center;
    flex: 1;
    min-width: 110px;
}

.transcript-summary-item .label {
    font-size: 0.67rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #475569 !important;
    display: block;
    margin-bottom: 2px;
    font-weight: 600;
}

.transcript-summary-item .value {
    font-size: 1.2rem;
    font-weight: 800;
    color: #0b1e36 !important;
    margin: 0;
}

.transcript-summary-item .value-primary {
    color: #1d4ed8 !important;
}

/* Grading System Reference Table */
.transcript-grading-card {
    background-color: #ffffff !important;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    padding: 8px 12px;
    font-size: 0.71rem;
    color: #0b1e36 !important;
}

.transcript-grading-table {
    margin: 0;
    font-size: 0.7rem;
}

.transcript-grading-table th,
.transcript-grading-table td,
[data-bs-theme="dark"] .transcript-grading-table th,
[data-bs-theme="dark"] .transcript-grading-table td {
    padding: 2px 5px !important;
    border-color: #e2e8f0 !important;
    color: #0b1e36 !important;
    background-color: #ffffff !important;
}

.transcript-grading-table th,
[data-bs-theme="dark"] .transcript-grading-table th {
    background-color: #f1f5f9 !important;
    color: #334155 !important;
    font-weight: 700;
}

/* Signatures & Certification */
.transcript-signatures {
    padding-top: 12px;
    text-align: center;
    color: #0b1e36 !important;
}

.transcript-sig-line {
    border-bottom: 1px solid #0b1e36;
    width: 75%;
    margin: 40px auto 5px auto;
}

/* Authentic Red Circular University Seal */
.transcript-stamp-seal {
    width: 98px;
    height: 98px;
    border: 2.5px double #b91c1c;
    border-radius: 50%;
    position: absolute;
    top: 24px;
    left: 56%;
    transform: translateX(-50%) rotate(-12deg);
    color: #b91c1c !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: rgba(185, 28, 28, 0.03) !important;
    box-shadow: 0 0 0 1px rgba(185, 28, 28, 0.2);
    pointer-events: none;
    user-select: none;
    z-index: 2;
}

.transcript-stamp-inner-ring {
    width: 86px;
    height: 86px;
    border: 1px dashed #b91c1c;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2px;
}

.transcript-stamp-univ {
    font-size: 0.49rem;
    font-weight: 800;
    letter-spacing: 0.3px;
    line-height: 1;
    text-transform: uppercase;
}

.transcript-stamp-star {
    font-size: 0.52rem;
    line-height: 1.1;
    margin: 1px 0;
}

.transcript-stamp-core {
    font-size: 0.54rem;
    font-weight: 900;
    letter-spacing: 0.5px;
    line-height: 1.1;
    border-top: 1px solid #b91c1c;
    border-bottom: 1px solid #b91c1c;
    padding: 1px 3px;
    margin: 1px 0;
    text-transform: uppercase;
}

.transcript-stamp-khmer {
    font-size: 0.46rem;
    font-family: 'Kantumruy Pro', sans-serif;
    font-weight: 700;
    line-height: 1;
}

.transcript-qr-badge {
    background-color: #ffffff !important;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    padding: 6px 10px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #0b1e36 !important;
}

.transcript-sheet .text-dark,
[data-bs-theme="dark"] .transcript-sheet .text-dark {
    color: #0b1e36 !important;
}

.transcript-sheet .text-muted,
[data-bs-theme="dark"] .transcript-sheet .text-muted {
    color: #64748b !important;
}

.transcript-sheet .text-secondary,
[data-bs-theme="dark"] .transcript-sheet .text-secondary {
    color: #475569 !important;
}

/* Print Layout */
@media print {
    @page {
        size: A4 portrait;
        margin: 6mm 8mm;
    }
    body {
        background-color: #ffffff !important;
        color: #000000 !important;
        font-size: 11pt !important;
    }
    .navbar, footer, .no-print, .btn, .breadcrumb, .alert, .theme-toggle, .toast-container-bbu, #back-to-top {
        display: none !important;
    }
    .container, .container-fluid {
        max-width: 100% !important;
        width: 100% !important;
        padding: 0 !important;
        margin: 0 !important;
    }
    .transcript-sheet {
        border: 1.5px solid #0b1e36 !important;
        outline: 0.5px solid #0b1e36 !important;
        outline-offset: -4px !important;
        box-shadow: none !important;
        padding: 6mm 8mm !important;
        margin: 0 !important;
        max-width: 100% !important;
        page-break-after: avoid;
    }
    .transcript-table thead th {
        background-color: #0b1e36 !important;
        color: #ffffff !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
    .transcript-summary-strip {
        background-color: #f8fafc !important;
        color: #0b1e36 !important;
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
    .transcript-stamp-seal {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
    tr, .transcript-signatures, .transcript-grading-card, .transcript-profile-box {
        page-break-inside: avoid;
    }
}

/* ------------------------------------------------------------------------------
   18. Micro-Interactions, Toast Alerts, Back-to-Top
   ------------------------------------------------------------------------------ */
.toast-container-bbu {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1090;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 380px;
}

@media (max-width: 575.98px) {
    .toast-container-bbu {
        top: 20px;
        bottom: auto;
        left: 20px;
        right: 20px;
        max-width: none;
    }
}

.toast-bbu {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-hover);
    padding: 1rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 12px;
    animation: toastSlideIn 0.25s ease-out;
}

@keyframes toastSlideIn {
    from { opacity: 0; transform: translateY(14px); }
    to { opacity: 1; transform: translateY(0); }
}

.back-to-top-btn {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-pill);
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    color: var(--bbu-muted);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1050;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(14px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s cubic-bezier(0.34, 1.4, 0.64, 1), background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, visibility 0.25s;
}

.back-to-top-btn.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top-btn:hover {
    background-image: var(--grad-primary);
    border-color: transparent;
    color: #ffffff;
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-primary);
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ------------------------------------------------------------------------------
   19. Detail Page, Digital ID Card, Transcript & Modal Enhancements
   ------------------------------------------------------------------------------ */
.detail-hero-content {
    padding: 0 1.5rem 1.5rem 1.5rem;
}

.detail-sticky-sidebar {
    position: sticky;
    top: 90px;
}

.id-card-wrapper {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.id-card-header {
    background: linear-gradient(135deg, var(--bbu-navy) 0%, var(--bbu-navy-2) 100%);
    border-bottom: 3px solid var(--bbu-gold);
    padding: 1.1rem;
    color: #ffffff;
    text-align: center;
}

.id-card-body {
    padding: 1.5rem;
    text-align: center;
    background: var(--bbu-surface);
}

.id-card-photo {
    width: 95px;
    height: 110px;
    object-fit: cover;
    border-radius: var(--radius-input);
    border: 2px solid var(--bbu-primary);
    box-shadow: var(--shadow-sm);
}

.id-card-photo-placeholder {
    width: 95px;
    height: 110px;
    border-radius: var(--radius-input);
    background: var(--bbu-surface-subtle);
    color: var(--bbu-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    border: 2px solid var(--bbu-border);
}

.id-card-badge {
    background: var(--bbu-surface-subtle);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-input);
    padding: 0.65rem;
    margin-bottom: 1rem;
}

.id-card-barcode-box {
    background: var(--bbu-surface-subtle);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-input);
    padding: 0.5rem;
    text-align: center;
}

.id-card-barcode {
    font-family: 'Courier New', Courier, monospace;
    letter-spacing: 5px;
    font-size: 1.15rem;
    color: var(--bbu-navy);
    font-weight: 700;
    user-select: none;
}

[data-bs-theme="dark"] .id-card-barcode {
    color: #ffffff;
}

/* Transcript Certificate */
.transcript-seal {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--bbu-navy);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--bbu-navy);
    background: var(--bbu-surface);
}

.transcript-header-title {
    color: var(--bbu-navy);
    font-weight: 700;
}

.transcript-table-header {
    background-color: var(--bbu-navy);
    color: #ffffff;
}

.transcript-signature-space {
    height: 55px;
}

.transcript-signature-line {
    border-top: 1.5px solid var(--bbu-navy);
    width: 190px;
    margin-left: auto;
    margin-right: auto;
}

/* Progress Bars */
.progress-bbu {
    height: 8px;
    border-radius: var(--radius-pill);
    background-color: var(--bbu-border);
    overflow: hidden;
    margin-top: 0.4rem;
}

.progress-bbu-bar {
    height: 100%;
    border-radius: var(--radius-pill);
    transition: width 0.3s ease;
}

.progress-bbu-bar-success { background-color: var(--bbu-success); }
.progress-bbu-bar-primary { background-color: var(--bbu-primary); }
.progress-bbu-bar-warning { background-color: var(--bbu-warning); }
.progress-bbu-bar-danger  { background-color: var(--bbu-danger); }

.progress-bbu-sm {
    height: 5px;
    max-width: 90px;
    margin-top: 0;
}

/* Confirmation Deletion Modal / Panel */
.delete-icon-circle {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background-color: var(--bbu-danger-soft);
    color: var(--bbu-danger);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.delete-summary-panel {
    background-color: var(--bbu-surface-subtle);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    padding: 1.25rem;
    text-align: left;
    margin-bottom: 1.5rem;
}

.delete-summary-label {
    font-size: 0.78rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--bbu-muted);
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 0.35rem;
}

/* Helpers */
.col-label-fixed-120 { width: 120px; }
.col-label-fixed-140 { width: 140px; }

/* Avatar Preview Box in Forms */
.avatar-preview-box {
    width: 75px;
    height: 75px;
    flex-shrink: 0;
    border-radius: var(--radius-input);
    border: 1.5px dashed var(--bbu-border);
    background-color: var(--bbu-surface-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.avatar-preview-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-preview-box .avatar-placeholder {
    color: var(--bbu-muted);
}

.d-none-initial {
    display: none;
}

/* Mobile Sticky Action Bar for Forms */
@media (max-width: 767.98px) {
    .form-mobile-action-bar {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--bbu-surface);
        padding: 0.75rem 1rem;
        box-shadow: 0 -4px 16px rgba(16, 24, 40, 0.08);
        border-top: 1px solid var(--bbu-border);
        z-index: 1040;
        display: flex;
        gap: 0.5rem;
    }
}

/* Tom Select Full Theme Integration */
.ts-control {
    border-radius: var(--radius-input) !important;
    border: 1.5px solid var(--bbu-border) !important;
    padding: 0.65rem 1rem !important;
    font-size: 0.95rem !important;
    background-color: var(--bbu-surface) !important;
    color: var(--bbu-text) !important;
    box-shadow: none !important;
    transition: border-color 0.18s ease, box-shadow 0.18s ease !important;
}

.ts-control.focus {
    border-color: var(--bbu-primary) !important;
    box-shadow: var(--shadow-focus) !important;
}

.ts-dropdown {
    border-radius: var(--radius-card) !important;
    box-shadow: var(--shadow-hover) !important;
    border: 1px solid var(--bbu-border) !important;
    background-color: var(--bbu-surface) !important;
    z-index: 1055 !important;
    overflow: hidden;
}

.ts-dropdown .option {
    padding: 0.65rem 1rem !important;
    font-size: 0.92rem !important;
    color: var(--bbu-text) !important;
    transition: background-color 0.15s ease !important;
}

.ts-dropdown .active {
    background-color: var(--bbu-primary) !important;
    color: #ffffff !important;
}

.ts-dropdown .highlight {
    background-color: var(--bbu-gold-soft) !important;
    color: var(--bbu-navy) !important;
    font-weight: 700 !important;
    padding: 0 3px !important;
    border-radius: 3px !important;
}

.search-hint {
    font-size: 0.82rem;
    color: var(--bbu-muted);
    margin-top: 0.35rem;
}

/* ------------------------------------------------------------------------------
   20. Public Landing Page Styles (Prompt 9) & Visual Analytics
   ------------------------------------------------------------------------------ */
/* --- Landing Hero: Deep Aurora Banner --- */
.landing-hero {
    padding: 4.75rem 2rem;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(70% 90% at 100% 0%, rgba(245, 158, 11, 0.22) 0%, transparent 55%),
        radial-gradient(80% 110% at -10% 110%, rgba(45, 92, 246, 0.55) 0%, transparent 60%),
        var(--grad-ink);
    background-size: 100% 100%, 100% 100%, 180% 180%;
    animation: heroAurora 18s ease-in-out infinite alternate;
    border-radius: calc(var(--radius-card) + 6px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 28px 70px -24px rgba(10, 24, 48, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.14);
    margin-bottom: 3rem;
    color: #ffffff;
}

.landing-hero h1,
.landing-hero h2,
.landing-hero h3 {
    color: #ffffff !important;
}

.landing-hero .text-dark,
.landing-hero .text-primary {
    color: #ffffff !important;
}

.landing-hero .lead,
.landing-hero .text-muted {
    color: rgba(226, 236, 255, 0.82) !important;
}

.landing-hero .landing-highlight {
    background: linear-gradient(120deg, #fcd34d 0%, #fbbf24 45%, #f59e0b 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: #fbbf24;
}

.landing-shape-decor {
    width: 340px;
    height: 340px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(45, 92, 246, 0.5) 0%, rgba(59, 130, 246, 0.12) 55%, transparent 75%);
    position: absolute;
    left: -90px;
    bottom: -130px;
    filter: blur(6px);
    opacity: 0.9;
    z-index: 0;
    pointer-events: none;
    animation: heroOrbFloat 11s ease-in-out infinite alternate;
}

.landing-shape-decor-2 {
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(245, 158, 11, 0.35) 0%, transparent 70%);
    position: absolute;
    right: -70px;
    top: -80px;
    z-index: 0;
    pointer-events: none;
    animation: heroOrbFloat 13s ease-in-out infinite alternate-reverse;
}

/* Hero Glass Visual Card & Floating Chips */
.landing-glass-card {
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: calc(var(--radius-card) + 4px);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    padding: 2rem 1.75rem;
    box-shadow: 0 24px 60px -20px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.18);
    position: relative;
    color: #ffffff;
    animation: floatSoft 6.5s ease-in-out infinite;
}

.landing-glass-card .text-dark,
.landing-glass-card h5 {
    color: #ffffff !important;
}

.landing-glass-card .text-muted {
    color: rgba(226, 236, 255, 0.78) !important;
}

.landing-float-chip {
    position: absolute;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.95);
    color: #0a1830;
    border-radius: var(--radius-pill);
    padding: 0.5rem 0.95rem;
    font-size: 0.8rem;
    font-weight: 700;
    box-shadow: 0 16px 36px -12px rgba(0, 0, 0, 0.45);
    animation: floatSoft 5.5s ease-in-out infinite;
    z-index: 3;
}

[data-bs-theme="dark"] .landing-float-chip {
    background: #f8fafc;
}

.landing-float-chip.chip-1 {
    top: 6%;
    left: -42px;
    animation-delay: 0.4s;
}

.landing-float-chip.chip-2 {
    bottom: -18px;
    right: -22px;
    animation-delay: 1.2s;
}

@keyframes floatSoft {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@media (prefers-reduced-motion: reduce) {
    .landing-hero, .landing-glass-card, .landing-shape-decor, .landing-shape-decor-2, .landing-float-chip {
        animation: none !important;
    }
}

/* --- Landing Stats Strip --- */
.landing-stat-strip {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    padding: 2rem 1.5rem;
    margin-bottom: 3.5rem;
    position: relative;
    overflow: hidden;
}

.landing-stat-strip::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background-image: linear-gradient(90deg, #2d5cf6, #8b5cf6, #f59e0b, #10b981);
}

.landing-stat-icon {
    width: 46px;
    height: 46px;
    border-radius: 13px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    color: #ffffff;
    margin-bottom: 0.75rem;
}

.landing-stat-icon.tint-blue   { background-image: linear-gradient(135deg, #60a5fa, #2d5cf6 60%, #1d3fd0); box-shadow: 0 8px 18px -6px rgba(45, 92, 246, 0.55); }
.landing-stat-icon.tint-green  { background-image: linear-gradient(135deg, #34d399, #10b981 55%, #047857); box-shadow: 0 8px 18px -6px rgba(16, 185, 129, 0.5); }
.landing-stat-icon.tint-amber  { background-image: linear-gradient(135deg, #fcd34d, #f59e0b 55%, #d97706); box-shadow: 0 8px 18px -6px rgba(245, 158, 11, 0.5); }
.landing-stat-icon.tint-violet { background-image: linear-gradient(135deg, #c084fc, #8b5cf6 55%, #6d28d9); box-shadow: 0 8px 18px -6px rgba(139, 92, 246, 0.5); }

.landing-stat-number {
    font-size: 2.3rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 0.15rem;
}

.landing-stat-number.num-blue   { color: #2d5cf6; }
.landing-stat-number.num-green  { color: #10b981; }
.landing-stat-number.num-amber  { color: #d97706; }
.landing-stat-number.num-violet { color: #8b5cf6; }

[data-bs-theme="dark"] .landing-stat-number.num-blue   { color: #60a5fa; }
[data-bs-theme="dark"] .landing-stat-number.num-green  { color: #34d399; }
[data-bs-theme="dark"] .landing-stat-number.num-amber  { color: #fbbf24; }
[data-bs-theme="dark"] .landing-stat-number.num-violet { color: #c084fc; }

/* --- Section Eyebrow Headings --- */
.landing-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--bbu-primary);
    background: var(--bbu-primary-soft);
    border: 1px solid rgba(45, 92, 246, 0.18);
    border-radius: var(--radius-pill);
    padding: 0.35rem 0.95rem;
    margin-bottom: 0.9rem;
}

[data-bs-theme="dark"] .landing-eyebrow {
    color: #60a5fa;
    border-color: rgba(59, 130, 246, 0.3);
}

/* --- Landing Feature Cards --- */
.landing-feature-card {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    padding: 1.85rem;
    box-shadow: var(--shadow-sm);
    height: 100%;
    position: relative;
    overflow: hidden;
    transition: transform 0.25s cubic-bezier(0.34, 1.4, 0.64, 1), box-shadow 0.25s ease, border-color 0.25s ease;
}

.landing-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-image: linear-gradient(90deg, #2d5cf6, #8b5cf6, #f59e0b);
    opacity: 0;
    transform: scaleX(0.35);
    transform-origin: left;
    transition: opacity 0.25s ease, transform 0.35s ease;
}

.landing-feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(45, 92, 246, 0.4);
}

.landing-feature-card:hover::before {
    opacity: 1;
    transform: scaleX(1);
}

.landing-icon-circle {
    width: 54px;
    height: 54px;
    border-radius: 15px;
    background-image: linear-gradient(135deg, #60a5fa, #2d5cf6 60%, #1d3fd0);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 1.25rem;
    box-shadow: 0 10px 22px -8px rgba(45, 92, 246, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.28);
    transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.landing-feature-card:hover .landing-icon-circle {
    transform: scale(1.08) rotate(-5deg);
}

/* Feature accent color variants */
.landing-feature-card.feat-green .landing-icon-circle {
    background-image: linear-gradient(135deg, #34d399, #10b981 55%, #047857);
    box-shadow: 0 10px 22px -8px rgba(16, 185, 129, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}
.landing-feature-card.feat-amber .landing-icon-circle {
    background-image: linear-gradient(135deg, #fcd34d, #f59e0b 55%, #d97706);
    box-shadow: 0 10px 22px -8px rgba(245, 158, 11, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.32);
}
.landing-feature-card.feat-violet .landing-icon-circle {
    background-image: linear-gradient(135deg, #c084fc, #8b5cf6 55%, #6d28d9);
    box-shadow: 0 10px 22px -8px rgba(139, 92, 246, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}
.landing-feature-card.feat-cyan .landing-icon-circle {
    background-image: linear-gradient(135deg, #22d3ee, #06b6d4 55%, #0e7490);
    box-shadow: 0 10px 22px -8px rgba(6, 182, 212, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}
.landing-feature-card.feat-rose .landing-icon-circle {
    background-image: linear-gradient(135deg, #fb7185, #f43f5e 55%, #be123c);
    box-shadow: 0 10px 22px -8px rgba(244, 63, 94, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.28);
}

.landing-feature-card.feat-green::before  { background-image: linear-gradient(90deg, #10b981, #34d399, transparent); }
.landing-feature-card.feat-amber::before  { background-image: linear-gradient(90deg, #f59e0b, #fcd34d, transparent); }
.landing-feature-card.feat-violet::before { background-image: linear-gradient(90deg, #8b5cf6, #c084fc, transparent); }
.landing-feature-card.feat-cyan::before   { background-image: linear-gradient(90deg, #06b6d4, #22d3ee, transparent); }
.landing-feature-card.feat-rose::before   { background-image: linear-gradient(90deg, #f43f5e, #fb7185, transparent); }

.landing-feature-card.feat-green:hover  { border-color: rgba(16, 185, 129, 0.4); }
.landing-feature-card.feat-amber:hover  { border-color: rgba(245, 158, 11, 0.4); }
.landing-feature-card.feat-violet:hover { border-color: rgba(139, 92, 246, 0.4); }
.landing-feature-card.feat-cyan:hover   { border-color: rgba(6, 182, 212, 0.4); }
.landing-feature-card.feat-rose:hover   { border-color: rgba(244, 63, 94, 0.4); }

/* --- Landing Step Cards with Connector --- */
.landing-steps-row {
    position: relative;
}

.landing-steps-row::before {
    content: '';
    position: absolute;
    top: 44px;
    left: 12%;
    right: 12%;
    height: 2px;
    background-image: linear-gradient(90deg, rgba(45, 92, 246, 0.4), rgba(245, 158, 11, 0.4), rgba(16, 185, 129, 0.4));
    border-radius: 2px;
    z-index: 0;
}

@media (max-width: 767.98px) {
    .landing-steps-row::before { display: none; }
}

.landing-step-card {
    background: var(--bbu-surface);
    border: 1px solid var(--bbu-border);
    border-radius: var(--radius-card);
    padding: 2rem 1.5rem;
    text-align: center;
    height: 100%;
    box-shadow: var(--shadow-sm);
    position: relative;
    z-index: 1;
    transition: transform 0.25s cubic-bezier(0.34, 1.4, 0.64, 1), box-shadow 0.25s ease, border-color 0.25s ease;
}

.landing-step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(45, 92, 246, 0.35);
}

.landing-step-num {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-pill);
    background-image: var(--grad-primary);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.15rem;
    margin-bottom: 1rem;
    box-shadow: 0 10px 22px -8px rgba(45, 92, 246, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    border: 3px solid var(--bbu-surface);
    outline: 1.5px solid rgba(45, 92, 246, 0.25);
}

/* --- Landing CTA Banner --- */
.landing-cta-banner {
    background:
        radial-gradient(80% 130% at 100% 0%, rgba(245, 158, 11, 0.25) 0%, transparent 55%),
        radial-gradient(90% 140% at 0% 100%, rgba(45, 92, 246, 0.45) 0%, transparent 60%),
        var(--grad-ink);
    border-radius: calc(var(--radius-card) + 6px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 26px 60px -22px rgba(10, 24, 48, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.landing-cta-banner h3 {
    color: #ffffff !important;
}

.chart-container-bbu {
    height: 260px;
    position: relative;
}

.col-avatar-width {
    width: 65px;
}

/* Width & Layout Utility Classes */
.avatar-xs { width: 28px; height: 28px; font-size: 0.75rem; }
.bbu-crest-sm { width: 32px; height: 32px; font-size: 0.95rem; }
.footer-desc-width { max-width: 360px; }

.col-w-50 { width: 50px; }
.col-w-90 { width: 90px; }
.col-w-100 { width: 100px; }
.col-w-110 { width: 110px; }
.col-w-120 { width: 120px; }
.col-w-130 { width: 130px; }
.col-w-140 { width: 140px; }

.col-min-120 { min-width: 120px; }
.col-min-130 { min-width: 130px; }
.col-min-140 { min-width: 140px; }
.col-min-150 { min-width: 150px; }
.col-min-160 { min-width: 160px; }
.col-min-180 { min-width: 180px; }

.pct-44 { width: 44%; }
.pct-18 { width: 18%; }
.pct-14 { width: 14%; }
.pct-12 { width: 12%; }

.search-input-max { max-width: 320px; }

/* ------------------------------------------------------------------------------
   21. Official BBU University Logo Styles
   ------------------------------------------------------------------------------ */
.bbu-navbar-logo {
    height: 42px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(16, 24, 40, 0.12));
    transition: transform 0.2s ease;
}

.navbar-brand-bbu:hover .bbu-navbar-logo {
    transform: scale(1.05);
}

.bbu-footer-logo {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.bbu-auth-logo {
    height: 90px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.25));
}

.bbu-idcard-logo {
    height: 38px;
    width: auto;
    object-fit: contain;
}

.bbu-transcript-logo {
    height: 75px;
    width: auto;
    object-fit: contain;
}

.bbu-landing-logo {
    height: 130px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 8px 20px rgba(11, 30, 54, 0.18));
}

.bbu-hero-logo {
    height: 52px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.25));
}

.fs-xs {
    font-size: 0.72rem;
}

.letter-spacing-tight {
    letter-spacing: -0.02em;
}

/* ------------------------------------------------------------------------------
   22. Keyboard Shortcut Badges & Print Formatting
   ------------------------------------------------------------------------------ */
.shortcut-kbd {
    background-color: var(--bbu-surface-subtle);
    border: 1px solid var(--bbu-border);
    color: var(--bbu-muted);
    font-size: 0.72rem;
    font-family: inherit;
    font-weight: 700;
    padding: 0.15rem 0.45rem;
    border-radius: 6px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

[data-bs-theme="dark"] .shortcut-kbd {
    background-color: #1b2740;
    border-color: #2e3d5c;
    color: #a8bad4;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

@media print {
    body {
        background-color: #ffffff !important;
        color: #000000 !important;
    }
    .navbar-bbu-astra,
    .footer-bbu,
    .no-print,
    .toolbar-card,
    .back-to-top-btn,
    .btn,
    .action-btn-group,
    .alert {
        display: none !important;
    }
    .card-bbu {
        box-shadow: none !important;
        border: 1px solid #e2e8f0 !important;
        page-break-inside: avoid;
    }
    .table-bbu {
        width: 100% !important;
        page-break-inside: auto;
    }
    .table-bbu tr {
        page-break-inside: avoid;
        page-break-after: auto;
    }
    .transcript-sheet {
        box-shadow: none !important;
        border: none !important;
        padding: 0 !important;
        margin: 0 !important;
        width: 100% !important;
    }
    .signature-block {
        page-break-inside: avoid;
    }
}

/* ------------------------------------------------------------------------------
   23. Premium Polish Layer (v6) — Gradients, Reveal Animations, Fine Details
   ------------------------------------------------------------------------------ */

/* Scroll Progress Bar (injected by main.js) */
.scroll-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-image: linear-gradient(90deg, #2d5cf6 0%, #8b5cf6 50%, #f59e0b 100%);
    transform: scaleX(0);
    transform-origin: left;
    z-index: 1080;
    pointer-events: none;
    box-shadow: 0 0 12px rgba(45, 92, 246, 0.6);
}

/* Navbar Elevated State on Scroll (toggled by main.js) */
.navbar-bbu-astra.navbar-scrolled {
    background-color: rgba(255, 255, 255, 0.86) !important;
    box-shadow: 0 12px 32px -14px rgba(13, 21, 38, 0.22);
}

[data-bs-theme="dark"] .navbar-bbu-astra.navbar-scrolled {
    background-color: rgba(10, 14, 24, 0.86) !important;
    box-shadow: 0 12px 32px -12px rgba(0, 0, 0, 0.7);
}

/* Copy Button Success State (toggled by main.js) */
.is-copied {
    background-color: var(--bbu-success-soft) !important;
    border-color: rgba(18, 138, 77, 0.45) !important;
    color: var(--bbu-success) !important;
    box-shadow: 0 6px 16px -6px rgba(18, 138, 77, 0.45) !important;
}

@media print {
    .scroll-progress-bar {
        display: none !important;
    }
}

/* Brand Gradient Text Utility */
.text-gradient {
    background-image: var(--grad-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--bbu-primary);
}

.text-gradient-gold {
    background-image: var(--grad-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--bbu-gold);
}

/* Branded Text Selection */
::selection {
    background-color: rgba(45, 92, 246, 0.22);
    color: inherit;
}

[data-bs-theme="dark"] ::selection {
    background-color: rgba(96, 165, 250, 0.32);
    color: #ffffff;
}

/* Navbar gradient hairline + brand badge glow */
.navbar-bbu-astra::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 1px;
    background-image: linear-gradient(90deg, transparent, rgba(45, 92, 246, 0.45) 30%, rgba(245, 158, 11, 0.45) 70%, transparent);
    pointer-events: none;
}

.navbar-bbu-astra {
    position: sticky;
}

.navbar-brand-bbu:hover .bbu-logo-badge {
    border-color: transparent;
    background:
        linear-gradient(var(--bbu-surface), var(--bbu-surface)) padding-box,
        var(--grad-primary) border-box;
    border: 1.5px solid transparent;
    box-shadow: 0 6px 18px -6px rgba(45, 92, 246, 0.55);
}

/* Academic term pill — subtle gradient */
.badge-academic-term {
    background-image: linear-gradient(135deg, #fff7e6 0%, #ffedc9 100%);
    border-color: rgba(245, 158, 11, 0.35);
}

[data-bs-theme="dark"] .badge-academic-term {
    background-image: linear-gradient(135deg, rgba(251, 191, 36, 0.22), rgba(245, 158, 11, 0.14));
    color: #fcd34d;
    border-color: rgba(251, 191, 36, 0.35);
}

/* Page header accent bar */
.page-header-title {
    position: relative;
    padding-left: 0.9rem;
}

.page-header-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.18em;
    bottom: 0.18em;
    width: 5px;
    border-radius: 999px;
    background-image: var(--grad-primary);
    box-shadow: 0 2px 8px -2px rgba(45, 92, 246, 0.6);
}

/* Rounded focus ring for accessibility on all buttons */
.btn:focus-visible,
.action-btn:focus-visible,
.btn-theme-toggle:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus) !important;
}

/* Elegant card top sheen on hover */
.card-bbu {
    position: relative;
}

.card-bbu::after {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
    pointer-events: none;
}

[data-bs-theme="dark"] .card-bbu::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
}

/* Table row hover accent */
.table-bbu tbody tr {
    transition: background-color 0.15s ease, box-shadow 0.15s ease;
}

.table-bbu tbody tr:hover {
    box-shadow: inset 3px 0 0 var(--bbu-primary);
}

/* Scroll Reveal Animations (activated by main.js / inline observer) */
.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1), transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: opacity, transform;
}

.reveal.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }
.reveal-delay-5 { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* Glass Badges for Dark Hero Banners */
.badge-on-dark {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #e2ecff;
    border-radius: var(--radius-pill);
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.badge-on-dark-gold {
    background: rgba(245, 158, 11, 0.16);
    border-color: rgba(245, 158, 11, 0.4);
    color: #fcd34d;
}

.landing-hero .hero-trust-row {
    color: rgba(226, 236, 255, 0.72);
    font-size: 0.85rem;
}

.landing-hero .hero-trust-row .trust-item {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.landing-hero .hero-trust-row i {
    color: #7fa8ff;
}

.landing-visual-col {
    max-width: 400px;
    position: relative;
}

.bbu-logo-ring {
    width: 168px;
    height: 168px;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 25%, rgba(255, 255, 255, 0.24), rgba(255, 255, 255, 0.06) 62%);
    border: 1px solid rgba(255, 255, 255, 0.24);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 44px -18px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    padding: 16px;
}

.bbu-logo-ring .bbu-landing-logo {
    height: 122px;
}

.small-icon {
    font-size: 0.5rem;
    vertical-align: middle;
}

/* Landing section spacing helper */
.landing-section {
    margin-bottom: 4.5rem;
}

.landing-section-title {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

/* Soft tissue background for public pages */
body.bbu-public-bg {
    background-image: radial-gradient(60% 45% at 100% 0%, rgba(45, 92, 246, 0.07) 0%, transparent 60%),
                      radial-gradient(50% 40% at 0% 100%, rgba(245, 158, 11, 0.05) 0%, transparent 60%);
    background-attachment: fixed;
}

/* Smooth anchor scrolling for public landing navigation */
html {
    scroll-behavior: smooth;
}

section[id] {
    scroll-margin-top: 96px;
}

[data-bs-theme="dark"] body.bbu-public-bg {
    background-image: radial-gradient(60% 45% at 100% 0%, rgba(45, 92, 246, 0.12) 0%, transparent 60%),
                      radial-gradient(50% 40% at 0% 100%, rgba(245, 158, 11, 0.07) 0%, transparent 60%);
}

/* Light-mode scrollbar refinement */
[data-bs-theme="light"] ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

[data-bs-theme="light"] ::-webkit-scrollbar-track {
    background: var(--bbu-bg);
}

[data-bs-theme="light"] ::-webkit-scrollbar-thumb {
    background: #c6d2e4;
    border-radius: 999px;
    border: 2px solid var(--bbu-bg);
}

[data-bs-theme="light"] ::-webkit-scrollbar-thumb:hover {
    background: #9fb1cb;
}

/* Empty chart illustration badge (dashboard analytics) */
.empty-chart-icon {
    width: 52px;
    height: 52px;
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
}

[data-bs-theme="dark"] .empty-chart-icon {
    background: rgba(16, 185, 129, 0.18);
    color: #34d399;
}

/* KPI trend chips (30-day deltas on dashboard cards) */
.trend-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 0.22rem 0.55rem;
    border-radius: 999px;
    white-space: nowrap;
}

.trend-chip.trend-up {
    background: rgba(16, 185, 129, 0.12);
    color: #059669;
}

.trend-chip.trend-down {
    background: rgba(220, 53, 69, 0.12);
    color: #dc3545;
}

.trend-chip.trend-flat {
    background: rgba(108, 117, 125, 0.12);
    color: #6c757d;
}

[data-bs-theme="dark"] .trend-chip.trend-up {
    background: rgba(52, 211, 153, 0.16);
    color: #34d399;
}

[data-bs-theme="dark"] .trend-chip.trend-down {
    background: rgba(248, 113, 113, 0.16);
    color: #f87171;
}

[data-bs-theme="dark"] .trend-chip.trend-flat {
    background: rgba(148, 163, 184, 0.16);
    color: #94a3b8;
}

/* Dashboard quick-insight lists (Needs Attention / Dean's List / Recent Enrollments) */
.min-w-0 {
    min-width: 0;
}

/* Bilingual card headers: Khmer subline under the English title */
.card-bbu-header .card-header-kh {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--bbu-muted);
    line-height: 1.4 !important;
    letter-spacing: normal !important;
    margin-top: 2px;
}

.attention-item,
.dean-item,
.enrollment-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.55rem 0.6rem;
    border-radius: 0.65rem;
    text-decoration: none;
    transition: background-color 0.15s ease, transform 0.15s ease;
}

.attention-item:hover,
.dean-item:hover,
.enrollment-item:hover {
    background: rgba(45, 92, 246, 0.06);
    transform: translateX(2px);
}

[data-bs-theme="dark"] .attention-item:hover,
[data-bs-theme="dark"] .dean-item:hover,
[data-bs-theme="dark"] .enrollment-item:hover {
    background: rgba(148, 163, 184, 0.1);
}

.attention-item + .attention-item,
.dean-item + .dean-item,
.enrollment-item + .enrollment-item {
    border-top: 1px dashed var(--bbu-border);
}

.attention-icon {
    width: 36px;
    height: 36px;
    border-radius: 0.6rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.85rem;
}

.attention-icon-amber {
    background: rgba(245, 158, 11, 0.14);
    color: #b45309;
}

.attention-icon-blue {
    background: rgba(45, 92, 246, 0.12);
    color: #2d5cf6;
}

.attention-icon-slate {
    background: rgba(100, 116, 139, 0.14);
    color: #475569;
}

[data-bs-theme="dark"] .attention-icon-amber {
    background: rgba(251, 191, 36, 0.16);
    color: #fbbf24;
}

[data-bs-theme="dark"] .attention-icon-blue {
    background: rgba(59, 130, 246, 0.18);
    color: #60a5fa;
}

[data-bs-theme="dark"] .attention-icon-slate {
    background: rgba(148, 163, 184, 0.16);
    color: #cbd5e1;
}

.attention-icon-green {
    background: rgba(16, 185, 129, 0.14);
    color: #059669;
}

[data-bs-theme="dark"] .attention-icon-green {
    background: rgba(52, 211, 153, 0.16);
    color: #34d399;
}

.attention-item-done {
    cursor: default;
}

.attention-item-done:hover {
    background: transparent;
    transform: none;
}

.attention-list {
    flex-grow: 1;
    justify-content: space-around;
}

.dean-rank {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 800;
    flex-shrink: 0;
}

.dean-rank-1 {
    background: linear-gradient(135deg, #fbbf24, #d97706);
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(217, 119, 6, 0.35);
}

.dean-rank-2 {
    background: linear-gradient(135deg, #e2e8f0, #94a3b8);
    color: #1e293b;
    box-shadow: 0 2px 6px rgba(148, 163, 184, 0.35);
}

.dean-rank-3 {
    background: linear-gradient(135deg, #f59e0b, #b45309);
    color: #ffffff;
    box-shadow: 0 2px 6px rgba(180, 83, 9, 0.3);
}

.dean-rank-plain {
    background: rgba(100, 116, 139, 0.12);
    color: #64748b;
}

[data-bs-theme="dark"] .dean-rank-plain {
    background: rgba(148, 163, 184, 0.18);
    color: #cbd5e1;
}

/* Public QR verification page */
.verify-hero {
    background: linear-gradient(135deg, #0a1830 0%, #1d3a6e 55%, #2d5cf6 100%);
}

.verify-seal {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: -48px auto 0;
    background: #ffffff;
    box-shadow: 0 10px 30px rgba(10, 24, 48, 0.18);
    font-size: 2.6rem;
    position: relative;
    z-index: 2;
}

.verify-seal.is-verified {
    color: #16a34a;
}

.verify-seal.is-failed {
    color: #dc3545;
}

.verify-seal::after {
    content: "";
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    border: 3px solid currentColor;
    opacity: 0.25;
    animation: verify-pulse 2s ease-out infinite;
}

@keyframes verify-pulse {
    0% {
        transform: scale(0.92);
        opacity: 0.35;
    }
    70% {
        transform: scale(1.08);
        opacity: 0;
    }
    100% {
        transform: scale(1.08);
        opacity: 0;
    }
}

[data-bs-theme="dark"] .verify-seal {
    background: #1a2233;
}