/**
 * Coachy.tn - Main Stylesheet
 * E-Learning Platform - Tunisie
 * Enhanced Production Build
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    --primary-color: #f5a623;
    --primary-dark: #d4891d;
    --primary-light: #ffc966;
    --primary-rgb: 245, 166, 35;
    --secondary-color: #1a1a1a;
    --secondary-light: #2d2d2d;
    --success-color: #10b981;
    --success-rgb: 16, 185, 129;
    --danger-color: #ef4444;
    --danger-rgb: 239, 68, 68;
    --warning-color: #f59e0b;
    --warning-rgb: 245, 158, 11;
    --info-color: #3b82f6;
    --info-rgb: 59, 130, 246;
    --light-bg: #f8fafc;
    --dark-bg: #0f172a;
    --body-bg: #fff;
    --card-bg: #fff;
    --sidebar-bg: #fff;
    --input-bg: #fff;
    --text-color: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --heading-color: #1a1a1a;
    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --border-radius-pill: 50px;
    --box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --box-shadow-md:
        0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --box-shadow-lg:
        0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --box-shadow-xl:
        0 20px 40px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-width: 260px;
    --navbar-height: 64px;
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 5rem;
    --fs-xs: 0.75rem;
    --fs-sm: 0.8125rem;
    --fs-base: 0.875rem;
    --fs-md: 0.9375rem;
    --fs-lg: 1rem;
    --fs-xl: 1.125rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 2rem;
    --fs-4xl: 2.5rem;
    --fs-5xl: 3.2rem;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-sidebar: 1000;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-toast: 1080;
    --z-top: 9999;
    --font-family:
        "Spartan", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        sans-serif;
}

/* ========================================
   Dark Mode Variables
   ======================================== */
[data-theme="dark"] {
    --body-bg: #0f172a;
    --card-bg: #1e293b;
    --sidebar-bg: #0f172a;
    --input-bg: #1e293b;
    --light-bg: #1e293b;
    --text-color: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --heading-color: #f1f5f9;
    --border-color: #334155;
    --box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --box-shadow-md:
        0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --box-shadow-lg:
        0 10px 25px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --box-shadow-xl:
        0 20px 40px -5px rgba(0, 0, 0, 0.6), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] body {
    background-color: var(--body-bg);
    color: var(--text-color);
}
[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
    color: var(--heading-color);
}
[data-theme="dark"] .card,
[data-theme="dark"] .stat-card {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .card-header,
[data-theme="dark"] .card-footer {
    background-color: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .navbar {
    background: rgba(15, 23, 42, 0.98) !important;
    border-bottom-color: var(--border-color);
}
[data-theme="dark"] .nav-link {
    color: var(--text-secondary);
}
[data-theme="dark"] .nav-link:hover,
[data-theme="dark"] .nav-link.active {
    color: var(--primary-color);
}
[data-theme="dark"] .dashboard-sidebar {
    background: var(--sidebar-bg);
    border-right-color: var(--border-color);
}
[data-theme="dark"] .dashboard-sidebar .sidebar-brand {
    border-bottom-color: var(--border-color);
}
[data-theme="dark"] .dashboard-sidebar .sidebar-nav .nav-link {
    color: var(--text-secondary);
}
[data-theme="dark"] .dashboard-sidebar .sidebar-nav .nav-link:hover,
[data-theme="dark"] .dashboard-sidebar .sidebar-nav .nav-link.active {
    color: var(--primary-color);
    background: rgba(var(--primary-rgb), 0.1);
}
[data-theme="dark"] .dashboard-header {
    background: var(--card-bg);
    border-bottom-color: var(--border-color);
}
[data-theme="dark"] .dashboard-main {
    background: var(--body-bg);
}
[data-theme="dark"] .table thead th {
    background: var(--card-bg);
    color: var(--text-secondary);
    border-bottom-color: var(--border-color);
}
[data-theme="dark"] .table tbody td {
    color: var(--text-color);
    border-bottom-color: var(--border-color);
}
[data-theme="dark"] .table-hover tbody tr:hover {
    background-color: rgba(var(--primary-rgb), 0.05);
}
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--input-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}
[data-theme="dark"] .form-control::placeholder {
    color: var(--text-muted);
}
[data-theme="dark"] .input-group-text {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-secondary);
}
[data-theme="dark"] .form-label {
    color: var(--text-color);
}
[data-theme="dark"] .alert-success {
    background-color: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
}
[data-theme="dark"] .alert-danger {
    background-color: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}
[data-theme="dark"] .alert-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: #fcd34d;
}
[data-theme="dark"] .alert-info {
    background-color: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}
[data-theme="dark"] .modal-content {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .modal-header,
[data-theme="dark"] .modal-footer {
    border-color: var(--border-color);
}
[data-theme="dark"] .dropdown-menu {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .dropdown-item {
    color: var(--text-color);
}
[data-theme="dark"] .dropdown-item:hover {
    background-color: rgba(var(--primary-rgb), 0.1);
    color: var(--primary-color);
}
[data-theme="dark"] .page-item .page-link {
    color: var(--text-color);
    background: transparent;
}
[data-theme="dark"] .page-item .page-link:hover {
    background-color: rgba(var(--primary-rgb), 0.1);
    color: var(--primary-color);
}
[data-theme="dark"] .footer {
    background: linear-gradient(180deg, #020617 0%, #000 100%);
}
[data-theme="dark"] .bg-section {
    background-color: var(--card-bg);
}
[data-theme="dark"] .progress {
    background-color: rgba(255, 255, 255, 0.1);
}
[data-theme="dark"] .navbar .input-group .form-control,
[data-theme="dark"] .navbar .input-group .btn {
    background: var(--input-bg);
    border-color: var(--border-color);
    color: var(--text-color);
}
[data-theme="dark"] .course-card {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .course-price {
    color: var(--heading-color);
}
[data-theme="dark"] .stat-value {
    color: var(--heading-color);
}
[data-theme="dark"] .auth-page {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}
[data-theme="dark"] .auth-page .card {
    background: var(--card-bg);
}
[data-theme="dark"] .category-card {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .badge-status {
    color: var(--text-color);
}

/* ========================================
   Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--body-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: rgba(var(--primary-rgb), 0.2);
    color: var(--secondary-color);
}

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

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

img {
    max-width: 100%;
    height: auto;
}

html {
    scroll-behavior: smooth;
}

/* ========================================
   Focus Visible - Keyboard Navigation
   ======================================== */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: 4px;
}

:focus:not(:focus-visible) {
    outline: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.2);
}

/* ========================================
   Custom Scrollbar
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.sidebar ::-webkit-scrollbar,
.dashboard-sidebar ::-webkit-scrollbar {
    width: 4px;
}

.sidebar ::-webkit-scrollbar-track,
.dashboard-sidebar ::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar ::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

.dashboard-sidebar ::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.12);
    border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #475569;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #64748b;
}

/* ========================================
   Typography
   ======================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5rem;
    color: var(--heading-color);
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--fs-4xl);
}
h2 {
    font-size: var(--fs-3xl);
}
h3 {
    font-size: var(--fs-2xl);
}
h4 {
    font-size: var(--fs-xl);
}
h5 {
    font-size: var(--fs-lg);
}
h6 {
    font-size: var(--fs-base);
}

.section-title {
    position: relative;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
    font-weight: 400;
}

/* ========================================
   Buttons - Refined Design System
   ======================================== */
.btn {
    font-weight: 600;
    padding: 0.6rem 1.4rem;
    border-radius: 10px;
    transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    font-size: var(--fs-base);
    letter-spacing: 0.015em;
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    border: 2px solid transparent;
    cursor: pointer;
    text-decoration: none;
    line-height: 1.5;
}

.btn:active {
    transform: translateY(0) scale(0.98);
    transition-duration: 0.1s;
}

/* -- Ripple effect on click -- */
.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at var(--ripple-x, 50%) var(--ripple-y, 50%),
        rgba(255, 255, 255, 0.25) 0%,
        transparent 60%
    );
    opacity: 0;
    transform: scale(0);
    transition:
        opacity 0.4s,
        transform 0.5s;
    pointer-events: none;
    border-radius: inherit;
}

.btn:active::after {
    opacity: 1;
    transform: scale(2.5);
    transition-duration: 0.08s, 0.08s;
}

/* ---- Primary ---- */
.btn-primary {
    background: linear-gradient(
        135deg,
        var(--primary-color) 0%,
        var(--primary-dark) 100%
    );
    border-color: transparent;
    color: #fff;
    box-shadow:
        0 2px 8px rgba(var(--primary-rgb), 0.25),
        0 1px 2px rgba(var(--primary-rgb), 0.15);
}

.btn-primary:hover,
.btn-primary:focus {
    background: linear-gradient(
        135deg,
        var(--primary-dark) 0%,
        var(--primary-color) 100%
    );
    color: #fff;
    transform: translateY(-2px);
    box-shadow:
        0 6px 20px rgba(var(--primary-rgb), 0.35),
        0 2px 6px rgba(var(--primary-rgb), 0.2);
}

.btn-primary:active {
    box-shadow: 0 1px 4px rgba(var(--primary-rgb), 0.3);
}

/* ---- Success ---- */
.btn-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}

.btn-success:hover,
.btn-success:focus {
    background: linear-gradient(135deg, #059669 0%, var(--success-color) 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.3);
}

/* ---- Danger ---- */
.btn-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #dc2626 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}

.btn-danger:hover,
.btn-danger:focus {
    background: linear-gradient(135deg, #dc2626 0%, var(--danger-color) 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.3);
}

/* ---- Warning ---- */
.btn-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #d97706 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
}

.btn-warning:hover,
.btn-warning:focus {
    background: linear-gradient(135deg, #d97706 0%, var(--warning-color) 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
}

/* ---- Secondary ---- */
.btn-secondary {
    background: var(--light-bg);
    border-color: var(--border-color);
    color: var(--text-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background: var(--border-color);
    border-color: var(--border-color);
    color: var(--text-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

/* ---- Dark ---- */
.btn-dark {
    background: linear-gradient(
        135deg,
        var(--secondary-color) 0%,
        var(--secondary-light) 100%
    );
    border-color: transparent;
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.btn-dark:hover,
.btn-dark:focus {
    background: linear-gradient(
        135deg,
        var(--secondary-light) 0%,
        var(--secondary-color) 100%
    );
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* ---- Outline Primary ---- */
.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: transparent;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.3);
}

/* ---- Outline Secondary ---- */
.btn-outline-secondary {
    color: var(--text-secondary);
    border-color: var(--border-color);
    background: transparent;
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
    background: var(--light-bg);
    border-color: var(--text-secondary);
    color: var(--text-color);
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.06);
}

/* ---- Outline Success ---- */
.btn-outline-success {
    color: var(--success-color);
    border-color: var(--success-color);
    background: transparent;
}

.btn-outline-success:hover,
.btn-outline-success:focus {
    background: var(--success-color);
    border-color: var(--success-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

/* ---- Outline Danger ---- */
.btn-outline-danger {
    color: var(--danger-color);
    border-color: var(--danger-color);
    background: transparent;
}

.btn-outline-danger:hover,
.btn-outline-danger:focus {
    background: var(--danger-color);
    border-color: var(--danger-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(239, 68, 68, 0.3);
}

/* ---- Outline Warning ---- */
.btn-outline-warning {
    color: var(--warning-color);
    border-color: var(--warning-color);
    background: transparent;
}

.btn-outline-warning:hover,
.btn-outline-warning:focus {
    background: var(--warning-color);
    border-color: var(--warning-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}

/* ---- Outline Light ---- */
.btn-outline-light {
    border-color: rgba(255, 255, 255, 0.7);
    color: #fff;
    background: transparent;
}

.btn-outline-light:hover,
.btn-outline-light:focus {
    background: #fff;
    color: var(--secondary-color);
    border-color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
}

/* ---- Light ---- */
.btn-light {
    background: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.btn-light:hover,
.btn-light:focus {
    background: var(--light-bg);
    border-color: var(--border-color);
    color: var(--text-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

/* ---- Link style ---- */
.btn-link {
    border: none;
    background: transparent;
    color: var(--primary-color);
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    text-decoration: none;
    box-shadow: none;
}

.btn-link:hover,
.btn-link:focus {
    color: var(--primary-dark);
    text-decoration: none;
    transform: none;
    box-shadow: none;
    background: rgba(var(--primary-rgb), 0.06);
    border-radius: 8px;
}

/* ---- Sizes ---- */
.btn-lg {
    padding: 0.8rem 2rem;
    font-size: var(--fs-lg);
    border-radius: 12px;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.35rem 0.85rem;
    font-size: var(--fs-sm);
    border-radius: var(--border-radius-sm);
    gap: 0.3rem;
}

/* ---- Icon Buttons ---- */
.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
}

.btn-icon-sm {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    font-size: 0.85rem;
}

.btn-icon-lg {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    font-size: 1.2rem;
}

/* ---- Icon spin inside button on hover ---- */
.btn i,
.btn .bi {
    transition: transform 0.3s ease;
}

.btn:hover i,
.btn:hover .bi {
    transform: translateX(1px);
}

/* ---- Disabled state ---- */
.btn:disabled,
.btn.disabled {
    opacity: 0.55;
    pointer-events: none;
    box-shadow: none;
    transform: none;
}

/* ---- Dark mode adjustments ---- */
[data-theme="dark"] .btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.12);
    color: var(--text-color);
}

[data-theme="dark"] .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.14);
    border-color: rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .btn-light {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
}

[data-theme="dark"] .btn-light:hover {
    background: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .btn-outline-secondary {
    border-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .btn-outline-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.25);
    color: #fff;
}

/* ========================================
   Forms
   ======================================== */
.form-control,
.form-select {
    border-radius: 10px;
    padding: 0.7rem 1rem;
    border: 1.5px solid var(--border-color);
    transition: var(--transition);
    font-size: 0.9rem;
    color: var(--text-color);
    background-color: var(--input-bg);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: var(--fs-base);
    color: var(--text-color);
}

.input-group .btn {
    border-radius: 0 10px 10px 0;
}

.input-group .form-control {
    border-radius: 10px 0 0 10px;
}

.input-group-text {
    border: 1.5px solid var(--border-color);
    background-color: var(--light-bg);
    color: var(--text-secondary);
    border-radius: 10px 0 0 10px;
    border-right: none;
}

.input-group .form-control {
    border-left: none;
}

.input-group .form-control:focus {
    box-shadow: none;
}

.input-group:focus-within .input-group-text {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.input-group:focus-within .form-control {
    border-color: var(--primary-color);
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1);
    border-color: var(--primary-color);
}

/* ========================================
   Cards
   ======================================== */
.card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    background: var(--card-bg);
}

.card:hover {
    box-shadow: var(--box-shadow-lg);
}

.card-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1.1rem 1.35rem;
    font-weight: 600;
}

.card-body {
    padding: 1.35rem;
}

.card-footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 1rem 1.35rem;
}

/* Course Card */
.course-card {
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--box-shadow-xl);
    border-color: rgba(var(--primary-rgb), 0.2);
}

.course-card .card-img-top {
    transition: var(--transition);
}

.course-card:hover .card-img-top {
    transform: scale(1.08);
}

.course-card .position-relative {
    overflow: hidden;
}

.course-card .card-body {
    padding: 1.15rem;
}

.course-card .card-title {
    font-size: 0.95rem;
    line-height: 1.4;
    min-height: 2.8em;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.course-card .card-footer {
    padding: 0.85rem 1.15rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.course-price {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--heading-color);
}

.course-price-free {
    color: var(--success-color);
    font-weight: 700;
}

.course-price-old {
    text-decoration: line-through;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 400;
}

/* Course Card - Wishlist Heart */
.course-card .wishlist-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    z-index: 2;
    color: var(--text-muted);
    font-size: 1rem;
}

.course-card .wishlist-btn:hover {
    background: #fff;
    color: var(--danger-color);
    transform: scale(1.1);
}

.course-card .wishlist-btn.active {
    background: var(--danger-color);
    color: #fff;
}

/* Course Card - Ribbon */
.course-card .card-ribbon {
    position: absolute;
    top: 16px;
    left: -8px;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    color: #fff;
    padding: 0.25rem 1rem 0.25rem 1.2rem;
    font-size: var(--fs-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    z-index: 2;
    border-radius: 0 4px 4px 0;
    box-shadow: 0 2px 8px rgba(var(--primary-rgb), 0.3);
}

.course-card .card-ribbon::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    border-style: solid;
    border-width: 6px 0 0 8px;
    border-color: var(--primary-dark) transparent transparent transparent;
}

.course-card .card-ribbon.ribbon-success {
    background: linear-gradient(135deg, var(--success-color), #059669);
}

.course-card .card-ribbon.ribbon-success::before {
    border-color: #059669 transparent transparent transparent;
}

.course-card .card-ribbon.ribbon-danger {
    background: linear-gradient(135deg, var(--danger-color), #dc2626);
}

.course-card .card-ribbon.ribbon-danger::before {
    border-color: #dc2626 transparent transparent transparent;
}

/* Course Card Horizontal */
.course-card-horizontal {
    display: flex;
    flex-direction: row;
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    background: var(--card-bg);
    transition: var(--transition);
}

.course-card-horizontal:hover {
    transform: translateY(-4px);
    box-shadow: var(--box-shadow-xl);
    border-color: rgba(var(--primary-rgb), 0.2);
}

.course-card-horizontal .card-img-side {
    width: 260px;
    min-height: 180px;
    object-fit: cover;
    flex-shrink: 0;
    transition: var(--transition);
}

.course-card-horizontal:hover .card-img-side {
    transform: scale(1.05);
}

.course-card-horizontal .card-img-wrapper {
    width: 260px;
    flex-shrink: 0;
    overflow: hidden;
    position: relative;
}

.course-card-horizontal .card-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
}

.course-card-horizontal .card-title {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.course-card-horizontal .card-text {
    font-size: var(--fs-sm);
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Category Card */
.category-card {
    text-align: center;
    border: 1px solid var(--border-color);
    cursor: pointer;
    background: var(--card-bg);
}

.category-card:hover {
    transform: translateY(-6px);
    border-color: rgba(var(--primary-rgb), 0.3);
    box-shadow: var(--box-shadow-lg);
}

.category-card .card-body {
    padding: 2rem 1rem;
}

.category-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(
        135deg,
        rgba(var(--primary-rgb), 0.1) 0%,
        rgba(var(--primary-rgb), 0.05) 100%
    );
    margin-bottom: 1rem;
    transition: var(--transition);
}

.category-card:hover .category-icon {
    background: linear-gradient(
        135deg,
        var(--primary-color) 0%,
        var(--primary-dark) 100%
    );
}

.category-card:hover .category-icon i {
    color: #fff !important;
}

/* ========================================
   Badges
   ======================================== */
.badge {
    font-weight: 600;
    padding: 0.35rem 0.7rem;
    border-radius: var(--border-radius-sm);
    font-size: var(--fs-xs);
    letter-spacing: 0.02em;
}

.badge.bg-primary {
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    ) !important;
    color: #fff;
}

.badge-status {
    padding: 0.4rem 0.85rem;
    border-radius: var(--border-radius-pill);
    font-size: var(--fs-xs);
    font-weight: 600;
}

/* ========================================
   Navigation - Public
   ======================================== */
.navbar {
    padding: 0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.navbar .container {
    padding-top: 0.7rem;
    padding-bottom: 0.7rem;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
}

.navbar-brand .text-primary {
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-link {
    font-weight: 600;
    padding: 0.5rem 1rem;
    color: var(--text-color);
    transition: var(--transition-fast);
    font-size: 0.9rem;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

.navbar .input-group {
    max-width: 280px;
}

.navbar .input-group .form-control {
    border-radius: 50px 0 0 50px;
    border: 1.5px solid var(--border-color);
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    background: var(--light-bg);
}

.navbar .input-group .form-control:focus {
    background: var(--input-bg);
}

.navbar .input-group .btn {
    border-radius: 0 50px 50px 0;
    padding: 0.5rem 0.85rem;
    border: 1.5px solid var(--border-color);
    border-left: none;
    background: var(--light-bg);
    color: var(--text-secondary);
}

.navbar .input-group .btn:hover {
    color: var(--primary-color);
    background: var(--light-bg);
}

.dropdown-menu {
    border: 1px solid var(--border-color);
    box-shadow: var(--box-shadow-xl);
    border-radius: var(--border-radius);
    padding: 0.5rem;
    animation: dropdownFadeIn 0.2s ease;
    background: var(--card-bg);
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-item {
    border-radius: var(--border-radius-sm);
    padding: 0.6rem 1rem;
    transition: var(--transition-fast);
    font-size: var(--fs-base);
    font-weight: 500;
}

.dropdown-item:hover {
    background-color: rgba(var(--primary-rgb), 0.08);
    color: var(--primary-color);
}

.dropdown-item i {
    width: 20px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    padding: 6rem 0 5rem;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: "";
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(var(--primary-rgb), 0.12) 0%,
        transparent 70%
    );
    pointer-events: none;
}

.hero-section::after {
    content: "";
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(
        circle,
        rgba(var(--primary-rgb), 0.08) 0%,
        transparent 70%
    );
    pointer-events: none;
}

.hero-section h1 {
    font-size: var(--fs-5xl);
    color: #fff;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.hero-section .lead {
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.7);
}

.hero-stats {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    margin-top: 2.5rem;
}

.hero-stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-light)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-visual {
    position: relative;
}

.hero-visual-card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-xl);
    padding: 2.5rem;
    text-align: center;
}

.hero-visual-card .play-btn {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    box-shadow: 0 10px 30px rgba(var(--primary-rgb), 0.4);
    transition: var(--transition);
    cursor: pointer;
}

.hero-visual-card .play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(var(--primary-rgb), 0.5);
}

.hero-floating-badge {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 0.8rem 1.2rem;
    box-shadow: var(--box-shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    animation: floatBadge 3s ease-in-out infinite;
}

.hero-floating-badge.badge-1 {
    top: 10%;
    right: -10%;
    animation-delay: 0s;
}

.hero-floating-badge.badge-2 {
    bottom: 15%;
    left: -5%;
    animation-delay: 1.5s;
}

@keyframes floatBadge {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* ========================================
   Sections
   ======================================== */
.section-padding {
    padding: var(--space-3xl) 0;
}

.bg-section {
    background-color: var(--light-bg);
}

/* ========================================
   Text Gradient
   ======================================== */
.text-gradient {
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Avatar
   ======================================== */
.avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.avatar-lg {
    width: 64px;
    height: 64px;
}

.avatar-xl {
    width: 96px;
    height: 96px;
}

/* ========================================
   Dashboard Layout
   ======================================== */
.dashboard-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    z-index: var(--z-sidebar);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

.dashboard-sidebar .sidebar-brand {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.dashboard-sidebar .sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
}

.dashboard-sidebar .sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.5rem;
    color: var(--text-secondary);
    font-size: var(--fs-base);
    font-weight: 500;
    border-radius: 0;
    transition: var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    position: relative;
}

.dashboard-sidebar .sidebar-nav .nav-link::after {
    display: none;
}

.dashboard-sidebar .sidebar-nav .nav-link i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.dashboard-sidebar .sidebar-nav .nav-link:hover {
    color: var(--primary-color);
    background: rgba(var(--primary-rgb), 0.06);
}

.dashboard-sidebar .sidebar-nav .nav-link.active {
    color: var(--primary-color);
    background: rgba(var(--primary-rgb), 0.1);
    font-weight: 600;
}

.dashboard-sidebar .sidebar-nav .nav-link.active::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--primary-color);
    border-radius: 0 3px 3px 0;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-sidebar) - 1);
    backdrop-filter: blur(4px);
}

.dashboard-main {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--light-bg);
    display: flex;
    flex-direction: column;
}

.dashboard-header {
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0.85rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(10px);
    min-height: var(--navbar-height);
}

.dashboard-content {
    flex: 1;
    padding: 0;
}

/* ========================================
   Stat Card
   ======================================== */
.stat-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    background: var(--card-bg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    padding: 1.5rem;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-md);
}

.stat-value {
    font-size: var(--fs-3xl);
    font-weight: 800;
    color: var(--heading-color);
    line-height: 1.2;
}

.stat-label {
    color: var(--text-secondary);
    font-size: var(--fs-sm);
    font-weight: 500;
}

/* ========================================
   Tables
   ======================================== */
.table {
    margin-bottom: 0;
    font-size: var(--fs-base);
}

.table thead th {
    background: var(--light-bg);
    font-weight: 600;
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    padding: 0.85rem 1rem;
    white-space: nowrap;
}

.table tbody td {
    padding: 0.85rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

.table-hover tbody tr:hover {
    background-color: rgba(var(--primary-rgb), 0.03);
}

.table-responsive {
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* ========================================
   Progress Bars
   ======================================== */
.progress {
    background-color: var(--light-bg);
    border-radius: var(--border-radius-pill);
    overflow: hidden;
    height: 8px;
}

.progress-bar {
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    border-radius: var(--border-radius-pill);
    transition: width 0.6s ease;
}

.progress-bar.bg-success {
    background: linear-gradient(
        135deg,
        var(--success-color),
        #059669
    ) !important;
}

.progress-bar.bg-warning {
    background: linear-gradient(
        135deg,
        var(--warning-color),
        #d97706
    ) !important;
}

.progress-bar.bg-danger {
    background: linear-gradient(
        135deg,
        var(--danger-color),
        #dc2626
    ) !important;
}

/* ========================================
   Alerts
   ======================================== */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    font-size: var(--fs-base);
    font-weight: 500;
}

.alert-success {
    background-color: rgba(var(--success-rgb), 0.1);
    color: var(--success-color);
}

.alert-danger {
    background-color: rgba(var(--danger-rgb), 0.1);
    color: var(--danger-color);
}

.alert-warning {
    background-color: rgba(var(--warning-rgb), 0.1);
    color: var(--warning-color);
}

.alert-info {
    background-color: rgba(var(--info-rgb), 0.1);
    color: var(--info-color);
}

.alert-dismissible .btn-close {
    padding: 1.1rem;
}

/* ========================================
   Breadcrumb
   ======================================== */
.breadcrumb {
    margin-bottom: 0;
    font-size: var(--fs-sm);
}

.breadcrumb-item a {
    color: var(--text-secondary);
    text-decoration: none;
}

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

.breadcrumb-item.active {
    color: var(--text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-muted);
}

/* ========================================
   Pagination
   ======================================== */
.pagination {
    gap: 4px;
}

.page-link {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm) !important;
    padding: 0.5rem 0.85rem;
    color: var(--text-color);
    font-weight: 500;
    font-size: var(--fs-sm);
    transition: var(--transition-fast);
}

.page-link:hover {
    background-color: rgba(var(--primary-rgb), 0.08);
    border-color: rgba(var(--primary-rgb), 0.3);
    color: var(--primary-color);
}

.page-item.active .page-link {
    background: linear-gradient(
        135deg,
        var(--primary-color),
        var(--primary-dark)
    );
    border-color: var(--primary-color);
    color: #fff;
}

/* ========================================
   Hover Shadow Utility
   ======================================== */
.hover-shadow {
    transition: var(--transition);
}

.hover-shadow:hover {
    box-shadow: var(--box-shadow-md);
    transform: translateY(-1px);
}

/* ========================================
   Auth Pages
   ======================================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light-bg) 0%, #e2e8f0 100%);
    padding: 2rem 1rem;
}

.auth-page .card {
    max-width: 480px;
    width: 100%;
    border: none;
    box-shadow: var(--box-shadow-xl);
}

.auth-page .card-body {
    padding: 2.5rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
    color: rgba(255, 255, 255, 0.7);
    padding-top: 4rem;
}

.footer h5 {
    color: #fff;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.footer a {
    color: rgba(255, 255, 255, 0.6);
    transition: var(--transition-fast);
}

.footer a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.5rem 0;
    margin-top: 3rem;
    font-size: var(--fs-sm);
}

/* ========================================
   Empty State
   ======================================== */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
}

.empty-state i {
    font-size: 3.5rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-state h5 {
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    max-width: 360px;
    margin: 0 auto 1.5rem;
}

/* ========================================
   Toast Container
   ======================================== */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.toast-container .toast-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem 1.25rem;
    box-shadow: var(--box-shadow-xl);
    min-width: 300px;
    max-width: 420px;
    animation: toastSlideIn 0.3s ease;
}

@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ========================================
   Responsive - Tablet
   ======================================== */
@media (max-width: 991.98px) {
    .dashboard-sidebar {
        transform: translateX(-100%);
    }

    .dashboard-sidebar.show {
        transform: translateX(0);
    }

    .sidebar-overlay.show {
        display: block;
    }

    .dashboard-main {
        margin-left: 0;
    }

    .dashboard-header {
        padding: 0.75rem 1rem;
    }

    .hero-section {
        padding: 4rem 0 3rem;
    }

    .hero-section h1 {
        font-size: var(--fs-3xl);
    }

    .hero-floating-badge {
        display: none;
    }

    .course-card-horizontal {
        flex-direction: column;
    }

    .course-card-horizontal .card-img-wrapper,
    .course-card-horizontal .card-img-side {
        width: 100%;
        min-height: 180px;
    }
}

/* ========================================
   Responsive - Mobile
   ======================================== */
@media (max-width: 575.98px) {
    .dashboard-header {
        padding: 0.65rem 0.75rem;
    }

    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    h1 {
        font-size: var(--fs-2xl);
    }
    h2 {
        font-size: var(--fs-xl);
    }
    h3 {
        font-size: var(--fs-lg);
    }

    .hero-section {
        padding: 3rem 0 2rem;
    }

    .hero-section h1 {
        font-size: var(--fs-2xl);
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: var(--fs-base);
    }

    .section-padding {
        padding: 2.5rem 0;
    }

    .card-body {
        padding: 1rem;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-value {
        font-size: var(--fs-2xl);
    }

    .course-card .card-body {
        padding: 0.85rem;
    }

    .course-card .card-footer {
        padding: 0.65rem 0.85rem;
    }

    .auth-page .card-body {
        padding: 1.5rem;
    }
}

/* ========================================
   Print
   ======================================== */
@media print {
    .dashboard-sidebar,
    .dashboard-header,
    .sidebar-overlay,
    .btn,
    .toast-container {
        display: none !important;
    }

    .dashboard-main {
        margin-left: 0 !important;
    }

    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}

/* ========================================
   Animations
   ======================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.fade-in {
    animation: fadeIn 0.4s ease;
}

.fade-in-up {
    animation: fadeInUp 0.5s ease;
}

.slide-in-left {
    animation: slideInLeft 0.4s ease;
}

/* ========================================
   Misc Utilities
   ======================================== */
.min-width-0 {
    min-width: 0;
}

.cursor-pointer {
    cursor: pointer;
}

.border-dashed {
    border-style: dashed !important;
}

.text-decoration-none:hover {
    text-decoration: none;
}

.fw-800 {
    font-weight: 800;
}

.fs-7 {
    font-size: var(--fs-sm);
}

.fs-8 {
    font-size: var(--fs-xs);
}

.gap-1 {
    gap: 0.25rem;
}
.gap-2 {
    gap: 0.5rem;
}
.gap-3 {
    gap: 1rem;
}

/* ========================================
   Public Navbar Body Offset
   ======================================== */
.navbar.fixed-top ~ main,
body.has-navbar {
    padding-top: 72px;
}

/* ========================================
   Newsletter Section
   ======================================== */
.newsletter-section {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 4rem 0;
    color: #fff;
}

.newsletter-section h3 {
    color: #fff;
}

.newsletter-section .form-control {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
}

.newsletter-section .form-control::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Breadcrumb Modern
   ======================================== */
.breadcrumb-modern {
    font-size: 0.75rem;
    background: none;
    padding: 0;
    margin: 0;
}

.breadcrumb-modern .breadcrumb-item a {
    color: var(--text-secondary);
}

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

.breadcrumb-modern .breadcrumb-item.active {
    color: var(--text-muted);
}

/* ========================================
   Instructor Dashboard Layout (.sidebar)
   ======================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    color: #fff;
    z-index: var(--z-sidebar);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    transition: transform 0.3s ease;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.sidebar .sidebar-brand {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    flex-shrink: 0;
}

.sidebar .sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 0.5rem 0;
}

.sidebar .sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 1.5rem;
    color: rgba(255, 255, 255, 0.65);
    font-size: var(--fs-base);
    font-weight: 500;
    border-left: 3px solid transparent;
    transition: var(--transition-fast);
    position: relative;
}

.sidebar .sidebar-nav .nav-link::after {
    display: none;
}

.sidebar .sidebar-nav .nav-link i {
    font-size: 1.1rem;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    opacity: 0.8;
}

.sidebar .sidebar-nav .nav-link:hover {
    color: #fff;
    background: rgba(var(--primary-rgb), 0.12);
    border-left-color: var(--primary-color);
}

.sidebar .sidebar-nav .nav-link:hover i {
    opacity: 1;
}

.sidebar .sidebar-nav .nav-link.active {
    color: #fff;
    background: rgba(var(--primary-rgb), 0.12);
    border-left-color: var(--primary-color);
    font-weight: 600;
}

.sidebar .sidebar-nav .nav-link.active i {
    opacity: 1;
}

.sidebar .sidebar-section-title {
    padding: 1rem 1.5rem 0.35rem;
    font-size: 0.65rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.35);
    letter-spacing: 1.2px;
    font-weight: 600;
}

.sidebar .border-top {
    border-color: rgba(255, 255, 255, 0.08) !important;
}

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    background: var(--light-bg);
    display: flex;
    flex-direction: column;
}

/* ========================================
   Admin Dashboard Layout
   ======================================== */
.admin-sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
    color: #fff;
    z-index: var(--z-sidebar);
    transition: transform 0.3s ease;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
}

.admin-sidebar .sidebar-brand {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.admin-sidebar .sidebar-brand span {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.1rem;
}

.admin-sidebar .nav-section {
    padding: 1rem 1.5rem 0.35rem;
    font-size: 0.65rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.35);
    letter-spacing: 1.2px;
    font-weight: 600;
}

.admin-sidebar .nav-link {
    padding: 0.6rem 1.5rem;
    color: rgba(255, 255, 255, 0.65);
    display: flex;
    align-items: center;
    font-size: 0.84rem;
    transition: all 0.2s;
    border-left: 3px solid transparent;
    font-weight: 500;
}

.admin-sidebar .nav-link::after {
    display: none;
}

.admin-sidebar .nav-link:hover,
.admin-sidebar .nav-link.active {
    color: #fff;
    background: rgba(var(--primary-rgb), 0.12);
    border-left-color: var(--primary-color);
}

.admin-sidebar .nav-link.active {
    font-weight: 600;
}

.admin-sidebar .nav-link i {
    width: 22px;
    margin-right: 10px;
    font-size: 1rem;
    opacity: 0.8;
}

.admin-sidebar .nav-link:hover i,
.admin-sidebar .nav-link.active i {
    opacity: 1;
}

.admin-sidebar .nav-link .badge {
    margin-left: auto;
    font-size: 0.65rem;
}

.admin-main {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

.admin-header {
    background: var(--card-bg);
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.admin-content {
    padding: 1.5rem;
}

.sidebar-toggle-btn {
    display: none;
}

/* ========================================
   Course Player Layout
   ======================================== */
.player-page {
    background: #1a1a1a;
    color: #fff;
    overflow: hidden;
}

.player-header {
    height: 60px;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    border-bottom: 1px solid #333;
}

.player-header .course-title {
    font-size: 0.9rem;
    max-width: 400px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.player-container {
    display: flex;
    height: calc(100vh - 60px);
}

.video-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: #000;
}

.video-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
}

.video-wrapper .video-js {
    width: 100%;
    height: 100%;
    max-height: calc(100vh - 140px);
}

.lesson-controls {
    background: #1a1a1a;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #333;
}

.player-sidebar {
    width: 350px;
    background: #222;
    border-left: 1px solid #333;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.player-sidebar .sidebar-header {
    padding: 1rem;
    border-bottom: 1px solid #333;
}

.player-sidebar .sidebar-tabs .nav-link {
    color: #888;
    border: none;
    border-radius: 0;
    padding: 0.75rem 1rem;
}

.player-sidebar .sidebar-tabs .nav-link.active {
    color: #fff;
    background: transparent;
    border-bottom: 2px solid var(--primary-color);
}

.player-sidebar .sidebar-content {
    flex: 1;
    overflow-y: auto;
}

.content-section-header {
    padding: 0.75rem 1rem;
    background: #2a2a2a;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.content-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #2a2a2a;
    cursor: pointer;
    transition: background 0.2s;
}

.content-item:hover {
    background: #2a2a2a;
}

.content-item.active {
    background: rgba(var(--primary-rgb), 0.2);
    border-left: 3px solid var(--primary-color);
}

.content-item.completed .status-icon {
    color: var(--success-color);
}

.content-item .status-icon {
    width: 20px;
    margin-right: 10px;
    text-align: center;
}

.content-item .item-title {
    flex: 1;
    font-size: 0.9rem;
}

.content-item .item-duration {
    color: #888;
    font-size: 0.8rem;
}

.course-progress {
    padding: 1rem;
    background: #2a2a2a;
}

.sidebar-toggle {
    display: none;
}

/* ========================================
   Dark Mode - Instructor & Admin Sidebars
   ======================================== */
[data-theme="dark"] .sidebar {
    background: linear-gradient(180deg, #020617 0%, #0f172a 100%);
    border-right-color: rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .main-content {
    background: var(--body-bg);
}

[data-theme="dark"] .admin-sidebar {
    background: linear-gradient(180deg, #020617 0%, #0f172a 100%);
    border-right-color: rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .admin-main {
    background: var(--body-bg);
}

[data-theme="dark"] .admin-header {
    background: var(--card-bg);
    border-bottom-color: var(--border-color);
}

/* ========================================
   Responsive - Instructor Sidebar
   ======================================== */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.show {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .sidebar-toggle-btn {
        display: block !important;
    }

    .player-sidebar {
        position: fixed;
        right: -100%;
        top: 60px;
        height: calc(100vh - 60px);
        z-index: var(--z-sidebar);
        transition: right 0.3s;
    }

    .player-sidebar.show {
        right: 0;
    }

    .sidebar-toggle {
        display: block !important;
    }
}