/* SMC Learning Platform - Main Styles */

:root {
    /* SMC Brand Colors */
    --bs-primary: #006D77;
    --bs-primary-rgb: 0, 109, 119;
    --bs-secondary: #17303B;
    --bs-secondary-rgb: 23, 48, 59;
    --bs-success: #00D084;
    --bs-success-rgb: 0, 208, 132;
    --bs-info: #00A6FB;
    --bs-info-rgb: 0, 166, 251;
    --bs-warning: #FFC857;
    --bs-warning-rgb: 255, 200, 87;
    --bs-danger: #E63946;
    --bs-danger-rgb: 230, 57, 70;
    --bs-light: #F5F7F9;
    --bs-light-rgb: 245, 247, 249;
    --bs-dark: #1A1A1A;
    --bs-dark-rgb: 26, 26, 26;

    /* Brand Gradient */
    --brand-gradient: linear-gradient(135deg, #006D77 0%, #00D084 100%);
    --hero-gradient: linear-gradient(135deg, #006D77 0%, #00D084 50%, #00A6FB 100%);

    /* Typography */
    --font-heading: 'Roboto', sans-serif;
    --font-body: 'Inter', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Base Typography */
body {
    font-family: var(--font-body);
    color: var(--bs-dark);
    background-color: #fff;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--bs-dark);
}

/* Navbar */
.navbar {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--bs-primary) !important;
    font-size: 1.35rem;
}

.navbar-brand:hover {
    color: #005960 !important;
}

.nav-link {
    font-weight: 500;
    color: var(--bs-dark);
    transition: color 0.2s;
}

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

/* Bootstrap Color Overrides */
.btn-primary {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: #005960;
    border-color: #005960;
}

.btn-outline-primary {
    color: var(--bs-primary);
    border-color: var(--bs-primary);
}

.btn-outline-primary:hover {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
    color: #fff;
}

.btn-success {
    background-color: var(--bs-success);
    border-color: var(--bs-success);
    color: #fff;
}

.btn-success:hover {
    background-color: #00b571;
    border-color: #00b571;
}

.bg-primary {
    background-color: var(--bs-primary) !important;
}

.text-primary {
    color: var(--bs-primary) !important;
}

.bg-success {
    background-color: var(--bs-success) !important;
}

.text-success {
    color: var(--bs-success) !important;
}

.link-primary {
    color: var(--bs-primary);
}

.link-primary:hover {
    color: #005960;
}

/* Links */
a {
    color: var(--bs-primary);
    transition: color 0.2s;
}

a:hover {
    color: #005960;
}

/* Cards */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

/* Course Card */
.course-card {
    height: 100%;
    overflow: hidden;
}

.course-card .card-img-top {
    height: 180px;
    object-fit: cover;
}

.course-card .badge {
    position: absolute;
    top: 12px;
    right: 12px;
}

.course-card .card-title {
    font-family: var(--font-heading);
    font-weight: 500;
}

/* Progress Bar */
.progress {
    height: 8px;
    border-radius: 4px;
    background-color: rgba(0, 109, 119, 0.1);
}

.progress-bar {
    background-color: var(--bs-primary);
}

/* Forms */
.form-control:focus,
.form-select:focus {
    border-color: var(--bs-primary);
    box-shadow: 0 0 0 0.2rem rgba(0, 109, 119, 0.15);
}

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

/* Hero Section */
.hero {
    background: var(--hero-gradient);
    color: white;
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero h1 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 3rem;
    color: #fff;
    position: relative;
    z-index: 1;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.hero .btn {
    position: relative;
    z-index: 1;
}

.hero .btn-light {
    background: #fff;
    color: var(--bs-primary);
    font-weight: 600;
}

.hero .btn-light:hover {
    background: var(--bs-light);
}

/* Category Cards */
.category-card {
    text-decoration: none;
    color: inherit;
    display: block;
}

.category-card:hover {
    color: var(--bs-primary);
}

.category-card .card {
    border: 2px solid transparent;
}

.category-card:hover .card {
    border-color: var(--bs-primary);
}

/* Lesson Sidebar */
.lesson-sidebar {
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}

.lesson-item {
    padding: 12px 16px;
    border-bottom: 1px solid #e5e7eb;
    cursor: pointer;
    transition: all 0.2s;
}

.lesson-item:hover {
    background-color: rgba(0, 109, 119, 0.05);
}

.lesson-item.active {
    background-color: rgba(0, 109, 119, 0.1);
    border-left: 3px solid var(--bs-primary);
}

.lesson-item.completed {
    color: #6b7280;
}

.lesson-item .check-icon {
    color: var(--bs-success);
}

/* Video Player Container */
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    background: #000;
    border-radius: 12px;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: #6b7280;
}

.empty-state i {
    font-size: 64px;
    margin-bottom: 20px;
    color: var(--bs-primary);
    opacity: 0.3;
}

/* Loading Spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0, 109, 119, 0.2);
    border-top: 2px solid var(--bs-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Badges */
.badge.bg-primary {
    background-color: var(--bs-primary) !important;
}

.badge.bg-success {
    background-color: var(--bs-success) !important;
}

.badge.bg-info {
    background-color: var(--bs-info) !important;
}

.badge.bg-warning {
    background-color: var(--bs-warning) !important;
    color: var(--bs-dark);
}

/* Alerts */
.alert-success {
    background-color: rgba(0, 208, 132, 0.1);
    border-color: rgba(0, 208, 132, 0.2);
    color: #065f46;
}

.alert-info {
    background-color: rgba(0, 166, 251, 0.1);
    border-color: rgba(0, 166, 251, 0.2);
    color: #0369a1;
}

.alert-warning {
    background-color: rgba(255, 200, 87, 0.2);
    border-color: rgba(255, 200, 87, 0.3);
    color: #92400e;
}

.alert-danger {
    background-color: rgba(230, 57, 70, 0.1);
    border-color: rgba(230, 57, 70, 0.2);
    color: #b91c1c;
}

/* Footer */
.site-footer {
    background-color: var(--bs-secondary);
    color: rgba(255, 255, 255, 0.85);
}

.site-footer h5,
.site-footer h6 {
    color: #fff;
    font-family: var(--font-heading);
}

.footer-text {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    margin-bottom: 0;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color 0.2s;
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--bs-success);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.1);
}

.footer-link-highlight {
    color: var(--bs-success);
    text-decoration: none;
}

.footer-link-highlight:hover {
    color: #00b571;
}

.social-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 1.25rem;
    transition: color 0.2s;
}

.social-links a:hover {
    color: var(--bs-success);
}

/* Stats Section */
.stats-section {
    background: var(--bs-light);
}

.stat-item h3 {
    color: var(--bs-primary);
    font-family: var(--font-heading);
    font-weight: 700;
}

/* Section Headings */
.section-heading {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--bs-dark);
    margin-bottom: 2rem;
}

/* Pagination */
.page-link {
    color: var(--bs-primary);
}

.page-link:hover {
    color: #005960;
}

.page-item.active .page-link {
    background-color: var(--bs-primary);
    border-color: var(--bs-primary);
}

/* Dropdown */
.dropdown-item.active,
.dropdown-item:active {
    background-color: var(--bs-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }
}

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 109, 119, 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 109, 119, 0.5);
}

/* Certificate Card */
.certificate-card {
    background: var(--brand-gradient);
    color: white;
    border-radius: 12px;
    padding: 2rem;
}

.certificate-card h5 {
    color: white;
}

/* Price Display */
.price-display {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--bs-primary);
}

.price-display.free {
    color: var(--bs-success);
}

/* Instructor Card */
.instructor-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--bs-primary);
}

/* Feature Icon */
.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(0, 109, 119, 0.1);
    color: var(--bs-primary);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Testimonial Card */
.testimonial-card {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.testimonial-card .quote-icon {
    color: var(--bs-primary);
    opacity: 0.3;
    font-size: 2rem;
}