/* Base CSS Utilities - Shared across all themes */
/* Themes should import or override these as needed */

* {
    box-sizing: border-box;
}

/* Use 100% width instead of 100vw to avoid scrollbar-related gaps */
html {
    margin: 0;
    padding: 0;
    min-height: 100%;
    width: 100%;
    overflow-x: hidden;
    background: var(--color-bg, #000);
    /* Scrollbar gutter prevents layout shift */
    scrollbar-gutter: stable;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
    background: var(--color-bg, #000);
}

/* Style scrollbar to match theme - prevents desktop showing through */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
    background: var(--color-bg, #000);
}

::-webkit-scrollbar-track {
    background: var(--color-bg, #000);
}

::-webkit-scrollbar-thumb {
    background: var(--color-bg-alt, #333);
    border-radius: 6px;
    border: 3px solid var(--color-bg, #000);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary, #666);
}

/* Firefox scrollbar */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--color-bg-alt, #333) var(--color-bg, #000);
}

/* Ensure the main wrapper fills viewport */
body > div,
.page-wrapper,
.page-container,
#app {
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
}

/* Font Awesome icon fixes */
.fas,
.far,
.fab,
.fal,
.fad {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Brands", "Font Awesome 6 Pro";
    font-weight: 900;
    display: inline-block;
    font-style: normal;
    font-variant: normal;
    text-rendering: auto;
    line-height: 1;
}

.fab {
    font-family: "Font Awesome 6 Brands";
    font-weight: 400;
}

.far {
    font-weight: 400;
}

/* ============================================
   THEME PICKER STYLES (consistent across themes)
   ============================================ */

#theme-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

#theme-toggle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: 2px solid currentColor;
    background: var(--theme-toggle-bg, #fff);
    color: var(--theme-toggle-color, #000);
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    transition: transform 0.2s ease;
}

#theme-toggle:hover {
    transform: scale(1.1);
}

#theme-toggle:focus {
    outline: 2px solid var(--theme-toggle-color, #000);
    outline-offset: 2px;
}

#theme-menu {
    position: absolute;
    top: 60px;
    right: 0;
    width: 320px;
    max-height: 80vh;
    overflow-y: auto;
    background: var(--theme-menu-bg, #fff);
    border: 2px solid var(--theme-menu-border, #333);
    border-radius: 8px;
    padding: 16px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}

#theme-menu h3 {
    margin: 0 0 12px 0;
    font-size: 16px;
    font-weight: bold;
    color: var(--theme-menu-title, #000);
}

.theme-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.theme-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 12px 8px;
    border: 2px solid var(--theme-option-border, #ddd);
    background: var(--theme-option-bg, #f5f5f5);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.theme-option:hover {
    border-color: var(--theme-option-hover, #333);
    transform: translateY(-2px);
}

.theme-option.active {
    border-color: var(--theme-option-active, #0066cc);
    background: var(--theme-option-active-bg, #e6f2ff);
}

.theme-emoji {
    font-size: 24px;
}

.theme-name {
    font-size: 12px;
    text-align: center;
    color: var(--theme-option-text, #333);
}

/* Theme option wrapper with pin button */
.theme-option-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
}

.theme-option-wrapper .theme-option {
    width: 100%;
}

.theme-option-wrapper.active .theme-option {
    border-color: var(--theme-option-active, #0066cc);
    background: var(--theme-option-active-bg, #e6f2ff);
}

.theme-option-wrapper.pinned {
    outline: 2px solid var(--theme-pin-color, #ff6b35);
    outline-offset: 2px;
    border-radius: 10px;
}

/* Pin button */
.theme-pin-btn {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--theme-menu-border, #333);
    background: var(--theme-menu-bg, #fff);
    font-size: 12px;
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    z-index: 10;
}

.theme-option-wrapper:hover .theme-pin-btn,
.theme-pin-btn:focus,
.theme-pin-btn.pinned {
    opacity: 1;
}

.theme-pin-btn:hover {
    transform: scale(1.1);
    background: var(--theme-option-hover-bg, #eee);
}

.theme-pin-btn.pinned {
    background: var(--theme-pin-color, #ff6b35);
    border-color: var(--theme-pin-color, #ff6b35);
}

/* Pinned theme indicator */
.pinned-indicator {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    margin-bottom: 12px;
    background: var(--theme-pin-bg, rgba(255, 107, 53, 0.1));
    border: 1px solid var(--theme-pin-color, #ff6b35);
    border-radius: 6px;
    font-size: 13px;
}

.pinned-label {
    color: var(--theme-option-text, #333);
}

.unpin-btn {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: none;
    background: var(--theme-pin-color, #ff6b35);
    color: white;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
}

.unpin-btn:hover {
    background: var(--theme-pin-hover, #e55a2b);
    transform: scale(1.1);
}

/* ============================================
   RESPONSIVE LAYOUT - WIDE SCREEN DEFAULTS
   ============================================ */

/* Ensure grids can expand on wider screens - themes can override */
@media (min-width: 1600px) {
    .class-grid,
    .resource-grid,
    .event-list,
    .track-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Reduce motion for users who prefer it */
@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;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    #theme-selector {
        display: none !important;
    }
    
    * {
        background: white !important;
        color: black !important;
    }
}

/* ============================================
   INTERNAL PAGE BASE STYLES
   (Class, Course, Intensive pages)
   Themes override colors/fonts, structure remains consistent
   ============================================ */

/* --- HERO/HEADER --- */
.site-header {
    position: relative;
    padding: 3rem 2rem;
    text-align: center;
    background: var(--color-bg-alt, #1a1a1a);
}

/* Top section with hero + instructor sidebar */
.top-section {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.top-section .site-header {
    flex: 1;
    text-align: left;
}

.hero-background {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0.3;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.5), var(--color-bg, #000));
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

/* Instructor sidebar (outside hero) */
.instructor-sidebar {
    flex-shrink: 0;
    width: 320px;
    padding-top: 3rem;
}

.instructor-card-compact {
    background: var(--color-card-bg, rgba(255,255,255,0.05));
    border: 1px solid var(--color-border, rgba(255,255,255,0.15));
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
}

.instructor-card-compact .instructor-image {
    margin-bottom: 1rem;
}

.instructor-card-compact .instructor-image img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-primary, #00bfff);
}

.instructor-card-compact .instructor-placeholder {
    width: 120px;
    height: 120px;
    margin: 0 auto;
}

.instructor-card-compact .instructor-name {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.instructor-card-compact .instructor-title {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.instructor-card-compact .instructor-bio {
    font-size: 0.85rem;
    line-height: 1.6;
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 1rem;
    white-space: pre-line; /* Preserve line breaks from database */
}

.instructor-card-compact .instructor-links {
    justify-content: center;
    gap: 0.5rem;
}

.instructor-card-compact .social-link {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
}

.site-logo {
    display: inline-block;
    color: var(--color-primary, #00bfff);
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1rem;
    border: none;
}

.class-meta {
    margin-bottom: 1rem;
}

.class-badge {
    display: inline-block;
    background: var(--color-primary, #00bfff);
    color: var(--color-bg, #000);
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.class-title {
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    font-weight: 700;
    color: var(--color-text, #fff);
    margin: 1rem 0;
    line-height: 1.2;
}

.class-description {
    color: var(--color-text-muted, rgba(255,255,255,0.8));
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.class-audience {
    color: var(--color-text-muted, rgba(255,255,255,0.7));
    font-size: 0.95rem;
    font-style: italic;
    margin: 0.5rem 0;
    line-height: 1.5;
}

/* --- HERO STATS --- */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary, #00bfff);
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted, rgba(255,255,255,0.6));
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* --- CTA BUTTONS --- */
.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-block;
    background: var(--color-primary, #00bfff);
    color: var(--color-bg, #000);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: none;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 191, 255, 0.3);
}

.btn-secondary {
    display: inline-block;
    background: transparent;
    color: var(--color-primary, #00bfff);
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    border: 2px solid var(--color-primary, #00bfff);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.btn-secondary:hover {
    background: var(--color-primary, #00bfff);
    color: var(--color-bg, #000);
}

/* --- MAIN CONTENT --- */
.site-main {
    background: var(--color-bg, #000);
    color: var(--color-text, #fff);
}

/* --- FEATURES SECTION --- */
.features-section {
    background: var(--color-bg-alt, rgba(255,255,255,0.03));
    padding: 3rem 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-card-bg, rgba(255,255,255,0.05));
    border: 1px solid var(--color-border, rgba(255,255,255,0.1));
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: transform 0.2s, border-color 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-primary, #00bfff);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary, #00bfff);
    margin-bottom: 0.5rem;
}

.feature-desc {
    color: var(--color-text-muted, rgba(255,255,255,0.7));
    font-size: 0.95rem;
}

/* --- CONTENT SECTIONS --- */
.content-section {
    padding: 4rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.content-section.alt-bg {
    background: var(--color-bg-alt, rgba(255,255,255,0.02));
    max-width: none;
}

.content-section.alt-bg > * {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-primary, #00bfff);
    text-align: center;
    margin-bottom: 1.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-muted, rgba(255,255,255,0.7));
    margin-bottom: 2rem;
}

.content-card {
    background: var(--color-card-bg, rgba(255,255,255,0.05));
    border: 1px solid var(--color-border, rgba(255,255,255,0.1));
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
}

.card-title {
    font-size: 1.2rem;
    color: var(--color-primary, #00bfff);
    margin-bottom: 1rem;
}

.lead-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text, rgba(255,255,255,0.9));
}

.learn-list ul,
.learn-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.learn-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text, rgba(255,255,255,0.9));
}

.learn-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary, #00bfff);
}

.section-cta {
    text-align: center;
    margin-top: 2rem;
}

/* --- FORMAT GRID --- */
.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.format-card {
    background: var(--color-card-bg, rgba(255,255,255,0.05));
    border: 1px solid var(--color-border, rgba(255,255,255,0.1));
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
}

.format-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.format-title {
    font-size: 0.85rem;
    color: var(--color-text-muted, rgba(255,255,255,0.6));
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.format-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary, #00bfff);
    margin-bottom: 0.5rem;
}

.format-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted, rgba(255,255,255,0.6));
}

/* --- SCHEDULE / SESSIONS --- */
.schedule-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.session-card {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    background: var(--color-card-bg, rgba(255,255,255,0.03));
    border: 1px solid var(--color-border, rgba(255,255,255,0.1));
    border-radius: 0.75rem;
    padding: 1.5rem;
}

.session-info {
    flex: 1;
}

.session-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text, #fff);
    margin: 0 0 0.25rem;
}

.session-datetime {
    font-size: 0.9rem;
    color: var(--color-primary, #00bfff);
    margin-bottom: 0.5rem;
}

.session-desc {
    font-size: 0.9rem;
    color: var(--color-text-muted, rgba(255,255,255,0.7));
    margin: 0;
}

.session-duration {
    flex-shrink: 0;
}

.duration-badge {
    display: inline-block;
    background: var(--color-primary-alpha, rgba(0,191,255,0.2));
    color: var(--color-primary, #00bfff);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.85rem;
    font-weight: 600;
}

.timezone-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-text-muted, rgba(255,255,255,0.5));
    margin-top: 1.5rem;
}

/* --- INSTRUCTOR SECTION --- */
.instructor-card {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    max-width: 800px;
    margin: 0 auto;
}

.instructor-image {
    flex-shrink: 0;
}

.instructor-image img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-primary, #00bfff);
}

.instructor-placeholder {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: var(--color-primary, #00bfff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-bg, #000);
}

.instructor-info {
    flex: 1;
}

.instructor-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary, #00bfff);
    margin: 0 0 0.5rem;
}

.instructor-title {
    color: var(--color-text-muted, rgba(255,255,255,0.7));
    margin-bottom: 1rem;
}

.instructor-bio {
    color: var(--color-text, rgba(255,255,255,0.8));
    line-height: 1.7;
    margin: 0;
    white-space: pre-line; /* Preserve line breaks from database */
}

.instructor-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.social-link {
    color: var(--color-primary, #00bfff);
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-primary, #00bfff);
    border-radius: 0.5rem;
    font-size: 0.85rem;
    transition: background 0.2s;
}

.social-link:hover {
    background: var(--color-primary, #00bfff);
    color: var(--color-bg, #000);
}

/* --- PRICING SECTION --- */
.pricing-section {
    background: var(--color-bg-alt, rgba(0,191,255,0.05));
    padding: 4rem 2rem;
    max-width: none !important;
}

.pricing-note {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 2rem;
    color: var(--color-text-muted, rgba(255,255,255,0.7));
}

.pricing-note a {
    color: var(--color-primary, #00bfff);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.pricing-grid.single {
    grid-template-columns: 1fr !important;
    max-width: 1200px;
}

@media (max-width: 768px) {
    .pricing-grid.single {
        max-width: 100%;
    }
}

.pricing-card {
    background: var(--color-card-bg, rgba(0,0,0,0.5));
    border: 2px solid var(--color-border, rgba(255,255,255,0.1));
    border-radius: 1.5rem;
    overflow: hidden;
    transition: border-color 0.2s, transform 0.2s;
}

.pricing-card:hover,
.pricing-card.featured {
    border-color: var(--color-primary, #00bfff);
    transform: translateY(-4px);
}

.pricing-badge {
    background: var(--color-primary, #00bfff);
    color: var(--color-bg, #000);
    text-align: center;
    padding: 0.75rem;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.pricing-header {
    padding: 2rem;
    text-align: center;
    border-bottom: 1px solid var(--color-border, rgba(255,255,255,0.1));
}

.pricing-name {
    font-size: 1.2rem;
    color: var(--color-primary, #00bfff);
    margin-bottom: 1rem;
}

.pricing-amount {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.pricing-label {
    font-size: 0.9rem;
    color: var(--color-text-muted, rgba(255,255,255,0.6));
    margin-right: 0.5rem;
}

.currency {
    font-size: 1.5rem;
    color: var(--color-text-muted, rgba(255,255,255,0.7));
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text, #fff);
}

.pricing-subtext {
    font-size: 0.9rem;
    color: var(--color-text-muted, rgba(255,255,255,0.5));
    margin-top: 0.5rem;
}

.pricing-lifetime {
    font-size: 0.85rem;
    color: var(--color-primary, #00bfff);
    margin-top: 0.5rem;
}

.pricing-features {
    padding: 2rem;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text, rgba(255,255,255,0.8));
    border-bottom: 1px solid var(--color-border, rgba(255,255,255,0.05));
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-primary, #00bfff);
}

.pricing-cta {
    padding: 0 2rem 2rem;
    text-align: center;
}

.pricing-cta .btn-primary {
    width: 100%;
}

.secure-note {
    font-size: 0.8rem;
    color: var(--color-text-muted, rgba(255,255,255,0.5));
    margin-top: 1rem;
}

.community-note {
    text-align: center;
    margin-top: 3rem;
    color: var(--color-text-muted, rgba(255,255,255,0.6));
}

.community-note .small {
    font-size: 0.85rem;
    color: var(--color-text-muted, rgba(255,255,255,0.4));
}

/* --- ENTERPRISE CALLOUT --- */
.enterprise-callout {
    background: var(--color-bg-alt, rgba(255,255,255,0.02));
    padding: 3rem 2rem;
    text-align: center;
    border-top: 1px solid var(--color-border, rgba(255,255,255,0.1));
}

.enterprise-content {
    max-width: 600px;
    margin: 0 auto;
}

.enterprise-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text, #fff);
    margin: 0 0 0.75rem;
}

.enterprise-text {
    color: var(--color-text-muted, rgba(255,255,255,0.7));
    margin: 0;
}

.enterprise-text a {
    color: var(--color-primary, #00bfff);
    font-weight: 600;
}

/* --- FOOTER --- */
.page-footer {
    background: var(--color-bg-alt, rgba(0,0,0,0.3));
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--color-border, rgba(255,255,255,0.1));
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.footer-nav a {
    color: var(--color-primary, #00bfff);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-text-muted, rgba(255,255,255,0.5));
}

/* --- RESPONSIVE --- */
@media (max-width: 900px) {
    .top-section {
        flex-direction: column;
        padding: 0 1rem;
    }
    
    .top-section .site-header {
        text-align: center;
    }
    
    .instructor-sidebar {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
        padding-top: 1rem;
    }
}

@media (max-width: 768px) {
    .instructor-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .instructor-links {
        justify-content: center;
    }
    
    .hero-stats {
        gap: 1.5rem;
        justify-content: center;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .format-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .session-card {
        flex-direction: column;
    }
    
    .session-duration {
        align-self: flex-start;
    }
    
    .hero-cta {
        justify-content: center;
    }
}