/**
 * Премиальный дизайн страницы программы
 * Современный, красивый интерфейс высшего качества
 */

/* ================================================
   ПЕРЕМЕННЫЕ
   ================================================ */
:root {
    --sp-primary: #68202d;
    --sp-secondary: #8b2d3a;
    --sp-tertiary: #a13d4c;
    --sp-accent: #d4576b;
    --sp-success: #43e97b;
    
    --sp-dark: #1a1a2e;
    --sp-gray-900: #1f2937;
    --sp-gray-800: #374151;
    --sp-gray-700: #4b5563;
    --sp-gray-600: #6b7280;
    --sp-gray-500: #9ca3af;
    --sp-gray-400: #d1d5db;
    --sp-gray-300: #e5e7eb;
    --sp-gray-200: #f3f4f6;
    --sp-gray-100: #f9fafb;
    --sp-white: #ffffff;
    
    --sp-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --sp-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --sp-shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --sp-shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --sp-shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    --sp-radius-sm: 8px;
    --sp-radius: 12px;
    --sp-radius-lg: 16px;
    --sp-radius-xl: 24px;
    --sp-radius-full: 9999px;
    
    --sp-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================================================
   ОСНОВНАЯ ОБЕРТКА
   ================================================ */
.premium-single-program {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    -webkit-font-smoothing: antialiased;
    background: var(--sp-gray-100);
}

/* ================================================
   HERO SECTION
   ================================================ */
.premium-program-hero {
    position: relative;
    padding: 0;
    overflow: hidden;
    min-height: 550px;
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.hero-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
}

.hero-circle-1 {
    width: 600px;
    height: 600px;
    top: -250px;
    right: -150px;
    animation: float 20s ease-in-out infinite;
}

.hero-circle-2 {
    width: 400px;
    height: 400px;
    bottom: -150px;
    left: 5%;
    animation: float 15s ease-in-out infinite reverse;
}

.hero-circle-3 {
    width: 250px;
    height: 250px;
    top: 40%;
    left: -80px;
    animation: float 18s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 120px;
}

.hero-container {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 40px 80px;
    display: flex;
    gap: 60px;
    align-items: center;
}

.hero-content {
    flex: 1;
    min-width: 0;
}

/* Breadcrumbs */
.hero-breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.hero-breadcrumbs a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--sp-transition);
}

.hero-breadcrumbs a:hover {
    color: var(--sp-white);
}

.breadcrumb-separator {
    color: rgba(255, 255, 255, 0.5);
    display: flex;
}

.breadcrumb-current {
    color: var(--sp-white);
    font-weight: 500;
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Hero Tags */
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--sp-radius-full);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--sp-white);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-tag-discount {
    background: rgba(255, 215, 0, 0.3);
    border-color: rgba(255, 215, 0, 0.5);
}

.hero-tag svg {
    width: 14px;
    height: 14px;
}

/* Hero Title */
.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    color: var(--sp-white);
    margin: 0 0 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 32px;
    line-height: 1.6;
    max-width: 600px;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.hero-stat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--sp-radius);
    border: 1px solid rgba(255, 255, 255, 0.15);
    min-width: 160px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--sp-radius-sm);
    color: var(--sp-white);
}

.stat-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stat-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--sp-white);
}

.stat-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Hero Visual */
.hero-visual {
    width: 450px;
    flex-shrink: 0;
}

.hero-visual-card {
    position: relative;
    border-radius: var(--sp-radius-xl);
    overflow: hidden;
    box-shadow: var(--sp-shadow-xl);
    background: rgba(255, 255, 255, 0.1);
}

.hero-image,
.hero-image-placeholder {
    aspect-ratio: 4 / 3;
    overflow: hidden;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.3);
}

.hero-price-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.5) 50%, transparent 100%);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.price-discount {
    position: absolute;
    top: -60px;
    right: 16px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #ffd700 0%, #ffb347 100%);
    color: var(--sp-gray-900);
    font-size: 1rem;
    font-weight: 700;
    border-radius: var(--sp-radius-full);
    box-shadow: var(--sp-shadow-md);
}

.price-content {
    display: flex;
    align-items: baseline;
    gap: 12px;
}

.price-old {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: line-through;
}

.price-current {
    font-size: 2rem;
    font-weight: 800;
    color: var(--sp-white);
}

.hero-enroll-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 28px;
    background: var(--sp-white);
    color: var(--sp-primary);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--sp-radius);
    cursor: pointer;
    transition: var(--sp-transition);
}

.hero-enroll-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--sp-shadow-lg);
}

/* ================================================
   MAIN CONTENT
   ================================================ */
.premium-program-content {
    background: var(--sp-gray-100);
    padding: 60px 0;
}

.content-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.content-main {
    flex: 1;
    min-width: 0;
}

/* ================================================
   CONTENT SECTIONS
   ================================================ */
.content-section {
    background: var(--sp-white);
    border-radius: var(--sp-radius-xl);
    padding: 40px;
    margin-bottom: 32px;
    box-shadow: var(--sp-shadow);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.section-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--sp-radius);
    flex-shrink: 0;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sp-gray-900);
    margin: 0;
}

.section-content {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--sp-gray-700);
}

.section-content p {
    margin-bottom: 16px;
}

.section-content p:last-child {
    margin-bottom: 0;
}

.section-content h3,
.section-content h4 {
    color: var(--sp-gray-900);
    margin-top: 24px;
    margin-bottom: 12px;
}

.section-content ul,
.section-content ol {
    padding-left: 24px;
    margin-bottom: 16px;
}

.section-content li {
    margin-bottom: 8px;
}

.program-description {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--sp-gray-700);
}

/* Highlights Section */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.highlight-card {
    padding: 28px;
    background: var(--sp-gray-50);
    border-radius: var(--sp-radius-lg);
    transition: var(--sp-transition);
}

.highlight-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--sp-shadow-md);
}

.highlight-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--sp-radius);
    color: var(--sp-white);
    margin-bottom: 20px;
}

.highlight-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--sp-gray-900);
    margin: 0 0 8px;
}

.highlight-text {
    font-size: 0.9375rem;
    color: var(--sp-gray-600);
    margin: 0;
    line-height: 1.6;
}

/* Courses List Section */
.courses-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.course-list-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px 24px;
    background: var(--sp-gray-50);
    border-radius: var(--sp-radius-lg);
    transition: var(--sp-transition);
    border: 1px solid transparent;
}

.course-list-item:hover {
    background: var(--sp-white);
    border-color: var(--sp-gray-200);
    box-shadow: var(--sp-shadow);
}

.course-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--sp-primary) 0%, var(--sp-secondary) 100%);
    border-radius: var(--sp-radius);
    flex-shrink: 0;
}

.course-number span {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--sp-white);
}

.course-list-content {
    flex: 1;
    min-width: 0;
}

.course-list-title {
    font-size: 1.0625rem;
    font-weight: 600;
    margin: 0 0 6px;
}

.course-list-title a {
    color: var(--sp-gray-900);
    text-decoration: none;
    transition: var(--sp-transition);
}

.course-list-title a:hover {
    color: var(--sp-primary);
}

.course-list-excerpt {
    font-size: 0.875rem;
    color: var(--sp-gray-500);
    margin: 0 0 10px;
    line-height: 1.5;
}

.course-list-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8125rem;
    color: var(--sp-gray-500);
}

.meta-item svg {
    color: var(--sp-gray-400);
}

.course-list-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sp-white);
    border: 1px solid var(--sp-gray-200);
    border-radius: 50%;
    color: var(--sp-gray-400);
    text-decoration: none;
    transition: var(--sp-transition);
    flex-shrink: 0;
}

.course-list-link:hover {
    background: var(--sp-primary);
    border-color: var(--sp-primary);
    color: var(--sp-white);
}

/* Teachers Section */
.teachers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.teacher-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--sp-gray-50);
    border-radius: var(--sp-radius-lg);
    text-decoration: none;
    transition: var(--sp-transition);
}

.teacher-card:hover {
    background: var(--sp-white);
    box-shadow: var(--sp-shadow);
}

.teacher-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

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

.teacher-avatar .avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sp-gray-200);
    color: var(--sp-gray-400);
}

.teacher-info {
    flex: 1;
    min-width: 0;
}

.teacher-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--sp-gray-900);
    margin: 0 0 4px;
}

.teacher-position {
    font-size: 0.8125rem;
    color: var(--sp-gray-500);
    margin: 0;
}

.teacher-arrow {
    color: var(--sp-gray-400);
    transition: var(--sp-transition);
}

.teacher-card:hover .teacher-arrow {
    color: var(--sp-primary);
    transform: translateX(4px);
}

/* ================================================
   SIDEBAR
   ================================================ */
.content-sidebar {
    width: 380px;
    flex-shrink: 0;
    position: sticky;
    top: 20px;
}

.sidebar-card {
    background: var(--sp-white);
    border-radius: var(--sp-radius-xl);
    overflow: hidden;
    margin-bottom: 24px;
    box-shadow: var(--sp-shadow);
}

/* Info Card */
.info-card .card-header {
    padding: 20px 24px;
    color: var(--sp-white);
}

.info-card .card-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    color: var(--sp-white);
}

.info-card .card-body {
    padding: 24px;
}

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

.info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 0;
    border-bottom: 1px solid var(--sp-gray-200);
}

.info-item:last-child {
    border-bottom: none;
}

.info-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sp-gray-100);
    border-radius: var(--sp-radius-sm);
    color: var(--sp-gray-500);
    flex-shrink: 0;
}

.info-label {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--sp-gray-600);
}

.info-value {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--sp-gray-900);
}

.info-value-yes {
    color: var(--sp-success);
}

/* Price Card */
.price-card {
    padding: 28px;
    text-align: center;
    position: relative;
}

.price-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 6px 14px;
    background: linear-gradient(135deg, #ffd700 0%, #ffb347 100%);
    color: var(--sp-gray-900);
    font-size: 0.9375rem;
    font-weight: 700;
    border-radius: var(--sp-radius-full);
}

.price-wrapper {
    margin-bottom: 20px;
}

.price-card .price-old {
    display: block;
    font-size: 1.125rem;
    color: var(--sp-gray-400);
    text-decoration: line-through;
    margin-bottom: 4px;
}

.price-card .price-current {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--sp-gray-900);
    letter-spacing: -0.02em;
}

.enroll-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--sp-primary) 0%, var(--sp-secondary) 50%, var(--sp-tertiary) 100%);
    color: var(--sp-white);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--sp-radius);
    cursor: pointer;
    transition: var(--sp-transition);
    box-shadow: 0 4px 14px rgba(104, 32, 45, 0.4);
}

.enroll-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(104, 32, 45, 0.5);
}

/* Spec Card */
.spec-card {
    padding: 24px;
}

.card-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--sp-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 16px;
}

.spec-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--sp-gray-50);
    border-radius: var(--sp-radius);
    font-size: 0.9375rem;
    color: var(--sp-gray-700);
    text-decoration: none;
    transition: var(--sp-transition);
}

.spec-item:hover {
    background: rgba(104, 32, 45, 0.08);
    color: var(--sp-primary);
}

.spec-item svg {
    color: var(--sp-gray-400);
    flex-shrink: 0;
}

/* Share Card */
.share-card {
    padding: 24px;
}

.share-buttons {
    display: flex;
    gap: 12px;
}

.share-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--sp-radius);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--sp-transition);
}

.share-telegram {
    background: #229ED9;
    color: var(--sp-white);
}

.share-telegram:hover {
    background: #1a8ac4;
}

.share-vk {
    background: #4C75A3;
    color: var(--sp-white);
}

.share-vk:hover {
    background: #3d6089;
}

.share-copy {
    background: var(--sp-gray-100);
    color: var(--sp-gray-600);
}

.share-copy:hover {
    background: var(--sp-gray-200);
    color: var(--sp-gray-900);
}

/* ================================================
   CTA SECTION
   ================================================ */
.premium-program-cta {
    position: relative;
    overflow: hidden;
    padding: 80px 40px;
}

.cta-decoration {
    position: absolute;
    top: 50%;
    right: 5%;
    transform: translateY(-50%);
    width: 400px;
    height: 400px;
    opacity: 0.5;
    pointer-events: none;
}

.cta-container {
    position: relative;
    z-index: 2;
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
}

.cta-content {
    flex: 1;
}

.cta-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--sp-white);
    margin: 0 0 12px;
}

.cta-text {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.85);
    margin: 0;
    max-width: 500px;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 20px 40px;
    background: var(--sp-white);
    color: var(--sp-primary);
    font-size: 1.0625rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--sp-radius);
    box-shadow: var(--sp-shadow-lg);
    transition: var(--sp-transition);
    flex-shrink: 0;
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--sp-shadow-xl);
}

.cta-btn svg {
    transition: var(--sp-transition);
}

.cta-btn:hover svg {
    transform: translateX(4px);
}

/* ================================================
   RESPONSIVE
   ================================================ */
@media (max-width: 1200px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }
    
    .hero-content {
        max-width: 700px;
    }
    
    .hero-breadcrumbs,
    .hero-tags,
    .hero-stats {
        justify-content: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-visual {
        width: 100%;
        max-width: 500px;
    }
    
    .content-container {
        flex-direction: column;
    }
    
    .content-sidebar {
        width: 100%;
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .content-sidebar .sidebar-card {
        margin-bottom: 0;
    }
    
    .info-card {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .premium-program-hero {
        min-height: auto;
    }
    
    .hero-container {
        padding: 40px 20px 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-tags {
        gap: 8px;
    }
    
    .hero-tag {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
    
    .hero-stats {
        gap: 12px;
    }
    
    .hero-stat {
        padding: 12px 16px;
        min-width: auto;
        flex: 1 1 calc(50% - 6px);
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
    }
    
    .stat-value {
        font-size: 1rem;
    }
    
    .content-container {
        padding: 0 20px;
    }
    
    .content-section {
        padding: 24px;
        border-radius: var(--sp-radius-lg);
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    .highlights-grid {
        grid-template-columns: 1fr;
    }
    
    .teachers-grid {
        grid-template-columns: 1fr;
    }
    
    .content-sidebar {
        grid-template-columns: 1fr;
    }
    
    .info-card {
        grid-column: span 1;
    }
    
    .cta-container {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-title {
        font-size: 1.75rem;
    }
    
    .cta-text {
        max-width: none;
    }
    
    .premium-program-cta {
        padding: 60px 20px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-stats {
        flex-direction: column;
    }
    
    .hero-stat {
        flex: none;
        width: 100%;
    }
    
    .course-list-item {
        flex-wrap: wrap;
        gap: 16px;
    }
    
    .course-number {
        width: 40px;
        height: 40px;
    }
    
    .course-list-link {
        width: 100%;
        border-radius: var(--sp-radius);
    }
    
    .price-card .price-current {
        font-size: 2rem;
    }
}

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

.content-section {
    animation: fadeInUp 0.5s ease backwards;
}

.content-section:nth-child(1) { animation-delay: 0.1s; }
.content-section:nth-child(2) { animation-delay: 0.2s; }
.content-section:nth-child(3) { animation-delay: 0.3s; }
.content-section:nth-child(4) { animation-delay: 0.4s; }

.sidebar-card {
    animation: fadeInUp 0.5s ease backwards;
    animation-delay: 0.3s;
}

.highlight-card {
    animation: fadeInUp 0.4s ease backwards;
}

.highlight-card:nth-child(1) { animation-delay: 0.2s; }
.highlight-card:nth-child(2) { animation-delay: 0.3s; }
.highlight-card:nth-child(3) { animation-delay: 0.4s; }
.highlight-card:nth-child(4) { animation-delay: 0.5s; }

.course-list-item {
    animation: fadeInUp 0.4s ease backwards;
}

.course-list-item:nth-child(1) { animation-delay: 0.1s; }
.course-list-item:nth-child(2) { animation-delay: 0.15s; }
.course-list-item:nth-child(3) { animation-delay: 0.2s; }
.course-list-item:nth-child(4) { animation-delay: 0.25s; }
.course-list-item:nth-child(5) { animation-delay: 0.3s; }
.course-list-item:nth-child(6) { animation-delay: 0.35s; }
.course-list-item:nth-child(7) { animation-delay: 0.4s; }
.course-list-item:nth-child(8) { animation-delay: 0.45s; }
.course-list-item:nth-child(9) { animation-delay: 0.5s; }
.course-list-item:nth-child(10) { animation-delay: 0.55s; }