* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    color: #fff;
    line-height: 1.6;
    overflow-x: hidden;
}

.page-wrapper {
    position: relative;
    min-height: 100vh;
}

.background-pattern {
    position: fixed;
    inset: 0;
    opacity: 0.05;
    background-image: radial-gradient(circle at 25px 25px, rgba(255, 255, 255, 0.2) 2%, transparent 0%), 
                      radial-gradient(circle at 75px 75px, rgba(255, 255, 255, 0.2) 2%, transparent 0%);
    background-size: 100px 100px;
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(102, 126, 234, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-icon {
    width: 2rem;
    height: 2rem;
    color: #fff;
}

.nav-brand {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
}

.nav-center {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #fff;
    transition: width 0.3s;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.btn-primary {
    padding: 0.75rem 1.75rem;
    background: #fff;
    color: #667eea;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary.large {
    padding: 1.125rem 2.5rem;
    font-size: 1.05rem;
}

.btn-primary.small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-secondary {
    padding: 0.75rem 1.75rem;
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: #fff;
    color: #667eea;
}

.btn-primary.full-width,
.btn-secondary.full-width {
    width: 100%;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-name {
    font-weight: 500;
}

.user-avatar {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

/* Hero */
.hero-section {
    position: relative;
    padding: 6rem 3rem;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: linear-gradient(135deg, #ffeaa7, #fdcb6e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2.5rem;
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.btn-play {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.125rem 2rem;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    transition: all 0.3s;
}

.btn-play:hover {
    background: rgba(255, 255, 255, 0.2);
}

.play-icon {
    font-size: 1.25rem;
}

.video-preview {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.video-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.video-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-preview:hover .video-overlay {
    opacity: 1;
}

.play-btn {
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    color: #667eea;
    font-size: 2rem;
    cursor: pointer;
    transition: transform 0.3s;
}

.play-btn:hover {
    transform: scale(1.1);
}

.video-badge {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    padding: 0.75rem 1.25rem;
    border-radius: 50px;
    font-size: 0.875rem;
}

/* Courses Section */
.courses-section {
    padding: 6rem 3rem;
    background: rgba(255, 255, 255, 0.05);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
}

.section-title.centered {
    text-align: center;
    margin-bottom: 3rem;
}

.view-all {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s;
    display: inline-block;
}

.view-all:hover {
    transform: translateX(5px);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.course-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    color: #333;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

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

.course-image img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.course-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    background: #667eea;
    color: #fff;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.course-badge.new {
    background: #00b894;
}

.course-overlay {
    position: absolute;
    inset: 0;
    background: rgba(102, 126, 234, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.course-card:hover .course-overlay {
    opacity: 1;
}

.preview-btn {
    padding: 0.75rem 2rem;
    background: #fff;
    color: #667eea;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
}

.course-info {
    padding: 1.5rem;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.course-category {
    font-size: 0.875rem;
    font-weight: 600;
    color: #667eea;
}

.course-level {
    padding: 0.25rem 0.75rem;
    background: #f0f0f0;
    border-radius: 4px;
    font-size: 0.75rem;
    color: #666;
}

.course-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: #222;
}

.course-description {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.course-stats {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
    font-size: 0.875rem;
    color: #666;
}

.course-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-price {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.price-old {
    text-decoration: line-through;
    color: #999;
    font-size: 0.95rem;
}

.price-new {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
}

.btn-enroll {
    padding: 0.625rem 1.5rem;
    background: #667eea;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-enroll:hover {
    background: #764ba2;
}

/* Features */
.features-section {
    padding: 6rem 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
}

/* Demo Section */
.demo-section {
    padding: 6rem 3rem;
    background: rgba(0, 0, 0, 0.1);
}

.demo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.demo-tag {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.demo-content h2 {
    font-size: 2.75rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
}

.demo-content p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.demo-features {
    list-style: none;
    margin-bottom: 2.5rem;
}

.demo-features li {
    padding: 0.75rem 0;
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.9);
}

.platform-preview {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.preview-header {
    padding: 1rem;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.preview-dots {
    display: flex;
    gap: 0.5rem;
}

.preview-dots span {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
}

.preview-content {
    padding: 2rem;
}

.video-placeholder {
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.play-circle {
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.progress-bar-demo {
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffeaa7, #fdcb6e);
    border-radius: 10px;
}

/* Pricing */
.pricing-section {
    padding: 6rem 3rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 2.5rem;
    color: #333;
    position: relative;
    transition: all 0.3s;
}

.pricing-card.featured {
    transform: scale(1.05);
    background: #fff;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.popular-badge {
    position: absolute;
    top: -0.75rem;
    right: 2rem;
    padding: 0.5rem 1.25rem;
    background: linear-gradient(135deg, #ffeaa7, #fdcb6e);
    color: #333;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.pricing-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    color: #667eea;
}

.price {
    margin-bottom: 2rem;
}

.price-amount {
    font-size: 3.5rem;
    font-weight: 700;
    color: #222;
}

.price-period {
    color: #666;
    font-size: 1.125rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    color: #666;
    border-bottom: 1px solid #eee;
}

/* Footer */
.footer {
    background: rgba(0, 0, 0, 0.2);
    padding: 4rem 3rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.footer-icon {
    width: 1.75rem;
    height: 1.75rem;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

.footer-col h4 {
    margin-bottom: 1.25rem;
    font-size: 1.125rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.75rem;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Course Player */
.course-player-wrapper {
    display: grid;
    grid-template-columns: 350px 1fr;
    min-height: calc(100vh - 80px);
}

.player-sidebar {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    overflow-y: auto;
}

.course-header {
    padding: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.course-header h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.progress-percent {
    font-weight: 700;
    color: #ffeaa7;
}

.progress-bar {
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
}

.lessons-list {
    padding: 1rem;
}

.lesson-section {
    margin-bottom: 1.5rem;
}

.section-header {
    display: flex;
    justify-content: space-between;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.section-header h3 {
    font-size: 1rem;
}

.section-duration {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

.lesson-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s;
}

.lesson-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.lesson-item.active {
    background: rgba(102, 126, 234, 0.3);
}

.lesson-item.completed {
    opacity: 0.7;
}

.lesson-item.locked {
    opacity: 0.5;
    cursor: not-allowed;
}

.lesson-check,
.lesson-play,
.lesson-icon {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.lesson-check {
    background: #00b894;
}

.lesson-play {
    background: rgba(255, 255, 255, 0.2);
}

.lesson-item.quiz .lesson-icon {
    background: #fdcb6e;
}

.lesson-info {
    flex: 1;
}

.lesson-info h4 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}

.lesson-info span {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.6);
}

.player-main {
    background: rgba(255, 255, 255, 0.98);
    color: #333;
}

.video-container {
    background: #000;
}

.video-player {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
}

.video-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 5rem;
    height: 5rem;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    border: none;
    color: #667eea;
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 10;
}

.video-play-btn:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 1rem;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-player:hover .video-controls {
    opacity: 1;
}

.video-progress {
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    margin-bottom: 0.75rem;
    border-radius: 10px;
    cursor: pointer;
}

.video-progress-filled {
    height: 100%;
    background: #667eea;
    border-radius: 10px;
}

.controls-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.control-btn {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
}

.time-display {
    color: #fff;
    font-size: 0.875rem;
}

.spacer {
    flex: 1;
}

.content-tabs {
    display: flex;
    gap: 0.5rem;
    padding: 1.5rem 2rem 0;
    border-bottom: 1px solid #e0e0e0;
}

.tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    color: #666;
    font-weight: 600;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab-content {
    display: none;
    padding: 2rem;
}

.tab-content.active {
    display: block;
}

.lesson-content h2 {
    font-size: 2rem;
    color: #222;
    margin-bottom: 1rem;
}

.lesson-content h3 {
    font-size: 1.5rem;
    color: #333;
    margin: 2rem 0 1rem;
}

.lesson-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.lesson-content ul {
    margin-left: 1.5rem;
    color: #666;
    line-height: 2;
}

/* Notes */
.notes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.note-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #f8f8f8;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.note-time {
    padding: 0.5rem 1rem;
    background: #667eea;
    color: #fff;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    height: fit-content;
}

.note-content p {
    color: #333;
    margin-bottom: 0.5rem;
}

.note-date {
    color: #999;
    font-size: 0.875rem;
}

/* Quiz */
.quiz-header {
    margin-bottom: 2.5rem;
}

.quiz-header h2 {
    font-size: 2rem;
    color: #222;
    margin-bottom: 0.75rem;
}

.quiz-info {
    display: flex;
    gap: 1rem;
    color: #666;
}

.question-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e0e0e0;
}

.question-number {
    color: #667eea;
    font-weight: 600;
}

.quiz-question h3 {
    font-size: 1.5rem;
    color: #222;
    margin-bottom: 2rem;
}

.quiz-option {
    display: block;
    padding: 1.25rem;
    background: #f8f8f8;
    border: 2px solid transparent;
    border-radius: 8px;
    margin-bottom: 1rem;
    cursor: pointer;
    position: relative;
    transition: all 0.3s;
}

.quiz-option:hover {
    background: #f0f0f0;
    border-color: #667eea;
}

.quiz-option input {
    position: absolute;
    opacity: 0;
}

.quiz-option input:checked + .option-text {
    font-weight: 600;
    color: #667eea;
}

.option-text {
    color: #333;
}

.quiz-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
}

.check-answer {
    margin-left: auto;
}

.quiz-results {
    text-align: center;
    padding: 3rem;
}

.results-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
}

.results-score {
    margin: 2rem 0;
}

.score-value {
    font-size: 4rem;
    font-weight: 700;
    color: #00b894;
    display: block;
    margin-bottom: 1rem;
}

.results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Resources */
.resource-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.resource-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: #f8f8f8;
    border-radius: 8px;
}

.resource-icon {
    font-size: 2.5rem;
}

.resource-info {
    flex: 1;
}

.resource-info h4 {
    color: #222;
    margin-bottom: 0.25rem;
}

.resource-info span {
    color: #999;
    font-size: 0.875rem;
}

.btn-download {
    padding: 0.75rem 1.5rem;
    background: #667eea;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid,
    .demo-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-grid,
    .features-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .course-player-wrapper {
        grid-template-columns: 1fr;
    }
    
    .player-sidebar {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-center {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .courses-grid,
    .features-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
}