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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #FF5722 0%, #FF8A50 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-title .highlight {
    color: #FFE0B2;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 400;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.6;
}

.download-buttons {
    display: flex;
    gap: 16px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    min-width: 160px;
    justify-content: center;
}

.download-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.download-btn img {
    width: 24px;
    height: 24px;
}

/* Phone Mockup */
.hero-phone {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #2c2c2c, #1a1a1a);
    border-radius: 40px;
    padding: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-10px) rotate(1deg); }
    66% { transform: translateY(-5px) rotate(-1deg); }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: #000;
    border-radius: 32px;
    overflow: hidden;
    position: relative;
}

.app-interface {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #FF5722, #FF8A50);
    padding: 16px;
    color: white;
}

.status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    font-size: 14px;
    font-weight: 600;
}

.indicators {
    display: flex;
    gap: 4px;
    align-items: center;
}

.signal, .wifi, .battery {
    width: 16px;
    height: 10px;
    background: white;
    border-radius: 2px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.header h3 {
    font-size: 24px;
    font-weight: 700;
}

.profile-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 20px;
}

.stats-card {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 24px;
    display: flex;
    justify-content: space-between;
    margin-bottom: 32px;
}

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

.stat-value {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 12px;
    opacity: 0.8;
}

.progress-ring {
    width: 120px;
    height: 120px;
    margin: 0 auto;
    border: 8px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 3s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Features Section */
.features {
    padding: 120px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 32px;
    border-radius: 24px;
    text-align: center;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #FF5722, #FF8A50);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, #FFE0B2, #FFCC80);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon[data-icon="track"] svg {
    animation: pulse 2s ease-in-out infinite;
}

.feature-icon[data-icon="plan"] svg {
    animation: bounce 2s ease-in-out infinite;
}

.feature-icon[data-icon="social"] svg {
    animation: shake 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

@keyframes shake {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(2deg); }
    75% { transform: rotate(-2deg); }
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 16px;
}

.feature-description {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 120px 0;
    background: white;
}

.screenshot-carousel {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.carousel-container {
    display: flex;
    overflow: hidden;
    border-radius: 24px;
    position: relative;
}

.screenshot-slide {
    min-width: 100%;
    transition: transform 0.5s ease;
    display: flex;
    justify-content: center;
}

.screenshot-slide.active {
    transform: translateX(0);
}

.screenshot-phone {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #2c2c2c, #1a1a1a);
    border-radius: 40px;
    padding: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.screenshot-content {
    width: 100%;
    height: 100%;
    border-radius: 32px;
    padding: 24px 20px;
    color: white;
}

.mock-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-top: 20px;
}

.mock-title {
    font-size: 20px;
    font-weight: 600;
}

.mock-menu {
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 6px;
}

.mock-stats {
    text-align: center;
    margin: 60px 0;
}

.mock-circle {
    width: 120px;
    height: 120px;
    border: 6px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    margin: 0 auto 20px;
    animation: spin 3s linear infinite;
}

.mock-number {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 8px;
}

.mock-label {
    font-size: 16px;
    opacity: 0.8;
}

.mock-workout {
    padding: 20px 0;
}

.mock-exercise {
    background: rgba(255, 255, 255, 0.2);
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 12px;
    font-weight: 500;
}

.mock-social {
    padding: 20px 0;
}

.mock-post {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.2);
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 12px;
}

.mock-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 20px;
}

.mock-content {
    font-size: 14px;
    font-weight: 500;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 40px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 6px;
    background: #ddd;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #FF5722;
    transform: scale(1.2);
}

/* Reviews Section */
.reviews {
    padding: 120px 0;
    background: #f8f9fa;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

.review-card {
    background: white;
    padding: 32px;
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    transition: transform 0.3s ease;
}

.review-card:hover {
    transform: translateY(-4px);
}

.review-stars {
    margin-bottom: 20px;
}

.star {
    color: #FFB300;
    font-size: 20px;
}

.review-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: #555;
    margin-bottom: 24px;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #FF5722, #FF8A50);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: 18px;
}

.author-name {
    font-weight: 600;
    color: #333;
}

.author-title {
    font-size: 0.9rem;
    color: #666;
}

.app-rating {
    text-align: center;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    max-width: 400px;
    margin: 0 auto;
}

.rating-score {
    margin-bottom: 16px;
}

.score {
    font-size: 3rem;
    font-weight: 700;
    color: #FF5722;
    display: block;
    margin-bottom: 8px;
}

.rating-stars {
    margin-bottom: 16px;
}

.rating-stars .star {
    font-size: 24px;
    color: #FFB300;
}

.rating-info p {
    color: #666;
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 80px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.brand-name {
    font-size: 2rem;
    font-weight: 700;
    color: #FF5722;
    margin-bottom: 12px;
}

.brand-tagline {
    font-size: 1.1rem;
    color: #ccc;
    line-height: 1.5;
}

.download-text {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    justify-content: center;
}

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

.footer-links {
    display: flex;
    gap: 40px;
}

.link-group h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: #FF5722;
}

.link-group ul {
    list-style: none;
}

.link-group li {
    margin-bottom: 8px;
}

.link-group a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.link-group a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #999;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .download-buttons {
        flex-direction: column;
        max-width: 300px;
        margin: 0 auto;
    }

    .phone-mockup {
        width: 240px;
        height: 480px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
        gap: 30px;
    }

    .section-title {
        font-size: 2rem;
    }

    .screenshot-phone {
        width: 240px;
        height: 480px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .phone-mockup {
        width: 200px;
        height: 400px;
    }

    .screenshot-phone {
        width: 200px;
        height: 400px;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .review-card {
        padding: 24px;
    }

    .footer-links {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

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

.feature-card {
    animation: fadeInUp 0.6s ease forwards;
}

.feature-card:nth-child(2) {
    animation-delay: 0.2s;
}

.feature-card:nth-child(3) {
    animation-delay: 0.4s;
}

.review-card {
    animation: fadeInUp 0.6s ease forwards;
}

.review-card:nth-child(2) {
    animation-delay: 0.2s;
}

.review-card:nth-child(3) {
    animation-delay: 0.4s;
}