/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --blue-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --delete-color: #ff4757;
    --keep-color: #2ed573;
    --album-color: #ffa502;
    --share-color: #5f27cd;
    --text-dark: #ffffff;
    --text-light: #a0a0a0;
    --bg-dark: #000000;
    --bg-card: #0a0a0a;
    --bg-card-hover: #151515;
    --white: #ffffff;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.7);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--bg-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar {
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-btn-nav {
    padding: 0.6rem 1.5rem;
    background: var(--white);
    color: var(--bg-dark);
    text-decoration: none;
    border-radius: 25px;
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.download-btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 255, 255, 0.3);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--bg-dark);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    margin-bottom: 3rem;
}

.app-store-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--white);
    color: var(--bg-dark);
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.1);
}

.app-store-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 60px rgba(255, 255, 255, 0.2);
    background: #f0f0f0;
}

.app-store-btn.large {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

.apple-icon {
    width: 24px;
    height: 24px;
}

.stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: left;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeInRight 0.8s ease-out;
}

.phone-mockup {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
    animation: float 3s ease-in-out infinite;
}

/* Features Section */
.features {
    padding: 100px 0;
    background: var(--bg-dark);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.feature-card {
    background: var(--bg-card);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
    animation: fadeInUp 0.6s ease-out backwards;
    animation-delay: var(--delay);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
    background: var(--bg-card-hover);
    border-color: rgba(255, 255, 255, 0.2);
}

.feature-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
}

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

.feature-content {
    padding: 2rem;
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.feature-icon.delete {
    background: var(--delete-color);
}

.feature-icon.keep {
    background: var(--keep-color);
}

.feature-icon.album {
    background: var(--album-color);
}

.feature-icon.share {
    background: var(--share-color);
}

.feature-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.feature-content p {
    color: var(--text-light);
    line-height: 1.7;
}


/* CTA Section */
.cta-section {
    padding: 100px 0;
    background: var(--bg-dark);
    color: var(--white);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-content h2 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    color: var(--text-light);
}

.cta-content .app-store-btn {
    background: var(--white);
    color: var(--bg-dark);
}

.cta-content .app-store-btn:hover {
    background: #f0f0f0;
}

.cta-note {
    margin-top: 1rem;
    font-size: 0.95rem;
    color: var(--text-light);
}

/* Footer */
footer {
    padding: 3rem 0;
    background: var(--bg-dark);
    color: var(--white);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-brand p {
    margin-top: 0.5rem;
    opacity: 0.8;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* Responsive Design */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .stats {
        justify-content: center;
    }

    .hero-image {
        order: -1;
    }

    .phone-mockup {
        max-width: 300px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .why-list {
        grid-template-columns: 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }

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

    .cta-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 100px 0 60px;
    }

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

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

    .stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .stat {
        text-align: center;
    }

    .app-store-btn {
        font-size: 1rem;
        padding: 0.9rem 1.75rem;
    }

    .features,
    .why-section,
    .testimonials,
    .cta-section {
        padding: 60px 0;
    }
}