/* CSS Custom Properties */
:root {
    --primary-purple: #8B5CF6;
    --primary-blue: #3B82F6;
    --accent-cyan: #06B6D4;
    --accent-pink: #EC4899;
    --bg-dark: #0F0F1A;
    --bg-card: rgba(255, 255, 255, 0.05);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --gradient-primary: linear-gradient(135deg, var(--primary-purple) 0%, var(--primary-blue) 100%);
    --gradient-bg: linear-gradient(180deg, #0F0F1A 0%, #1a1a2e 100%);
    --border-glass: rgba(255, 255, 255, 0.1);
    --shadow-glow: 0 0 60px rgba(139, 92, 246, 0.3);
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 80px 0;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

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

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

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

/* App Icon */
.app-icon {
    margin-bottom: 24px;
}

.app-icon-image {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    box-shadow: var(--shadow-glow);
}

/* Hero Typography */
.hero-title {
    font-size: 4rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
}

.hero-tagline {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 480px;
    margin-bottom: 32px;
    line-height: 1.7;
}

/* App Store Button */
.app-store-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--text-primary);
    color: var(--bg-dark);
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.app-store-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.2);
}

.apple-logo {
    width: 28px;
    height: 28px;
}

.button-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.button-subtitle {
    font-size: 0.7rem;
    font-weight: 500;
    opacity: 0.8;
    line-height: 1;
}

.button-title {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.2;
}

/* Phone Mockup */
.hero-mockup {
    display: flex;
    justify-content: center;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.phone-frame {
    width: 280px;
    height: 580px;
    background: linear-gradient(145deg, #2a2a3e 0%, #1a1a2e 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 50px 100px rgba(0, 0, 0, 0.5),
        var(--shadow-glow),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: #0F0F1A;
    border-radius: 12px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    border-radius: 32px;
    overflow: hidden;
    position: relative;
}

.screen-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

/* Features Section */
.features {
    padding: 120px 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    letter-spacing: -0.02em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    padding: 32px;
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.feature-title {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-description {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.cta .container {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* Footer */
.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border-glass);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Legal Pages (ToS, Privacy) */
.legal-nav {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-glass);
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
}

.nav-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: white;
}

.legal-content {
    padding: 60px 0;
    min-height: calc(100vh - 200px);
}

.legal-content .container {
    max-width: 800px;
}

.legal-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.legal-content .last-updated {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 48px;
}

.legal-content section {
    margin-bottom: 40px;
}

.legal-content h2 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.legal-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.legal-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.legal-content ul {
    color: var(--text-secondary);
    margin-bottom: 16px;
    padding-left: 24px;
}

.legal-content li {
    margin-bottom: 8px;
    line-height: 1.6;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-content {
        order: 1;
    }

    .hero-mockup {
        order: 2;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .app-icon-placeholder {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-title {
        font-size: 3rem;
    }

    .phone-frame {
        width: 240px;
        height: 500px;
    }

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

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

    .cta-title {
        font-size: 2.25rem;
    }
}

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

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

    .hero-tagline {
        font-size: 1.25rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .phone-frame {
        width: 200px;
        height: 420px;
        border-radius: 32px;
        padding: 10px;
    }

    .phone-frame::before {
        width: 60px;
        height: 20px;
        top: 16px;
    }

    .phone-screen {
        border-radius: 24px;
    }

    .features {
        padding: 80px 0;
    }

    .feature-card {
        padding: 24px;
    }

    .cta {
        padding: 80px 0;
    }

    .cta-title {
        font-size: 1.875rem;
    }

    .cta-description {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }
}

/* Animation delays for feature cards */
.feature-card:nth-child(1) { transition-delay: 0s; }
.feature-card:nth-child(2) { transition-delay: 0.1s; }
.feature-card:nth-child(3) { transition-delay: 0.2s; }
.feature-card:nth-child(4) { transition-delay: 0.3s; }

/* Accessibility - Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .feature-card {
        opacity: 1;
        transform: none;
    }
}