/* ===== CSS Variables ===== */
:root {
    --primary: #10B981;
    --primary-dark: #059669;
    --primary-light: rgba(16, 185, 129, 0.1);

    --background: #FAF9F6;
    --background-dark: #1A1A1A;
    --card-background: #FFFFFF;
    --card-background-dark: #252525;

    --text-primary: #1A1A1A;
    --text-secondary: #6B6B6B;
    --text-tertiary: #9B9B9B;
    --text-on-dark: #FFFFFF;

    --border: #E8E8E8;
    --shadow: rgba(0, 0, 0, 0.08);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-xxxl: 64px;
}

/* ===== Reset & Base ===== */
*, *::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-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(250, 249, 246, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-image {
    width: 42px;
    height: 42px;
    border-radius: 10px;
    object-fit: cover;
}

.logo-image-small {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    padding: 120px var(--spacing-lg) var(--spacing-xxxl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xxxl);
    max-width: 1200px;
    margin: 0 auto;
}

.hero-content {
    flex: 1;
    max-width: 500px;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.app-store-section {
    display: flex;
    justify-content: center;
    padding: 0 var(--spacing-lg) var(--spacing-xxl);
}

.app-store-badge img {
    height: 54px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.app-store-badge:hover img {
    transform: scale(1.05);
    opacity: 0.9;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    position: relative;
    width: 280px;
}

.phone-mockup img {
    width: 100%;
}

/* ===== Stats Section ===== */
.stats {
    background: var(--background-dark);
    padding: var(--spacing-xxxl) var(--spacing-lg);
}

.stats-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 1rem;
    color: var(--text-on-dark);
    opacity: 0.8;
}

.stat-source {
    display: block;
    font-size: 0.75rem;
    color: var(--text-on-dark);
    opacity: 0.6;
    margin-top: 4px;
    text-decoration: underline;
    transition: opacity 0.2s ease;
}

.stat-source:hover {
    opacity: 1;
    color: var(--primary);
}

/* ===== Quick Stats Section ===== */
.quick-stats {
    background: var(--background);
    padding: var(--spacing-xl) var(--spacing-lg);
}

.quick-stats-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.quick-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    text-align: center;
    padding: var(--spacing-md);
    background: var(--card-background);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.quick-stat-icon {
    font-size: 2rem;
}

.quick-stat-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== Section Header ===== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-xxl);
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ===== Features Section ===== */
.features {
    padding: var(--spacing-xxxl) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--card-background);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ===== Screenshots Section ===== */
.screenshots {
    background: var(--background-dark);
    padding: var(--spacing-xxxl) var(--spacing-lg);
}

.screenshots .section-header h2,
.screenshots .section-header p {
    color: var(--text-on-dark);
}

.screenshots .section-header p {
    opacity: 0.7;
}

.screenshots-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.screenshot-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.screenshot-item img {
    width: 220px;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.screenshot-item:hover img {
    transform: scale(1.03);
}

.screenshot-label {
    color: var(--primary);
    font-weight: 600;
    font-size: 1rem;
}

/* ===== Pricing Section ===== */
.pricing {
    padding: var(--spacing-xxxl) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--card-background);
    border: 2px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--shadow);
}

.pricing-premium {
    border-color: var(--primary);
    box-shadow: 0 8px 16px var(--shadow);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    right: var(--spacing-lg);
    background: var(--primary);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.pricing-price {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.price-period {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-xl);
}

.pricing-features li {
    padding: var(--spacing-sm) 0;
    font-size: 0.95rem;
}

.feature-included {
    color: var(--text-primary);
}

.feature-excluded {
    color: var(--text-tertiary);
}

.pricing-cta-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: var(--spacing-lg);
}

.pricing-button {
    display: block;
    width: 100%;
    background: var(--primary);
    color: white;
    text-align: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    transition: background 0.2s ease, transform 0.2s ease;
}

.pricing-button:hover {
    background: var(--primary-dark);
    transform: scale(1.02);
}

.pricing-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: var(--spacing-md);
    font-style: italic;
}

/* ===== CTA Section ===== */
.cta {
    padding: var(--spacing-xxxl) var(--spacing-lg);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cta h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ===== Footer ===== */
.footer {
    background: var(--background-dark);
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-on-dark);
}

.footer-links {
    display: flex;
    gap: var(--spacing-xl);
}

.footer-links a {
    color: var(--text-on-dark);
    opacity: 0.7;
    font-size: 0.95rem;
    transition: opacity 0.2s ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary);
}

.footer-copyright {
    color: var(--text-on-dark);
    opacity: 0.5;
    font-size: 0.875rem;
}

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 100px;
        gap: var(--spacing-xxl);
    }

    .hero-content {
        max-width: 100%;
    }

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

    .stats-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .quick-stats-container {
        grid-template-columns: 1fr;
    }

    .screenshots-grid {
        flex-wrap: wrap;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }

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

    .hero h1 {
        font-size: 2rem;
    }

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

    .screenshot-item img {
        width: 180px;
    }

    .footer-links {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }
}

/* ===== Legal Pages ===== */
.legal-content {
    padding: 120px var(--spacing-lg) var(--spacing-xxxl);
    min-height: calc(100vh - 200px);
}

.legal-container {
    max-width: 800px;
    margin: 0 auto;
}

.legal-container h1 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.legal-date {
    color: var(--text-tertiary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xxl);
}

.legal-container h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.legal-container p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.legal-container ul {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    line-height: 1.8;
}

.legal-container li {
    margin-bottom: var(--spacing-xs);
}

.legal-container a {
    color: var(--primary);
    transition: opacity 0.2s ease;
}

.legal-container a:hover {
    opacity: 0.8;
}

.legal-container strong {
    color: var(--text-primary);
    font-weight: 600;
}