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

/* Theme Colors from app_theme.dart */
:root {
    /* Primary Colors */
    --primary-500: #6B73FF;
    --primary-400: #8B93FF;
    --primary-600: #4B53DF;
    --primary-700: #3B43CF;
    
    /* Secondary Colors */
    --secondary-500: #FF6B9D;
    --secondary-400: #FF8BB3;
    --secondary-600: #E54B7D;
    
    /* Background Colors */
    --background-primary: #F8F9FA;
    --background-secondary: #FFFFFF;
    --background-tertiary: #F1F3F4;
    --background-overlay: rgba(255, 255, 255, 0.95);
    
    /* Surface Colors */
    --surface-elevated: #FFFFFF;
    --surface-card: #FFFFFF;
    --surface-input: #F5F5F7;
    --surface-hover: #F0F0F2;
    
    /* Text Colors */
    --text-primary: #1A1A1A;
    --text-secondary: #6C7B8A;
    --text-tertiary: #9CA3AF;
    --text-inverse: #FFFFFF;
    --text-muted: #8E9AAF;
    
    /* Accent Colors */
    --accent-success: #34D399;
    --accent-warning: #FBBF24;
    --accent-error: #EF4444;
    --accent-info: #3B82F6;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 32px;
    --spacing-4xl: 40px;
    --spacing-5xl: 48px;
    --spacing-6xl: 64px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-button: 12px;
    --radius-input: 10px;
    --radius-card: 20px;
    
    /* Shadows */
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.15);
    --shadow-button: 0 2px 8px rgba(107, 115, 255, 0.3);
}

body {
    font-family: 'Jost', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-primary);
    font-size: 16px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-2xl);
}

/* Header */
.header {
    background-color: var(--surface-elevated);
    box-shadow: var(--shadow-card);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0;
}

.logo img {
    width: 90px;
    height: 90px;
    margin-top: 5px;
    border-radius: var(--radius-md);
}

.logo h1 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.logo h1 .primary-text {
    color: var(--primary-500);
}

.nav-links {
    display: flex;
    gap: var(--spacing-3xl);
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 16px;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-500);
}

/* Main Content */
main {
    margin-top: 80px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
    color: var(--text-inverse);
    padding: var(--spacing-6xl) 0;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6xl);
    align-items: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-2xl);
}

.highlight {
    color: var(--secondary-400);
}

.hero-description {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: var(--spacing-4xl);
    color: rgba(255, 255, 255, 0.9);
}

.hero-actions {
    display: flex;
    gap: var(--spacing-lg);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius-button);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--text-inverse);
    color: var(--primary-500);
    box-shadow: var(--shadow-button);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(107, 115, 255, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-inverse);
    border: 2px solid var(--text-inverse);
}

.btn-secondary:hover {
    background-color: var(--text-inverse);
    color: var(--primary-500);
}

/* Phone Mockup */
.phone-mockup {
    width: 280px;
    height: 560px;
    background-color: var(--text-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    margin: 0 auto;
    box-shadow: var(--shadow-xl);
}

/* App Mockup Image */
.app-mockup-image {
    width: 100%;
    max-width: 320px;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    margin: 0 auto;
    display: block;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background-color: var(--surface-elevated);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    overflow: hidden;
}

.app-preview {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.post-preview {
    background-color: var(--surface-card);
    border-radius: var(--radius-card);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-card);
}

.post-content p {
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
}

.post-actions {
    display: flex;
    gap: var(--spacing-lg);
    font-size: 12px;
    color: var(--text-secondary);
}

/* Sections */
.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-5xl);
    color: var(--text-primary);
}

/* Features Section */
.features {
    padding: var(--spacing-6xl) 0;
    background-color: var(--surface-elevated);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-3xl);
}

.feature-card {
    background-color: var(--surface-card);
    padding: var(--spacing-3xl);
    border-radius: var(--radius-card);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-lg);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

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

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-6xl) 0;
    background-color: var(--background-primary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-4xl);
}

.step {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-lg);
}

.step-number {
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: var(--text-inverse);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Download Section */
.download {
    padding: var(--spacing-6xl) 0;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
    color: var(--text-inverse);
    text-align: center;
}

.download .section-title {
    color: var(--text-inverse);
}

.download-description {
    font-size: 20px;
    margin-bottom: var(--spacing-4xl);
    color: rgba(255, 255, 255, 0.9);
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2xl);
    flex-wrap: wrap;
}

.download-btn {
    display: inline-block;
    transition: transform 0.3s ease;
    width: 180px;
    height: 60px;
}

.download-btn:hover {
    transform: translateY(-4px);
}

.download-btn img {
    width: 180px;
    height: 60px;
    display: block;
    object-fit: contain;
    border-radius: 8px;
}

/* Footer */
.footer {
    background-color: var(--text-primary);
    color: var(--text-inverse);
    padding: var(--spacing-5xl) 0 var(--spacing-2xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-info h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-inverse);
}

.footer-info p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-inverse);
}

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

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--primary-400);
}

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

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .nav {
        flex-direction: column;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .logo {
        justify-content: center;
    }
    
    .logo img {
        width: 32px;
        height: 32px;
    }
    
    .logo h1 {
        font-size: 24px;
    }
    
    .nav-links {
        gap: var(--spacing-lg);
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-3xl);
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-description {
        font-size: 18px;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
    }

    .app-mockup-image {
        max-width: 280px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-2xl);
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-btn {
        width: 160px;
        height: 50px;
    }
    
    .download-btn img {
        width: 160px;
        height: 50px;
    }
}

@media (max-width: 480px) {
    main {
        margin-top: 120px;
    }
    
    .hero {
        padding: var(--spacing-4xl) 0;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-description {
        font-size: 16px;
    }
    
    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: 14px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .feature-card,
    .download {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .app-mockup-image {
        max-width: 240px;
    }
}