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

:root {
    /* Yeasto iOS App Colors - Light Theme */
    --primary-orange: #F29933; /* primaryOrange */
    --primary-brown: #B36633; /* primaryBrown light */
    --primary-cream: #FAF5EB; /* primaryCream light */
    --primary-gold: #E6CC66; /* primaryGold */
    
    --secondary-green: #4DB366; /* secondaryGreen */
    --secondary-blue: #3380CC; /* secondaryBlue */
    --secondary-purple: #994DB3; /* secondaryPurple */
    
    --neutral-gray: #666673; /* neutralGray */
    --neutral-light-gray: #E6E6E6; /* neutralLightGray light */
    --neutral-dark-gray: #333340; /* neutralDarkGray */
    
    /* System colors */
    --primary-color: var(--primary-orange);
    --primary-hover: var(--primary-brown);
    --secondary-color: var(--secondary-purple);
    --accent-color: var(--primary-gold);
    --success-color: var(--secondary-green);
    --error-color: #E64D4D; /* errorColor */
    
    /* Light theme grays */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    /* Yeasto iOS App Backgrounds - Light Theme */
    --bg-primary: #ffffff; /* surfaceBase */
    --bg-secondary: #f2f2f7; /* surfaceSecondary */
    --bg-tertiary: #ffffff; /* surfaceTertiary */
    --bg-card: var(--bg-secondary);
    --bg-overlay: rgba(0, 0, 0, 0.1);
    
    /* Yeasto iOS App Text - Light Theme */
    --text-primary: #000000; /* system label */
    --text-secondary: #3c3c43; /* secondary label */
    --text-tertiary: #3c3c4399; /* tertiary label */
    --text-inverse: #ffffff;
    
    /* Yeasto iOS App Borders - Light Theme */
    --border-primary: #c6c6c8; /* separator */
    --border-secondary: #d1d1d6; /* system fill */
    --border-focus: var(--primary-orange);
    
    /* Yeasto iOS App System Colors */
    --ios-separator: #c6c6c8;
    --ios-fill: #f2f2f7;
    --ios-grouped-background: #f2f2f7;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Yeasto iOS App Spacing System */
    --spacing-small: 0.75rem; /* 12px - spacingSmall */
    --spacing: 1.25rem; /* 20px - spacing */
    --spacing-large: 2rem; /* 32px - spacingLarge */
    --spacing-xlarge: 3rem; /* 48px - spacingXLarge */
    
    /* Legacy spacing for compatibility */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    
    /* Yeasto iOS App Corner Radius System */
    --radius-small: 0.75rem; /* 12px - cornerRadiusSmall */
    --radius: 1rem; /* 16px - cornerRadius */
    --radius-large: 1.5rem; /* 24px - cornerRadiusLarge */
    --radius-xlarge: 2rem; /* 32px - cornerRadiusXLarge */
    --radius-chip: 1.25rem; /* 20px - chipCornerRadius */
    
    /* Legacy radius for compatibility */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Yeasto iOS App Shadows */
    --shadow-color: rgba(0, 0, 0, 0.1); /* shadowColor light */
    --shadow-sm: 0 1px 2px 0 var(--shadow-color);
    --shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    --shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -2px var(--shadow-color);
    --shadow-xl: 0 20px 25px -5px var(--shadow-color), 0 10px 10px -5px var(--shadow-color);
}

/* Dark theme - Yeasto iOS App Colors */
[data-theme="dark"] {
    /* Yeasto iOS App Colors - Dark Theme */
    --primary-brown: #E0B38C; /* primaryBrown dark - lighter warm brown */
    --primary-cream: #1A1A1E; /* primaryCream dark - dark surface */
    --neutral-light-gray: #292929; /* neutralLightGray dark */
    
    /* Yeasto iOS App Backgrounds - Dark Theme */
    --bg-primary: #000000; /* surfaceBase dark */
    --bg-secondary: #1c1c1e; /* surfaceSecondary dark */
    --bg-tertiary: #2c2c2e; /* surfaceTertiary dark */
    --bg-card: var(--bg-secondary);
    --bg-overlay: rgba(255, 255, 255, 0.1);
    
    /* Yeasto iOS App Text - Dark Theme */
    --text-primary: #ffffff; /* system label dark */
    --text-secondary: #ebebf5; /* secondary label dark */
    --text-tertiary: #ebebf599; /* tertiary label dark */
    --text-inverse: #000000;
    
    /* Yeasto iOS App Borders - Dark Theme */
    --border-primary: #38383a; /* separator dark */
    --border-secondary: #48484a; /* system fill dark */
    --border-focus: var(--primary-orange);
    
    /* Yeasto iOS App System Colors - Dark Theme */
    --ios-separator: #38383a;
    --ios-fill: #1c1c1e;
    --ios-grouped-background: #000000;
    
    /* Yeasto iOS App Shadows - Dark Theme */
    --shadow-color: rgba(0, 0, 0, 0.3); /* shadowColor dark */
    --shadow-sm: 0 1px 2px 0 var(--shadow-color);
    --shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
    --shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -2px var(--shadow-color);
    --shadow-xl: 0 20px 25px -5px var(--shadow-color), 0 10px 10px -5px var(--shadow-color);
}

/* System preference detection - Yeasto iOS App Colors */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        /* Yeasto iOS App Colors - Dark Theme */
        --primary-brown: #E0B38C; /* primaryBrown dark - lighter warm brown */
        --primary-cream: #1A1A1E; /* primaryCream dark - dark surface */
        --neutral-light-gray: #292929; /* neutralLightGray dark */
        
        /* Yeasto iOS App Backgrounds - Dark Theme */
        --bg-primary: #000000; /* surfaceBase dark */
        --bg-secondary: #1c1c1e; /* surfaceSecondary dark */
        --bg-tertiary: #2c2c2e; /* surfaceTertiary dark */
        --bg-card: var(--bg-secondary);
        --bg-overlay: rgba(255, 255, 255, 0.1);
        
        /* Yeasto iOS App Text - Dark Theme */
        --text-primary: #ffffff; /* system label dark */
        --text-secondary: #ebebf5; /* secondary label dark */
        --text-tertiary: #ebebf599; /* tertiary label dark */
        --text-inverse: #000000;
        
        /* Yeasto iOS App Borders - Dark Theme */
        --border-primary: #38383a; /* separator dark */
        --border-secondary: #48484a; /* system fill dark */
        --border-focus: var(--primary-orange);
        
        /* Yeasto iOS App System Colors - Dark Theme */
        --ios-separator: #38383a;
        --ios-fill: #1c1c1e;
        --ios-grouped-background: #000000;
        
        /* Yeasto iOS App Shadows - Dark Theme */
        --shadow-color: rgba(0, 0, 0, 0.3); /* shadowColor dark */
        --shadow-sm: 0 1px 2px 0 var(--shadow-color);
        --shadow-md: 0 4px 6px -1px var(--shadow-color), 0 2px 4px -1px var(--shadow-color);
        --shadow-lg: 0 10px 15px -3px var(--shadow-color), 0 4px 6px -2px var(--shadow-color);
        --shadow-xl: 0 20px 25px -5px var(--shadow-color), 0 10px 10px -5px var(--shadow-color);
    }
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    z-index: 1000;
    transition: all 0.3s ease;
}

[data-theme="dark"] .nav {
    background: rgba(0, 0, 0, 0.95) !important;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .nav {
        background: rgba(0, 0, 0, 0.95) !important;
    }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: var(--spacing-8);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--bg-overlay);
    color: var(--primary-color);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.theme-toggle:hover svg {
    transform: scale(1.1);
}

.theme-toggle .sun-icon {
    display: block;
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon,
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-toggle .sun-icon {
        display: none;
    }
}

[data-theme="dark"] .theme-toggle .moon-icon,
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .theme-toggle .moon-icon {
        display: block;
    }
}

/* Hero Section */
.hero {
    padding: 120px 0 var(--spacing-24);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    transition: background 0.3s ease;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-6);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
    flex-wrap: wrap;
}

/* Buttons - Yeasto iOS App Style */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-small) var(--spacing);
    border-radius: var(--radius); /* 16px - buttonCornerRadius */
    font-weight: 600;
    text-decoration: none;
    transition: all 0.4s ease; /* animationDuration */
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    min-height: 52px; /* buttonHeight */
    font-family: var(--font-family);
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-primary);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* Phone Mockup */
.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    margin: 0 auto;
    background: var(--gray-900);
    border-radius: 40px;
    padding: 20px;
    box-shadow: var(--shadow-xl);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-card);
    border-radius: 30px;
    overflow: hidden;
    position: relative;
    transition: background-color 0.3s ease;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    border-radius: 30px;
}

.app-preview {
    padding: var(--spacing-6);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.app-header {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: 2px solid var(--border-primary);
}

.app-content {
    flex: 1;
}

.recipe-card {
    background: var(--bg-secondary);
    border-radius: var(--radius); /* 16px - cornerRadius */
    padding: var(--spacing);
    border: 1px solid var(--border-primary);
    transition: background-color 0.4s ease, border-color 0.4s ease; /* animationDuration */
    box-shadow: 0 2px 8px var(--shadow-color); /* cardElevation */
}

.recipe-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.ingredient-list {
    margin-bottom: var(--spacing-4);
}

.ingredient {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-1);
}

.fermentation-timer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--primary-orange); /* primaryOrange */
    color: white;
    padding: var(--spacing-small);
    border-radius: var(--radius-small); /* 12px - cornerRadiusSmall */
}

.timer-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.timer-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

/* Sections */
.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: var(--spacing-12);
}

/* Features Section */
.features {
    padding: var(--spacing-24) 0;
    background: var(--bg-primary);
    transition: background-color 0.3s ease;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-8);
}

.feature-card {
    text-align: center;
    padding: var(--spacing-large);
    border-radius: var(--radius-large); /* 24px - cornerRadiusLarge */
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    transition: all 0.4s ease; /* animationDuration */
    box-shadow: 0 2px 8px var(--shadow-color); /* cardElevation */
}

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

.feature-card:hover .feature-icon {
    background: var(--primary-brown);
    transform: scale(1.05);
}

.feature-icon {
    margin-bottom: var(--spacing);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: var(--radius-large);
    background: var(--primary-orange);
    color: white;
    margin-left: auto;
    margin-right: auto;
    transition: all 0.4s ease; /* animationDuration */
}

.feature-icon .sf-symbol {
    width: 40px;
    height: 40px;
    stroke-width: 2.5;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

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

/* Screenshots Preview */
.screenshots-preview {
    padding: var(--spacing-24) 0;
    background: var(--bg-secondary);
    transition: background-color 0.3s ease;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.screenshot-item {
    aspect-ratio: 9/16;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.screenshot-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.screenshots-cta {
    text-align: center;
}

/* TestFlight Section */
.testflight-section {
    padding: var(--spacing-24) 0;
    background: var(--bg-primary);
    transition: background-color 0.3s ease;
}

.testflight-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.testflight-description {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
    line-height: 1.6;
}

.testflight-actions {
    margin-bottom: var(--spacing-12);
}

.testflight-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-small);
    font-size: var(--font-size-lg);
    font-weight: 600;
    padding: var(--spacing) var(--spacing-large);
    border-radius: var(--radius-large);
    text-decoration: none;
    transition: all 0.4s ease;
    box-shadow: var(--shadow-md);
}

.testflight-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.testflight-note {
    margin-top: var(--spacing);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.form-group input {
    flex: 1;
    min-width: 250px;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    background: var(--bg-card);
    color: var(--text-primary);
    transition: border-color 0.3s ease, background-color 0.3s ease, color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-note {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    margin-top: var(--spacing-3);
}

.testflight-benefits {
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
}

.testflight-benefits h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
    text-align: center;
}

.testflight-benefits ul {
    list-style: none;
}

.testflight-benefits li {
    padding: var(--spacing-2) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--spacing-6);
}

.testflight-benefits li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--success-color);
    font-weight: bold;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--text-inverse);
    padding: var(--spacing-16) 0 var(--spacing-8);
    transition: background-color 0.3s ease;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-logo h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: var(--spacing-2);
}

.footer-logo p {
    color: var(--gray-400);
}

.footer-links {
    display: flex;
    gap: var(--spacing-6);
    justify-content: flex-end;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-8);
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .phone-mockup {
        width: 250px;
        height: 500px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .form-group input {
        min-width: auto;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-4);
    }
    
    .hero {
        padding: 100px 0 var(--spacing-16);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
    }
}

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

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

.hero-image {
    animation-delay: 0.2s;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Screenshots Page Styles */
.screenshots-hero {
    padding: 120px 0 var(--spacing-16);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    text-align: center;
    transition: background 0.3s ease;
}

.screenshots-hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.screenshots-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
}

.screenshots-subtitle {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    line-height: 1.6;
}

.screenshots-gallery {
    padding: var(--spacing-24) 0;
    background: var(--bg-primary);
    transition: background-color 0.3s ease;
}

.screenshot-section {
    margin-bottom: var(--spacing-24);
}

.section-subtitle {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-12);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.screenshot-item {
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.screenshot-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.screenshot-item.large {
    grid-column: span 2;
    aspect-ratio: 16/9;
}

.screenshot-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.screenshot-image {
    width: 100%;
    aspect-ratio: 9/16;
    object-fit: contain;
    object-position: center;
    border-radius: var(--radius-xl);
    background: var(--bg-secondary);
    overflow: hidden;
}

.screenshot-caption {
    padding: var(--spacing-4) 0;
    text-align: center;
}

.screenshot-caption h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.screenshot-caption p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.screenshot-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: var(--spacing-6);
    text-align: center;
}

.screenshot-overlay h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.screenshot-overlay p {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

/* Screenshot placeholder backgrounds */
.recipe-builder {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.ingredient-calc {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.method-select {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.live-activity {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.fermentation-timer {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.notifications {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.active-runs {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
}

.run-details {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

.environment {
    background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
}

.recipe-list {
    background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%);
}

.recipe-detail {
    background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
}

.sharing {
    background: linear-gradient(135deg, #fdbb2d 0%, #22c1c3 100%);
}

.settings {
    background: linear-gradient(135deg, #ff8a80 0%, #ea6100 100%);
}

.calculator {
    background: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%);
}

.tools {
    background: linear-gradient(135deg, #fbc2eb 0%, #a6c1ee 100%);
}

/* CTA Section */
.screenshots-cta {
    padding: var(--spacing-24) 0;
    background: var(--bg-secondary);
    text-align: center;
    transition: background-color 0.3s ease;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.cta-content p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Active nav link */
.nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* Responsive adjustments for screenshots */
@media (max-width: 768px) {
    .screenshots-title {
        font-size: var(--font-size-4xl);
    }
    
    .screenshots-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .screenshot-item.large {
        grid-column: span 1;
        aspect-ratio: 9/16;
    }
    
    .screenshots-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .screenshots-hero {
        padding: 100px 0 var(--spacing-12);
    }
    
    .screenshots-title {
        font-size: var(--font-size-3xl);
    }
    
    .screenshots-gallery {
        padding: var(--spacing-16) 0;
    }
    
    .screenshot-section {
        margin-bottom: var(--spacing-16);
    }
}