/* ============================================
   Safari Capture Landing Page
   Dark theme with macOS-inspired aesthetics
   ============================================ */

/* CSS Variables */
:root {
    --color-bg-primary: #0d0d0d;
    --color-bg-secondary: #1a1a1a;
    --color-bg-tertiary: #252525;
    --color-accent: #0000FF;
    --color-accent-hover: #0040FF;
    --color-text-primary: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-muted: rgba(255, 255, 255, 0.5);
    --color-border: rgba(255, 255, 255, 0.1);
    --color-glass: rgba(255, 255, 255, 0.05);
    
    --font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;
    
    --border-radius-sm: 8px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --border-radius-full: 50%;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-hover);
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: var(--spacing-sm);
}

h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-xxl) 0;
    background: radial-gradient(ellipse at top, rgba(0, 0, 255, 0.15) 0%, transparent 60%),
                var(--color-bg-primary);
}

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

.hero-content {
    text-align: left;
}

.app-icon {
    width: 120px;
    height: 120px;
    margin-bottom: var(--spacing-lg);
    border-radius: 22%;
    box-shadow: 0 20px 60px rgba(0, 0, 255, 0.3);
}

.hero h1 {
    margin-bottom: var(--spacing-sm);
}

.tagline {
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    max-width: 450px;
}

.app-store-badge {
    display: inline-block;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

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

.badge-img {
    height: 50px;
    width: auto;
    display: block;
}

.app-store-badge.large .badge-img {
    height: 56px;
}

.requirements {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.hero-image {
    position: relative;
}

.hero-image .mockup {
    border-radius: var(--border-radius-lg);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-secondary);
}

.features .container {
    text-align: center;
}

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

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

.feature-card {
    background: var(--color-glass);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    text-align: left;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-accent), #4040FF);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

.feature-card h3 {
    color: var(--color-text-primary);
}

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

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

.how-it-works .container {
    text-align: center;
}

.steps {
    margin-top: var(--spacing-xl);
}

.step {
    display: grid;
    grid-template-columns: auto 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
    padding: var(--spacing-xl) 0;
    border-bottom: 1px solid var(--color-border);
}

.step:last-child {
    border-bottom: none;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-accent), #4040FF);
    border-radius: var(--border-radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.step-content {
    text-align: left;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

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

.step-image img {
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    max-height: 300px;
    object-fit: contain;
}

kbd {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-family: var(--font-family);
    font-size: 0.9rem;
    font-weight: 500;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    box-shadow: 0 2px 0 rgba(0, 0, 0, 0.3);
}

/* ============================================
   Keyboard Shortcut Section
   ============================================ */
.shortcut {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.shortcut-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.shortcut-content h2 {
    margin-bottom: var(--spacing-sm);
}

.shortcut-content > p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.keyboard {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.keyboard kbd {
    font-size: 1.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.4);
}

.keyboard .plus {
    color: var(--color-text-muted);
    font-size: 1.25rem;
}

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

/* ============================================
   CTA Section
   ============================================ */
.cta {
    padding: var(--spacing-xxl) 0;
    background: var(--color-bg-secondary);
}

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

.cta-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 18%;
    box-shadow: 0 10px 40px rgba(0, 0, 255, 0.3);
}

.cta-content h2 {
    margin-bottom: var(--spacing-sm);
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-border);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.1rem;
}

.footer-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

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

.footer-links a {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

.copyright {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.built-by {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
}

.built-by a {
    color: var(--color-text-secondary);
}

.built-by a:hover {
    color: var(--color-text-primary);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-image {
        order: -1;
    }
    
    .step {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-md);
    }
    
    .step-number {
        margin: 0 auto;
    }
    
    .step-content {
        text-align: center;
    }
    
    .step-image {
        order: 1;
    }
}

@media (max-width: 640px) {
    :root {
        --container-padding: 1rem;
        --spacing-xxl: 3rem;
    }
    
    .app-icon {
        width: 100px;
        height: 100px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .keyboard kbd {
        font-size: 1.25rem;
        padding: 0.5rem 1rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    .fade-in {
        opacity: 1;
        transform: none;
        transition: none;
    }
    
    * {
        transition-duration: 0s !important;
    }
}