/* ========================================
   SVENS BLOG - MAIN STYLES
   ======================================== */

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --background: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --success: #22c55e;
    --error: #ef4444;
    --warning: #f59e0b;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Transitions */
    --transition: 150ms ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    background-color: var(--background);
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
}

/* ========================================
   UTILITIES
   ======================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

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

.link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: 1px solid transparent;
    transition: all var(--transition);
    cursor: pointer;
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: var(--border);
    color: var(--text);
}

.btn-outline:hover {
    background-color: var(--border-light);
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: 1rem;
}

.btn-full {
    width: 100%;
}

/* ========================================
   HEADER
   ======================================== */

.header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    padding: var(--space-2);
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--text);
}

/* ========================================
   HERO
   ======================================== */

.hero {
    padding: var(--space-16) 0;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--space-6);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-actions .btn-outline {
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.hero-actions .btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* ========================================
   FEATURES
   ======================================== */

.features {
    padding: var(--space-16) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-8);
}

.feature-card {
    text-align: center;
    padding: var(--space-8);
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition), transform var(--transition);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-2);
    color: var(--text);
}

.feature-card p {
    color: var(--text-light);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    padding: var(--space-8) 0;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
}

/* ========================================
   FEATURES SECTION HEADER
   ======================================== */

.section-pretitle {
    text-align: center;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: var(--space-2);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--space-12);
}

/* ========================================
   MANIFESTO
   ======================================== */

.manifesto {
    padding: var(--space-16) 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
    text-align: center;
}

.manifesto blockquote {
    font-size: 1.5rem;
    font-weight: 300;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto var(--space-6);
    font-style: italic;
}

.manifesto blockquote::before {
    content: '"';
    font-size: 4rem;
    line-height: 1;
    color: var(--primary-light);
    opacity: 0.5;
    display: block;
    margin-bottom: var(--space-4);
}

.manifesto-author {
    font-size: 1rem;
    opacity: 0.8;
    color: var(--primary-light);
}

/* ========================================
   CTA SECTION
   ======================================== */

.cta-section {
    padding: var(--space-16) 0;
    text-align: center;
    background-color: var(--surface);
    border-top: 1px solid var(--border);
}

.cta-section h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: var(--space-4);
}

.cta-section > .container > p {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto var(--space-8);
}

/* ========================================
   RESPONSIVE EXTENSIONS
   ======================================== */

@media (max-width: 768px) {
    .section-title {
        font-size: 1.5rem;
    }
    
    .manifesto blockquote {
        font-size: 1.125rem;
    }
    
    .cta-section h2 {
        font-size: 1.5rem;
    }
}