/* 
 * ChromeSpace Showcase - Swiss Precision meets Apple Minimalism
 * Design System: 8px spacing, warm grays, blue accents
 */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Light Mode */
    --color-primary: #007AFF;
    --color-primary-hover: #0051D5;
    --color-background: #F5F5F7;
    --color-foreground: #1D1D1F;
    --color-card: #FFFFFF;
    --color-muted: #86868B;
    --color-border: #D1D1D6;
    --color-secondary: #E5E5EA;
    
    /* Spacing (8px base) */
    --spacing-1: 8px;
    --spacing-2: 16px;
    --spacing-3: 24px;
    --spacing-4: 32px;
    --spacing-5: 40px;
    --spacing-6: 48px;
    --spacing-8: 64px;
    --spacing-12: 96px;
    
    /* Border Radius */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Shadows */
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --font-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
}

/* Dark Mode */
[data-theme="dark"] {
    --color-primary: #0A84FF;
    --color-primary-hover: #409CFF;
    --color-background: #000000;
    --color-foreground: #F5F5F7;
    --color-card: #1C1C1E;
    --color-muted: #98989D;
    --color-border: #38383A;
    --color-secondary: #2C2C2E;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-background);
    color: var(--color-foreground);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

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

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

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-2);
}

@media (min-width: 640px) {
    .container {
        padding: 0 var(--spacing-3);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-4);
    }
}

/* ===== Header ===== */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    width: 100%;
    border-bottom: 1px solid var(--color-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.logo-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background-color: var(--color-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
}

.logo-text {
    font-weight: 600;
    font-size: 18px;
}

.nav {
    display: none;
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    transition: color 0.2s ease;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* ===== Glass Effect ===== */
.glass {
    backdrop-filter: blur(20px) saturate(180%);
    background-color: rgba(255, 255, 255, 0.72);
}

[data-theme="dark"] .glass {
    background-color: rgba(28, 28, 30, 0.72);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: 10px 20px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-foreground);
}

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

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
    border-radius: var(--radius-lg);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    color: var(--color-foreground);
    transition: background-color 0.2s ease;
}

.btn-icon:hover {
    background-color: var(--color-secondary);
}

.icon {
    width: 20px;
    height: 20px;
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    overflow: hidden;
    padding: var(--spacing-12) 0 var(--spacing-8);
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: 999px;
    background-color: rgba(0, 122, 255, 0.1);
    color: var(--color-primary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--spacing-4);
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: var(--spacing-3);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 80px;
    }
}

.hero-subtitle {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-muted);
    margin-bottom: var(--spacing-2);
}

@media (min-width: 768px) {
    .hero-subtitle {
        font-size: 32px;
    }
}

.hero-description {
    font-size: 18px;
    color: var(--color-muted);
    max-width: 700px;
    margin-bottom: var(--spacing-6);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-8);
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
    }
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-4);
    max-width: 700px;
}

@media (min-width: 768px) {
    .stats {
        gap: var(--spacing-8);
    }
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-1);
}

@media (min-width: 768px) {
    .stat-value {
        font-size: 40px;
    }
}

.stat-label {
    font-size: 14px;
    color: var(--color-muted);
}

/* ===== Sections ===== */
.section {
    padding: var(--spacing-8) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-12) 0;
    }
}

.section-alt {
    background-color: rgba(0, 0, 0, 0.02);
}

[data-theme="dark"] .section-alt {
    background-color: rgba(255, 255, 255, 0.02);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-6);
}

@media (min-width: 768px) {
    .section-header {
        margin-bottom: var(--spacing-8);
    }
}

.section-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: var(--spacing-2);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 56px;
    }
}

.section-description {
    font-size: 18px;
    color: var(--color-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== Cards ===== */
.card {
    background-color: var(--color-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.shadow {
    box-shadow: var(--shadow);
}

.shadow-lg {
    box-shadow: var(--shadow-lg);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

/* ===== Grid ===== */
.grid {
    display: grid;
    gap: var(--spacing-4);
}

.grid-2 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

.grid-3 {
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===== PDF Viewer ===== */
.pdf-viewer {
    aspect-ratio: 16 / 10;
    width: 100%;
    background-color: var(--color-secondary);
}

.pdf-viewer iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.card-footer {
    padding: var(--spacing-3);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

@media (min-width: 640px) {
    .card-footer {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.card-info {
    flex: 1;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.card-subtitle {
    font-size: 14px;
    color: var(--color-muted);
}

.card-actions {
    display: flex;
    gap: var(--spacing-2);
    flex-wrap: wrap;
}

/* ===== Features ===== */
.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    background-color: rgba(0, 122, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-3);
}

.feature-icon .icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.card .feature-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.card .feature-description {
    color: var(--color-muted);
    line-height: 1.7;
}

.card {
    padding: var(--spacing-4);
}

/* ===== Use Cases ===== */
.use-case-emoji {
    font-size: 48px;
    margin-bottom: var(--spacing-2);
}

.use-case-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
}

.use-case-description {
    color: var(--color-muted);
    line-height: 1.7;
    margin-bottom: var(--spacing-2);
}

.use-case-example {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
}

/* ===== CTA Card ===== */
.cta-card {
    padding: var(--spacing-6);
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 122, 255, 0.05) 0%, transparent 100%);
}

@media (min-width: 768px) {
    .cta-card {
        padding: var(--spacing-8);
    }
}

.cta-title {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: var(--spacing-3);
}

@media (min-width: 768px) {
    .cta-title {
        font-size: 56px;
    }
}

.cta-description {
    font-size: 18px;
    color: var(--color-muted);
    max-width: 700px;
    margin: 0 auto var(--spacing-5);
}

.cta-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    justify-content: center;
}

@media (min-width: 640px) {
    .cta-actions {
        flex-direction: row;
    }
}

/* ===== Footer ===== */
.footer {
    padding: var(--spacing-6) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    align-items: center;
}

@media (min-width: 768px) {
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-text {
    font-size: 14px;
    color: var(--color-muted);
}

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

.footer-link {
    font-size: 14px;
    color: var(--color-muted);
    transition: color 0.2s ease;
}

.footer-link:hover {
    color: var(--color-foreground);
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}