/* LabelCheck AI - Liquid Glass Design System */

/* CSS Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --radius-lg: 16px;
    --radius-full: 9999px;
    --bg-primary: #0a0a0f;
    --bg-secondary: #1a1a2e;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --gradient-brand: linear-gradient(135deg, #f97316 0%, #8b5cf6 100%);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s var(--ease-smooth);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Glass Effect */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-base);
}

@supports not (backdrop-filter: blur(20px)) {
    .glass-card {
        background: rgba(26, 26, 46, 0.9);
    }
}

/* Layout */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 48px;
    max-width: 600px;
    margin: 0 auto 48px;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: all var(--transition-base);
}

nav.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-brand);
    transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

#heroCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
}

.badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: #f97316;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin: 0 auto 40px;
    line-height: 1.8;
    max-width: 700px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-brand);
    color: white;
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.6);
}

.btn-secondary {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
    max-width: 700px;
    margin: 0 auto;
}

.stat-item {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Features Section */
.features {
    padding: 100px 24px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(249, 115, 22, 0.2);
}

.feature-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(249, 115, 22, 0.1);
    border-radius: var(--radius-lg);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.7;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.feature-list li {
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
    font-size: 0.9rem;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #10b981;
    font-weight: bold;
}

/* Benefits Section */
.benefits {
    padding: 100px 24px;
    background: linear-gradient(180deg, transparent 0%, rgba(249, 115, 22, 0.05) 100%);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.benefit-card {
    text-align: center;
    padding: 32px 24px;
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.benefit-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.benefit-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Workflow Section */
.workflow {
    padding: 100px 24px;
}

.workflow-steps {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.workflow-step {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-brand);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Demo Section */
.demo {
    padding: 100px 24px;
    background: linear-gradient(180deg, rgba(139, 92, 246, 0.05) 0%, transparent 100%);
}

.demo-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.demo-controls {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 32px;
}

.demo-controls h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.demo-controls p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.demo-stats {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.demo-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
}

.demo-canvas-container {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    position: relative;
}

#demoCanvas {
    width: 100%;
    height: 400px;
    border-radius: var(--radius-lg);
    background: rgba(0, 0, 0, 0.3);
}

.demo-legend {
    margin-top: 16px;
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

/* CTA Section */
.cta {
    padding: 100px 24px;
}

.cta-content {
    text-align: center;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(150%) brightness(110%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 64px 32px;
}

.cta h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    padding: 80px 24px 24px;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-section h4 {
    margin-bottom: 16px;
    font-size: 1rem;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-base);
    font-size: 0.9rem;
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--glass-border);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-tagline {
    margin-top: 8px;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero {
        padding: 100px 16px 60px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .demo-container {
        grid-template-columns: 1fr;
    }
    
    .workflow-step {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}