/* landing.css - SnapPage Landing Page Styles */
/* Design System: Precision Intelligence */

:root {
    /* Colors - Tonal Architecture */
    --surface: #0c0f11;
    --surface-container-low: #101416;
    --surface-container-high: #1c2023;
    --surface-container-highest: #222629;
    --surface-container-lowest: #000000;
    --primary: #8ff5ff;
    --primary-dim: #00deec;
    --on-primary: #003f43;
    --tertiary: #65afff;
    --on-surface: #f8f9fc;
    --on-surface-variant: #a9abae;
    --outline-variant: rgba(69, 72, 75, 0.15);
    
    /* Typography */
    --font-headline: 'Manrope', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing & Radii */
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-4xl: 2.5rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--surface);
    color: var(--on-surface);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Tonal Architecture - No Borders Rule */
section {
    position: relative;
    padding: 80px 24px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Typography Scale */
h1, h2, h3, h4 {
    font-family: var(--font-headline);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.1;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); margin-bottom: 24px;}
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: 24px;}
h3 { font-size: 1.75rem; margin-bottom: 16px;}

p {
    color: var(--on-surface-variant);
    font-size: 1.125rem;
    margin-bottom: 24px;
}

/* Components: Kinetic Engine */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    border-radius: var(--radius-xl);
    font-family: var(--font-headline);
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    box-shadow: 0 0 40px -10px rgba(143, 245, 255, 0.2);
}

.btn-primary:hover {
    transform: scale(1.05);
    background: var(--primary-dim);
    box-shadow: 0 0 60px -5px rgba(143, 245, 255, 0.4);
}

.btn-secondary {
    background: var(--surface-container-high);
    color: var(--on-surface);
    border: 1px solid var(--outline-variant);
}

.btn-secondary:hover {
    background: var(--surface-container-highest);
    transform: scale(1.02);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    z-index: 1000;
    background: rgba(12, 15, 17, 0.8);
    backdrop-filter: blur(24px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: var(--font-headline);
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--on-surface-variant);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--on-surface);
}

/* Hero Section */
.hero {
    padding-top: 160px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--surface-container-high);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 24px;
}

.hero-tag span {
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--radius-2xl);
    padding: 12px;
    background: var(--surface-container-low);
    overflow: hidden;
    box-shadow: 0 40px 100px -20px rgba(0,0,0,0.5);
}

.hero-image {
    width: 100%;
    border-radius: var(--radius-lg);
    display: block;
    transition: transform 0.5s ease;
}

.hero-image-wrapper:hover .hero-image {
    transform: scale(1.02);
}

/* Glass HUD Overlay */
.glass-hud {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(34, 38, 41, 0.8);
    backdrop-filter: blur(24px);
    padding: 12px 24px;
    border-radius: 100px;
    display: flex;
    gap: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Bento Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: auto auto;
    gap: 24px;
    padding: 80px 0;
}

.bento-card {
    background: var(--surface-container-low);
    border-radius: var(--radius-4xl);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.4s ease, background 0.3s ease;
}

.bento-card:hover { 
    transform: translateY(-8px);
    background: var(--surface-container-high);
}

.card-lg { grid-column: span 2; }

.icon-box {
    width: 56px;
    height: 56px;
    background: rgba(143, 245, 255, 0.1);
    color: var(--primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.icon-box .material-symbols-outlined {
    font-size: 32px;
}

/* Precision Section */
.precision-card {
    background: var(--surface-container-lowest);
    border-radius: var(--radius-4xl);
    padding: 80px;
    margin: 80px 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.precision-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at top right, rgba(143, 245, 255, 0.05), transparent);
    pointer-events: none;
}

.check-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.check-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.check-icon {
    color: var(--primary);
    font-weight: 700;
}

/* CTA Section */
.cta-banner {
    background: linear-gradient(135deg, var(--surface-container-high), var(--surface-container-low));
    border-radius: var(--radius-4xl);
    padding: 100px 40px;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 80px;
}

.cta-banner h2 {
    font-size: clamp(2.5rem, 6vw, 4rem);
}

/* Footer */
footer {
    padding: 60px 40px;
    border-top: 1px solid var(--outline-variant);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

@keyframes pulse {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
    100% { opacity: 1; transform: scale(1); }
}

@media (max-width: 900px) {
    .hero, .precision-card {
        grid-template-columns: 1fr;
        padding: 40px 24px;
        gap: 48px;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .card-lg { grid-column: span 1; }
    nav { padding: 0 24px; }
    .nav-links { display: none; }
}