/* 
   slides-tape: premium documentation design system
   Author: Antigravity AI
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&family=Outfit:wght@400;700&display=swap');

:root {
    --bg-main: #0b0e14;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-glass: rgba(13, 17, 23, 0.7);
    --border-glass: rgba(255, 255, 255, 0.1);
    
    --accent-crimson: #ff3e3e;
    --accent-crimson-glow: rgba(255, 62, 62, 0.4);
    --accent-teal: #00f5d4;
    --accent-blue: #3a86ff;
    
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --text-muted: #484f58;

    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --space-unit: 1rem;
    --radius-lg: 16px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* --- THEME UTILS --- */

.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
}

.gradient-text {
    background: linear-gradient(90deg, #fff, var(--accent-crimson));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.accent-glow {
    text-shadow: 0 0 15px var(--accent-crimson-glow);
}

/* --- COMPONENTS --- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px var(--accent-crimson-glow);
}

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

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--text-secondary);
}

/* --- LAYOUT --- */

.navbar {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 1200px;
    padding: 1rem 2rem;
    border-radius: 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
}

.nav-links {
    display: flex;
    gap: 2rem;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--accent-crimson);
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 6rem 2rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-crimson-glow) 0%, transparent 70%);
    z-index: -1;
    filter: blur(50px);
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin-bottom: 1rem;
    letter-spacing: -2px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin-bottom: 2.5rem;
}

.hero-preview {
    width: 100%;
    max-width: 1000px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-glass);
    overflow: hidden;
    margin-top: 3rem;
    box-shadow: 0 30px 60px -15px rgba(0,0,0,0.5);
}

.hero-preview img {
    width: 100%;
    display: block;
}

/* --- CODE BLOCKS --- */

.code-window {
    background: #000;
    border-radius: 12px;
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    margin: 2rem 0;
    border: 1px solid #30363d;
    position: relative;
}

.code-window::before {
    content: '•••';
    color: #30363d;
    position: absolute;
    top: 5px;
    left: 10px;
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.code-block {
    margin-top: 1rem;
    color: var(--accent-teal);
    overflow-x: auto;
}

/* --- GRID SECTIONS --- */

.section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    transition: var(--transition-smooth);
}

.card:hover {
    background: rgba(255,255,255,0.05);
    transform: translateY(-5px);
    border-color: var(--text-secondary);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

/* --- FOOTER --- */

.footer {
    padding: 4rem 2rem;
    text-align: center;
    border-top: 1px solid var(--border-glass);
    color: var(--text-secondary);
}

/* --- ANIMATIONS --- */

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

.hero > * {
    animation: fadeIn 0.8s ease forwards;
}

.hero h1 { animation-delay: 0.1s; }
.hero p { animation-delay: 0.2s; }
.hero .btn-group { animation-delay: 0.3s; }
.hero-preview { animation-delay: 0.5s; }