/* ==========================================
   IMP Landing Page - Style Matching DiskMan
   ========================================== */

:root {
    --bg-primary: #050505;
    --bg-secondary: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
    --border-color: rgba(255, 255, 255, 0.1);
    --card-bg: rgba(255, 255, 255, 0.02);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', 'Monaco', monospace;
}

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

html {
    scroll-behavior: smooth;
}

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

/* Glow Effects */
.glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.3;
    pointer-events: none;
    z-index: -1;
}

.glow-top-left {
    top: -200px;
    left: -200px;
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
}

.glow-bottom-right {
    bottom: -200px;
    right: -200px;
    background: radial-gradient(circle, var(--accent-purple) 0%, transparent 70%);
}

/* Header */
.header {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 28px;
    height: 28px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
}

.logo-author {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-github {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-github:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero {
    max-width: 800px;
    margin: 0 auto;
    padding: 6rem 2rem 4rem;
    text-align: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
    line-height: 1.7;
}

/* Install Box */
.install-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.install-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    flex: 1;
    padding: 0.875rem 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.tab.active {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 2px solid var(--accent-blue);
}

.install-content {
    padding: 1.5rem;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

.install-content pre {
    margin: 0;
    text-align: left;
}

.install-content code {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.install-content .prompt {
    color: var(--accent-blue);
    user-select: none;
}

.install-content .comment {
    color: var(--text-muted);
}

.link-arrow {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.link-arrow:hover {
    color: var(--accent-blue);
}

/* Features Section */
.features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem;
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.features-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    text-align: left;
    transition: all 0.3s;
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.feature-card code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-blue);
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
}

/* Usage Section */
.usage {
    max-width: 1000px;
    margin: 0 auto;
    padding: 4rem 2rem 6rem;
    text-align: center;
}

.usage h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
}

.usage-examples {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.usage-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    text-align: left;
}

.usage-card h4 {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.usage-card pre {
    margin: 0;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.usage-card code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--accent-blue);
    word-break: break-all;
}

/* Footer */
.footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid var(--border-color);
}

.footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.footer a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

.footer a:hover {
    color: var(--accent-blue);
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        flex-wrap: wrap;
        gap: 1rem;
        padding: 1rem;
    }

    .nav {
        order: 3;
        width: 100%;
        justify-content: center;
        gap: 1.5rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .features h2 {
        font-size: 2rem;
    }

    .glow {
        width: 400px;
        height: 400px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .install-tabs {
        flex-wrap: wrap;
    }

    .tab {
        padding: 0.75rem 1rem;
        font-size: 0.8rem;
    }

    .install-content code {
        font-size: 0.75rem;
    }
}