/* === CSS Variables === */
:root {
    --bg-dark: #0a0a0f;
    --bg-darker: #050508;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --accent: #00d4ff;
    --accent-secondary: #7c3aed;
    --accent-glow: rgba(0, 212, 255, 0.4);
    --text-primary: #ffffff;
    --text-secondary: #e5e7eb;
    --text-muted: #6b7280;
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --code-bg: #0d1117;
    --code-border: rgba(255, 255, 255, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-dark);
    overflow-x: hidden;
}

/* === Animated Background === */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 212, 255, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(124, 58, 237, 0.1), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(0, 212, 255, 0.08), transparent);
    pointer-events: none;
    z-index: -1;
    animation: bgShift 20s ease-in-out infinite alternate;
}

@keyframes bgShift {
    0% { opacity: 1; transform: scale(1); }
    100% { opacity: 0.8; transform: scale(1.1); }
}

/* === Typography === */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
}

code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875em;
    background: rgba(0, 212, 255, 0.1);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    color: var(--accent);
}

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

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

/* === Layout === */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Navigation === */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-primary);
}

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

.nav-links a {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.nav-github {
    display: flex;
    align-items: center;
    gap: 6px;
}

.mobile-menu {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 8px;
}

/* === Hero Section === */
#hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 80px;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 700px;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 900;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 3vw, 1.375rem);
    color: var(--text-secondary);
    margin-bottom: 12px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.hero-description {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

/* === CTA Button === */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: linear-gradient(135deg, var(--accent) 0%, #00a8cc 100%);
    color: var(--bg-dark);
    padding: 14px 32px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 0 20px var(--accent-glow);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 40px var(--accent-glow);
    color: var(--bg-dark);
}

.cta-button.large {
    padding: 18px 40px;
    font-size: 1.125rem;
}

/* === Terminal Preview === */
.terminal-preview {
    margin-top: 60px;
    width: 100%;
    max-width: 500px;
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 0 60px rgba(0, 212, 255, 0.1),
        0 25px 50px rgba(0, 0, 0, 0.4);
    text-align: left;
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border);
}

.terminal-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.terminal-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.terminal-body {
    padding: 20px;
}

.terminal-body code {
    display: block;
    background: none;
    padding: 0;
    font-size: 0.8rem;
    line-height: 1.7;
    color: var(--text-secondary);
    white-space: pre;
}

/* === Syntax Highlighting === */
.comment { color: #6a737d; }
.keyword { color: #ff7b72; }
.function { color: #d2a8ff; }
.string { color: #a5d6ff; }
.variable { color: #ffa657; }
.number { color: #79c0ff; }
.builtin { color: #7ee787; }

/* === Features Section === */
#features {
    padding: 120px 0;
}

.section-title {
    text-align: center;
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: transform 0.3s, border-color 0.3s, background 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 12px;
    margin-bottom: 20px;
    font-size: 1.25rem;
    color: var(--accent);
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* === Commands Section === */
#commands {
    padding: 80px 0 120px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 40px;
    font-size: 1.0625rem;
}

.code-block {
    background: var(--code-bg);
    border: 1px solid var(--code-border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-bottom: 1px solid var(--border);
}

.code-filename {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
}

.copy-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.copy-btn.copied {
    color: var(--accent);
}

.code-block pre {
    margin: 0;
    padding: 24px;
    overflow-x: auto;
}

.code-block code {
    display: block;
    background: none;
    padding: 0;
    font-size: 0.8125rem;
    line-height: 1.7;
    color: var(--text-secondary);
    white-space: pre;
}

/* === Install Section === */
#install {
    padding: 60px 0 80px;
}

/* === CTA Section === */
#cta {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.03) 100%);
}

.cta-title {
    font-size: clamp(1.5rem, 4vw, 2rem);
    margin-bottom: 32px;
}

/* === Footer === */
footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border);
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9375rem;
    margin-bottom: 12px;
}

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

.copyright {
    color: var(--text-muted);
    font-size: 0.8125rem;
}

/* === GDPR Banner === */
.gdpr-banner {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-darker);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    z-index: 1001;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    transition: bottom 0.4s ease;
}

.gdpr-banner.show {
    bottom: 24px;
}

.gdpr-banner p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

.gdpr-banner button {
    background: var(--accent);
    color: var(--bg-dark);
    border: none;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: transform 0.2s;
}

.gdpr-banner button:hover {
    transform: scale(1.02);
}

/* === Animations === */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.5s; }

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll animations */
.scroll-fade {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 20px;
        gap: 0;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        padding: 16px 0;
        border-bottom: 1px solid var(--border);
        width: 100%;
    }

    .nav-links a:last-child {
        border-bottom: none;
    }

    .mobile-menu {
        display: block;
    }

    #hero {
        padding: 100px 20px 60px;
        min-height: auto;
    }

    .terminal-preview {
        margin-top: 40px;
    }

    .terminal-body code {
        font-size: 0.7rem;
    }

    .cta-button {
        padding: 14px 28px;
        font-size: 0.9375rem;
    }

    #features, #commands {
        padding: 80px 0;
    }

    .gdpr-banner {
        flex-direction: column;
        left: 16px;
        right: 16px;
        transform: none;
        text-align: center;
    }
}