:root {
    --bg: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --accent: #00ff9d;
    --accent-glow: rgba(0, 255, 157, 0.2);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --font-heading: 'Outfit', sans-serif;
    --font-ui: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
}

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

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

.background-glow {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(0, 255, 157, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* Nav */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 32px;
    width: auto;
}

.links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-size: 0.9rem;
    transition: color 0.3s;
}

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

.github-link {
    border: 1px solid var(--card-border);
    padding: 0.5rem 1rem;
    border-radius: 20px;
}

/* Hero */
.hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 60px;
}

.badge {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--accent);
    margin-bottom: 1rem;
    display: inline-block;
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, #a0a0a0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.primary-btn {
    background: var(--accent);
    color: #000;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.secondary-btn {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    padding: 1rem 2rem;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    transition: background 0.2s;
}

.secondary-btn:hover {
    background: var(--card-bg);
}

/* Sections */
.content-section,
.grid-section,
.centered-section {
    padding: 6rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

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

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 2rem;
    border-radius: 12px;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card p {
    color: var(--text-secondary);
}

/* Code Blocks */
.code-block {
    background: #000;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    font-family: var(--font-mono);
    overflow: hidden;
    margin-top: 1rem;
}

.code-header {
    background: var(--card-bg);
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--card-border);
}

pre {
    padding: 1rem;
    overflow-x: auto;
}

code {
    color: var(--accent);
}

/* Workflow Steps */
.step {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.step:nth-child(even) {
    direction: rtl;
}

.step:nth-child(even) .step-text {
    direction: ltr;
}

/* Footer */
footer {
    text-align: center;
    padding: 4rem 0;
    border-top: 1px solid var(--card-border);
    color: var(--text-secondary);
}

/* Library Page Styles */
.small-hero {
    height: 50vh;
    padding-top: 100px;
}

.search-container {
    margin-top: 2rem;
}

#searchInput {
    width: 100%;
    max-width: 600px;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    border: 1px solid var(--card-border);
    background: rgba(0, 0, 0, 0.5);
    color: var(--text-primary);
    font-size: 1.1rem;
    outline: none;
    font-family: var(--font-ui);
    transition: border-color 0.3s, box-shadow 0.3s;
}

#searchInput:focus {
    border-color: var(--accent);
    box-shadow: 0 0 15px var(--accent-glow);
}

.library-card .lib-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.library-card .author {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    opacity: 0.7;
}

.library-card .badge.cpp {
    color: #4facfe;
    border-color: rgba(79, 172, 254, 0.3);
    background: rgba(79, 172, 254, 0.1);
}

.library-card .badge.c {
    color: #a0a0a0;
}

.mini-code {
    margin-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.mini-code pre {
    padding: 0.75rem;
    font-size: 0.8rem;
    background: transparent;
}

.copy-btn {
    background: transparent;
    border: none;
    color: white;
    cursor: pointer;
    padding: 0 1rem;
    font-size: 1.2rem;
}

.copy-btn:hover {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .hero {
        height: auto;
        padding: 8rem 0;
    }

    .step {
        grid-template-columns: 1fr;
        gap: 2rem;
        direction: ltr !important;
    }
}

.default-card {
    border-color: #ffd700;
    /* Gold */
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.1);
}