/* ── Reset & Base ─────────────────────────────────────────────────── */

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

:root {
    --bg:        #0a0e13;
    --bg-card:   #111820;
    --bg-code:   #0f1419;
    --border:    #1e2a3a;
    --border-hi: #2a3a4e;
    --text:      #c4cdd9;
    --text-dim:  #5a6a7e;
    --accent:    #58a6ff;
    --green:     #3ddc84;
    --green-dim: rgba(61, 220, 132, 0.08);
    --green-glow:rgba(61, 220, 132, 0.15);
    --yellow:    #e2b93d;
    --red:       #f85149;
    --cyan:      #79c0ff;
    --purple:    #bc8cff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Space Grotesk', -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* subtle dot grid background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
    z-index: 0;
}

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

a:hover {
    text-decoration: underline;
}

code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85em;
    background: rgba(61, 220, 132, 0.06);
    color: var(--green);
    padding: 0.15em 0.45em;
    border-radius: 4px;
    border: 1px solid rgba(61, 220, 132, 0.1);
}

pre {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem;
    line-height: 1.55;
}

pre code {
    background: none;
    padding: 0;
    border: none;
    color: inherit;
}

/* ── Animations ──────────────────────────────────────────────────── */

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ── Navigation ──────────────────────────────────────────────────── */

nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(10, 14, 19, 0.8);
    backdrop-filter: blur(16px) saturate(1.2);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--green);
    text-decoration: none;
    letter-spacing: -0.02em;
    text-shadow: 0 0 20px rgba(61, 220, 132, 0.3);
    transition: text-shadow 0.3s;
}

.logo:hover {
    text-decoration: none;
    color: var(--green);
    text-shadow: 0 0 30px rgba(61, 220, 132, 0.5);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-dim);
    font-size: 0.88rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text);
    text-decoration: none;
}

.btn-gh {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 0.4rem 1rem;
    border-radius: 6px;
    color: var(--text) !important;
    font-size: 0.84rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.btn-gh:hover {
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(88, 166, 255, 0.1);
    text-decoration: none !important;
}

/* ── Hero ────────────────────────────────────────────────────────── */

.hero {
    max-width: 900px;
    margin: 0 auto;
    padding: 9rem 1.5rem 4rem;
    text-align: center;
    position: relative;
}

/* radial glow behind hero */
.hero::before {
    content: '';
    position: absolute;
    top: 4rem;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(61, 220, 132, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.hero h1 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: #e8edf3;
    margin-bottom: 1rem;
    animation: fadeUp 0.7s ease both;
}

.hero h1 .accent {
    background: linear-gradient(135deg, var(--green), #79c0ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.2rem;
    color: var(--text-dim);
    max-width: 560px;
    margin: 0 auto 0.5rem;
    font-weight: 400;
    animation: fadeUp 0.7s ease 0.1s both;
}

.research-note {
    font-size: 0.82rem;
    color: #3d4a5c;
    margin: 0.25rem auto 2.5rem;
    animation: fadeUp 0.7s ease 0.15s both;
}

.research-note a {
    color: var(--text-dim);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid var(--border);
    transition: color 0.2s, border-color 0.2s;
}

.research-note a:hover {
    color: var(--accent);
    border-color: var(--accent);
    text-decoration: none;
}

/* ── Terminal window ─────────────────────────────────────────────── */

.terminal-window {
    background: var(--bg-code);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    text-align: left;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.3),
        0 16px 48px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
    animation: fadeUp 0.7s ease 0.2s both;
}

.terminal-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0.65rem 0.9rem;
    background: #141b24;
    border-bottom: 1px solid var(--border);
}

.dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}

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

.terminal-title {
    margin-left: 0.5rem;
    font-size: 0.78rem;
    color: var(--text-dim);
    font-family: 'JetBrains Mono', monospace;
}

.terminal-body {
    padding: 1rem 1.2rem;
    font-size: 0.82rem;
    overflow-x: auto;
}

.terminal-body .ln   { color: var(--text-dim); user-select: none; }
.terminal-body .kw   { color: var(--yellow); }
.terminal-body .ty   { color: var(--cyan); }
.terminal-body .str  { color: var(--green); }
.terminal-body .num  { color: var(--purple); }
.terminal-body .fn   { color: #e8edf3; font-weight: 600; }
.terminal-body .comment { color: var(--text-dim); }

.status-bar {
    display: block;
    background: var(--green);
    color: #0a0e13;
    margin: 0.5rem -1.2rem -1rem;
    padding: 0.15rem 1.2rem;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

/* ── Hero buttons ────────────────────────────────────────────────── */

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeUp 0.7s ease 0.3s both;
}

.btn-primary {
    background: var(--green);
    color: #0a0e13 !important;
    padding: 0.65rem 2rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.92rem;
    letter-spacing: 0.01em;
    transition: transform 0.15s, box-shadow 0.2s;
    box-shadow: 0 0 20px rgba(61, 220, 132, 0.15);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 30px rgba(61, 220, 132, 0.25);
    text-decoration: none !important;
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-hi);
    color: var(--text) !important;
    padding: 0.65rem 2rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.92rem;
    transition: border-color 0.2s, background 0.2s;
}

.btn-secondary:hover {
    border-color: var(--text-dim);
    background: rgba(255, 255, 255, 0.02);
    text-decoration: none !important;
}

/* ── One-liner install ────────────────────────────────────────────── */

.one-liner {
    margin-top: 2.5rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeUp 0.7s ease 0.35s both;
}

.one-liner-window {
    background: var(--bg-code);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.2),
        0 16px 48px rgba(0, 0, 0, 0.2);
}

.one-liner-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0.6rem 0.8rem;
    background: #141b24;
    border-bottom: 1px solid var(--border);
}

.one-liner-body {
    padding: 1.2rem 1.4rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
}

.one-liner-comment {
    display: block;
    color: var(--text-dim);
    margin-bottom: 0.8rem;
}

.one-liner-cmd {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.one-liner-prompt {
    color: var(--green);
    font-weight: 700;
    user-select: none;
}

.one-liner-text {
    color: var(--text);
    flex: 1;
}

.copy-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-dim);
    cursor: pointer;
    padding: 0.35rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, border-color 0.2s;
    flex-shrink: 0;
}

.copy-btn:hover {
    color: var(--text);
    border-color: var(--text-dim);
}

.copy-btn .check-icon {
    color: var(--green);
}

.one-liner-note {
    text-align: center;
    margin-top: 0.8rem;
    color: var(--text-dim);
    font-size: 0.8rem;
}

/* ── Features ────────────────────────────────────────────────────── */

.features {
    max-width: 1100px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
    position: relative;
    border-top: 1px solid var(--border);
}

.features h2 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3.5rem;
    letter-spacing: -0.03em;
    color: #e8edf3;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
    gap: 1.25rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.6rem;
    transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s;
    position: relative;
    overflow: hidden;
}

/* subtle top-edge glow on hover */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--green), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.feature-card:hover {
    border-color: var(--border-hi);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
    transform: translateY(-2px);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--green);
    margin-bottom: 0.85rem;
    background: var(--green-dim);
    display: inline-block;
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    border: 1px solid rgba(61, 220, 132, 0.08);
}

.feature-card h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #e8edf3;
}

.feature-card p {
    color: var(--text-dim);
    font-size: 0.88rem;
    line-height: 1.65;
}

/* ── Install ─────────────────────────────────────────────────────── */

.install {
    max-width: 700px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
    border-top: 1px solid var(--border);
}

.install h2 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2.5rem;
    letter-spacing: -0.03em;
    color: #e8edf3;
}

.install h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 2rem 0 0.75rem;
    color: #e8edf3;
}

.install h4 {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-dim);
    margin-bottom: 0.5rem;
}

.install-pkg {
    margin-bottom: 1rem;
}

.install pre {
    background: var(--bg-code);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem 1.2rem;
    overflow-x: auto;
}

/* ── Docs ────────────────────────────────────────────────────────── */

.docs {
    max-width: 1100px;
    margin: 0 auto;
    padding: 5rem 1.5rem;
    border-top: 1px solid var(--border);
}

.docs h2 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3.5rem;
    letter-spacing: -0.03em;
    color: #e8edf3;
}

.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.doc-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1.5rem;
    transition: border-color 0.2s;
}

.doc-section:hover {
    border-color: var(--border-hi);
}

.doc-section h3 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--green);
    letter-spacing: 0.02em;
}

.doc-section table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.84rem;
}

.doc-section td {
    padding: 0.35rem 0;
    vertical-align: top;
}

.doc-section td:first-child {
    white-space: nowrap;
    padding-right: 1rem;
    width: 45%;
}

.doc-section td:last-child {
    color: var(--text-dim);
}

.doc-section pre {
    background: var(--bg-code);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    font-size: 0.78rem;
    overflow-x: auto;
}

.docs-full {
    text-align: center;
    margin-top: 2.5rem;
    color: var(--text-dim);
    font-size: 0.88rem;
}

/* ── Footer ──────────────────────────────────────────────────────── */

footer {
    text-align: center;
    padding: 3rem 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-dim);
    font-size: 0.84rem;
}

footer p + p {
    margin-top: 0.5rem;
}

/* ── Responsive ──────────────────────────────────────────────────── */

@media (max-width: 640px) {
    .hero h1 {
        font-size: 2.8rem;
    }

    .tagline {
        font-size: 1.02rem;
    }

    .feature-grid,
    .docs-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 1rem;
    }

    .terminal-body {
        font-size: 0.72rem;
    }
}