/* HubOS Website — Shared Styles */

:root {
    --bg: #0a0a14;
    --bg-card: #0e0e1c;
    --bg-elevated: #12122a;
    --accent: #58a6ff;
    --accent-hover: #79baff;
    --accent-dim: #58a6ff20;
    --text: #c8c8dc;
    --text-dim: #606080;
    --text-bright: #ffffff;
    --border: #1a1a2e;
    --success: #50c878;
    --warning: #ffcc50;
    --danger: #ff5555;
    --radius: 10px;
}

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

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

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

code {
    background: var(--bg-card);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

kbd {
    display: inline-block;
    padding: 2px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-card);
    font-family: inherit;
    font-size: 0.85em;
}

/* ── Navigation ── */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: #0a0a14ee;
    backdrop-filter: blur(12px);
    z-index: 100;
}

.nav-logo {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-bright);
    text-decoration: none;
}

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

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

/* ── Page Layout ── */
.page {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem 6rem;
}

.page h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-bright);
    margin-bottom: 0.5rem;
}

.page .subtitle {
    font-size: 1.15rem;
    color: var(--text);
    margin-bottom: 3rem;
}

.page h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-top: 3rem;
    margin-bottom: 1rem;
}

.page h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-bright);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.btn:hover { text-decoration: none; }

.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-1px); }

.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.btn-small { padding: 0.4rem 1rem; font-size: 0.85rem; }

/* ── Steps (Install Guide) ── */
.steps { margin-top: 2rem; }

.step {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border);
}

.step:last-child { border-bottom: none; }

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-dim);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
}

.step-content { flex: 1; }

.step-content h2 {
    margin-top: 0.3rem;
    font-size: 1.3rem;
}

.step-content p { margin-bottom: 1rem; }

.step-content ol, .step-content ul {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.step-content li { margin-bottom: 0.4rem; }

/* ── Tables ── */
.variant-table,
.command-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

.variant-table td,
.command-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.command-table td:first-child { white-space: nowrap; }

/* ── Info/Warning Boxes ── */
.info-box, .warning-box {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin: 1rem 0;
    font-size: 0.95rem;
}

.info-box {
    background: #58a6ff08;
    border-left: 3px solid var(--accent);
}

.warning-box {
    background: #ffcc5008;
    border-left: 3px solid var(--warning);
}

/* ── Tool Cards (Install page) ── */
.tool-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
}

.tool-card h3 {
    font-size: 1rem;
    color: var(--text-bright);
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.tool-card p {
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.code-block {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    margin: 0.75rem 0;
    overflow-x: auto;
    font-size: 0.85rem;
    white-space: pre;
}

/* ── FAQ ── */
.faq-section { margin-bottom: 2rem; }

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.faq-item summary {
    padding: 1rem 1.25rem;
    font-weight: 600;
    color: var(--text-bright);
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.2rem;
    color: var(--accent);
    transition: transform 0.2s;
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item summary:hover { background: var(--bg-card); }

.faq-item p,
.faq-item ul {
    padding: 0 1.25rem 1rem;
    font-size: 0.95rem;
}

.faq-item ul { padding-left: 2.5rem; }
.faq-item li { margin-bottom: 0.3rem; }

/* ── Hero (Index page) ── */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 30%, #58a6ff10 0%, transparent 60%);
    pointer-events: none;
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    border: 1px solid var(--border);
    border-radius: 99px;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 2rem;
    backdrop-filter: blur(8px);
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    color: var(--text-bright);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.hero h1 span { color: var(--accent); }

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

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

/* ── Features Grid (Index) ── */
.section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 6rem 2rem;
}

.section h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-bright);
    text-align: center;
    margin-bottom: 1rem;
}

.section .subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: border-color 0.2s;
}

.feature-card:hover { border-color: #58a6ff40; }
.feature-card .icon { font-size: 2rem; margin-bottom: 1rem; }
.feature-card h3 { font-size: 1.2rem; color: var(--text-bright); margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.95rem; }

/* ── Comparison Table (Index) ── */
.compare-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
}

.compare-table th, .compare-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.compare-table th { color: var(--text-bright); font-weight: 600; }

.compare-table tr:last-child {
    background: #58a6ff08;
    border: 1px solid #58a6ff30;
}

.compare-table tr:last-child td { color: var(--accent); font-weight: 500; }

.check { color: var(--success); }
.cross { color: var(--danger); opacity: 0.5; }

/* ── Download Section (Index) ── */
.download-section {
    text-align: center;
    padding: 6rem 2rem;
    background: linear-gradient(180deg, transparent, #58a6ff08, transparent);
}

.download-cards {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    width: 280px;
    text-align: center;
}

.download-card h3 { color: var(--text-bright); margin-bottom: 0.3rem; }
.download-card .desc { font-size: 0.9rem; color: var(--text); margin-bottom: 1.5rem; }
.download-card .btn { width: 100%; justify-content: center; }

/* ── Download Page ── */
.download-option {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem 2.5rem;
    margin-bottom: 2rem;
    position: relative;
}

.download-option h2 { margin-top: 0; }

.option-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.option-badge.available {
    background: #50c87820;
    color: var(--success);
    border: 1px solid #50c87840;
}

.option-badge.coming-soon {
    background: #ffcc5020;
    color: var(--warning);
    border: 1px solid #ffcc5040;
}

.code-wrapper {
    position: relative;
    margin: 0.75rem 0;
}

.code-wrapper .code-block {
    padding-right: 5rem;
}

.copy-btn {
    position: absolute;
    top: 50%;
    right: 0.75rem;
    transform: translateY(-50%);
    background: var(--border);
    color: var(--text);
    border: none;
    border-radius: 6px;
    padding: 0.3rem 0.75rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover { background: var(--accent); color: #000; }
.copy-btn.copied { background: var(--success); color: #000; }

.iso-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.iso-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}

.iso-card h3 { color: var(--text-bright); margin-bottom: 0.25rem; }
.iso-card p { font-size: 0.9rem; color: var(--text); margin-bottom: 0.5rem; }
.iso-size { display: block; font-size: 0.8rem; color: var(--text-dim); margin-bottom: 1rem; }
.iso-card .btn { width: 100%; justify-content: center; }
.iso-card .btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Footer ── */
footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-dim);
}

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

/* ── Responsive ── */
@media (max-width: 768px) {
    .nav { flex-direction: column; gap: 0.75rem; }
    .nav-links { flex-wrap: wrap; justify-content: center; gap: 1rem; }
    .features-grid { grid-template-columns: 1fr; }
    .step { flex-direction: column; }
    .step-number { align-self: flex-start; }
    .compare-table { font-size: 0.85rem; }
    .compare-table th, .compare-table td { padding: 0.6rem; }
    .tool-cards { grid-template-columns: 1fr; }
}