/* ================================================
   SF-Intel Studio — Website
   
   Design principles:
   - Restraint over decoration
   - Trust through whitespace and typography
   - No gradients, no emoji, no gimmicks
   ================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg: #09090b;
    --surface: #111113;
    --surface-2: #18181b;
    --border: rgba(255,255,255,0.06);
    --border-strong: rgba(255,255,255,0.1);
    --text: #fafafa;
    --text-2: #e4e4e7; /* Was #a1a1aa - lighter for better reading */
    --text-3: #a1a1aa; /* Was #71717a - bumped up */
    --text-4: #52525b; /* Was #3f3f46 */
    --blue: #3b82f6;
    --mono: 'JetBrains Mono', 'SF Mono', Menlo, monospace;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text-2);
    font-size: 15px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

::selection {
    background: rgba(59,130,246,0.3);
    color: #fff;
}

a { color: var(--text-2); text-decoration: none; }
a:hover { color: var(--text); }

/* ──── Navigation ──── */
.site-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 52px;
    background: rgba(9,9,11,0.8);
    backdrop-filter: blur(16px) saturate(180%);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
}
.nav-left {
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-brand {
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.08em;
    color: var(--text);
    text-decoration: none;
}
.nav-brand:hover { color: var(--text); }
.nav-links { display: flex; gap: 24px; }
.nav-links a {
    font-size: 13px;
    color: var(--text-3);
    font-weight: 400;
    transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text-2); }
.nav-install {
    font-size: 13px;
    color: var(--text);
    font-weight: 500;
    padding: 6px 16px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    transition: all 0.15s;
}
.nav-install:hover {
    background: var(--surface-2);
    border-color: rgba(255,255,255,0.15);
    color: var(--text);
}

/* ──── Page Layout ──── */
.container { max-width: 1000px; margin: 0 auto; padding: 0 28px; }
section { padding: 120px 0; }

/* ──── Content Pages ──── */
.page-header {
    padding-top: 120px;
    padding-bottom: 64px;
    border-bottom: 1px solid var(--border);
}
.page-header h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}
.page-header p {
    color: var(--text-3);
    font-size: 15px;
}
.page-body {
    max-width: 640px;
    padding: 48px 0 120px;
}
.page-body h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    margin-top: 56px;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}
.page-body h2:first-child { margin-top: 0; }
.page-body h3 {
    font-size: 15px;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 8px;
    color: var(--text);
}
.page-body p {
    margin-bottom: 16px;
    line-height: 1.75;
}
.page-body ul {
    padding-left: 20px;
    margin-bottom: 16px;
}
.page-body li { margin-bottom: 6px; }
.page-body hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 56px 0;
}
.page-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0 24px;
    font-size: 14px;
}
.page-body th {
    text-align: left;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-strong);
    font-weight: 500;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-3);
}
.page-body td {
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}
.page-body td:first-child { padding-right: 24px; white-space: nowrap; }
.page-body code {
    font-family: var(--mono);
    font-size: 12.5px;
    background: var(--surface-2);
    padding: 2px 6px;
    border-radius: 3px;
    color: var(--text);
    border: 1px solid var(--border);
}
.domain-list { list-style: none; padding: 0; margin: 16px 0; }
.domain-list li {
    font-family: var(--mono);
    font-size: 13px;
    color: var(--text-3);
    padding: 5px 0;
}

/* ──── Footer ──── */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-4);
}
.footer-links { display: flex; gap: 20px; }
.footer-links a {
    color: var(--text-3);
    font-size: 12px;
}
.footer-links a:hover { color: var(--text); }

/* ──── Tablet landscape ──── */
@media (max-width: 1024px) {
    .container { max-width: 100%; }
    section { padding: 96px 0; }
    .page-header { padding-top: 108px; padding-bottom: 48px; }
}

/* ──── Tablet portrait ──── */
@media (max-width: 768px) {
    .site-nav { padding: 0 20px; }
    .nav-left { gap: 24px; }
    .container { padding: 0 20px; }
    section { padding: 80px 0; }
    .page-header { padding-top: 100px; padding-bottom: 40px; }
    .page-header h1 { font-size: 24px; }
    .page-body { padding: 40px 0 80px; }
    .page-body h2 { margin-top: 40px; }
    .page-body h3 { margin-top: 24px; }
    .page-body table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .page-body td:first-child { white-space: normal; }
    .site-footer { flex-direction: column; gap: 12px; text-align: center; }
}

/* ──── Mobile ──── */
@media (max-width: 480px) {
    body { font-size: 14px; }
    .site-nav { padding: 0 16px; height: 48px; }
    .nav-links { display: none; }
    .nav-install { padding: 5px 12px; font-size: 12px; }
    .container { padding: 0 16px; }
    section { padding: 64px 0; }
    .page-header { padding-top: 88px; padding-bottom: 32px; }
    .page-header h1 { font-size: 22px; }
    .page-header p { font-size: 14px; }
    .page-body { max-width: 100%; padding: 32px 0 64px; }
    .page-body h2 { font-size: 12px; margin-top: 36px; }
    .page-body code { font-size: 11.5px; }
    .domain-list li { font-size: 12px; }
    .site-footer { padding: 20px 16px; }
}