:root {
    --sec-accent: #7c3aed;
    /* default purple */
    --sec-accent-2: #22d3ee;
    /* cyan */
    --bg-elev: rgba(17, 24, 39, .6);
    --bg-card: rgba(31, 41, 55, .7);
    --border: rgba(255, 255, 255, .08);
    --text: #e5e7eb;
    --muted: #9ca3af;
}

/* Top navigation */
.sec-topnav {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(8px);
    background: linear-gradient(180deg, rgba(12, 16, 28, .85) 0%, rgba(12, 16, 28, .55) 100%);
    border-bottom: 1px solid var(--border);
}

.sec-topnav .nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sec-topnav a {
    color: var(--text);
    text-decoration: none;
}

.sec-topnav a:hover {
    text-decoration: underline;
}

.sec-topnav .brand {
    font-weight: 700;
    letter-spacing: .2px;
}

.sec-topnav .links {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 14px;
}

/* Space under sticky nav for first content block */
body .container {
    scroll-margin-top: 64px;
}

/* Cloned site header adjustments (if homepage header is copied in) */
.site-header-cloned {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(8px);
}

.site-footer-cloned {
    margin-top: 40px;
}

/* Hero */
.sec-hero {
    position: relative;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 24px;
    margin: 12px 0 24px;
    overflow: hidden;
    background:
        radial-gradient(1200px 500px at 90% -20%, color-mix(in oklab, var(--sec-accent) 22%, transparent) 0%, transparent 60%),
        radial-gradient(900px 420px at -10% -30%, color-mix(in oklab, var(--sec-accent-2) 14%, transparent) 0%, transparent 60%),
        rgba(12, 16, 28, .65);
    box-shadow: 0 12px 40px rgba(0, 0, 0, .35);
}

.sec-hero h1 {
    font-size: 34px;
    line-height: 1.2;
    margin: 0 0 6px;
}

.sec-hero p {
    color: var(--muted);
    margin: 0;
}

.sec-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: #c7d2fe;
    background: rgba(59, 130, 246, .12);
    border: 1px solid rgba(96, 165, 250, .25);
    padding: 4px 8px;
    border-radius: 999px;
    margin-bottom: 10px
}

.sec-actions {
    margin-top: 14px;
    display: flex;
    gap: 10px;
    flex-wrap: wrap
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    background: var(--bg-card);
    text-decoration: none;
    font-size: 13px
}

.btn:hover {
    border-color: color-mix(in oklab, var(--sec-accent) 40%, var(--border));
    background: rgba(31, 41, 55, .9)
}

.btn.primary {
    background: linear-gradient(135deg, color-mix(in oklab, var(--sec-accent) 65%, #000) 0%, color-mix(in oklab, var(--sec-accent-2) 50%, #000) 100%);
    border-color: transparent
}

.btn.primary:hover {
    filter: brightness(1.08)
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    margin: 16px 0
}

.card {
    border: 1px solid var(--border);
    background: var(--bg-card);
    border-radius: 12px;
    padding: 12px 14px;
    text-decoration: none;
    color: var(--text)
}

.card:hover {
    border-color: color-mix(in oklab, var(--sec-accent) 40%, var(--border));
    background: rgba(31, 41, 55, .9)
}

.card .k {
    color: var(--muted);
    font-size: 12px
}

/* Callouts */
.callout {
    border-left: 3px solid var(--sec-accent);
    background: rgba(59, 130, 246, .06);
    padding: 10px 12px;
    border-radius: 10px;
    margin: 10px 0
}

/* Code copy */
pre {
    position: relative
}

.copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 4px 6px;
    border-radius: 8px;
    font-size: 12px;
    border: 1px solid var(--border);
    background: rgba(0, 0, 0, .35);
    color: var(--text);
    cursor: pointer
}

.copy-btn:hover {
    background: rgba(0, 0, 0, .5)
}

/* Footer */
.sec-footer {
    margin-top: 28px;
    padding-top: 14px;
    border-top: 1px dashed var(--border);
    color: var(--muted);
    font-size: 12px
}

/* Inline TOC (optional) */
.mini-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 6px 0
}

.mini-nav a {
    color: #93c5fd;
    text-decoration: none
}

.mini-nav a:hover {
    text-decoration: underline
}

/* Breadcrumb */
.sec-breadcrumb {
    color: var(--muted);
    font-size: 13px;
    margin: 8px 0 10px;
}

.sec-breadcrumb a {
    color: #93c5fd;
    text-decoration: none;
}

.sec-breadcrumb a:hover {
    text-decoration: underline;
}