/* ==========================================================================
 * velocity.report — shared header
 * Dark instrument-style navigation bar. Loaded on every page so the
 * homepage and content pages share an identical chrome.
 * ========================================================================== */

.site-header {
    position: sticky; top: 0; z-index: 50;
    /* Frosted glass to match the hero copy panel: low-opacity dark fill with
     * a heavy blur, so large point-cloud features behind the bar still read
     * through it as soft silhouettes rather than getting hidden behind a
     * near-opaque plate. */
    background: rgba(7, 9, 12, 0.42);
    backdrop-filter: blur(18px) saturate(115%);
    -webkit-backdrop-filter: blur(18px) saturate(115%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    font-family: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
    color: #e6ebf2;
}
.site-header .wrap {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}
.site-header .row {
    display: flex;
    align-items: center;
    gap: 14px;
    height: 56px;
}
.site-header a { text-decoration: none; color: inherit; }
.site-header .brand {
    display: inline-flex; align-items: baseline; gap: 8px;
    font-weight: 700; font-size: 16px; letter-spacing: -0.01em;
    color: #e6ebf2;
}
.site-header .brand .dot {
    width: 8px; height: 8px; border-radius: 999px;
    background: #10b981;
    box-shadow: 0 0 0 3px rgba(16,185,129,0.18), 0 0 16px rgba(16,185,129,0.55);
    animation: hdr-pulse 2.4s ease-in-out infinite;
}
@keyframes hdr-pulse {
    0%, 100% { box-shadow: 0 0 0 3px rgba(16,185,129,0.18), 0 0 16px rgba(16,185,129,0.55); }
    50%      { box-shadow: 0 0 0 5px rgba(16,185,129,0.10), 0 0 22px rgba(16,185,129,0.75); }
}
.site-header .nav-links {
    display: flex; gap: 2px; margin-left: 8px;
}
.site-header .nav-links a {
    display: inline-flex; align-items: center;
    padding: 6px 10px; border-radius: 6px;
    font-size: 14px; font-weight: 500; color: #a7b2c0;
}
.site-header .nav-links a:hover { color: #e6ebf2; background: #111820; }
.site-header .nav-spacer { flex: 1; }
.site-header .nav-icons {
    display: flex; gap: 6px; align-items: center;
}
.site-header .nav-icons .icon-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; border-radius: 6px;
    color: #a7b2c0;
}
.site-header .nav-icons .icon-btn:hover { color: #e6ebf2; background: #111820; }
.site-header .nav-code {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 12px; border-radius: 6px;
    background: transparent; color: #e6ebf2;
    font-size: 13px; font-weight: 600;
    border: 1px solid #243140;
}
.site-header .nav-code:hover { background: #111820; border-color: #2c3a4a; color: #e6ebf2; }
.site-header .nav-code svg { display: block; }
.site-header .nav-cta {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 7px 12px; border-radius: 6px;
    background: #047857; color: white;
    font-size: 13px; font-weight: 600;
    border: 1px solid #065f46;
}
.site-header .nav-cta:hover { background: #10b981; color: white; }

/* Mobile hamburger */
.site-header .mobile-toggle {
    display: none;
    background: transparent; border: 0; padding: 6px;
    color: #a7b2c0; cursor: pointer; border-radius: 6px;
    align-items: center; justify-content: center;
}
.site-header .mobile-toggle:hover { color: #e6ebf2; background: #111820; }
/* Mobile menu — overlays as an absolute drop-down so opening it doesn't
 * resize the sticky bar and push the rest of the page down. Inherits the
 * same frosted-glass treatment as the nav row so it reads as part of it. */
.site-header .mobile-menu {
    display: none;
    flex-direction: column;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 6px 16px 12px;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: rgba(7, 9, 12, 0.82);
    backdrop-filter: blur(18px) saturate(115%);
    -webkit-backdrop-filter: blur(18px) saturate(115%);
}
.site-header .wrap { position: relative; }
.site-header .mobile-menu.open { display: flex; }
.site-header .mobile-menu a {
    display: block;
    padding: 10px 6px;
    color: #a7b2c0;
    font-size: 14px;
    border-radius: 6px;
}
.site-header .mobile-menu a:hover { color: #e6ebf2; background: #111820; }

@media (max-width: 820px) {
    .site-header .nav-links { display: none; }
    .site-header .mobile-toggle { display: inline-flex; }
    /* Mobile: keep all three actions (Discord, Code, Download) visible but
     * drop the text labels so the bar reads as a row of three buttons. */
    .site-header .nav-code .label,
    .site-header .nav-cta .label { display: none; }
    .site-header .nav-code { padding: 7px 10px; gap: 0; }
    .site-header .nav-cta { padding: 7px 10px; gap: 0; }
}
@media (max-width: 520px) {
    .site-header .row { gap: 10px; }
}

/* Anchor offset so the sticky header doesn't cover the target */
html { scroll-padding-top: 72px; }