/*
  Layout: header/nav, section scaffolding, race-lane dividers, footer.
*/

/* ---------- Header / Nav ---------- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding-block: 1.4rem;
    transition: padding var(--dur-fast) var(--ease-premium), background var(--dur-fast) var(--ease-premium), border-color var(--dur-fast) var(--ease-premium);
    border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
    padding-block: 0.85rem;
    background: rgba(7, 8, 10, 0.82);
    backdrop-filter: blur(14px) saturate(1.1);
    -webkit-backdrop-filter: blur(14px) saturate(1.1);
    border-bottom-color: var(--c-border);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.55rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--c-white);
    white-space: nowrap;
}
.logo span { color: var(--c-gold); }

.nav-desktop {
    display: none;
}
@media (min-width: 960px) {
    .nav-desktop { display: flex; align-items: center; gap: 2.1rem; }
}
.nav-desktop a {
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--c-white-dim);
    position: relative;
    padding-block: 0.3rem;
    transition: color var(--dur-fast) ease;
}
.nav-desktop a::after {
    content: "";
    position: absolute;
    left: 0; bottom: -2px;
    width: 0; height: 1px;
    background: var(--c-gold);
    transition: width var(--dur-fast) var(--ease-premium);
}
.nav-desktop a:hover, .nav-desktop a:focus-visible { color: var(--c-white); }
.nav-desktop a:hover::after, .nav-desktop a:focus-visible::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 0.9rem; }

.nav-toggle {
    display: inline-flex;
    background: none;
    border: 1px solid var(--c-border-strong);
    border-radius: 8px;
    width: 44px; height: 44px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
@media (min-width: 960px) { .nav-toggle { display: none; } }
.nav-toggle svg { width: 20px; height: 20px; stroke: var(--c-white); }

.nav-mobile {
    position: fixed;
    inset: 0;
    background: var(--c-black);
    z-index: 99;
    display: flex;
    flex-direction: column;
    padding: 6.5rem var(--gutter) 3rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-med) var(--ease-premium), transform var(--dur-med) var(--ease-premium);
}
.nav-mobile.is-open { opacity: 1; transform: translateY(0); pointer-events: auto; }
.nav-mobile a {
    font-family: var(--font-display);
    font-size: 2.4rem;
    text-transform: uppercase;
    padding-block: 0.55rem;
    border-bottom: 1px solid var(--c-border);
    color: var(--c-white);
}
.nav-mobile .btn { margin-top: 2rem; align-self: flex-start; }

/* ---------- Sections ---------- */
section { position: relative; }

.section-pad {
    padding-block: var(--section-space);
}

.section-head {
    margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
}
.section-head.center { text-align: center; margin-inline: auto; }
.section-head.center .section-lede { margin-inline: auto; }
.section-head.split {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
}

/* Bib-style section index badge, e.g. "01 / 09" — nods to race-number bibs in the photos */
.section-bib {
    position: absolute;
    top: clamp(1.5rem, 4vw, 3rem);
    right: var(--gutter);
    font-family: var(--font-display);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    color: var(--c-gray-dim);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.section-bib strong { color: var(--c-gold); font-weight: 700; }

/* Race-lane divider between sections: thin diagonal gold lines */
.lane-divider {
    height: 44px;
    width: 100%;
    position: relative;
    overflow: hidden;
    opacity: 0.55;
}
.lane-divider svg { width: 100%; height: 100%; }

/* ---------- Grids ---------- */
.grid-2 { display: grid; gap: clamp(2rem, 5vw, 5rem); grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) { .grid-2 { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: center; } }

.grid-cards {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 640px) { .grid-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1100px) { .grid-cards.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1100px) { .grid-cards.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.grid-cards > * { min-width: 0; }

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--c-border);
    padding-block: 3.5rem 2rem;
    background: var(--c-black-soft);
}
.footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
}
.footer-brand .logo { font-size: 1.8rem; }
.footer-tagline {
    margin-top: 0.75rem;
    max-width: 34ch;
    color: var(--c-white-dim);
    font-size: 0.95rem;
}
.footer-cols { display: flex; gap: clamp(2rem, 6vw, 6rem); flex-wrap: wrap; }
.footer-col h4 {
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--c-gold);
    margin-bottom: 1rem;
}
.footer-col a, .footer-col p {
    display: block;
    color: var(--c-white-dim);
    font-size: 0.92rem;
    padding-block: 0.3rem;
}
.footer-col a:hover { color: var(--c-white); }

.footer-bottom {
    border-top: 1px solid var(--c-border);
    padding-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--c-gray);
}
.footer-socials { display: flex; gap: 0.9rem; }
.footer-socials a {
    width: 38px; height: 38px;
    border: 1px solid var(--c-border-strong);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--dur-fast), background var(--dur-fast);
}
.footer-socials a:hover { border-color: var(--c-gold); background: rgba(var(--c-gold-rgb), 0.08); }
.footer-socials svg { width: 16px; height: 16px; stroke: var(--c-white); }