:root {
    --bg: #f6f4ef;
    --surface: #ffffff;
    --ink: #1c2530;
    --muted: #5d6875;
    --line: #dfdbd1;
    --accent: #c2552d;
    --accent-ink: #ffffff;
    --sky-top: #20364d;
    --sky-bottom: #e9a877;
    --ridge-1: #6f8296;
    --ridge-2: #435a70;
    --ridge-3: #22303f;
    --walkup: #2f7d5b;
    --scramble: #9a6b12;
    --technical: #b0452a;
    --expedition: #5a3f99;
    --radius: 10px;
}
@media (prefers-color-scheme: dark) {
    :root {
        --bg: #12171d;
        --surface: #1b222b;
        --ink: #e9edf1;
        --muted: #9aa6b3;
        --line: #2c3541;
        --accent: #e5794f;
        --accent-ink: #14100d;
        --sky-top: #0c1622;
        --sky-bottom: #8a5a45;
        --ridge-1: #3b4b5c;
        --ridge-2: #27343f;
        --ridge-3: #12171d;
        --walkup: #5cc095;
        --scramble: #dba63f;
        --technical: #ee8a6c;
        --expedition: #a892e8;
    }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
h1, h2, h3 { font-family: Georgia, "Iowan Old Style", "Times New Roman", serif; line-height: 1.15; margin: 0; text-wrap: balance; }
main { max-width: 1080px; margin: 0 auto; padding: 0 16px 48px; }

/* Header and footer */
.site-header {
    max-width: 1080px; margin: 0 auto; padding: 14px 16px;
    display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 700; letter-spacing: .02em; }
.brand svg { width: 28px; height: 21px; fill: var(--accent); }
.site-header nav { display: flex; gap: 18px; }
.site-header nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
.site-header nav a:hover { color: var(--ink); }
.site-footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; text-align: center; padding: 20px 16px 32px; }

/* Hero */
.hero {
    position: relative; overflow: hidden; border-radius: var(--radius);
    min-height: 260px; display: flex; align-items: flex-start;
    background: linear-gradient(var(--sky-top), var(--sky-bottom));
}
.ridges { position: absolute; inset: auto 0 0 0; width: 100%; height: 70%; }
.ridge.r1 { fill: var(--ridge-1); }
.ridge.r2 { fill: var(--ridge-2); }
.ridge.r3 { fill: var(--ridge-3); }
.hero-text { position: relative; padding: 32px 28px; color: #fff; max-width: 34rem; }
.hero-text h1 { font-size: clamp(2rem, 6vw, 3.25rem); }
.hero-text p { margin: 10px 0 0; font-size: 1.05rem; opacity: .92; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 16px 0 32px; }
.stats div { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; }
.stats strong { display: block; font-size: 1.5rem; font-variant-numeric: tabular-nums; }
.stats span { color: var(--muted); font-size: .85rem; }

/* Toolbar */
.toolbar { display: flex; align-items: end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar h2 { font-size: 1.6rem; }
.toolbar form { display: flex; align-items: center; gap: 8px; }
.toolbar label { color: var(--muted); font-size: .9rem; }

/* Peak cards */
.peak-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 16px; }
.peak-card {
    display: block; height: 100%; padding: 18px; color: inherit; text-decoration: none;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.peak-card:hover, .peak-card:focus-visible { transform: translateY(-2px); border-color: var(--accent); box-shadow: 0 6px 18px rgb(0 0 0 / .08); outline: none; }
.peak-card h3 { font-size: 1.35rem; margin-top: 10px; }
.where { color: var(--muted); margin: 4px 0 0; font-size: .92rem; }
.elevation { margin: 14px 0 6px; display: flex; align-items: baseline; gap: 8px; font-variant-numeric: tabular-nums; }
.elevation strong { font-size: 1.25rem; }
.elevation span { color: var(--muted); font-size: .9rem; }
.meter { display: block; height: 4px; border-radius: 2px; background: var(--line); overflow: hidden; }
.meter span { display: block; height: 100%; background: var(--accent); }
.count { color: var(--muted); font-size: .85rem; margin: 10px 0 0; }

.badge { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 2px 8px; border-radius: 999px; border: 1px solid currentColor; }
.badge-walkup { color: var(--walkup); }
.badge-scramble { color: var(--scramble); }
.badge-technical { color: var(--technical); }
.badge-expedition { color: var(--expedition); }

/* Peak detail */
.crumb { margin: 8px 0 16px; }
.crumb a { text-decoration: none; }
.peak-detail { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.peak-detail h1 { font-size: clamp(2rem, 6vw, 3rem); margin-top: 10px; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 20px 0; padding: 16px 0; border-block: 1px solid var(--line); }
.facts dt { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; }
.facts dd { margin: 2px 0 0; font-size: 1.3rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.facts small { color: var(--muted); font-size: .85rem; font-weight: 400; margin-left: 4px; }
.description { margin: 0; max-width: 65ch; font-size: 1.05rem; }

.columns { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 32px; margin-top: 32px; }
.columns h2 { font-size: 1.4rem; margin-bottom: 14px; }
.ascents { list-style: none; margin: 0; padding: 0; }
.ascents li { padding: 14px 0; border-top: 1px solid var(--line); }
.ascents li:first-child { border-top: 0; padding-top: 0; }
.ascents p { margin: 0; }
.who { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.who time, .route { color: var(--muted); font-size: .9rem; }
.notes { margin-top: 6px !important; }
.empty { color: var(--muted); }
.notice { background: color-mix(in srgb, var(--walkup) 14%, transparent); border-left: 3px solid var(--walkup); padding: 10px 14px; border-radius: 4px; margin: 0 0 16px; }
.errors { background: color-mix(in srgb, var(--technical) 12%, transparent); border-left: 3px solid var(--technical); padding: 10px 14px 10px 32px; border-radius: 4px; margin: 0 0 16px; }

/* Forms */
.ascent-form { display: grid; gap: 6px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; }
.ascent-form label { font-weight: 600; font-size: .92rem; margin-top: 8px; }
.ascent-form label small { color: var(--muted); font-weight: 400; margin-left: 4px; }
input, select, textarea {
    font: inherit; color: var(--ink); background: var(--bg);
    border: 1px solid var(--line); border-radius: 6px; padding: 8px 10px; width: 100%;
}
select { width: auto; }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
button {
    font: inherit; font-weight: 700; cursor: pointer; margin-top: 14px; justify-self: start;
    color: var(--accent-ink); background: var(--accent); border: 0; border-radius: 6px; padding: 10px 18px;
}
button:hover { filter: brightness(1.08); }

/* Status page */
.lede { color: var(--muted); margin: 6px 0 20px; }
.status { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 20px; margin: 0; }
.status dt { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; margin-top: 14px; }
.status dd { margin: 2px 0 14px; overflow-wrap: anywhere; }
main > h1 { font-size: 2.2rem; margin-top: 16px; }