/* diesel-tracker – schlankes, eigenes CSS. Kein Framework nötig. */

:root {
    color-scheme: light dark;

    --bg: #f5f6f8;
    --surface: #ffffff;
    --surface-2: #f0f2f5;
    --border: #dfe3e8;
    --text: #1b1f24;
    --text-muted: #666e7a;
    --accent: #0b5fa4;
    --good: #1a7f4b;
    --good-bg: #e6f5ec;
    --bad: #b03a2e;
    --warn-bg: #fdf1d6;
    --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
    --radius: 10px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #15181c;
        --surface: #1e2228;
        --surface-2: #252a31;
        --border: #343a43;
        --text: #e8eaed;
        --text-muted: #9aa3ae;
        --accent: #6fb3f0;
        --good: #5fd39a;
        --good-bg: #17372a;
        --bad: #f0857a;
        --warn-bg: #3c3420;
        --shadow: none;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    -webkit-text-size-adjust: 100%;
}

.wrap {
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ---------------------------------------------------------- Kopfbereich */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 20px 0 0;
}

.topbar h1 {
    margin: 0;
    font-size: 1.45rem;
    letter-spacing: -.01em;
}

.sub {
    margin: 4px 0 14px;
    color: var(--text-muted);
    font-size: .875rem;
}

.tabs {
    display: flex;
    gap: 4px;
}

.tab {
    padding: 9px 14px;
    border: 1px solid transparent;
    border-bottom: none;
    border-radius: 8px 8px 0 0;
    color: var(--text-muted);
    text-decoration: none;
    font-size: .9rem;
    font-weight: 500;
}

.tab:hover { color: var(--text); background: var(--surface-2); }

.tab.is-active {
    background: var(--bg);
    border-color: var(--border);
    color: var(--text);
    margin-bottom: -1px;
    padding-bottom: 10px;
}

/* ------------------------------------------------- Durchschnittspreis (Hero) */
.hero {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px 18px 14px;
    margin: 22px 0 10px;
}

.hero-head {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 12px;
}

.hero-label {
    display: block;
    font-size: .78rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--text-muted);
}

.hero-price {
    display: block;
    margin: 2px 0 5px;
    font-size: clamp(2.4rem, 9vw, 3.3rem);
    font-weight: 700;
    line-height: 1.03;
    letter-spacing: -.02em;
    font-variant-numeric: tabular-nums;
}

.hero-sub {
    display: block;
    font-size: .83rem;
    color: var(--text-muted);
}

.delta { font-weight: 600; white-space: nowrap; }
.delta.is-up { color: var(--bad); }
.delta.is-down { color: var(--good); }

.chart-box--hero { height: 200px; }

/* -------------------------------------------------------------- Kennzahlen */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin: 0 0 22px;
}

.stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 12px 14px;
}

.stat-label {
    display: block;
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-muted);
}

.stat-value {
    display: block;
    margin-top: 2px;
    font-size: 1.3rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------------ Liste */
.stations {
    list-style: none;
    margin: 0 0 28px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.station {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.station.is-cheapest { border-color: var(--good); }

.station-row {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 12px 14px;
    background: none;
    border: 0;
    font: inherit;
    color: inherit;
    text-align: left;
    cursor: pointer;
}

.station-row:hover { background: var(--surface-2); }
.station-row:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

.rank {
    flex: 0 0 26px;
    height: 26px;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--surface-2);
    color: var(--text-muted);
    font-size: .8rem;
    font-weight: 600;
}

.is-cheapest .rank { background: var(--good-bg); color: var(--good); }

.ident { flex: 1 1 auto; min-width: 0; }

.name {
    display: block;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.meta {
    display: block;
    font-size: .8rem;
    color: var(--text-muted);
}

.price { flex: 0 0 auto; text-align: right; }

.price-value {
    display: block;
    font-size: 1.15rem;
    font-weight: 650;
    font-variant-numeric: tabular-nums;
}

.is-cheapest .price-value { color: var(--good); }

.price-time {
    display: block;
    font-size: .75rem;
    color: var(--text-muted);
}

.chevron {
    flex: 0 0 10px;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    transition: transform .15s ease;
}

.station-row[aria-expanded="true"] .chevron { transform: rotate(225deg); }

.badge {
    display: inline-block;
    margin-left: 6px;
    padding: 1px 6px;
    border-radius: 999px;
    background: var(--surface-2);
    font-size: .7rem;
    color: var(--text-muted);
}

.badge-warn { background: var(--warn-bg); color: var(--text); }

/* ------------------------------------------------------------- Detail/Chart */
.detail {
    border-top: 1px solid var(--border);
    padding: 12px 14px 16px;
    background: var(--surface);
}

.detail-head {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.detail-title { font-size: .85rem; color: var(--text-muted); }

.range { display: flex; gap: 4px; }

.range-btn {
    padding: 4px 9px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-muted);
    font: inherit;
    font-size: .78rem;
    cursor: pointer;
}

.range-btn:hover { background: var(--surface-2); color: var(--text); }

.range-btn.is-active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.chart-box { position: relative; height: 240px; }

.detail-note {
    margin: 10px 0 0;
    font-size: .85rem;
    color: var(--text-muted);
}

/* ---------------------------------------------------------------- Hinweise */
.notice {
    background: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: var(--radius);
    padding: 14px 16px;
    margin: 22px 0;
    font-size: .92rem;
}

.notice-error { border-left-color: #c0392b; }

code {
    background: var(--surface-2);
    padding: 1px 5px;
    border-radius: 4px;
    font-size: .85em;
}

.foot {
    margin: 28px 0 32px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: .8rem;
    color: var(--text-muted);
}

.foot a { color: var(--accent); }

@media (max-width: 480px) {
    .price-value { font-size: 1.05rem; }
    .station-row { gap: 9px; padding: 11px 12px; }
    .rank { display: none; }
}