:root {
    --bg: #f5f6fa;
    --surface: #ffffff;
    --border: #e2e5ee;
    --text: #1d2233;
    --muted: #767d93;
    --accent: #4f46e5;
    --accent-soft: #eef0ff;
    --danger: #d13d4b;
    --radius: 12px;
    --shadow: 0 1px 2px rgba(20, 25, 45, .06), 0 8px 24px rgba(20, 25, 45, .06);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

h1, h2, h3 { margin: 0 0 .5rem; line-height: 1.25; }
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.num { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- Login ---------- */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.login-card {
    width: 100%; max-width: 380px; background: var(--surface); padding: 32px;
    border-radius: 16px; box-shadow: var(--shadow); text-align: center;
}
.login-logo { font-size: 34px; margin: 0 0 4px; color: var(--accent); }
.login-card p { margin: 0 0 20px; font-size: 14px; }
.login-card label { display: block; text-align: left; font-size: 13px; font-weight: 600; margin-bottom: 6px; }
.alert { background: #fdecee; color: var(--danger); padding: 10px 12px; border-radius: 8px; font-size: 14px; }

/* ---------- Shell ---------- */
.topbar { background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar-inner {
    max-width: 1080px; margin: 0 auto; padding: 14px 20px;
    display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 17px; }
.brand-mark { color: var(--accent); margin-right: 4px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.who { font-size: 14px; color: var(--muted); }
.wrap { max-width: 1080px; margin: 0 auto; padding: 24px 20px 64px; }

/* ---------- Summary ---------- */
.summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.stat-label { display: block; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.stat-value { display: block; font-size: 22px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 4px; margin-bottom: 16px; }
.tab {
    --card-color: var(--accent);
    flex: 0 0 auto; background: var(--surface); border: 1px solid var(--border);
    border-radius: 999px; padding: 9px 16px; font-size: 14px; font-weight: 600;
    color: var(--muted); cursor: pointer; white-space: nowrap;
}
.tab:hover { color: var(--text); }
.tab.is-active { background: var(--card-color); border-color: var(--card-color); color: #fff; }

/* ---------- Panels ---------- */
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.panel-title { font-size: 17px; }
.panel-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.card-stats { display: flex; gap: 16px; font-size: 14px; color: var(--muted); }
.head-right { display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.head-actions { display: flex; gap: 8px; }
.period-line { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 6px 0 0; font-size: 13px; }
.period-line select { width: auto; max-width: 320px; padding: 5px 9px; font-size: 13px; }
.linkish {
    background: none; border: 0; padding: 0; font: inherit; font-size: 13px;
    color: var(--accent); cursor: pointer; text-decoration: underline;
}
.archived-note {
    background: var(--accent-soft); border-radius: 8px; padding: 10px 14px;
    font-size: 13px; color: var(--muted); margin: 0 0 16px;
}
.radio { display: flex; align-items: flex-start; gap: 8px; margin-top: 10px; font-size: 14px; color: var(--text); font-weight: 400; }
.radio input { width: auto; margin-top: 3px; }
.small { font-size: 12px; margin: 6px 0 0; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.card-stats strong { color: var(--text); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px; }
.card-tile {
    --card-color: var(--accent);
    text-align: left; cursor: pointer; background: var(--surface); color: var(--text);
    border: 1px solid var(--border); border-top: 3px solid var(--card-color);
    border-radius: var(--radius); padding: 16px; display: flex; flex-direction: column; gap: 2px;
}
.card-tile:hover { border-color: var(--card-color); }
.card-name { font-weight: 600; font-size: 14px; }
.card-miles { font-size: 26px; font-weight: 700; color: var(--card-color); font-variant-numeric: tabular-nums; }
.card-period { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.card-sub { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
.card-foot { margin-top: 8px; font-size: 13px; color: var(--muted); }
.card-foot + .card-foot { margin-top: 2px; font-size: 12px; }

/* ---------- Month-end prompt ---------- */
.notice {
    display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap;
    background: var(--accent-soft); border: 1px solid var(--accent);
    border-radius: var(--radius); padding: 12px 16px; margin-bottom: 16px;
}
.notice p { margin: 0; font-size: 14px; }

/* ---------- Miles by month ---------- */
.chart { position: relative; margin-top: 26px; border-top: 1px solid var(--border); padding-top: 20px; }
.chart-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; }
.chart-head .panel-title { font-size: 15px; margin-bottom: 2px; }
.chart-note, .small { font-size: 12px; }

.legend { display: flex; flex-wrap: wrap; gap: 10px 16px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.swatch { width: 10px; height: 10px; border-radius: 3px; display: inline-block; flex: 0 0 auto; }

.chart-body { display: flex; gap: 10px; margin-top: 16px; }
.chart-scale {
    display: flex; flex-direction: column; justify-content: space-between;
    height: 172px; font-size: 11px; color: var(--muted); text-align: right;
    min-width: 42px; font-variant-numeric: tabular-nums;
}
.chart-plot {
    position: relative; flex: 1; display: flex; gap: 6px; align-items: flex-end;
    overflow-x: auto; padding-bottom: 2px;
    background:
        linear-gradient(var(--border), var(--border)) left 0 top 0 / 100% 1px no-repeat,
        linear-gradient(var(--border), var(--border)) left 0 top 75px / 100% 1px no-repeat;
}
.chart-col {
    flex: 1 1 0; min-width: 26px; display: flex; flex-direction: column; gap: 6px;
    cursor: default; border-radius: 6px;
}
.chart-col:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.chart-stack { display: flex; flex-direction: column-reverse; gap: 2px; height: 150px; }
.chart-seg { border-radius: 2px; min-height: 2px; }
.chart-seg:last-child { border-radius: 4px 4px 2px 2px; }
.chart-col:hover .chart-seg { opacity: .55; }
.chart-col:hover .chart-seg:hover { opacity: 1; }
.chart-empty { height: 2px; margin-top: auto; background: var(--border); border-radius: 2px; }
.chart-x { font-size: 11px; color: var(--muted); text-align: center; }

.chart-tip {
    position: absolute; bottom: 58px; transform: translateX(-50%);
    background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
    box-shadow: var(--shadow); padding: 12px 14px; min-width: 240px; z-index: 5;
    pointer-events: none;
}
.tip-head { font-size: 13px; font-weight: 700; }
.tip-total { font-size: 12px; color: var(--muted); margin-top: 2px; }
.tip-table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 12px; }
.tip-table th {
    display: flex; align-items: center; gap: 6px; font-weight: 500;
    text-align: left; padding: 3px 10px 3px 0; white-space: nowrap;
}
.tip-table td { padding: 3px 0 3px 10px; text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.tip-table em { font-style: normal; color: var(--muted); }
.tip-table tr.is-hovered { background: var(--accent-soft); }
.tip-empty { margin: 8px 0 0; font-size: 12px; color: var(--muted); }

/* ---------- Bonus meter ----------
   The fill colour carries the state, and .meter-state always says it in words,
   so the meaning never rests on colour alone. */
.meter {
    --meter: var(--accent);
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 14px 16px; margin-bottom: 18px;
}
.meter.is-pending { --meter: #ec835a; }
.meter.is-good { --meter: #0ca30c; }
.meter.is-over { --meter: #d03b3b; }
.meter.is-neutral { --meter: var(--accent); }

.meter-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 9px; }
.meter-title { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.meter-scale { font-size: 13px; color: var(--muted); }

.meter-track {
    position: relative; height: 10px; border-radius: 5px; overflow: hidden;
    background: var(--border);
    background: color-mix(in srgb, var(--meter) 16%, var(--surface));
}
.meter-fill {
    height: 100%; width: 0; border-radius: 0 4px 4px 0;
    background: var(--meter); transition: width .25s ease;
}
.meter-threshold { position: absolute; top: 0; bottom: 0; width: 2px; background: var(--surface); }
.meter-threshold span {
    position: absolute; top: 13px; left: 0; transform: translateX(-50%);
    font-size: 11px; color: var(--muted); white-space: nowrap;
}
.meter-state { margin: 22px 0 0; font-size: 13px; color: var(--text); }
.auto-note { margin: 0; font-size: 12px; color: var(--muted); max-width: 230px; line-height: 1.4; }
.card-rule { margin-top: 6px; font-size: 12px; font-weight: 600; }
.card-rule.is-pending { color: #b4571f; }
.card-rule.is-good { color: #0a7d0a; }
.card-rule.is-over { color: #b32b2b; }
.card-rule.is-neutral { color: var(--muted); }

.tag {
    display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: .03em;
    padding: 1px 6px; border-radius: 4px; vertical-align: 1px;
    background: var(--accent-soft); color: var(--accent);
}

/* ---------- Forms ---------- */
.entry-form {
    display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end;
    background: var(--accent-soft); border-radius: var(--radius); padding: 16px; margin-bottom: 20px;
}
.field { display: flex; flex-direction: column; gap: 5px; min-width: 130px; }
.field.grow { flex: 1 1 200px; }
.field label, .modal label { font-size: 12px; font-weight: 600; color: var(--muted); }
input, select {
    font: inherit; padding: 9px 11px; border: 1px solid var(--border);
    border-radius: 8px; background: var(--surface); color: var(--text); width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }
.presets { display: flex; gap: 4px; margin-top: 2px; }
.preset {
    border: 1px solid var(--border); background: var(--surface); border-radius: 6px;
    padding: 2px 7px; font-size: 12px; color: var(--muted); cursor: pointer;
}
.preset:hover { border-color: var(--accent); color: var(--accent); }
.preview { font-size: 18px; font-weight: 700; color: var(--accent); padding: 8px 0; white-space: nowrap; }

.btn {
    font: inherit; font-weight: 600; border-radius: 8px; padding: 9px 16px;
    border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer;
}
.btn:hover { border-color: var(--muted); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-ghost { background: transparent; }
.btn-block { width: 100%; margin-top: 16px; }
.btn-small { padding: 5px 10px; font-size: 13px; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { border-color: var(--danger); }

/* ---------- Table ---------- */
.table-wrap { overflow-x: auto; }
.grid { width: 100%; border-collapse: collapse; font-size: 14px; }
.grid th {
    text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em;
    color: var(--muted); padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.grid th.num { text-align: right; }
.grid td { padding: 10px; border-bottom: 1px solid var(--border); }
.grid tr:last-child td { border-bottom: 0; }
.actions-col { text-align: right; white-space: nowrap; }
.empty { text-align: center; color: var(--muted); padding: 28px 0; margin: 0; }

/* ---------- Modal + toast ---------- */
.modal { border: 0; border-radius: var(--radius); padding: 24px; width: min(420px, 92vw); box-shadow: var(--shadow); color: var(--text); background: var(--surface); }
.modal::backdrop { background: rgba(16, 20, 35, .45); }
.modal label { display: block; margin-top: 12px; margin-bottom: 4px; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 20px; }

.toast {
    position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
    display: flex; align-items: center; gap: 14px;
    background: #1d2233; color: #fff; padding: 11px 18px; border-radius: 999px;
    font-size: 14px; box-shadow: var(--shadow); z-index: 10;
}
.toast-action {
    background: none; border: 0; padding: 0; font: inherit; font-weight: 700;
    color: #9ea6ff; cursor: pointer; text-decoration: underline;
}
.toast.is-error { background: var(--danger); }

@media (max-width: 720px) {
    .summary { grid-template-columns: repeat(2, 1fr); }
    .head-right { align-items: flex-start; width: 100%; }
    .chart-col { min-width: 34px; }
    .chart-tip { min-width: 200px; }
    .period-line select { max-width: 100%; }
    .entry-form .btn-primary { width: 100%; }
}

@media (prefers-color-scheme: dark) {
    .card-rule.is-pending { color: #ec835a; }
    .card-rule.is-good { color: #4bbd4b; }
    .card-rule.is-over { color: #e56b6b; }
    :root {
        --bg: #14161f; --surface: #1c1f2b; --border: #2c3040;
        --text: #e9ebf3; --muted: #9aa1b8; --accent: #8b8cf6; --accent-soft: #23253a;
        --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);
    }
    .alert { background: #3a2026; }
    .toast { background: #343a52; }
}