/* Tokens. Chart palette is the validated 5-slot categorical set (light + dark steps). */
:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;
  --good: #006300;
  --good-mark: #0ca30c;
  --critical: #d03b3b;
  --warn-bg: #fdf3dc;
  --err-bg: #fbe9e9;
  --s1: #2a78d6; /* cash */
  --s2: #eb6834; /* taxable */
  --s3: #1baf7a; /* traditional */
  --s4: #eda100; /* roth */
  --s5: #e87ba4; /* hsa */
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --accent: #3987e5;
    --good: #0ca30c;
    --warn-bg: #3a2f14;
    --err-bg: #3d1d1d;
    --s1: #3987e5;
    --s2: #d95926;
    --s3: #199e70;
    --s4: #c98500;
    --s5: #d55181;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}
h1 { font-size: 1.15rem; margin: 0; }
h2 { font-size: 1rem; margin: 0 0 0.75rem; }
h3 { font-size: 0.9rem; margin: 1.25rem 0 0.4rem; color: var(--ink-2); }
main { max-width: 1200px; margin: 0 auto; padding: 0 16px 48px; }

/* Header */
.top {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
button, .file-btn {
  font: inherit; padding: 6px 12px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--border); background: var(--page); color: var(--ink);
}
button:hover, .file-btn:hover { border-color: var(--axis); }
button.primary { background: var(--accent); color: #fff; border-color: transparent; }
.file-btn input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-btn:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; padding: 2px; margin: 0; }
.seg label { padding: 4px 10px; border-radius: 6px; cursor: pointer; color: var(--ink-2); }
.seg input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.seg label:has(input:checked) { background: var(--page); color: var(--ink); font-weight: 600; box-shadow: 0 0 0 1px var(--border); }
.seg label:has(input:focus-visible) { outline: 2px solid var(--accent); }

/* Panels & messages */
.panel {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 16px; margin-top: 16px;
}
.source { color: var(--muted); font-size: 0.85rem; margin: 12px 0 0; }
.empty { color: var(--ink-2); margin-top: 32px; }
.errors { background: var(--err-bg); border-color: var(--critical); }
.warnings { background: var(--warn-bg); }
.errors ul, .warnings ul { margin: 0; padding-left: 1.2rem; }
.errors li, .warnings li { margin: 4px 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.muted { color: var(--muted); }
.note { margin: 12px 0 0; color: var(--ink-2); font-size: 0.85rem; }
#assumptions a { color: var(--accent); }

/* Summary */
.summary { margin-top: 16px; }
.headline {
  display: flex; gap: 12px; align-items: flex-start; padding: 16px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
}
.headline p { margin: 0; }
.headline-main { font-size: 1.6rem; font-weight: 600; line-height: 1.2; }
.headline-sub { color: var(--ink-2); margin-top: 4px !important; }
.status-icon {
  flex: none; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center;
  color: #fff; font-weight: 700; margin-top: 2px;
}
.ok .status-icon { background: var(--good-mark); }
.bad .status-icon { background: var(--critical); }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; margin-top: 8px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 12px; min-width: 0; }
.tile-label { color: var(--ink-2); font-size: 0.85rem; }
.tile-value { font-size: 1.25rem; font-weight: 600; margin-top: 2px; }
.tile-sub { color: var(--muted); font-size: 0.8rem; }

/* Chart */
.chart { position: relative; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; margin-bottom: 8px; font-size: 0.85rem; color: var(--ink-2); }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.swatch { width: 12px; height: 12px; border-radius: 3px; }
.chart-frame { position: relative; }
.chart svg { display: block; max-width: 100%; height: auto; overflow: visible; }
.fill-cash, .key-cash { fill: var(--s1); background: var(--s1); }
.fill-taxable, .key-taxable { fill: var(--s2); background: var(--s2); }
.fill-traditional, .key-traditional { fill: var(--s3); background: var(--s3); }
.fill-roth, .key-roth { fill: var(--s4); background: var(--s4); }
.fill-hsa, .key-hsa { fill: var(--s5); background: var(--s5); }
.area { opacity: 0.9; }
.gap { fill: none; stroke: var(--surface); stroke-width: 2; stroke-linejoin: round; }
.gridline { stroke: var(--grid); stroke-width: 1; }
.baseline { stroke: var(--axis); stroke-width: 1; }
.tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.marker { stroke: var(--ink-2); stroke-width: 1; }
.marker.critical { stroke: var(--critical); stroke-width: 2; }
.marker-label { fill: var(--ink-2); font-size: 11px; }
.crosshair { stroke: var(--ink); stroke-width: 1; pointer-events: none; }
.hit { fill: transparent; cursor: crosshair; outline: none; }
.hit:focus-visible { stroke: var(--accent); stroke-width: 2; }
.tooltip {
  position: absolute; top: 0; left: 0; pointer-events: none; min-width: 190px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12); padding: 8px 10px; font-size: 0.85rem;
}
.tip-head { font-weight: 600; margin-bottom: 4px; display: flex; justify-content: space-between; gap: 12px; }
.tip-ages { color: var(--muted); font-weight: 400; }
.tip-row { display: grid; grid-template-columns: 14px auto 1fr; align-items: center; gap: 6px; font-variant-numeric: tabular-nums; }
.tip-key { width: 12px; height: 2px; border-radius: 1px; }
.tip-name { color: var(--ink-2); }
.tip-total { border-top: 1px solid var(--grid); margin-top: 4px; padding-top: 4px; }

/* Table: scrolls inside its own box on narrow screens; year column sticks. */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-wrap:focus-visible { outline: 2px solid var(--accent); }
table { border-collapse: separate; border-spacing: 0; width: 100%; font-size: 0.85rem; }
.caption { color: var(--muted); font-size: 0.85rem; margin: -4px 0 8px; }
th, td { padding: 6px 10px; border-bottom: 1px solid var(--grid); white-space: nowrap; text-align: left; }
thead th { color: var(--ink-2); font-weight: 600; position: sticky; top: 0; background: var(--surface); vertical-align: bottom; white-space: normal; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
td.neg { color: var(--ink-2); }
.sticky { position: sticky; left: 0; background: var(--surface); z-index: 1; }
thead .sticky { z-index: 2; }
.ages { color: var(--ink-2); font-variant-numeric: tabular-nums; }
.notes { white-space: normal; min-width: 220px; color: var(--ink-2); }
tr.shortfall th, tr.shortfall td { background: var(--err-bg); }
.badge { display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 0 6px; border-radius: 4px; margin-right: 6px; }
.badge.critical { background: var(--critical); color: #fff; }
td[title] { cursor: help; }

/* Assumptions */
details > summary { cursor: pointer; list-style: none; }
details > summary::-webkit-details-marker { display: none; }
details > summary h2 { display: inline; }
details > summary::before { content: "▸ "; color: var(--muted); }
details[open] > summary::before { content: "▾ "; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0; }
.kv dt { color: var(--ink-2); }
.kv dd { margin: 0; }
#assumptions ul { margin: 0; padding-left: 1.2rem; }
#assumptions li { margin: 2px 0; }
@media (max-width: 520px) {
  .kv { grid-template-columns: 1fr; }
  .kv dd { margin-bottom: 6px; }
  .headline-main { font-size: 1.3rem; }
}

/* Connect form */
.connect > summary h2 { display: inline; }
.connect form { margin-top: 12px; }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
.fields label, .check { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--ink-2); }
.fields .wide { grid-column: 1 / -1; }
.check { flex-direction: row; align-items: center; gap: 8px; margin-top: 10px; }
input:not([type]), input[type="password"] {
  font: inherit; font-size: 16px; /* 16px stops iOS zoom-on-focus */
  padding: 7px 10px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--page); color: var(--ink); min-width: 0;
}
input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 12px; }
.hint { color: var(--muted); font-size: 0.8rem; margin: 10px 0 0; }
.hint a, .source a, .source button { color: var(--accent); }
.source button { background: none; border: none; padding: 0 0 0 6px; font-size: inherit; text-decoration: underline; }