/* ---------- Fonts (self-hosted, latin subsets) ---------- */
@font-face {
  font-family: "Fraunces"; font-weight: 600; font-display: swap;
  src: url("fonts/Fraunces-600.woff2") format("woff2");
}
@font-face {
  font-family: "Inter"; font-weight: 400; font-display: swap;
  src: url("fonts/Inter-400.woff2") format("woff2");
}
@font-face {
  font-family: "Inter"; font-weight: 600; font-display: swap;
  src: url("fonts/Inter-600.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono"; font-weight: 400; font-display: swap;
  src: url("fonts/IBMPlexMono-400.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono"; font-weight: 500; font-display: swap;
  src: url("fonts/IBMPlexMono-500.woff2") format("woff2");
}

/* ---------- Palette & base ---------- */
:root {
  --paper: #F6F1E7;
  --panel: #FBF8F1;
  --ink: #1B1815;
  --muted: #6B6257;
  --hairline: #DDD4C4;
  --oxblood: #5E1A1E;
  --green: #1F3B2C;
  --serif: "Fraunces", Georgia, serif;
  --sans: "Inter", -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  max-width: 1080px;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.55 var(--sans);
}

h1 { font: 600 2rem var(--serif); margin: 0 0 0.4rem; }
h2 { font: 600 1.05rem var(--serif); margin: 0 0 0.9rem; }
h3 { font: 600 0.95rem var(--serif); margin: 0 0 0.3rem; }
code, pre, .mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

button, select {
  font: 600 0.9rem var(--sans);
  color: var(--ink);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  background: var(--panel);
  padding: 0.55rem 1rem;
  cursor: pointer;
}
button.primary {
  background: var(--oxblood); color: var(--paper); border-color: var(--oxblood);
}
button.primary:disabled { opacity: 0.4; cursor: not-allowed; }
button.linklike {
  background: none; border: none; padding: 0;
  color: var(--oxblood); text-decoration: underline; font-weight: 600;
}
label { font-size: 0.85rem; color: var(--muted); font-weight: 600; }
label select { margin-left: 0.4rem; }

.error { color: var(--oxblood); font-weight: 600; }
.note {
  border-left: 3px solid var(--oxblood);
  padding: 0.4rem 0.8rem;
  margin: 0 0 1rem;
  background: var(--panel);
  font-size: 0.88rem;
}

/* ---------- Upload screen ---------- */
.upload-header { text-align: center; margin-bottom: 2rem; }
.tagline { max-width: 560px; margin: 0 auto; color: var(--muted); }

.upload-panel { max-width: 640px; margin: 0 auto 3rem; }
#dropzone {
  border: 2px dashed var(--hairline);
  border-radius: 10px;
  background: var(--panel);
  padding: 3rem 1rem;
  text-align: center;
  cursor: pointer;
}
#dropzone.dragover, #dropzone:hover { border-color: var(--oxblood); }
.drop-title { font: 600 1.1rem var(--serif); margin: 0 0 0.3rem; }
.drop-sub { color: var(--muted); margin: 0; }
#file-status { text-align: center; }

.upload-controls {
  display: flex; gap: 0.8rem; align-items: center; justify-content: center;
  flex-wrap: wrap; margin-top: 1.2rem;
}

.help { max-width: 640px; margin: 0 auto 3rem; }
.help pre {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 0.8rem 1rem;
  font-size: 0.82rem;
  overflow-x: auto;
}

.features {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem;
  max-width: 900px; margin: 0 auto;
}
.feature {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 1rem;
}
.feature p { margin: 0; font-size: 0.82rem; color: var(--muted); }

/* ---------- Tearsheet ---------- */
.ts-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 1rem; flex-wrap: wrap; margin-bottom: 1.5rem;
}
.subtitle { font-family: var(--mono); font-size: 0.9rem; margin: 0 0 0.3rem; }
.provenance { font-size: 0.78rem; color: var(--muted); margin: 0; max-width: 560px; }
.ts-controls { display: flex; gap: 0.7rem; align-items: center; flex-wrap: wrap; }

.cards {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.9rem;
  margin-bottom: 1.4rem;
}
.card {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 0.85rem 1rem;
}
.card-label {
  font-size: 0.72rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--muted);
}
.card-value {
  font: 500 1.5rem var(--mono);
  font-variant-numeric: tabular-nums;
  margin: 0.15rem 0;
}
.card-value.pos { color: var(--green); }
.card-value.neg { color: var(--oxblood); }
.card-desc { font-size: 0.75rem; color: var(--muted); }

.panel {
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 1.1rem 1.2rem;
  margin-bottom: 1.4rem;
}
.panel-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem;
}
.panel-row .panel { margin-bottom: 1.4rem; }
.benchmark-cards { grid-template-columns: 1fr 1fr; margin-bottom: 0; }
.benchmark-cards .card { background: var(--paper); }

.r2-badge {
  font: 500 0.8rem var(--mono);
  color: var(--muted);
  margin-left: 0.5rem;
}
.footnote { font-size: 0.75rem; color: var(--muted); margin: 0.6rem 0 0; }
.ts-footer { font-size: 0.78rem; color: var(--muted); text-align: center; margin-top: 1rem; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th {
  text-align: right; font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.05em; color: var(--muted);
  border-bottom: 1px solid var(--hairline);
  padding: 0.35rem 0.6rem;
}
th:first-child, td:first-child { text-align: left; }
td { text-align: right; padding: 0.35rem 0.6rem; border-bottom: 1px solid var(--hairline); }
td.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }
tr.hl { background: rgba(94, 26, 30, 0.07); }
tr.subhead td {
  font: 600 0.8rem var(--serif);
  padding-top: 0.9rem;
  border-bottom: 1px solid var(--hairline);
}

/* ---------- Charts ---------- */
.chart-box { position: relative; }
.chart { width: 100%; height: auto; display: block; }
.chart .grid { stroke: var(--hairline); stroke-width: 1; }
.chart .axis { stroke: var(--muted); stroke-width: 1; }
.chart .refline { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 4 4; opacity: 0.5; }
.chart .crosshair { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.chart .tick { font: 10px var(--mono); fill: var(--muted); }
.chart .bar-value { font: 11px var(--mono); fill: var(--ink); }

.tooltip {
  position: absolute;
  background: var(--panel);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(27, 24, 21, 0.12);
  padding: 0.45rem 0.65rem;
  font: 11px/1.6 var(--mono);
  pointer-events: none;
  white-space: nowrap;
  z-index: 10;
}
.tip-date { font-weight: 500; margin-bottom: 2px; }

.legend {
  display: flex; gap: 1.1rem; flex-wrap: wrap;
  margin-top: 0.5rem;
  font-size: 0.78rem; color: var(--muted);
}
.legend-item { display: inline-flex; align-items: center; gap: 0.35rem; }
.swatch {
  display: inline-block; width: 11px; height: 11px; border-radius: 3px;
}
.swatch-dash {
  background-image: repeating-linear-gradient(
    45deg, transparent 0 2px, rgba(246, 241, 231, 0.55) 2px 4px);
}
.tooltip .swatch { width: 8px; height: 8px; margin-right: 4px; }

/* ---------- Responsive (degrade gracefully, not mobile-optimized) ---------- */
@media (max-width: 900px) {
  .cards, .features { grid-template-columns: repeat(2, 1fr); }
  .panel-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .cards, .features { grid-template-columns: 1fr; }
}

/* ---------- Print ---------- */
@media print {
  body { background: white !important; padding: 0; max-width: none; font-size: 12px; }
  .ts-controls, #upload-screen { display: none !important; }
  .panel, .card, .panel-row { break-inside: avoid; }
  .panel, .card {
    border-color: #ccc;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .chart-box, .card-value.pos, .card-value.neg, tr.hl {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .tooltip { display: none; }
}