:root {
  color-scheme: dark;
  --surface: #1a1a19;
  --plane: #0d0d0d;
  --ink: #ffffff;
  --ink-secondary: #c3c2b7;
  --ink-muted: #898781;
  --grid: #2c2c2a;
  --baseline: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --accent: #3987e5;
  --select-chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6' fill='none'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23c3c2b7' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

body {
  margin: 0;
  background: var(--plane);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  overflow-x: hidden;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 32px 24px;
}

.page-header {
  display: flex;
  flex-direction: column;
}

.page-title {
  font-size: 24px;
  font-weight: 600;
  margin: 0;
}

.page-subtitle {
  font-size: 14px;
  color: var(--ink-secondary);
  margin: 4px 0 0;
}

.data-cap-banner {
  background: rgba(217, 164, 65, 0.12);
  border: 1px solid rgba(217, 164, 65, 0.35);
  color: #d9a441;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 500;
  margin: 16px 0 0;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-end;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 20px;
  margin: 24px 0;
}

.control {
  display: inline-flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  max-width: 100%;
}

.control-label {
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
  font-weight: 500;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

#chart {
  height: clamp(360px, 55vh, 620px);
}

select {
  appearance: none;
  -webkit-appearance: none;
  background-image: var(--select-chevron);
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding: 8px 34px 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background-color: var(--surface);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
  max-width: 100%;
}

select:hover {
  border-color: var(--ink-muted);
}

select:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

option {
  background: var(--surface);
  color: var(--ink);
}

.range { position: relative; width: 240px; max-width: 100%; height: 32px; display: block; }
.range-track { position: absolute; top: 50%; transform: translateY(-50%); left: 8px; right: 8px; height: 4px; border-radius: 999px; background: var(--grid); }
.range-fill { position: absolute; top: 0; bottom: 0; background: var(--accent); border-radius: 999px; }
.range input[type="range"] {
  position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 0;
  appearance: none; -webkit-appearance: none; -moz-appearance: none; background: transparent; pointer-events: none;
}
#dateEnd { z-index: 4; }
#dateStart { z-index: 3; }

.range input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--baseline);
  cursor: pointer; pointer-events: auto;
}
.range input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--baseline);
  cursor: pointer; pointer-events: auto;
}

.range input[type="range"]:hover::-webkit-slider-thumb {
  border-color: var(--ink-muted);
}
.range input[type="range"]:hover::-moz-range-thumb {
  border-color: var(--ink-muted);
}
.range input[type="range"]:focus-visible::-webkit-slider-thumb {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.range input[type="range"]:focus-visible::-moz-range-thumb {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.date-range-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.date-inputs { display: flex; align-items: center; gap: 6px; }
.date-sep { color: var(--ink-muted); }

.summary { display: flex; flex-direction: column; gap: 24px; padding: 8px 0; }
.summary[hidden] { display: none; }
.stat-tiles { display: flex; flex-wrap: wrap; gap: 16px; }
.stat-tile {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--plane); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 20px; min-width: 160px;
}
.stat-label { font-size: 12px; color: var(--ink-muted); letter-spacing: 0.02em; font-weight: 500; }
.stat-value { font-size: 28px; font-weight: 600; font-variant-numeric: tabular-nums; }
.summary-slider { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.summary-sentence { margin: 0; font-size: 15px; color: var(--ink-secondary); }
#regularsSentence { margin: 0 0 16px; }
.summary-sentence input[type="number"] {
  width: 4ch;
  padding: 2px 6px;
  vertical-align: middle;
}
.summary-sentence select {
  padding: 2px 22px 2px 8px;
  background-position: right 6px center;
  vertical-align: middle;
}
.summary-slider-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; }
.range-with-label { display: inline-flex; flex-direction: column; gap: 6px; min-width: 0; max-width: 100%; }
.summary-slider-row .range { flex: 1 1 auto; }

input[type="date"], input[type="number"] {
  background-color: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  font: inherit;
  font-variant-numeric: tabular-nums;
}

input[type="date"]:hover, input[type="number"]:hover {
  border-color: var(--ink-muted);
}

input[type="date"]:focus-visible, input[type="number"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

@media (pointer: coarse) {
  #chart { touch-action: pan-y; }
}

@media (max-width: 640px) {
  .page { padding: 20px 12px; }
  .page-title { font-size: 20px; }
  .toolbar { gap: 12px; padding: 12px; margin: 16px 0; }
  .card { padding: 12px; }
  #chart { height: clamp(260px, 52vh, 420px); }
  #dateRangeGroup { width: 100%; }
  .date-range-row { flex-direction: column; align-items: stretch; gap: 10px; }
  .date-inputs { width: 100%; }
  .date-inputs input[type="date"] { flex: 1 1 0; min-width: 0; }
  .range { width: 100%; }
  .stat-tile { flex: 1 1 0; min-width: 0; padding: 12px 14px; }
  .summary-slider { align-self: stretch; }
  .summary-slider-row { flex-direction: column; align-items: stretch; width: 100%; }
  .summary-slider-row .range { width: 100%; }
}