:root {
  --bg: #1a1a2e;
  --card: #1a1a2e;
  --surface: #16213e;
  --surface-hover: #1f3460;
  --accent: #e94560;
  --accent-pressed: #a82e43;
  --text: #eaeaea;
  --text-dim: #aaaacc;
  --text-muted: #8888aa;
  --text-faint: #666680;
  --text-trace: #444460;
  --good: #4ade80;
  --warn: #fbbf24;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  min-height: 100dvh;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: max(env(safe-area-inset-top, 0), 16px) 16px max(env(safe-area-inset-bottom, 0), 16px);
}

.card {
  width: min(440px, 100%);
  background: var(--card);
  border-radius: 18px;
  padding: 24px 28px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
}

header { text-align: center; }

h1 {
  margin: 0;
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.2px;
}

.subtitle {
  margin: 2px 0 0;
  color: var(--text-muted);
  font-size: 13px;
}

.timer {
  font-family: "SF Mono", "Menlo", "Courier New", monospace;
  font-size: 60px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
  margin: 4px 0 0;
  font-variant-numeric: tabular-nums;
}
.phase {
  margin: 0;
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  min-height: 14px;
}

.row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-dim);
  flex-wrap: wrap;
}

input[type="number"] {
  width: 70px;
  background: var(--surface);
  color: var(--text);
  border: none;
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
  font-family: "SF Mono", "Menlo", monospace;
  font-size: 16px;
  text-align: center;
  outline: none;
  appearance: textfield;
  -moz-appearance: textfield;
}
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"]:focus { box-shadow: 0 0 0 2px var(--accent-pressed); }
input[type="number"]:disabled { opacity: 0.5; }

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}
.toggle input { accent-color: var(--accent); }
.toggle.inline { margin-left: 8px; }

select {
  background: var(--surface);
  color: var(--text);
  border: none;
  border-radius: 6px;
  padding: 8px 10px;
  font: inherit;
  font-size: 13px;
  outline: none;
  cursor: pointer;
  width: 100%;
}
select:focus { box-shadow: 0 0 0 2px var(--accent-pressed); }

.presets { display: flex; gap: 8px; justify-content: center; }
.preset {
  flex: 1;
  max-width: 70px;
  background: var(--surface);
  color: var(--text-dim);
  border: none;
  border-radius: 8px;
  padding: 8px 0;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  transition: background 120ms, color 120ms;
}
.preset:hover { background: var(--surface-hover); color: var(--text); }
.preset.active { background: var(--surface-hover); color: var(--text); box-shadow: inset 0 0 0 1px var(--accent); }

.control {
  display: grid;
  grid-template-columns: 80px 1fr;
  align-items: center;
  gap: 10px;
  text-align: left;
}
.control-label {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.rate-group { display: flex; gap: 6px; }
.rate { flex: 1; position: relative; cursor: pointer; }
.rate input { position: absolute; opacity: 0; pointer-events: none; }
.rate span {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--surface);
  color: var(--text-dim);
  border-radius: 8px;
  padding: 6px 0;
  font-size: 12px;
  line-height: 1.2;
  transition: background 120ms, color 120ms;
}
.rate span strong { font-weight: 600; font-size: 12px; }
.rate span em { font-style: normal; font-size: 10px; color: var(--text-faint); }
.rate input:checked + span {
  background: var(--surface-hover);
  color: var(--text);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.rate input:checked + span em { color: var(--text-dim); }
.rate.recommended span::after {
  content: "★";
  position: absolute;
  top: 4px;
  right: 6px;
  font-size: 9px;
  color: var(--accent);
  opacity: 0.85;
}

input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  margin: 0;
}
input[type="range"]::-webkit-slider-runnable-track { height: 4px; background: var(--surface); border-radius: 2px; }
input[type="range"]::-moz-range-track { height: 4px; background: var(--surface); border-radius: 2px; }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  background: var(--accent);
  border-radius: 50%;
  margin-top: -6px;
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  background: var(--accent);
  border: none; border-radius: 50%;
  cursor: pointer;
}

.range-labels {
  grid-column: 2;
  display: flex; justify-content: space-between;
  font-size: 10px; color: var(--text-faint);
  margin-top: -4px;
}

.science {
  background: rgba(233, 69, 96, 0.06);
  border-left: 2px solid var(--accent);
  padding: 8px 12px;
  border-radius: 4px;
  text-align: left;
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.5;
}
.science summary {
  cursor: pointer;
  color: var(--text-dim);
  font-size: 12px;
  font-weight: 600;
  list-style: none;
  outline: none;
}
.science summary::-webkit-details-marker { display: none; }
.science summary::before { content: "▸ "; color: var(--accent); }
.science[open] summary::before { content: "▾ "; }
.science p { margin: 8px 0 0; }
.science a { color: var(--accent); text-decoration: none; }
.science a:hover { text-decoration: underline; }
.science strong { color: var(--text-dim); font-weight: 600; }

.primary {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 14px 20px;
  font: inherit;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 4px;
  transition: background 120ms, transform 80ms, opacity 120ms;
}
.primary:hover { background: var(--accent-pressed); }
.primary:active { transform: scale(0.98); }
.primary.running { background: var(--text-trace); }
.primary.running:hover { background: #555575; }
.primary:disabled { opacity: 0.5; cursor: not-allowed; }

.secondary {
  background: var(--surface);
  color: var(--text-dim);
  border: none;
  border-radius: 10px;
  padding: 10px 16px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
  margin-top: 8px;
}
.secondary:hover { background: var(--surface-hover); color: var(--text); }
.secondary.danger { color: var(--accent); }

.status {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--text-faint);
  min-height: 1.2em;
}
.status.error { color: var(--accent); }

.actions {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-top: 4px;
}
.action-btn {
  flex: 1;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--surface);
  border-radius: 8px;
  padding: 8px 4px;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
  transition: background 120ms, color 120ms, border-color 120ms;
}
.action-btn:hover { background: var(--surface); color: var(--text-dim); border-color: var(--surface-hover); }
.action-btn .ico { color: var(--accent); margin-right: 2px; }

footer {
  margin-top: 4px;
  font-size: 10px;
  color: var(--text-trace);
}

/* ===== Modals ===== */

dialog.modal {
  border: none;
  background: transparent;
  padding: 0;
  max-width: 100%;
  max-height: 100%;
  margin: auto;
}
dialog.modal::backdrop { background: rgba(0, 0, 0, 0.65); backdrop-filter: blur(4px); }

.modal-card {
  width: min(480px, calc(100vw - 24px));
  max-height: calc(100dvh - 24px);
  overflow-y: auto;
  background: var(--card);
  border-radius: 18px;
  padding: 22px 26px 20px;
  color: var(--text);
  text-align: left;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.modal-header h2 {
  margin: 0;
  font-size: 18px;
  color: var(--accent);
}
.close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  padding: 0 8px;
}
.close:hover { color: var(--text); }

.modal-body { display: flex; flex-direction: column; gap: 12px; }
.modal-body p { margin: 0; line-height: 1.5; font-size: 13px; color: var(--text-dim); }
.modal-body p.note { color: var(--text-muted); font-size: 12px; font-style: italic; }
.modal-body h3 { margin: 8px 0 0; font-size: 14px; color: var(--text); font-weight: 600; }

/* SART test */
.sart-stimulus {
  font-family: "SF Mono", monospace;
  font-size: 120px;
  font-weight: 700;
  text-align: center;
  height: 140px;
  line-height: 140px;
  background: var(--surface);
  border-radius: 12px;
  cursor: pointer;
  user-select: none;
  color: var(--text-faint);
  transition: color 80ms, background 80ms;
}
.sart-stimulus.on { color: var(--text); background: var(--surface-hover); }
.sart-progress {
  height: 4px;
  background: var(--surface);
  border-radius: 2px;
  overflow: hidden;
}
.sart-progress .bar {
  height: 100%;
  width: 0%;
  background: var(--accent);
  transition: width 100ms linear;
}

.big-rate {
  color: var(--accent);
  font-weight: 700;
  font-size: 22px;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.result-table th, .result-table td {
  padding: 6px 8px;
  text-align: left;
  border-bottom: 1px solid var(--surface);
}
.result-table th { color: var(--text-muted); font-weight: 500; font-size: 11px; text-transform: uppercase; }
.result-table tr.best td { color: var(--accent); font-weight: 600; }

/* ASRS */
.asrs-q {
  background: var(--surface);
  border-radius: 10px;
  padding: 12px;
  margin: 8px 0;
}
.asrs-q .q-text {
  font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 8px;
  line-height: 1.4;
}
.asrs-q .opts {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 4px;
}
.asrs-q .opts label {
  font-size: 10px;
  text-align: center;
  padding: 6px 2px;
  border-radius: 6px;
  background: var(--bg);
  color: var(--text-faint);
  cursor: pointer;
  user-select: none;
}
.asrs-q .opts input { display: none; }
.asrs-q .opts input:checked + span { background: var(--accent); color: white; padding: 6px 2px; border-radius: 6px; display: block; }

.asrs-result {
  background: var(--surface);
  border-radius: 10px;
  padding: 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-dim);
}
.asrs-result.positive { border-left: 3px solid var(--accent); }
.asrs-result.negative { border-left: 3px solid var(--good); }
.asrs-result strong { color: var(--text); }

/* History */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin: 4px 0 12px;
}
.stat {
  background: var(--surface);
  border-radius: 10px;
  padding: 10px 4px;
  text-align: center;
}
.stat-num {
  font-family: "SF Mono", monospace;
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}
.stat-label {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.heatmap {
  display: grid;
  grid-template-columns: repeat(15, 1fr);
  gap: 3px;
  margin: 8px 0;
}
.heatmap .day {
  aspect-ratio: 1;
  background: var(--surface);
  border-radius: 3px;
  position: relative;
}
.heatmap .day[data-level="1"] { background: rgba(233, 69, 96, 0.25); }
.heatmap .day[data-level="2"] { background: rgba(233, 69, 96, 0.5); }
.heatmap .day[data-level="3"] { background: rgba(233, 69, 96, 0.75); }
.heatmap .day[data-level="4"] { background: var(--accent); }