/* ============================================================
   Voice Recovery Planner — clinical patient-app design system
   Grounded in real reference patterns (Apple Health, MyChart,
   Philips/Masimo/Tandem device UI): crisp whites + cool blues,
   a single purposeful accent, color as information not ornament,
   generous plain-language typography, no decorative animation.
   ============================================================ */

:root {
  /* grounds: crisp white, cool light-blue tint */
  --bg: #f4f8fc;
  --panel: #ffffff;
  --panel-raised: #eef4fb;

  /* ink */
  --ink: #12202f;
  --ink-muted: #5a6d80;
  --ink-faint: #93a3b3;

  /* structure */
  --border: #d7e2ee;
  --border-strong: #aec2d6;

  /* accent: single clinical blue, used purposefully */
  --accent: #1b63d6;
  --accent-strong: #144fb0;
  --accent-soft: #e4edfb;
  --accent-glow: rgba(27, 99, 214, 0.4);
  --on-accent: #ffffff;

  /* semantic status — reserved for real state, not decoration */
  --ok: #1b63d6;
  --warn: #b5750f;
  --crit: #c62f22;

  --font-display: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --radius: 10px;

  /* heartbeat mark: fixed red, independent of the interactive accent color,
     always on — this app does not follow system dark mode. */
  --heartbeat: #c62f22;
}

* { box-sizing: border-box; }

::selection {
  background: var(--accent-soft);
  color: var(--ink);
}

body {
  margin: 0;
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-strong); }

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---------- header ---------- */

.app-header {
  position: relative;
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
  background: var(--panel);
  overflow: hidden;
}

.app-header::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    100deg,
    transparent 0%,
    var(--accent-glow) 45%,
    transparent 60%
  );
  background-size: 250% 100%;
  animation: shimmer 10s ease-in-out infinite;
  pointer-events: none;
}

#ecg-canvas {
  display: block;
  width: 100%;
  height: 32px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

@media (prefers-reduced-motion: reduce) {
  .app-header::after { animation: none; }
}

@keyframes shimmer {
  0%, 100% { background-position: 120% 0; }
  50% { background-position: -20% 0; }
}

.app-header .wrap {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.brand:hover { color: var(--accent-strong); }

.logo-lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.title {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

/* ---------- reminders bar ---------- */

.reminders-bar {
  background: var(--panel-raised);
  border-bottom: 1px solid var(--border);
}

.reminders-bar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 1.25rem;
  flex-wrap: wrap;
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
}

.status-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-faint);
  flex-shrink: 0;
}

.status-dot.active {
  background: var(--accent);
}

#reminders-status {
  font-size: 0.85rem;
  color: var(--ink-muted);
}

/* ---------- tabs ---------- */

.tabs {
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  position: sticky;
  top: 0;
  z-index: 5;
}

.tabs-scroll {
  display: flex;
  gap: 0.3rem;
  overflow-x: auto;
  padding: 0.6rem 1.25rem;
}

.tab {
  flex: 0 0 auto;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-muted);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s, background 0.15s;
}

.tab:hover {
  color: var(--ink);
  background: var(--panel-raised);
}

.tab.active {
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-weight: 600;
}

/* ---------- content ---------- */

main.wrap {
  padding-top: 1.85rem;
  padding-bottom: 2.5rem;
}

.panel { display: none; }
.panel.active { display: block; }

.panel h2 {
  margin: 0 0 0.3rem;
  font-size: 1.5rem;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

.subtitle {
  color: var(--ink-muted);
  margin: 0 0 1.75rem;
  max-width: 46ch;
}

.field {
  display: block;
  margin-bottom: 1.1rem;
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.field input, .field textarea {
  display: block;
  width: 100%;
  margin-top: 0.4rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
}

.field input[type="date"] {
  font-variant-numeric: tabular-nums;
}

.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.field-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-muted);
  margin: 0 0 0.65rem;
}

/* ---------- checklists ---------- */

.checklist {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-bottom: 1.4rem;
}

.checklist label {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.98rem;
}

input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  min-width: 20px;
  border: 1.5px solid var(--border-strong);
  border-radius: 5px;
  background: var(--panel);
  cursor: pointer;
  position: relative;
  transition: border-color 0.15s, background 0.15s;
}

input[type="checkbox"]:hover { border-color: var(--accent); }

input[type="checkbox"]:checked {
  background: var(--accent);
  border-color: var(--accent);
}

input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--on-accent);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

/* ---------- pills: single-select ---------- */

.pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.4rem;
}

.pill-group button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink-muted);
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-size: 0.88rem;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.pill-group button:hover { border-color: var(--accent); color: var(--ink); }

.pill-group button.selected {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
  font-weight: 600;
}

/* ---------- buttons ---------- */

.save-btn, .add-row-btn {
  background: var(--accent);
  color: var(--on-accent);
  border: none;
  padding: 0.7rem 1.3rem;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: background 0.15s, transform 0.05s;
}

.save-btn:hover, .add-row-btn:hover {
  background: var(--accent-strong);
}

.save-btn:active, .add-row-btn:active { transform: translateY(1px); }

.save-btn.small {
  margin-bottom: 0;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
}

/* ---------- cards ---------- */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  margin-bottom: 1.25rem;
}

.card h3 {
  margin-top: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
}

.week-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0.5rem;
  text-align: center;
}

.week-grid .day {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  color: var(--ink-muted);
}

.week-grid input[type="checkbox"] {
  width: 22px;
  height: 22px;
}

.week-grid input[type="checkbox"]:checked::after {
  left: 7px;
  top: 3px;
}

/* ---------- tables ---------- */

table.log-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

table.log-table th {
  text-align: left;
  background: var(--panel-raised);
  color: var(--ink-muted);
  padding: 0.6rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 600;
}

table.log-table td {
  border: 1px solid var(--border);
  padding: 0.3rem;
}

table.log-table input {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--ink);
  font: inherit;
  padding: 0.4rem;
}

table.log-table input[type="date"],
table.log-table input:not([type]),
table.log-table input[type="text"] {
  font-variant-numeric: tabular-nums;
}

table.log-table input:focus {
  outline: 1px solid var(--accent);
  border-radius: 3px;
}

table.log-table input[type="checkbox"] {
  width: 18px;
  height: 18px;
}

.row-remove {
  background: none;
  border: none;
  color: var(--crit);
  cursor: pointer;
  font-size: 1.05rem;
}

/* ---------- milestones ---------- */

.milestone-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.milestone-item {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
}

.milestone-item:has(input:checked) {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.milestone-item input[type="checkbox"] {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

.milestone-item .label {
  flex: 1;
  font-size: 0.96rem;
}

.milestone-item input[type="date"] {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink-muted);
  border-radius: 6px;
  padding: 0.35rem 0.55rem;
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- history entries ---------- */

.history {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.history-entry {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1.1rem;
  margin-bottom: 0.75rem;
  font-size: 0.92rem;
}

.history-entry .entry-date {
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-strong);
  margin-bottom: 0.3rem;
  font-variant-numeric: tabular-nums;
}

/* ---------- footer ---------- */

.app-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 0 2rem;
}

.app-footer p {
  color: var(--ink-muted);
  font-size: 0.82rem;
  margin: 0;
}

.link-btn {
  background: none;
  border: none;
  color: var(--accent-strong);
  cursor: pointer;
  font-size: 0.82rem;
  padding: 0;
  text-decoration: underline;
}

.link-btn.danger {
  color: var(--crit);
}

/* ---------- tracking: stat tiles ---------- */

.stat-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.stat-tile {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--ink);
}

/* ---------- tracking: chart cards ---------- */

.chart-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  margin-bottom: 1.25rem;
}

.chart-card h3 {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
}

.chart-wrap {
  position: relative;
}

.chart-svg {
  display: block;
  width: 100%;
  height: auto;
}

.chart-grid {
  stroke: var(--border);
  stroke-width: 1;
}

.chart-tick, .chart-axis-label {
  fill: var(--ink-faint);
  font-size: 8px;
  font-family: var(--font-display);
}

.bar-mark { cursor: pointer; }
.bar-mark rect { transition: opacity 0.1s; }
.bar-mark:hover rect, .bar-mark.mark-hover rect, .bar-mark:focus rect {
  opacity: 0.75;
}
.bar-mark:focus { outline: none; }

.donut-svg { width: 160px; max-width: 100%; height: auto; margin: 0 auto; display: block; }

.donut-slice { cursor: pointer; transition: opacity 0.1s; }
.donut-slice:hover, .donut-slice.mark-hover, .donut-slice:focus {
  opacity: 0.8;
  outline: none;
}

.donut-center-value {
  font-size: 20px;
  font-weight: 700;
  fill: var(--ink);
  font-family: var(--font-display);
}

.donut-center-label {
  font-size: 8px;
  fill: var(--ink-faint);
  font-family: var(--font-display);
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem 1.1rem;
  margin-top: 0.9rem;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

.legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.chart-tooltip {
  position: absolute;
  transform: translate(-50%, -100%);
  background: var(--ink);
  color: #ffffff;
  font-size: 0.78rem;
  padding: 0.35rem 0.6rem;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.1s;
  z-index: 10;
}

.chart-tooltip.visible { opacity: 1; }

.chart-empty {
  color: var(--ink-muted);
  font-size: 0.9rem;
  padding: 1.5rem 0;
  text-align: center;
}

.chart-table {
  margin-top: 0.75rem;
}

.chart-table summary {
  font-size: 0.82rem;
  color: var(--accent-strong);
  cursor: pointer;
}

.chart-data-table {
  margin-top: 0.6rem;
  margin-bottom: 0;
}

/* ---------- print (for sharing the Tracking page) ---------- */

@media print {
  .app-header, #ecg-canvas, .reminders-bar, .tabs, .app-footer, .no-print {
    display: none !important;
  }
  main.wrap { padding-top: 0; }
  .panel { display: none !important; }
  #tracking.panel { display: block !important; }
  .chart-card, .stat-tile { break-inside: avoid; }
}