:root {
  --bg: #f4faf9;
  --surface: #ffffff;
  --surface-alt: #eef6f5;
  --text: #0b2624;
  --text-muted: #5b7a77;
  --border: #dbe9e7;
  --primary: #0f766e;
  --primary-dark: #0b5a54;
  --primary-contrast: #ffffff;
  --accent: #f59e0b;
  --danger: #dc2626;
  --success: #16a34a;
  --shadow: 0 1px 2px rgba(11, 38, 36, 0.06), 0 4px 12px rgba(11, 38, 36, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #06201d;
    --surface: #0d2e2a;
    --surface-alt: #113733;
    --text: #eaf6f4;
    --text-muted: #8fb0ac;
    --border: #17423c;
    --primary: #2dd4bf;
    --primary-dark: #14b8a6;
    --primary-contrast: #052e2a;
    --accent: #fbbf24;
    --danger: #f87171;
    --success: #4ade80;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

/* The [hidden] attribute must always win. A class that sets `display`
   (e.g. .install-banner { display: flex }) has equal specificity to the
   UA [hidden] rule and would otherwise override it, leaving the element
   permanently visible. */
[hidden] {
  display: none !important;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
}

/* ---------- Header ---------- */
.app-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: max(12px, env(safe-area-inset-top)) 16px 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 640px;
  margin: 0 auto;
}

.brand-icon {
  border-radius: 9px;
  flex-shrink: 0;
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: 0.2px;
}

.tagline {
  margin: 0;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------- Layout ---------- */
main#app {
  max-width: 640px;
  margin: 0 auto;
  padding: 16px 16px 32px;
}

.view[hidden] {
  display: none;
}

.today-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.today-date {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.progress-pill {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
}

.progress-pill.all-done {
  background: var(--success);
  border-color: var(--success);
  color: #06301a;
}

/* ---------- Groups (Today view) ---------- */
.groups-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.group-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.group-card.complete {
  border-color: var(--success);
}

.group-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.group-check {
  flex-shrink: 0;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  background: var(--surface);
}

.group-card.complete .group-check {
  background: var(--success);
  border-color: var(--success);
  color: #ffffff;
}

.group-info {
  flex: 1;
  min-width: 0;
}

.group-name {
  font-weight: 600;
  font-size: 1rem;
}

.group-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.group-time {
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.med-list {
  list-style: none;
  margin: 0;
  padding: 0 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.med-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px 8px 42px;
  border-top: 1px solid var(--border);
}

.med-row label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  flex: 1;
  min-width: 0;
}

.med-row input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
  flex-shrink: 0;
}

.med-name {
  font-size: 0.92rem;
}

.med-dose {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.med-row.taken .med-name {
  text-decoration: line-through;
  color: var(--text-muted);
}

.empty-state {
  text-align: center;
  padding: 48px 16px;
  color: var(--text-muted);
}

.empty-state p {
  margin-bottom: 16px;
}

/* ---------- Manage view ---------- */
.manage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.manage-header h2 {
  margin: 0;
  font-size: 1.1rem;
}

.manage-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.manage-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}

.manage-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.manage-card-title {
  flex: 1;
  min-width: 0;
}

.manage-card-title .group-name {
  display: block;
}

.manage-card-title .group-time {
  display: block;
}

.icon-btn {
  border: none;
  background: var(--surface-alt);
  color: var(--text-muted);
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
}

.icon-btn:hover {
  color: var(--text);
}

.icon-btn.danger:hover {
  color: var(--danger);
}

.manage-med-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.manage-med-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--surface-alt);
  border-radius: var(--radius-sm);
}

.manage-med-row .med-info {
  flex: 1;
  min-width: 0;
}

.manage-med-row .med-name {
  display: block;
}

.manage-med-row .med-dose {
  display: block;
}

.add-med-btn {
  margin-top: 10px;
  width: 100%;
}

.no-meds-hint {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 10px 0 0;
}

/* ---------- Buttons ---------- */
.btn {
  font: inherit;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  padding: 10px 16px;
  cursor: pointer;
  transition: transform 0.05s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn.primary {
  background: var(--primary);
  color: var(--primary-contrast);
}

.btn.ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn.small {
  padding: 7px 12px;
  font-size: 0.85rem;
}

/* ---------- Tab bar ---------- */
.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 20;
}

.tab-btn {
  flex: 1;
  border: none;
  background: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 10px 0 8px;
  color: var(--text-muted);
  font: inherit;
  font-size: 0.72rem;
  cursor: pointer;
}

.tab-btn.active {
  color: var(--primary);
}

/* ---------- Install banner ---------- */
.install-banner {
  position: fixed;
  left: 12px;
  right: 12px;
  bottom: calc(72px + env(safe-area-inset-bottom));
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 500px;
  margin: 0 auto;
  z-index: 15;
  font-size: 0.85rem;
}

.install-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

/* ---------- Dialogs ---------- */
.dialog {
  border: none;
  border-radius: var(--radius);
  padding: 20px;
  width: min(420px, calc(100vw - 32px));
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

.dialog::backdrop {
  background: rgba(0, 0, 0, 0.45);
}

.dialog h3 {
  margin: 0 0 16px;
}

.dialog form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.dialog label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.dialog input {
  font: inherit;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 4px;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(84px + env(safe-area-inset-bottom));
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.85rem;
  box-shadow: var(--shadow);
  z-index: 30;
  max-width: calc(100vw - 32px);
  text-align: center;
  transition: bottom 0.15s ease;
}