:root {
  --bg: #f4f6fa;
  --surface: #ffffff;
  --surface-2: #eef1f6;
  --text: #162033;
  --muted: #5f6b84;
  --border: #e1e6ee;
  --accent: #2563eb;
  --accent-soft: #dbe7fe;
  --on-accent: #ffffff;
  --ok: #15803d;
  --ok-soft: #dcfce7;
  --warn: #b45309;
  --warn-soft: #fef3c7;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --h-none: #eef1f6;
  --h0: #fecaca;
  --h1: #fde68a;
  --h2: #bbf7d0;
  --h3: #4ade80;
  --h4: #16a34a;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 2px 8px rgba(16, 24, 40, .06);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e131c;
    --surface: #161d29;
    --surface-2: #1f2836;
    --text: #e7ecf4;
    --muted: #97a3b8;
    --border: #273244;
    --accent: #6b9cff;
    --accent-soft: #1d2d4d;
    --on-accent: #0b1220;
    --ok: #4ade80;
    --ok-soft: #12321f;
    --warn: #fbbf24;
    --warn-soft: #3a2c0c;
    --danger: #f87171;
    --danger-soft: #3b1717;
    --h-none: #1f2836;
    --h0: #5b1f1f;
    --h1: #6b4f12;
    --h2: #1f5a35;
    --h3: #22a355;
    --h4: #4ade80;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.container { max-width: 680px; margin: 0 auto; padding: 16px 16px 64px; }

/* ---------- Header & tabs ---------- */
.app-header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.app-header-inner {
  max-width: 680px; margin: 0 auto; padding: 12px 16px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.brand { margin: 0; font-size: 1.1rem; display: flex; align-items: center; gap: 8px; color: var(--accent); }
.brand { letter-spacing: -.01em; }
.tabs { display: flex; gap: 4px; background: var(--surface-2); padding: 4px; border-radius: 999px; }
.tabs button {
  border: 0; background: transparent; padding: 6px 14px; border-radius: 999px;
  font-size: .9rem; font-weight: 600; color: var(--muted);
}
.tabs button[aria-current="page"] { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }

/* ---------- Generic ---------- */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px;
}
.muted { color: var(--muted); }
.small { font-size: .875rem; }
h2 { font-size: 1.05rem; margin: 0; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: 1px solid transparent; border-radius: 10px; padding: 8px 14px;
  font-weight: 600; font-size: .925rem; background: var(--surface-2);
}
.btn.primary { background: var(--accent); color: var(--on-accent); }
.btn.primary:hover { filter: brightness(1.06); }
.btn.ghost { background: transparent; border-color: var(--border); }
.btn.ghost:hover { background: var(--surface-2); }
.btn.danger-ghost { background: transparent; color: var(--danger); border-color: var(--border); }
.btn.danger-ghost:hover { background: var(--danger-soft); }

.text-btn {
  border: 0; background: none; padding: 4px 6px; border-radius: 8px;
  color: var(--accent); font-weight: 600; font-size: .875rem;
}
.text-btn:hover { background: var(--accent-soft); }
.text-btn.subtle { color: var(--muted); }
.text-btn.subtle:hover { background: var(--surface-2); }

.icon-btn {
  width: 38px; height: 38px; display: inline-grid; place-items: center;
  border: 1px solid var(--border); background: var(--surface); border-radius: 10px;
  font-size: 1.3rem; line-height: 1;
}
.icon-btn:hover:not(:disabled) { background: var(--surface-2); }

.badge {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .02em;
  padding: 2px 8px; border-radius: 999px; vertical-align: middle;
}
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.danger { background: var(--danger-soft); color: var(--danger); }
.badge.neutral { background: var(--surface-2); color: var(--muted); }

.section-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 8px 0 12px; }
.section-head h2 { font-size: 1.15rem; }

.empty { text-align: center; padding: 36px 20px; }
.empty h2 { margin-bottom: 6px; }
.empty p { margin: 0 0 16px; }

/* ---------- Today ---------- */
.day-nav { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.day-title { flex: 1; text-align: center; min-width: 0; }
.day-label { font-weight: 700; font-size: 1.15rem; }
.day-sub { color: var(--muted); font-size: .9rem; }
.back-today { display: block; margin: -4px auto 12px; }

.progress-card { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.ring {
  --p: 0;
  width: 64px; height: 64px; border-radius: 50%; flex: none;
  background: conic-gradient(var(--ok) calc(var(--p) * 1%), var(--surface-2) 0);
  display: grid; place-items: center;
}
.ring span {
  width: 50px; height: 50px; border-radius: 50%; background: var(--surface);
  display: grid; place-items: center; font-weight: 700; font-size: .9rem;
}
.progress-text strong { font-size: 1.05rem; }

.slot { margin-bottom: 18px; }
.slot-time {
  font-size: .8rem; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); margin: 0 0 8px 4px; display: flex; align-items: center; gap: 8px;
}
.dose-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.dose {
  display: flex; align-items: center; gap: 12px;
  background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--c, var(--accent));
  border-radius: var(--radius); padding: 12px 12px 12px 10px; box-shadow: var(--shadow);
  transition: background .15s;
}
.dose.taken { background: color-mix(in srgb, var(--ok-soft) 55%, var(--surface)); }
.dose.taken .dose-name { text-decoration: line-through; text-decoration-color: color-mix(in srgb, var(--text) 40%, transparent); }
.dose.skipped { opacity: .7; }
.check {
  width: 40px; height: 40px; flex: none; border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--c, var(--accent)) 70%, var(--border));
  background: transparent; color: transparent; display: grid; place-items: center;
  transition: background .15s, color .15s, transform .1s;
}
.check:hover:not(:disabled) { background: color-mix(in srgb, var(--c, var(--accent)) 12%, transparent); color: color-mix(in srgb, var(--c, var(--accent)) 60%, transparent); }
.check:active:not(:disabled) { transform: scale(.92); }
.check[aria-pressed="true"] { background: var(--ok); border-color: var(--ok); color: var(--surface); }
.check:disabled { opacity: .45; }
.dose-info { flex: 1; min-width: 0; }
.dose-name { font-weight: 650; overflow-wrap: anywhere; }
.dose-meta { color: var(--muted); font-size: .875rem; overflow-wrap: anywhere; }
.dose-status { font-size: .8rem; margin-top: 2px; }
.dose-status.ok { color: var(--ok); }
.dose-status.warn { color: var(--warn); }
.dose-status.danger { color: var(--danger); }
.dose-status.neutral { color: var(--muted); }

/* ---------- Medications ---------- */
.med-list { list-style: none; margin: 0 0 24px; padding: 0; display: grid; gap: 10px; }
.med-card { display: flex; gap: 12px; align-items: flex-start; }
.med-card.stopped { opacity: .75; }
.med-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--c); margin-top: 6px; flex: none; }
.med-body { flex: 1; min-width: 0; }
.med-name { font-weight: 650; overflow-wrap: anywhere; }
.med-line { color: var(--muted); font-size: .875rem; overflow-wrap: anywhere; }
.time-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0 4px; }
.time-chip { font-size: .8rem; font-weight: 600; padding: 2px 8px; border-radius: 999px; background: var(--surface-2); }
.subhead { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 8px 4px; }

.settings h2 { margin-bottom: 12px; }
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 4px 0 14px; border-bottom: 1px solid var(--border); margin-bottom: 14px; cursor: pointer; }
.switch-row small { display: block; color: var(--muted); font-size: .825rem; }
.switch {
  appearance: none; width: 44px; height: 26px; border-radius: 999px; flex: none;
  background: var(--surface-2); border: 1px solid var(--border); position: relative; cursor: pointer;
  transition: background .15s;
}
.switch::after {
  content: ""; position: absolute; top: 2px; left: 2px; width: 20px; height: 20px; border-radius: 50%;
  background: var(--surface); box-shadow: 0 1px 3px rgba(0,0,0,.25); transition: transform .15s;
}
.switch:checked { background: var(--accent); border-color: var(--accent); }
.switch:checked::after { transform: translateX(18px); }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.fineprint { font-size: .8rem; color: var(--muted); margin: 12px 0 0; }

/* ---------- History ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-bottom: 16px; }
.stat { padding: 14px; }
.stat-value { font-size: 1.5rem; font-weight: 750; letter-spacing: -.02em; }
.stat-label { color: var(--muted); font-size: .8rem; }

.calendar { margin-bottom: 16px; }
.calendar h2 { margin-bottom: 12px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal-head { font-size: .72rem; color: var(--muted); text-align: center; font-weight: 600; }
.cell {
  aspect-ratio: 1; border: 0; border-radius: 8px; background: var(--h-none);
  font-size: .78rem; font-weight: 600; color: var(--muted); display: grid; place-items: center;
}
.cell.l0 { background: var(--h0); color: var(--text); }
.cell.l1 { background: var(--h1); color: var(--text); }
.cell.l2 { background: var(--h2); color: var(--text); }
.cell.l3 { background: var(--h3); color: #06250f; }
.cell.l4 { background: var(--h4); color: #fff; }
@media (prefers-color-scheme: dark) { .cell.l4 { color: #06250f; } }
.cell.future { background: transparent; border: 1px dashed var(--border); color: var(--muted); opacity: .6; }
.cell.is-today { outline: 2px solid var(--accent); outline-offset: 1px; }
.cell:not(:disabled):hover { filter: brightness(.95); }
.legend { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: .75rem; color: var(--muted); margin-top: 12px; }
.legend i { width: 14px; height: 14px; border-radius: 4px; display: inline-block; }

.adherence h2 { margin-bottom: 12px; }
.adh-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 4px 12px; margin-bottom: 12px; }
.adh-row:last-child { margin-bottom: 0; }
.adh-name { font-weight: 600; font-size: .925rem; overflow-wrap: anywhere; }
.adh-pct { font-weight: 700; font-size: .925rem; }
.bar { grid-column: 1 / -1; height: 8px; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.bar span { display: block; height: 100%; border-radius: inherit; background: var(--c); }

/* ---------- Dialog ---------- */
dialog {
  border: 1px solid var(--border); border-radius: 18px; padding: 0;
  width: min(520px, calc(100vw - 32px)); max-height: calc(100vh - 32px);
  background: var(--surface); color: var(--text); box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
dialog::backdrop { background: rgba(10, 15, 25, .45); }
#med-form { display: flex; flex-direction: column; max-height: calc(100vh - 34px); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; padding: 16px 16px 8px 20px; }
.dialog-body { padding: 8px 20px; overflow-y: auto; }
.dialog-foot { display: flex; flex-wrap: wrap; gap: 8px; padding: 14px 20px 18px; border-top: 1px solid var(--border); }
.spacer { flex: 1; }

.field { display: block; border: 0; padding: 0; margin: 0 0 16px; min-width: 0; }
.label { display: block; font-size: .85rem; font-weight: 650; margin-bottom: 6px; padding: 0; }
.label em { font-style: normal; font-weight: 400; color: var(--muted); }
.field input:not([type=checkbox]):not([type=radio]), .field textarea {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg);
}
.field textarea { resize: vertical; }
.field input:focus, .field textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }

.time-list { display: grid; gap: 8px; margin-bottom: 6px; }
.time-row { display: flex; gap: 8px; align-items: center; }
.time-row input { flex: 1; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip input, .swatch input { position: absolute; opacity: 0; pointer-events: none; }
.chip span {
  display: inline-block; min-width: 48px; text-align: center; padding: 6px 10px;
  border-radius: 999px; border: 1px solid var(--border); font-size: .85rem; font-weight: 600;
  cursor: pointer; user-select: none;
}
.chip input:checked + span { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.chip input:focus-visible + span, .swatch input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }

.swatches { display: flex; flex-wrap: wrap; gap: 10px; }
.swatch { position: relative; }
.swatch span {
  display: block; width: 30px; height: 30px; border-radius: 50%; background: var(--c);
  cursor: pointer; border: 3px solid var(--surface); box-shadow: 0 0 0 1px var(--border);
}
.swatch input:checked + span { box-shadow: 0 0 0 2px var(--text); }

/* ---------- Sign in ---------- */
.signed-out .tabs { display: none; }
.loading { text-align: center; padding: 48px 0; }
.auth { max-width: 400px; margin: 32px auto 0; padding: 24px; }
.auth h2 { font-size: 1.3rem; margin-bottom: 4px; }
.auth > p { margin: 0 0 20px; }
.auth-error { color: var(--danger); font-size: .875rem; min-height: 1.3em; margin: -4px 0 12px; }
.auth-switch { text-align: center; margin: 16px 0 0; }
.btn.full { width: 100%; padding: 11px 14px; }
.account-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding-bottom: 14px; margin-bottom: 14px; border-bottom: 1px solid var(--border);
}
.account-row span { min-width: 0; overflow-wrap: anywhere; }
.account-row small { display: block; color: var(--muted); font-size: .8rem; }

.presets { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--border); }
.presets summary { cursor: pointer; font-weight: 600; font-size: .925rem; }
.preset-list { list-style: none; margin: 8px 0 0; padding: 0; max-height: 280px; overflow-y: auto; }
.preset-list li {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 6px 0; border-bottom: 1px solid var(--border); font-size: .9rem;
}
.preset-list li:last-child { border-bottom: 0; }
.preset-list li > span { min-width: 0; overflow-wrap: anywhere; }

/* ---------- Toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 12px;
  font-size: .9rem; font-weight: 500; max-width: calc(100vw - 32px);
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 100;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 480px) {
  .brand { font-size: 1rem; }
  .tabs { width: 100%; }
  .tabs button { flex: 1; padding: 6px 8px; }
  .stats { gap: 8px; }
  .stat { padding: 12px 10px; }
  .stat-value { font-size: 1.25rem; }
  .cal-grid { gap: 4px; }
}