:root {
  color-scheme: dark;
  --bg: #101315;
  --surface: #181c1f;
  --surface-raised: #20252a;
  --border: #2b3136;
  --text: #e9ecee;
  --muted: #9aa3aa;
  --accent: #7fd1b9;
  --accent-ink: #0b1f1a;
  --danger: #f0928a;
  --warn: #e8c07a;
  --radius: 14px;
  --tap: 44px;
  --nav-height: 62px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

h1, h2, h3, p { margin: 0; }
h1 { font-size: 1.75rem; line-height: 1.2; letter-spacing: -0.01em; }
h2 { font-size: 1.05rem; font-weight: 600; }
h3 { font-size: 1.05rem; font-weight: 600; }
a { color: inherit; text-decoration: none; }
small { font-size: 0.8rem; }
[hidden] { display: none !important; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
#view:focus { outline: none; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip-path: inset(50%); white-space: nowrap;
}

/* Layout */
#view {
  padding: calc(env(safe-area-inset-top, 0px) + 20px) 16px calc(var(--nav-height) + var(--safe-bottom) + 28px);
  max-width: 640px;
  margin: 0 auto;
}
.page { display: flex; flex-direction: column; gap: 26px; }
.page > section { display: flex; flex-direction: column; gap: 10px; }
.page-header { display: flex; align-items: center; gap: 8px; min-height: var(--tap); }
.page-header p { margin-top: 2px; }
.page-header .icon-button { margin-left: -10px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.stack.tight { gap: 8px; }
.two-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; min-width: 0; }
.two-columns > * { min-width: 0; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 28px; }
.section-meta { color: var(--muted); font-size: 0.85rem; font-variant-numeric: tabular-nums; }
.section-help { margin-top: -4px; }
.result-count { margin-top: 2px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.card.flush { padding: 0; overflow: hidden; }
.empty { color: var(--muted); padding: 22px 8px; text-align: center; }
.empty .button { margin-top: 12px; }

/* Icons and buttons */
.icon { display: inline-flex; width: 22px; height: 22px; flex: none; }
.icon svg { width: 100%; height: 100%; }

.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--tap); padding: 0 16px; width: 100%;
  border: 1px solid var(--border); border-radius: 11px;
  background: var(--surface-raised); color: var(--text);
  font: inherit; font-weight: 600; cursor: pointer;
}
.button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.button.danger { background: var(--danger); border-color: var(--danger); color: #2a0f0c; }
.button.text-danger { background: none; border-color: transparent; color: var(--danger); }
.button:disabled { opacity: 0.6; cursor: default; }
.button-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.icon-button {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: var(--tap); height: var(--tap); padding: 0;
  border: 0; border-radius: 10px; background: none; color: var(--muted); cursor: pointer;
}
.icon-button.small .icon { width: 19px; height: 19px; }
.icon-button.accent { color: var(--accent-ink); background: var(--accent); width: 36px; height: 36px; }
.icon-button.hidden { visibility: hidden; }

.link-button {
  display: inline-flex; align-items: center; gap: 6px; min-height: var(--tap);
  color: var(--accent); font-weight: 600; font-size: 0.95rem;
}
.link-button .icon { width: 19px; height: 19px; }

/* Forms: 16px text stops iOS zooming on focus. */
input, textarea, select {
  width: 100%; min-height: var(--tap); padding: 10px 12px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg); color: var(--text); font: inherit; font-size: 16px;
}
input[type="date"] { min-width: 0; -webkit-appearance: none; appearance: none; }
textarea { display: block; resize: none; overflow: hidden; }
::placeholder { color: #7a838a; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field > span { color: var(--muted); font-size: 0.85rem; }
.form-error { color: var(--danger); font-size: 0.92rem; }

/* Login */
.login-page { display: flex; min-height: 100dvh; align-items: center; justify-content: center; padding: 20px; }
.login { width: 100%; max-width: 360px; display: flex; flex-direction: column; gap: 18px; }
.login h1 { text-align: center; }

/* Today */
.note-row { display: flex; align-items: flex-start; gap: 4px; padding: 3px 10px 3px 14px; }
.note-row + .note-row { border-top: 1px solid var(--border); }
.note-number { color: var(--muted); font-size: 0.85rem; padding-top: 12px; width: 16px; flex: none; font-variant-numeric: tabular-nums; }
.note-row textarea { border-color: transparent; background: none; padding-left: 6px; }

.check-row {
  display: flex; align-items: center; gap: 12px; min-height: 60px;
  padding: 10px 14px; cursor: pointer; position: relative;
}
.check-row + .check-row { border-top: 1px solid var(--border); }
.check-row.empty-slot { cursor: default; font-size: 0.92rem; }
.check-row input { position: absolute; opacity: 0; width: 1px; height: 1px; min-height: 0; padding: 0; }
.check-box {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 28px; height: 28px; border: 2px solid var(--border); border-radius: 9px; color: transparent;
}
.check-box .icon { width: 18px; height: 18px; }
.check-text { display: flex; flex-direction: column; min-width: 0; }
.check-text strong { font-weight: 500; }
.check-text small { color: var(--muted); }
.check-row input:checked + .check-box { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.check-row input:checked ~ .check-text strong { color: var(--muted); text-decoration: line-through; }
.check-row input:focus-visible + .check-box { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Schedule */
.day-card { display: flex; flex-direction: column; gap: 8px; padding: 0 14px 12px; }
.day-card.today { border-color: var(--accent); }
.day-link { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 0 4px; min-height: 60px; }
.day-link .icon { color: var(--muted); }
.day-link h2 { display: flex; align-items: center; gap: 8px; }
.today-tag {
  color: var(--accent); font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.type-tag { text-transform: capitalize; }
.day-card textarea, .exercise > textarea { background: var(--bg); }

/* Day and exercise tables */
.exercise { display: flex; flex-direction: column; gap: 10px; }
.exercise-head {
  display: flex; align-items: flex-start; justify-content: space-between; gap: 12px;
  width: 100%; padding: 0; border: 0; background: none;
  color: inherit; font: inherit; text-align: left; cursor: pointer;
}
.exercise-head > .icon { color: var(--muted); margin-top: 1px; }
.next-line { color: var(--accent); font-size: 0.92rem; margin-top: 2px; }
.exercise-actions { display: flex; align-items: center; gap: 4px; }
.exercise-actions .button { margin-left: auto; width: auto; }

.table-wrap { margin: 0 -6px; }
.sessions { width: 100%; border-collapse: collapse; table-layout: fixed; font-size: 0.92rem; }
.sessions th, .sessions td { padding: 4px 3px; text-align: left; overflow-wrap: anywhere; }
.sessions thead th { color: var(--muted); font-size: 0.75rem; font-weight: 500; }
.sessions thead th:nth-child(1) { width: 60px; }
.sessions thead th:nth-child(3) { width: 48px; }
.sessions thead th:nth-child(4) { width: 62px; }
.sessions thead th:nth-child(5) { width: 42px; }
.sessions .group th {
  color: var(--muted); font-size: 0.72rem; font-weight: 700;
  letter-spacing: 0.06em; text-transform: uppercase; padding-top: 12px;
}
.sessions .date-cell { color: var(--muted); font-size: 0.82rem; white-space: nowrap; }
.sessions input { min-height: 40px; padding: 6px; border-radius: 8px; }
.sessions .next input { border-color: #3c6157; }
.sessions .icon-button { width: 36px; height: 36px; }

/* Logs */
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  min-height: 36px; padding: 0 13px; border: 1px solid var(--border); border-radius: 999px;
  background: none; color: var(--muted); font: inherit; font-size: 0.88rem; cursor: pointer;
}
.chip.active { border-color: var(--accent); color: var(--accent); }

.severity-picker { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; }
.severity-picker button {
  min-height: var(--tap); border: 1px solid var(--border); border-radius: 10px;
  background: var(--bg); color: var(--text); font: inherit; font-weight: 600;
  font-variant-numeric: tabular-nums; cursor: pointer;
}
.severity-picker button.selected { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.entry { display: flex; align-items: flex-start; gap: 6px; padding: 12px 6px 12px 14px; }
.entry + .entry { border-top: 1px solid var(--border); }
.entry-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 3px; align-items: flex-start; }
.entry time { color: var(--muted); font-size: 0.82rem; }
.entry-text { white-space: pre-wrap; overflow-wrap: anywhere; }
.severity { font-size: 0.82rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.severity.low { color: var(--accent); }
.severity.medium { color: var(--warn); }
.severity.high { color: var(--danger); }

/* Manage */
.bucket { padding: 0; }
.bucket summary {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  min-height: 52px; padding: 8px 14px; font-weight: 600; cursor: pointer; list-style: none;
}
.bucket summary::-webkit-details-marker { display: none; }
.bucket > .stack { padding: 2px 14px 14px; }
.edit-row { display: flex; align-items: center; gap: 2px; }
.add-row { display: flex; gap: 8px; }
.add-row .button { width: auto; flex: none; }

/* Bottom navigation */
.tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: grid; grid-template-columns: repeat(5, 1fr);
  padding-bottom: var(--safe-bottom);
  background: rgba(16, 19, 21, 0.94);
  border-top: 1px solid var(--border);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.tabs a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  height: var(--nav-height); color: var(--muted); font-size: 0.7rem;
}
.tabs a.active { color: var(--accent); }

/* Bottom sheet */
.sheet {
  width: 100%; max-width: 520px; max-height: 88dvh; margin: auto auto 0; padding: 0;
  border: 1px solid var(--border); border-bottom: 0; border-radius: 18px 18px 0 0;
  background: var(--surface); color: var(--text);
}
.sheet::backdrop { background: rgba(0, 0, 0, 0.55); }
.sheet-body { padding: 18px 16px calc(var(--safe-bottom) + 16px); }

.toast {
  position: fixed; left: 50%; transform: translateX(-50%); z-index: 30;
  bottom: calc(var(--nav-height) + var(--safe-bottom) + 12px);
  max-width: calc(100% - 32px); padding: 9px 14px; border-radius: 10px;
  background: var(--surface-raised); border: 1px solid var(--border); font-size: 0.92rem;
}
.toast.error { border-color: var(--danger); color: var(--danger); }

@media (min-width: 700px) {
  #view { padding-top: 36px; }
  .sheet { margin: auto; border-bottom: 1px solid var(--border); border-radius: 18px; }
  .tabs { left: 50%; right: auto; bottom: 16px; width: 480px; transform: translateX(-50%); border: 1px solid var(--border); border-radius: 16px; padding-bottom: 0; }
  .tabs a { height: 56px; }
}