:root {
  --bg: #f7f5ff;
  --surface: #ffffff;
  --text: #1c1b22;
  --muted: #6b6b78;
  --accent: #7c5cff;
  --accent-soft: #ebe6ff;
  --sleep: #6c8cff;
  --eat: #ff9b3d;
  --pee: #ffd23f;
  --poo: #8a5a3b;
  --weight: #2bb3a3;
  --danger: #d64545;
  --gain: #2e9e5b;
  --border: #e9e6f5;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 14, 60, 0.05), 0 4px 16px rgba(20, 14, 60, 0.05);
}

/* Dark palette. Two triggers, same values (CSS has no way to share them):
   system prefers dark and the user hasn't forced light, OR the user picked
   dark via the Settings toggle. The [data-theme] attribute (set from JS) beats
   the media query on specificity, so an explicit choice always wins. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14131a;
    --surface: #1f1e28;
    --text: #ebeaf2;
    --muted: #9c9bab;
    --accent: #a690ff;
    --accent-soft: #2a2640;
    --border: #2c2a3a;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.3);
  }
}
:root[data-theme="dark"] {
  --bg: #14131a;
  --surface: #1f1e28;
  --text: #ebeaf2;
  --muted: #9c9bab;
  --accent: #a690ff;
  --accent-soft: #2a2640;
  --border: #2c2a3a;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 4px 16px rgba(0, 0, 0, 0.3);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.4;
}

body {
  max-width: 720px;
  margin: 0 auto;
  padding: env(safe-area-inset-top, 0) 16px env(safe-area-inset-bottom, 0) 16px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 4px 8px;
}

h1 {
  font-size: 1.5rem;
  margin: 0;
}

.title {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.puppy-age {
  font-size: 0.8rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.icon-btn {
  padding: 6px 10px;
  font-size: 1.1rem;
  line-height: 1;
}

h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 12px;
}

main {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding: 16px 0 32px;
}

section {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
}

.big-clock {
  text-align: center;
  padding: 24px 16px;
}

.day-bar {
  display: flex;
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
}
.day-bar input[type="date"] {
  flex: 1;
  min-width: 0;
  font-variant-numeric: tabular-nums;
}
.day-bar button {
  padding: 8px 14px;
  flex-shrink: 0;
}
.day-bar button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.big-clock .bc-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 6px;
}
.big-clock .bc-time {
  font-size: 3.25rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
  letter-spacing: -0.01em;
}
.big-clock .bc-since {
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.big-clock.asleep { background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--sleep) 10%, var(--surface))); }
.big-clock.asleep .bc-time { color: var(--sleep); }
.big-clock.awake  { background: linear-gradient(180deg, var(--surface), color-mix(in srgb, var(--accent) 10%, var(--surface))); }
.big-clock.awake  .bc-time { color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
}

button {
  font: inherit;
  border: none;
  border-radius: var(--radius);
  padding: 14px 12px;
  cursor: pointer;
  background: var(--accent);
  color: white;
  font-weight: 600;
  transition: transform 0.08s ease, filter 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

button:active { transform: scale(0.97); }
button:hover { filter: brightness(1.05); }

button.action.sleep { background: var(--sleep); }
button.action.eat   { background: var(--eat); }
button.action.pee   { background: var(--pee); color: #2b240a; }
button.action.poo   { background: var(--poo); }
button.action.weight { background: var(--weight); }

button.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  font-weight: 500;
  padding: 10px 14px;
}

button.danger { background: var(--danger); }

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.stat {
  background: var(--accent-soft);
  padding: 12px;
  border-radius: var(--radius);
  text-align: center;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 4px;
}

.lasts {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.last-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 4px;
  font-size: 0.95rem;
  border-bottom: 1px dashed var(--border);
}
.last-row:last-child { border-bottom: none; }
.last-row span:first-child { color: var(--muted); }

.muted-note {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: normal;
}
.timing-hint { margin: 10px 4px 0; line-height: 1.4; }

.history-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.history-controls label { color: var(--muted); font-size: 0.85rem; }

input[type="date"], input[type="datetime-local"], input[type="text"], input[type="number"], textarea {
  font: inherit;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  width: 100%;
}

textarea { resize: vertical; }

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

.wake-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.ww {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
}
.ww .ww-range {
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  min-width: 120px;
}
.ww .ww-dur {
  font-weight: 600;
  flex: 1;
}
.ww.ongoing {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.ww.ongoing .ww-tag {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ww.sleep-ww.ongoing {
  border-color: var(--sleep);
  background: color-mix(in srgb, var(--sleep) 14%, var(--surface));
}
.ww.sleep-ww.ongoing .ww-tag { color: var(--sleep); }

.event {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  cursor: pointer;
}

.event .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}
.event[data-type="sleep-start"] .dot,
.event[data-type="sleep-end"] .dot { background: var(--sleep); }
.event[data-type="eat"] .dot { background: var(--eat); }
.event[data-type="pee"] .dot { background: var(--pee); }
.event[data-type="poo"] .dot { background: var(--poo); }
.event[data-type="weight"] .dot { background: var(--weight); }

.event .time { font-variant-numeric: tabular-nums; color: var(--muted); min-width: 60px; }
.event .label { font-weight: 600; min-width: 110px; }
.event .note { color: var(--muted); font-size: 0.9rem; flex: 1; }

.empty {
  color: var(--muted);
  text-align: center;
  padding: 12px 0;
}

.status-pill {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.status-pill.offline { background: #ffe0e0; color: #b03030; }
.status-pill.error   { background: #ffe0e0; color: #b03030; }
.status-pill.syncing { background: #e0eaff; color: #2a4ab0; }
.status-pill.pending { background: #fff1d4; color: #8a5a00; }
@media (prefers-color-scheme: dark) {
  .status-pill.offline { background: #4a1f1f; color: #ff9090; }
  .status-pill.error   { background: #4a1f1f; color: #ff9090; }
  .status-pill.syncing { background: #1f2c4a; color: #9eb6ff; }
  .status-pill.pending { background: #4a3a1f; color: #ffd28a; }
}

dialog {
  border: none;
  border-radius: var(--radius);
  padding: 20px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
  max-width: 480px;
  width: calc(100% - 32px);
}

dialog::backdrop { background: rgba(0,0,0,0.4); }

dialog h3 { margin: 0 0 12px; }

dialog label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 10px; }
dialog label input, dialog label textarea { margin-top: 4px; }

dialog menu {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 0;
  margin: 14px 0 0;
}

.photo-field {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.photo-field button { padding: 8px 12px; }
.photo-preview {
  margin-top: 8px;
  width: 100%;
}
.photo-preview img {
  display: block;
  max-width: 100%;
  max-height: 240px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.event .thumb {
  width: 40px;
  height: 40px;
  border-radius: 6px;
  object-fit: cover;
  border: 1px solid var(--border);
  flex-shrink: 0;
  cursor: zoom-in;
  background: var(--accent-soft);
}

#lightbox {
  background: #000;
  padding: 0;
  border: none;
  max-width: 100vw;
  max-height: 100vh;
  width: auto;
  height: auto;
}
#lightbox::backdrop { background: rgba(0,0,0,0.85); }
#lightbox img {
  display: block;
  max-width: 95vw;
  max-height: 95vh;
  object-fit: contain;
}
.lightbox-close {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  padding: 4px 12px 6px;
  border-radius: 999px;
  font-weight: 400;
}

.time-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}
.time-row input { flex: 1 1 120px; min-width: 0; }
.time-row button { padding: 8px 12px; }

.chart { margin-bottom: 16px; }
.chart:last-child { margin-bottom: 0; }
.chart-title {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.chart-svg { display: block; width: 100%; height: auto; }
.chart-svg text { fill: var(--muted); font-size: 9px; }
.chart-svg .grid {
  stroke: var(--border);
  stroke-dasharray: 2 3;
}
.chart-svg .bar { cursor: pointer; }
.chart-svg .bar-faded { opacity: 0.7; }
.chart-svg .bar-sleep { fill: var(--sleep); }
.chart-svg .bar-pee   { fill: var(--pee); }
.chart-svg .bar-poo   { fill: var(--poo); }
.chart-svg .bar-eat   { fill: var(--eat); }
.chart-svg .weight-line { stroke: var(--weight); stroke-width: 2; fill: none; }
.chart-svg .weight-dot  { fill: var(--weight); }
.chart-svg .weight-hit  { fill: transparent; cursor: pointer; }
.chart-svg .weight-hit.active {
  fill: color-mix(in srgb, var(--weight) 22%, transparent);
  stroke: var(--weight);
  stroke-width: 1.5;
}

.weight-point-info {
  margin: 6px 4px 0;
  min-height: 1.2em;
  text-align: center;
}

.weight-summary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}
.weight-summary .stat-value.up   { color: var(--gain); }
.weight-summary .stat-value.down { color: var(--danger); }
.ww.weight-ww { cursor: pointer; }
.ww.weight-ww .ww-dur { text-align: right; }

.legend {
  display: flex;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 8px;
  flex-wrap: wrap;
}
.lg { display: inline-flex; align-items: center; gap: 5px; }
.lg .sw {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  display: inline-block;
}
.lg.pee .sw { background: var(--pee); }
.lg.poo .sw { background: var(--poo); }
.lg.eat .sw { background: var(--eat); }

/* ---------- auth (login / register) ---------- */
.auth-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--bg);
  z-index: 50;
}
/* The display rule above beats the UA [hidden] rule, so hide explicitly. */
.auth-screen[hidden] { display: none; }
.auth-card {
  width: 100%;
  max-width: 360px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 22px;
}
.auth-card h1 { margin: 0 0 4px; font-size: 1.5rem; text-align: center; }
.auth-sub { margin: 0 0 20px; text-align: center; color: var(--muted); font-size: 0.9rem; }
.auth-card label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 12px;
}
.auth-card input[type="email"],
.auth-card input[type="password"],
.auth-card input[type="text"] {
  font: inherit;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  width: 100%;
  margin-top: 4px;
}
.auth-card #auth-submit { width: 100%; margin-top: 6px; }
.auth-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin: 0 0 12px;
  text-align: center;
}
.auth-toggle {
  margin: 16px 0 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}
button.linklike {
  background: none;
  border: none;
  color: var(--accent);
  font-weight: 600;
  padding: 0 0 0 4px;
  display: inline;
  cursor: pointer;
}
button.linklike:hover { text-decoration: underline; filter: none; }

/* ---------- delete account ---------- */
.settings-sep {
  border: none;
  border-top: 1px solid var(--border);
  margin: 18px 0 12px;
}
.danger-block { width: 100%; }
.danger-text {
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0 0 14px;
  line-height: 1.4;
}
.danger-text strong { color: var(--danger); }

/* ---------- settings toggle switch ---------- */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.toggle-row > span { color: var(--text); font-size: 0.95rem; }
input.switch {
  appearance: none;
  -webkit-appearance: none;
  width: 44px;
  height: 26px;
  margin: 0;
  border-radius: 13px;
  background: var(--border);
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.15s ease;
}
input.switch::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.15s ease;
}
input.switch:checked { background: var(--accent); }
input.switch:checked::after { transform: translateX(18px); }