:root {
  color-scheme: light dark;
  --bg: #f6f5f1;
  --fg: #1c1e20;
  --muted: #5d6368;
  --surface: #ffffff;
  --border: #d8d6cf;
  --accent: #2f6f5a;
  --on-accent: #ffffff;
  --error: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181a;
    --fg: #ececea;
    --muted: #9aa0a5;
    --surface: #202326;
    --border: #34383c;
    --accent: #5fb496;
    --on-accent: #0e1512;
    --error: #f2877f;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.4 system-ui, -apple-system, sans-serif;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 32rem;
  margin: 0 auto;
  padding: max(1.25rem, env(safe-area-inset-top)) 1rem max(1.25rem, env(safe-area-inset-bottom));
}

h1 {
  font-size: 1.6rem;
  margin: 0 0 1.25rem;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

/* Thumb-sized controls: at least 48px tall. */
input,
button,
.button {
  min-height: 3rem;
  font: inherit;
  border-radius: 0.75rem;
}

input {
  width: 100%;
  padding: 0.5rem 0.875rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg);
  /* 16px+ stops iOS zooming into the field. */
  font-size: 1.0625rem;
}

button,
.button {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
}

.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}

.big {
  min-height: 5.5rem;
  font-size: 1.35rem;
}

.links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.links a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--fg);
  text-decoration: none;
}

button.link {
  width: 100%;
  border: 0;
  background: none;
  color: var(--muted);
}

.error {
  margin: 0;
  color: var(--error);
}

/* Meals */
.confirmation {
  margin: 0 0 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}

.muted {
  color: var(--muted);
}

h2 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.5rem;
}

.meals {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.meals a {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 0.75rem;
  padding: 0.625rem 0.875rem;
  min-height: 3rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--fg);
  text-decoration: none;
}

.meals time {
  grid-row: span 2;
  align-self: center;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.meals span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

label {
  display: block;
  margin-bottom: 0.25rem;
}

textarea {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--fg);
  font: inherit;
  font-size: 1.0625rem;
}

fieldset.chips {
  border: 0;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.5rem;
}

fieldset.chips legend {
  padding: 0;
  margin-bottom: 0.25rem;
}

.chip {
  margin: 0;
  position: relative;
}

.chip input {
  position: absolute;
  opacity: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: pointer;
}

.chip span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 3.5rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
}

.chip input:checked + span {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
}

.chip input:focus-visible + span {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

button.danger {
  width: 100%;
  margin-top: 1rem;
  color: var(--error);
  border-color: var(--error);
}

.recents .label {
  margin: 0 0 0.25rem;
  color: var(--muted);
}

.recents-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

button.recent {
  min-height: 2.75rem;
  max-width: 100%;
  padding: 0.25rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--fg);
  font: inherit;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Measurement form */
.field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.derived {
  margin: 0;
  color: var(--muted);
}

/* Historial */
.history {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.history a {
  display: block;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--surface);
  color: var(--fg);
  text-decoration: none;
}

.entry-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.entry-head time {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.note-flag {
  margin-left: auto;
  font-size: 0.85rem;
  color: var(--muted);
}

.history dl {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(6.5rem, 1fr));
  gap: 0.25rem 0.75rem;
  margin: 0.5rem 0 0;
}

.history dt {
  font-size: 0.8rem;
  color: var(--muted);
}

.history dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
}

.day h3 {
  font-size: 1rem;
  margin: 1rem 0 0.5rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}