:root {
  --bg: #f4f6f5;
  --card: #ffffff;
  --ink: #1c2b2a;
  --muted: #6b7c7a;
  --teal: #0f766e;
  --teal-dark: #0b5a54;
  --teal-soft: #e0f2ef;
  --amber: #d97706;
  --amber-soft: #fef3e2;
  --red: #dc2626;
  --red-soft: #fdeaea;
  --green: #16a34a;
  --green-soft: #e7f6ec;
  --line: #e2e8e7;
  --radius: 14px;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  padding-bottom: env(safe-area-inset-bottom);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--teal);
  color: #fff;
  padding: 10px 0 0;
  box-shadow: 0 2px 10px rgba(0,0,0,.18);
}
.topbar-inner { max-width: 680px; margin: 0 auto; padding: 0 12px; }

.brand { display: flex; align-items: center; gap: 8px; }
.brand h1 { margin: 0; font-size: 1.25rem; letter-spacing: .3px; }
.logo { width: 26px; height: 26px; }

.tabs { display: flex; gap: 4px; margin-top: 8px; }
.tab {
  flex: 1;
  border: none;
  background: transparent;
  color: rgba(255,255,255,.75);
  font-size: .95rem;
  font-weight: 600;
  padding: 9px 4px;
  border-radius: 10px 10px 0 0;
  cursor: pointer;
}
.tab.active { background: var(--bg); color: var(--teal-dark); }

main { max-width: 680px; margin: 0 auto; padding: 14px 12px 40px; }
.panel { display: none; }
.panel.active { display: block; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 14px;
  border: 1px solid var(--line);
  box-shadow: 0 1px 3px rgba(0,0,0,.05);
}
.card h2 { margin: 0 0 10px; font-size: 1.05rem; }

.date-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.date-nav input[type="date"] {
  flex: 1;
  min-width: 0;
  font-size: 1rem;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  color: var(--ink);
}
.btn-icon {
  width: 38px; height: 38px;
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  color: var(--teal-dark);
}

.weight-card label { font-weight: 600; font-size: .9rem; color: var(--muted); }
.weight-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sleep-box { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.sleep-label { font-size: 1rem; }
.sleep-lights { display: flex; gap: 6px; }
.sleep-light {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: transform .1s;
}
.sleep-light:active { transform: scale(.85); }
.sleep-light.red { border-color: #efb3b3; }
.sleep-light.amber { border-color: #efd7ab; }
.sleep-light.green { border-color: #b3ddc0; }
.sleep-light.red.on { border-color: var(--red); background: var(--red); }
.sleep-light.amber.on { border-color: var(--amber); background: var(--amber); }
.sleep-light.green.on { border-color: var(--green); background: var(--green); }

.bath-row { display: flex; gap: 8px; }
.bath-btn {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
}
.bath-btn:active { transform: scale(.98); }
.bath-btn.yes.on { background: var(--green-soft); border-color: var(--green); color: var(--green); }
.bath-btn.no.on { background: var(--amber-soft); border-color: var(--amber); color: var(--amber); }

.pill-row { display: flex; gap: 8px; }
.pill-btn {
  flex: 1;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
}
.pill-btn:active { transform: scale(.98); }
.pill-btn.on { background: var(--green-soft); border-color: var(--green); color: var(--green); }
#morningWeight {
  font-size: 1.6rem;
  font-weight: 700;
  width: 130px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--teal-dark);
}
.delta { font-size: .9rem; font-weight: 600; }
.delta.down { color: var(--green); }
.delta.up { color: var(--red); }

.summary-card { background: var(--teal-soft); border-color: #c4e3dd; }
.summary-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; text-align: center; }
.sum-box { display: flex; flex-direction: column; }
.sum-num { font-size: 1.5rem; font-weight: 800; color: var(--teal-dark); }
.sum-label { font-size: .75rem; color: var(--muted); }
.goal-line { margin: 10px 0 0; font-size: .88rem; color: var(--muted); text-align: center; }
.goal-line b { color: var(--ink); }

.add-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}
.add-form select, .add-form input {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: .95rem;
  min-width: 0;
}
.add-form .food-search { grid-column: 1 / -1; position: relative; }
.food-search input { width: 100%; }
.add-form .btn { grid-column: 1 / -1; }

#exForm input[type="text"] { grid-column: 1 / -1; }

.ex-quick { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; }
.ex-quick .btn { background: var(--teal-soft); border-color: #c4e3dd; color: var(--teal-dark); }

.btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  font-size: .95rem;
  font-weight: 600;
  padding: 9px 14px;
  border-radius: 10px;
  cursor: pointer;
  text-align: center;
}
.btn.primary { background: var(--teal); border-color: var(--teal); color: #fff; }
.btn.small { padding: 6px 10px; font-size: .85rem; }
.btn.danger { background: var(--red-soft); border-color: #f3c2c2; color: var(--red); }
.btn:active { transform: scale(.98); }

.meal-group { margin-bottom: 10px; }
.meal-group h3 {
  margin: 0 0 4px;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--muted);
}
.entry-list, .meal-group ul { list-style: none; margin: 0; padding: 0; }

.entry {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 4px;
  border-bottom: 1px dashed var(--line);
}
.entry:last-child { border-bottom: none; }
.entry .txt { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.entry .txt small { color: var(--muted); }
.entry .kcal { font-weight: 700; color: var(--teal-dark); white-space: nowrap; }
.entry.ex .kcal { color: var(--amber); }
.entry .del {
  border: none;
  background: transparent;
  color: #c5cdcc;
  font-size: 1.1rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 8px;
}
.entry .del:hover { color: var(--red); background: var(--red-soft); }

.empty { color: var(--muted); font-size: .9rem; font-style: italic; padding: 6px 2px; }

#weightChart { width: 100%; height: auto; display: block; }

.hist-item { border-bottom: 1px solid var(--line); }
.hist-item:last-child { border-bottom: none; }
.hist-day {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  gap: 4px 10px;
  padding: 10px 4px;
  align-items: center;
}
.hist-day.clickable { cursor: pointer; }
.hist-day.clickable:hover { background: var(--teal-soft); }
.hist-caret { color: var(--muted); transition: transform .15s; }
.hist-item.open .hist-caret { transform: rotate(90deg); }
.hist-kcal { font-weight: 700; color: var(--teal-dark); font-size: .95rem; }
.hist-kcal.ok { color: var(--green); }
.hist-kcal.over { color: var(--red); }
.hist-sub { display: block; color: var(--muted); font-size: .78rem; }
.hist-detail { display: none; padding: 0 4px 12px 14px; }
.hist-item.open .hist-detail { display: block; }
.hist-date { font-weight: 700; font-size: .9rem; }
.hist-date small { display: block; font-weight: 400; color: var(--muted); }
.hist-nums { text-align: right; font-size: .85rem; color: var(--muted); }
.hist-nums b { color: var(--teal-dark); font-size: .95rem; }
.hist-weight { font-weight: 800; color: var(--teal-dark); font-size: 1rem; }

.profile-form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.profile-form label { display: flex; flex-direction: column; gap: 4px; font-size: .88rem; font-weight: 600; color: var(--muted); }
.profile-form .btn { grid-column: 1 / -1; }
.profile-form input, .profile-form select {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 1rem;
  color: var(--ink);
}
.hint { font-size: .8rem; font-weight: 400; color: var(--muted); }
.profile-summary {
  margin-top: 14px;
  padding: 12px;
  background: var(--teal-soft);
  border-radius: 10px;
  font-size: .92rem;
  display: none;
}
.profile-summary.show { display: block; }
.profile-summary b { color: var(--teal-dark); }

.data-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }

.sync-form { display: flex; flex-direction: column; gap: 8px; margin: 8px 0; }
.sync-form label { display: flex; flex-direction: column; gap: 4px; font-size: .88rem; font-weight: 600; color: var(--muted); }
.sync-form input {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 1rem;
  color: var(--ink);
}
.sync-btn[disabled] { opacity: .6; pointer-events: none; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(80px);
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: .9rem;
  opacity: 0;
  transition: all .25s ease;
  pointer-events: none;
  z-index: 50;
  max-width: 90vw;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

@media (max-width: 420px) {
  .add-form { grid-template-columns: 1fr 1fr; }
  .summary-grid { gap: 4px; }
  .sum-num { font-size: 1.3rem; }
  .tabs .tab { font-size: .8rem; padding: 9px 2px; }
}

@media (min-width: 640px) {
  .add-form { grid-template-columns: 130px 1fr 100px 80px; }
  .add-form .food-search { grid-column: auto; }
  #exForm input[type="text"] { grid-column: auto; }
  #exForm { grid-template-columns: 1fr 90px 110px 110px; }
}

#mealQty { text-align: center; }

.tip-group { margin-bottom: 6px; }
.tip-group h3 {
  margin: 10px 0 4px;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--muted);
}
.tip-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 2px;
  border-bottom: 1px dashed var(--line);
}
.tip-row:last-child { border-bottom: none; }
.tip-txt { flex: 1; min-width: 0; }
.tip-txt b { font-size: .95rem; }
.tip-txt small { display: block; color: var(--muted); font-size: .78rem; }

.suggest {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 10px 24px rgba(0,0,0,.16);
  z-index: 30;
  max-height: 300px;
  overflow-y: auto;
}
.sug-item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  width: 100%;
  padding: 9px 12px;
  border: none;
  background: transparent;
  font-size: .92rem;
  color: var(--ink);
  text-align: left;
  cursor: pointer;
  border-bottom: 1px solid var(--line);
}
.sug-item:last-child { border-bottom: none; }
.sug-item:hover, .sug-item:active { background: var(--teal-soft); }
.sug-item .sug-name { flex: 1; min-width: 0; }
.sug-item .sug-cat { color: var(--muted); font-size: .72rem; }
.sug-item .sug-k { color: var(--teal-dark); font-weight: 700; white-space: nowrap; }

.water-card h2 { display: flex; justify-content: space-between; align-items: center; }
.water-count { font-size: .9rem; color: var(--muted); font-weight: 700; }
.water-row { display: flex; flex-wrap: wrap; gap: 8px; }
.glass {
  width: 36px;
  height: 46px;
  border: 2px solid #93c5fd;
  border-radius: 5px 5px 13px 13px;
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: background .15s, border-color .15s, transform .1s;
}
.glass:active { transform: scale(.9); }
.glass.filled {
  border-color: #3b82f6;
  background: linear-gradient(180deg, #7dd3fc 0%, #3b82f6 100%);
}

.food-add {
  display: grid;
  grid-template-columns: 1fr 90px 130px auto;
  gap: 8px;
  margin-bottom: 10px;
}
.food-add input, .food-add select {
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  min-width: 0;
  font-size: .95rem;
}
#foodSearch {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: .95rem;
  margin-bottom: 12px;
}
.food-cat h3 {
  margin: 12px 0 4px;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .6px;
  color: var(--muted);
}
.food-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 2px;
  border-bottom: 1px dashed var(--line);
}
.food-row .f-name { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.food-row .f-k { font-weight: 700; color: var(--teal-dark); white-space: nowrap; }
.f-act {
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: .95rem;
  padding: 4px 6px;
  border-radius: 8px;
  color: #9fb3b1;
}
.f-act:hover { background: var(--teal-soft); color: var(--teal-dark); }
.f-act.del:hover { background: var(--red-soft); color: var(--red); }
.food-edit {
  display: grid;
  grid-template-columns: 1fr 90px auto auto;
  gap: 8px;
  padding: 6px 2px;
  border-bottom: 1px dashed var(--line);
}
.food-edit input {
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-width: 0;
}

@media (max-width: 480px) {
  .food-add { grid-template-columns: 1fr 90px; }
  .food-add select { grid-column: 1 / -1; }
  .food-add .btn { grid-column: 1 / -1; }
}