:root {
  --ink:#1a1a16; --ink2:#3d3d34; --ink3:#7a7a6e; --ink4:#b5b5a8;
  --paper:#f7f6f0; --paper2:#eeeee4; --paper3:#e4e4d8;
  --white:#fff; --border:rgba(26,26,22,.10); --border2:rgba(26,26,22,.18);
  --grain-h:#d4a24c; --grain-bg:#fdf3e0; --grain-soft:#f5dfa0;
  --prot-h:#b05a5a;  --prot-bg:#fdeeed;
  --veg-h:#4a9464;   --veg-bg:#edf7f1;
  --fat-h:#7a5ab0;   --fat-bg:#f3edf7;
  --topbar-h:56px;
  --bnav-h:60px;
  --left-panel-w:540px;
  --radius:14px; --radius-sm:8px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', 'Noto Sans TC', sans-serif;
  background: var(--paper); color: var(--ink);
  min-height: 100vh; display: flex; flex-direction: column;
}

/* ── TOPBAR ─────────────────────────────────────────── */
#topbar {
  position: sticky; top: 0; z-index: 200;
  background: var(--ink); color: var(--paper);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; height: var(--topbar-h); gap: 12px; flex-shrink: 0;
}
.logo { font-family: 'Noto Serif TC', serif; font-size: 21px; font-weight: 900; letter-spacing: .06em; white-space: nowrap; }
.logo span { color: var(--grain-h); }
.topbar-center { display: flex; align-items: center; gap: 6px; flex: 1; justify-content: center; }
.date-arrow {
  background: none; border: 1px solid rgba(255,255,255,.2); color: var(--paper);
  width: 28px; height: 28px; border-radius: 6px; cursor: pointer; font-size: 17px;
  display: flex; align-items: center; justify-content: center;
}
.date-arrow:hover { background: rgba(255,255,255,.1); }
#dateLabel { font-size: 15px; font-weight: 500; min-width: 140px; text-align: center; border-radius: 6px; padding: 3px 6px; transition: background .15s; }
#dateLabel:hover { background: rgba(255,255,255,.1); }

/* ── 月曆彈出 ── */
#calendarPicker {
  position: absolute;
  top: calc(var(--topbar-h) + 6px);
  left: 50%; transform: translateX(-50%);
  z-index: 500;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 8px 32px rgba(0,0,0,.18);
  padding: 14px 16px 16px;
  width: 280px;
  color: var(--ink);
}
.picker-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.picker-header button {
  background: none; border: 1px solid var(--border); border-radius: 6px;
  width: 30px; height: 30px; cursor: pointer; font-size: 16px; color: var(--ink2);
  display: flex; align-items: center; justify-content: center;
}
.picker-header button:hover { background: var(--bg); }
.picker-month-label { font-size: 15px; font-weight: 700; color: var(--ink1); }
.picker-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 0;
}
.picker-dow {
  font-size: 11px; font-weight: 600; color: var(--ink3);
  text-align: center; padding: 4px 0 6px;
  letter-spacing: .04em;
}
.picker-day {
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; border-radius: 50%;
  cursor: pointer; color: var(--ink2);
  transition: background .1s;
}
.picker-day:hover { background: var(--bg); color: var(--ink1); }
.picker-day.today { font-weight: 700; color: var(--grain-h); }
.picker-day.selected { background: var(--grain-h); color: #fff !important; font-weight: 600; border-radius: 50%; }
.picker-day.other-month { color: var(--ink4, #ccc); }

.picker-year-btn {
  cursor: pointer; border-bottom: 1.5px dashed var(--grain-h);
  padding-bottom: 1px; color: var(--ink1);
}
.picker-year-btn:hover { color: var(--grain-h); }
.picker-year-row {
  display: flex; align-items: center; justify-content: center;
  gap: 24px; padding: 24px 0 16px;
}
.picker-year-arrow {
  background: none; border: 1px solid var(--border); border-radius: 6px;
  width: 36px; height: 36px; cursor: pointer; font-size: 18px; color: var(--ink2);
  display: flex; align-items: center; justify-content: center;
}
.picker-year-arrow:hover { background: var(--bg); }
.picker-year-display {
  font-size: 32px; font-weight: 700; color: var(--grain-h);
  cursor: pointer; min-width: 90px; text-align: center;
}
.picker-year-display:hover { opacity: .8; }
.picker-year-hint {
  text-align: center; font-size: 12px; color: var(--ink3); padding-bottom: 8px;
}
.today-pill {
  background: var(--grain-h); color: var(--ink);
  border: none; border-radius: 20px; padding: 4px 12px;
  font-size: 13px; cursor: pointer; font-weight: 500; font-family: inherit;
}
.topbar-right { display: flex; gap: 5px; }
.view-btn {
  background: none; border: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.65);
  padding: 5px 13px; border-radius: 6px; font-size: 14px; cursor: pointer;
  font-family: inherit; white-space: nowrap; transition: all .15s;
}
.view-btn.active { background: rgba(255,255,255,.15); color: #fff; border-color: rgba(255,255,255,.4); }

/* ── LAYOUT ──────────────────────────────────────────── */
.app {
  display: grid;
  grid-template-columns: var(--left-panel-w) 1fr;
  height: calc(100vh - var(--topbar-h));
  overflow: hidden;
}
.left-panel {
  background: var(--white); border-right: 1px solid var(--border);
  overflow-y: auto; flex-shrink: 0;
}
.main-area {
  overflow-y: auto; padding: 20px;
  display: flex; flex-direction: column; gap: 14px;
}

/* ── LEFT PANEL ──────────────────────────────────────── */
.panel-section { padding: 16px 18px 14px; border-bottom: 1px solid var(--border); position: relative; }
.panel-label { font-size: 12px; font-weight: 500; letter-spacing: .1em; color: var(--ink3); text-transform: uppercase; margin-bottom: 12px; }

.cal-ring-wrap { position: relative; width: 80px; height: 80px; flex-shrink: 0; }
.cal-ring-wrap svg { transform: rotate(-90deg); }
.cal-ring-center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.cal-num { font-size: 18px; font-weight: 500; line-height: 1; }
.cal-unit { font-size: 11px; color: var(--ink3); margin-top: 1px; }
.macro-card { border-radius: var(--radius-sm); padding: 7px 5px; text-align: center; }
.macro-val { font-size: 15px; font-weight: 500; }
.macro-lbl { font-size: 11px; margin-top: 1px; opacity: .75; }
/* cal-row1 已移除，改用 cal-grid 佈局 */
.cal-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: 14px;
  row-gap: 10px;
}
.cal-grid .weight-card {
  grid-row: 1 / 3;
  grid-column: 1;
  justify-content: flex-end;
}
.cal-info {
  grid-row: 1;
  grid-column: 2;
  display: flex;
  align-items: flex-end;
  padding-bottom: 2px;
}
.cal-label-text {
  font-size: 15px;
  font-weight: 500;
  color: var(--ink2);
}
.cal-ring-macro {
  grid-row: 2;
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: 14px;
}
.cal-ring-macro .cal-ring-wrap {
  flex-shrink: 0;
  margin-top: 10px;
}
.cal-row2 {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

/* ── 體重卡 ── */
.weight-card {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 90px;
  flex-shrink: 0;
  border-right: 1px solid var(--border);
  padding-right: 12px;
}
.weight-card-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--ink3);
  text-transform: uppercase;
}
.weight-display {
  font-size: 17px;
  font-weight: 500;
  color: var(--ink1);
  line-height: 1.2;
}
.weight-diff {
  font-size: 12px;
  min-height: 16px;
  color: var(--ink3);
}
.weight-input-row {
  display: flex;
  gap: 4px;
  margin-top: 4px;
}
.weight-input {
  width: 58px;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  font-family: inherit;
  background: var(--bg);
  color: var(--ink1);
  -moz-appearance: textfield;
}
.weight-input::-webkit-outer-spin-button,
.weight-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.weight-save-btn {
  padding: 4px 8px;
  background: var(--grain-h);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
}

.donut-section {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}
.donut-legend {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.donut-leg-row {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}
.donut-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.donut-leg-label {
  flex: 1;
  color: var(--ink2);
}
.donut-leg-val {
  color: var(--ink3);
  font-size: 12px;
  white-space: nowrap;
}
.donut-leg-val.over {
  color: #c0392b;
  font-weight: 600;
}
/* ── DONUT CANVAS WRAP ───────────────────────────────────── */
.donut-canvas-wrap {
  flex-shrink: 0;
}

/* ── DONUT TOOLTIP ───────────────────────────────────────── */
.donut-tooltip {
  position: absolute;
  background: var(--white, #fff);
  border: 1px solid var(--border, #e4e4d8);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
  padding: 10px 12px;
  min-width: 130px;
  max-width: 220px;
  pointer-events: none;
  z-index: 100;
  font-size: 12px;
  line-height: 1.5;
}
.dtt-name {
  font-weight: 600;
  font-size: 13px;
  margin-bottom: 5px;
}
.dtt-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
  flex-wrap: wrap;
}
.dtt-num {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink, #1a1a18);
  line-height: 1;
}
.dtt-num.dtt-over { color: #c0392b; }
.dtt-unit { font-size: 11px; font-weight: 400; }
.dtt-sep, .dtt-target { color: var(--ink3, #aaa); font-size: 12px; }
.dtt-pct { font-size: 11px; color: var(--ink3, #aaa); margin-top: 2px; }
.dtt-k {
  font-weight: 600;
  color: var(--ink2, #666);
  font-size: 11px;
  white-space: nowrap;
}
.dtt-v {
  color: var(--ink, #1a1a18);
  font-size: 11px;
  line-height: 1.5;
}
.dtt-empty { color: var(--ink3, #aaa); font-size: 12px; }

/* ── STATS MICRO NUTRIENTS ───────────────────────────────── */
.stats-micro-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink2, #666);
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border, #e4e4d8);
}
.stats-micro-row {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 13px;
  line-height: 1.5;
}
.stats-micro-k {
  font-weight: 600;
  color: #4a9464;
  flex-shrink: 0;
  min-width: 44px;
}
.stats-micro-v { color: var(--ink, #1a1a18); }

/* ── CONFIG BANNER ───────────────────────────────────── */
.config-banner {
  display: flex; align-items: center; gap: 12px;
  background: var(--grain-bg); border: 1px solid var(--grain-soft);
  border-radius: var(--radius-sm); padding: 10px 14px; font-size: 15px; color: var(--ink2);
}
.config-banner button {
  margin-left: auto; background: var(--grain-h); color: var(--ink);
  border: none; border-radius: 6px; padding: 5px 12px; font-size: 14px;
  cursor: pointer; font-family: inherit; white-space: nowrap;
}

/* ── MEAL CARDS ──────────────────────────────────────── */
.meals-grid { display: flex; flex-direction: column; gap: 12px; }
.meal-card {
  background: var(--white); border-radius: var(--radius);
  border: 1px solid var(--border); overflow: hidden; transition: box-shadow .15s;
}
.meal-card:hover { box-shadow: 0 3px 16px rgba(0,0,0,.06); }
.meal-hd { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; }
.meal-hd-left { display: flex; align-items: center; gap: 10px; }
.meal-emoji { font-size: 19px; width: 28px; text-align: center; }
.meal-meta h3 { font-size: 16px; font-weight: 500; }
.meal-time-lbl { font-size: 13px; color: var(--ink3); margin-top: 1px; }
.meal-add-btn {
  padding: 5px 13px; border: 1px dashed var(--border2); border-radius: 7px;
  background: none; font-size: 14px; cursor: pointer; color: var(--ink3);
  font-family: inherit; transition: all .12s; white-space: nowrap;
}
.meal-add-btn:hover { border-color: var(--grain-h); color: var(--grain-h); background: var(--grain-bg); }
.meal-body { border-top: 1px solid var(--border); padding: 0 16px 10px; }
.food-list { display: flex; flex-direction: column; gap: 1px; padding-top: 6px; }
.food-row { display: flex; align-items: center; gap: 8px; padding: 7px 8px; border-radius: 8px; transition: background .1s; }
.food-row:hover { background: var(--paper); }
.food-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.food-name { flex: 1; font-size: 15px; font-weight: 500; min-width: 0; }
.food-macros { display: flex; gap: 6px; font-size: 13px; color: var(--ink3); flex-shrink: 0; }
.food-macros b { font-size: 14px; font-weight: 500; color: var(--ink2); }
.food-edit { background: none; border: none; cursor: pointer; color: var(--ink4); font-size: 15px; padding: 0 3px; transition: color .1s; flex-shrink: 0; line-height: 1; }
.food-edit:hover { color: var(--grain-h); }
.food-del { background: none; border: none; cursor: pointer; color: var(--ink4); font-size: 18px; padding: 0 3px; transition: color .1s; flex-shrink: 0; line-height: 1; }
.food-del:hover { color: var(--prot-h); }
.meal-empty { font-size: 14px; color: var(--ink4); padding: 10px 0 4px; }

/* ── CONTENT CARDS ───────────────────────────────────── */
.content-card { background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); padding: 20px; }
.content-card-title { font-family: 'Noto Serif TC', serif; font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.toggle-btn {
  padding: 7px 18px; border: 1.5px solid var(--border2); border-radius: 20px;
  background: none; font-size: 14px; cursor: pointer; color: var(--ink3);
  font-family: inherit; transition: all .15s;
}
.toggle-btn.active { background: var(--ink); color: #fff; border-color: var(--ink); }

/* ── SETTINGS ────────────────────────────────────────── */
.settings-form { display: flex; flex-direction: column; gap: 12px; }
.sf-row { display: flex; flex-direction: column; gap: 4px; }
.sf-row label { font-size: 13px; color: var(--ink3); font-weight: 500; }
.sf-row label small { font-size: 12px; color: var(--ink4); }
.sf-row input, .sf-row select {
  padding: 8px 11px; border: 1px solid var(--border2); border-radius: var(--radius-sm);
  font-size: 15px; font-family: inherit; background: var(--paper); color: var(--ink);
}
.sf-row input:focus, .sf-row select:focus { outline: none; border-color: var(--grain-h); }
.saved-tip { font-size: 14px; color: var(--veg-h); font-weight: 500; opacity: 0; transition: opacity .3s; height: 16px; }
.saved-tip.show { opacity: 1; }
.settings-note { font-size: 14px; color: var(--ink3); line-height: 1.8; background: var(--paper2); border-radius: var(--radius-sm); padding: 12px 14px; border: 1px solid var(--border); }
.feedback-btn {
  display: inline-block;
  padding: 8px 18px;
  background: var(--grain-h);
  color: #fff;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  transition: opacity .15s;
}
.feedback-btn:hover { opacity: .85; }

/* ── VIEWS ───────────────────────────────────────────── */
.view { display: none; }
.view.active { display: flex; flex-direction: column; gap: 14px; }

/* ── MODAL ───────────────────────────────────────────── */
.moverlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 300;
  display: flex; align-items: flex-end; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.moverlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--white); border-radius: 18px 18px 0 0;
  width: 100%; max-width: 520px; max-height: 92vh;
  display: flex; flex-direction: column;
  transform: translateY(20px); transition: transform .25s;
}
.moverlay.open .modal { transform: translateY(0); }

/* Desktop: center modal */
@media (min-width: 600px) {
  .moverlay { align-items: center; }
  .modal { border-radius: 18px; max-height: 88vh; }
}

.modal-hd {
  padding: 18px 20px 14px; display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.modal-hd h3 { font-family: 'Noto Serif TC', serif; font-size: 18px; }
.modal-x { background: none; border: none; cursor: pointer; font-size: 20px; color: var(--ink3); padding: 2px 4px; }
.modal-scroll { overflow-y: auto; flex: 1; }

.modal-photo-zone {
  margin: 12px 20px 0; border: 1.5px dashed var(--border2); border-radius: 10px;
  padding: 14px; text-align: center; cursor: pointer; transition: all .15s;
  background: var(--paper); position: relative;
}
.modal-photo-zone:hover { border-color: var(--grain-h); background: var(--grain-bg); }
.modal-photo-zone input[type=file] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.photo-zone-icon { font-size: 24px; margin-bottom: 4px; }
.photo-zone-txt { font-size: 14px; color: var(--ink3); }
.photo-zone-txt b { color: var(--grain-h); }
.photo-thumb { width: 100%; max-height: 130px; object-fit: cover; border-radius: 8px; margin-top: 8px; display: none; }

.food-desc-inp {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border2);
  border-radius: var(--radius-sm); font-size: 15px; font-family: inherit;
  background: var(--paper); color: var(--ink); resize: none; min-height: 68px; margin-bottom: 8px;
}
.food-desc-inp:focus { outline: none; border-color: var(--grain-h); }
.example-chips { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 4px; }
.ex-chip {
  padding: 4px 10px; border: 1px solid var(--border2); border-radius: 20px;
  font-size: 13px; cursor: pointer; color: var(--ink3); background: none; font-family: inherit; transition: all .12s;
}
.ex-chip:hover { background: var(--grain-bg); color: var(--grain-h); border-color: var(--grain-soft); }

.analyze-btn {
  width: 100%; padding: 11px; background: var(--ink); color: var(--paper);
  border: none; border-radius: 10px; font-size: 16px; font-weight: 500;
  cursor: pointer; font-family: inherit; transition: background .15s;
}
.analyze-btn:hover { background: var(--ink2); }
.analyze-btn:disabled { background: var(--ink4); cursor: not-allowed; }

.result-label { font-size: 12px; font-weight: 500; letter-spacing: .1em; color: var(--grain-h); text-transform: uppercase; margin-bottom: 10px; }
.result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 8px; }
.result-full { grid-column: 1/-1; }
.result-grid label { font-size: 13px; color: var(--ink3); display: block; margin-bottom: 3px; }
.result-grid input {
  width: 100%; padding: 7px 10px; border: 1px solid var(--border2);
  border-radius: var(--radius-sm); font-size: 15px; font-family: inherit; background: var(--paper); color: var(--ink);
}
.result-grid input:focus { outline: none; border-color: var(--grain-h); }

.modal-footer { display: flex; gap: 8px; padding: 12px 20px; border-top: 1px solid var(--border); flex-shrink: 0; }
.modal-manual-btn {
  flex: 0; padding: 10px 14px; background: none; border: 1px solid var(--border2);
  border-radius: 9px; font-size: 14px; cursor: pointer; font-family: inherit; color: var(--ink3); white-space: nowrap;
}
.modal-manual-btn:hover { border-color: var(--grain-h); color: var(--grain-h); }
.modal-save-btn {
  flex: 1; padding: 10px; background: var(--grain-h); color: var(--ink);
  border: none; border-radius: 9px; font-size: 15px; font-weight: 500; cursor: pointer; font-family: inherit;
}
.modal-save-btn:hover { background: #c4922a; }
.modal-save-btn:disabled { background: var(--ink4); cursor: not-allowed; }

.err-box { background: var(--prot-bg); color: var(--prot-h); border-radius: var(--radius-sm); padding: 8px 12px; font-size: 14px; }

/* ── TOAST ───────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%) translateY(10px);
  z-index: 400; background: var(--ink); color: var(--paper);
  padding: 10px 20px; border-radius: 20px; font-size: 15px;
  opacity: 0; transition: all .25s; pointer-events: none; white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
@media (min-width: 700px) {
  .toast { bottom: 20px; left: auto; right: 20px; transform: translateY(8px); border-radius: 9px; }
  .toast.show { transform: translateY(0); }
}

/* ── MOBILE BOTTOM NAV ───────────────────────────────── */
.bottom-nav {
  display: none;
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--white); border-top: 1px solid var(--border);
  z-index: 100; height: var(--bnav-h);
}
.bnav-btn {
  flex: 1; border: none; background: none; font-size: 13px; color: var(--ink3);
  cursor: pointer; font-family: inherit; padding: 8px 0; line-height: 1.4;
  display: flex; flex-direction: column; align-items: center; gap: 2px; transition: color .15s;
}
.bnav-btn span { font-size: 13px; }
.bnav-btn.active { color: var(--grain-h); font-weight: 600; }

/* ── RESPONSIVE ──────────────────────────────────────── */

/* Tablet: hide left panel */
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .left-panel { display: none; }
  /* 手機版：摘要 tab 啟用時顯示 left-panel、隱藏 meals-grid */
  body.mobile-summary .left-panel {
    display: block;
    overflow-y: auto;
    padding: 16px;
  }
  body.mobile-summary #mealsGrid { display: none; }
  body.mobile-summary #mobileRecordTabs { display: flex; }
}

/* 手機版摘要/紀錄 tab 列 */
.mobile-record-tabs {
  display: none; /* 桌面版隱藏 */
}
@media (max-width: 900px) {
  .mobile-record-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 12px;
    background: var(--bg2, #f0ede4);
    border-radius: 10px;
    padding: 3px;
  }
  .mob-tab {
    flex: 1;
    padding: 7px 0;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--ink3);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
  }
  .mob-tab.active {
    background: #fff;
    color: var(--ink);
    font-weight: 600;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
  }
}

/* Mobile: show bottom nav, shrink topbar */
@media (max-width: 600px) {
  :root { --bnav-h: 58px; }
  .app { height: calc(100vh - var(--topbar-h) - var(--bnav-h)); }
  .bottom-nav { display: flex; }
  .topbar-right { display: none; }
  .topbar-center { justify-content: center; }
  #dateLabel { min-width: 110px; font-size: 14px; }
  .main-area { padding: 14px 12px; }
  .meal-card { border-radius: 10px; }
  .food-macros { display: none; }
  .content-card { padding: 16px; }
}

/* Very small phones */
@media (max-width: 380px) {
  #dateLabel { min-width: 90px; font-size: 13px; }
  .logo { font-size: 18px; }
}

/* ── Login Overlay ─────────────────────────────────────────── */
#loginOverlay {
  position: fixed; inset: 0; z-index: 9999;
  background: #f5f0e8;
  display: flex; align-items: center; justify-content: center;
}
.login-card {
  background: #fff; border-radius: 16px; padding: 40px 32px;
  width: 100%; max-width: 380px; box-shadow: 0 8px 32px rgba(0,0,0,.1);
  display: flex; flex-direction: column; gap: 12px;
}
.login-logo {
  font-family: 'Noto Serif TC', serif; font-size: 30px; font-weight: 900;
  color: #3a3020; text-align: center; margin-bottom: 8px;
}
.login-logo span { color: #d4a24c; }
.login-input {
  width: 100%; padding: 10px 14px; border: 1.5px solid #ddd; border-radius: 8px;
  font-size: 17px; outline: none; box-sizing: border-box;
}
.login-input:focus { border-color: #d4a24c; }
.login-btn-primary {
  width: 100%; padding: 11px; background: #d4a24c; color: #fff;
  border: none; border-radius: 8px; font-size: 17px; font-weight: 600; cursor: pointer;
}
.login-btn-primary:hover { background: #c4923c; }
.login-btn-secondary {
  width: 100%; padding: 10px; background: transparent; color: #666;
  border: 1.5px solid #ddd; border-radius: 8px; font-size: 16px; cursor: pointer;
}
.login-btn-secondary:hover { border-color: #aaa; }
.login-btn-oauth {
  width: 100%; padding: 10px; background: #f8f6f0; color: #333;
  border: 1.5px solid #ddd; border-radius: 8px; font-size: 16px; cursor: pointer;
}
.login-btn-oauth:hover { background: #ede8dc; }
.login-btn-text {
  background: none; border: none; color: #aaa; font-size: 14px;
  cursor: pointer; padding: 4px 0; text-decoration: underline;
}
.login-btn-text:hover { color: #888; }
.login-subtitle { color: #888; font-size: 14px; text-align: center; margin-bottom: 4px; }
.login-divider { text-align: center; color: #aaa; font-size: 15px; margin: 4px 0; }
.login-error { color: #c0392b; font-size: 15px; min-height: 18px; text-align: center; }

/* ── API Key 管理按鈕 ─────────────────────────────────────── */
.btn-sm {
  padding: 5px 10px; border-radius: 6px; font-size: 14px;
  border: 1.5px solid #ddd; background: #fff; cursor: pointer; white-space: nowrap;
  margin-left: 4px;
}
.btn-sm:hover { background: #f5f0e8; }
.btn-danger { border-color: #e0a0a0; color: #c0392b; }
.btn-danger:hover { background: #fdf0f0; }

/* ── Export Button ─────────────────────────────────────────── */
.export-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--ink2);
  cursor: pointer;
  transition: background 0.15s;
  margin-left: 4px;
}
.export-btn:hover {
  background: rgba(0,0,0,0.08);
}

/* ── Modal Overlay Base ─────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-box {
  background: #fff;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.18);
}
.export-modal-box .modal-hd {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 16px;
}
.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--ink3);
  cursor: pointer;
  line-height: 1;
  padding: 2px 4px;
}
.modal-close:hover { color: var(--ink); }

/* ── Export Modal ─────────────────────────────────────────── */
.export-modal-box {
  width: 360px;
  max-width: 95vw;
}
.export-section-label {
  font-size: 13px;
  color: var(--ink3);
  margin-bottom: 8px;
  margin-top: 16px;
}
.export-section-label:first-of-type {
  margin-top: 0;
}
.export-quick-btns {
  display: flex;
  gap: 8px;
}
.export-quick-btn {
  flex: 1;
  padding: 8px 0;
  border: 1.5px solid var(--ink4, #ddd);
  border-radius: 8px;
  background: #fff;
  color: var(--ink2);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.export-quick-btn.active,
.export-quick-btn:hover {
  border-color: var(--grain-h, #d4a24c);
  background: var(--grain-bg, #fdf6e8);
  color: var(--grain-h, #d4a24c);
  font-weight: 600;
}
.export-date-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--ink2);
}
.export-date-input {
  border: 1.5px solid var(--ink4, #ddd);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 14px;
  color: var(--ink2);
  flex: 1;
  min-width: 0;
  box-sizing: border-box;
}
.export-field-hint {
  margin-top: 14px;
  font-size: 12px;
  color: var(--ink3);
  line-height: 1.6;
  background: var(--bg2, #f8f7f2);
  border-radius: 6px;
  padding: 8px 10px;
}
.export-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}
.export-cancel-btn {
  padding: 8px 18px;
  border: 1.5px solid var(--ink4, #ddd);
  border-radius: 8px;
  background: #fff;
  color: var(--ink2);
  font-size: 14px;
  cursor: pointer;
}
.export-confirm-btn {
  padding: 8px 20px;
  border: none;
  border-radius: 8px;
  background: var(--grain-h, #d4a24c);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
.export-confirm-btn:hover { opacity: 0.88; }