:root {
  color-scheme: light;
  --bg: #fff7ed;
  --ink: #1f2937;
  --muted: #64748b;
  --panel: rgba(255, 255, 255, 0.84);
  --line: rgba(15, 23, 42, 0.12);
  --primary: #0f766e;
  --primary-dark: #115e59;
  --bar: #0f766e;
  --indulgence: #71717a;
  --excess: #f97316;
  --warning: #ef4444;
  --shadow: 0 18px 42px rgba(31, 41, 55, 0.16);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(20, 184, 166, 0.22), transparent 32rem),
    linear-gradient(160deg, #fff7ed 0%, #ecfeff 54%, #fef3c7 100%);
  color: var(--ink);
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  max-width: 540px;
  margin: 0 auto;
  padding: max(16px, env(safe-area-inset-top)) 16px max(116px, calc(env(safe-area-inset-bottom) + 96px));
  position: relative;
}

.topbar {
  display: grid;
  gap: 3px;
  justify-items: center;
  padding: 10px 0 14px;
  text-align: center;
}

.topbar h1,
.date-row h2,
.date-row p,
.view-heading h2,
.section-heading h3 {
  margin: 0;
}

.topbar h1 {
  font-size: 1.55rem;
  line-height: 1.1;
}

.version-label {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.round-button {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.08);
  color: var(--ink);
}

.round-button {
  font-size: 1.8rem;
  line-height: 0;
}

.date-chip,
.ghost-button,
.primary-button,
.danger-button {
  border: 0;
  border-radius: 999px;
  min-height: 42px;
  padding: 0 16px;
  font-weight: 800;
}

.date-chip,
.ghost-button {
  background: rgba(255, 255, 255, 0.86);
  color: var(--primary-dark);
  border: 1px solid rgba(15, 118, 110, 0.2);
}

.primary-button {
  background: var(--primary);
  color: #fff;
}

.danger-button {
  background: #fee2e2;
  color: #b91c1c;
}

.bottom-nav {
  position: fixed;
  left: 50%;
  bottom: max(12px, env(safe-area-inset-bottom));
  z-index: 8;
  width: min(508px, calc(100vw - 24px));
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.bottom-nav button {
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  background: #f8fafc;
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 900;
  padding: 4px 4px;
}

.bottom-nav button.active {
  background: #ccfbf1;
  color: var(--primary-dark);
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.date-row,
.view-heading,
.section-heading,
.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.date-row {
  margin: 6px 0 18px;
  text-align: center;
}

.date-row h2,
.view-heading h2 {
  font-size: 1.25rem;
}

.date-row p {
  color: var(--muted);
}

.date-row > div {
  display: grid;
  gap: 7px;
  justify-items: center;
}

.date-picker {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.86);
  color: var(--ink);
  padding: 0 12px;
  font-weight: 800;
}

.progress-list,
.meal-list,
.copy-list,
.guide-list,
.week-summary,
.meal-form {
  display: grid;
  gap: 12px;
}

.progress-card,
.meal-card,
.copy-card,
.guide-card,
.week-card,
.field {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.progress-card {
  padding: 14px;
}

.progress-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
}

.progress-title {
  font-weight: 900;
}

.progress-score {
  color: var(--muted);
  font-weight: 900;
  white-space: nowrap;
}

.bar {
  height: 16px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.22);
  overflow: hidden;
  display: flex;
}

.bar-fill,
.bar-extra {
  min-width: 0;
  transition: width 180ms ease;
}

.meal-panel {
  margin-top: 18px;
}

.section-heading {
  margin-bottom: 10px;
}

.meal-card,
.copy-card,
.guide-card,
.week-card {
  padding: 14px;
}

.meal-card {
  display: grid;
  gap: 10px;
  border-left: 5px solid var(--primary);
}

.meal-card button,
.copy-card button {
  border: 0;
  background: transparent;
  padding: 0;
  color: inherit;
  text-align: left;
}

.meal-title-row,
.copy-title-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.meal-title,
.copy-title {
  font-weight: 900;
}

.meal-date,
.meal-units,
.copy-units,
.guide-card p,
.week-card p {
  color: var(--muted);
  margin: 0;
}

.meal-units,
.copy-units {
  font-size: 0.92rem;
}

.meal-form {
  margin-top: 14px;
}

.field {
  display: grid;
  gap: 8px;
  padding: 12px;
}

.field span {
  font-weight: 900;
}

.field input,
.search-input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 46px;
  padding: 0 12px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--ink);
}

.number-row {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: 10px;
}

.step-button {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 50%;
  background: #ccfbf1;
  color: var(--primary-dark);
  font-size: 1.35rem;
  font-weight: 900;
}

.number-row input {
  text-align: center;
  font-weight: 900;
}

.search-input {
  margin: 12px 0;
}

.guide-card h3,
.week-card h3 {
  margin: 0 0 8px;
}

.transfer-panel {
  display: grid;
  gap: 12px;
  margin-top: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.transfer-panel button {
  width: 100%;
}

.transfer-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.fab {
  position: fixed;
  left: 50%;
  bottom: max(86px, calc(env(safe-area-inset-bottom) + 76px));
  transform: translateX(-50%);
  width: 64px;
  height: 64px;
  border: 0;
  border-radius: 50%;
  background: linear-gradient(135deg, #0f766e, #14b8a6);
  color: #fff;
  box-shadow: 0 18px 38px rgba(15, 118, 110, 0.34);
  font-size: 2.2rem;
  line-height: 1;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: max(98px, calc(env(safe-area-inset-bottom) + 84px));
  transform: translateX(-50%) translateY(16px);
  opacity: 0;
  pointer-events: none;
  background: #0f172a;
  color: #fff;
  padding: 10px 14px;
  border-radius: 999px;
  transition: opacity 160ms ease, transform 160ms ease;
  box-shadow: var(--shadow);
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

@media (min-width: 720px) {
  .app-shell {
    padding-top: 28px;
  }
}

/* metadata: GPT-5 Codex; time: 2026-06-28 00:00 Australia/Sydney; date: 2026-06-28; prompt: Create a local-first PWA app called "CSIRO Diet Tracker" for iPhone with daily category tracking, meal editing/copying, 7-day summary, unit guide, and CSV export. */

/* metadata: GPT-5 Codex; time: 2026-06-28 10:35 Australia/Sydney; date: 2026-06-28; prompt: Remove CSIRO wording, move menu to bottom, standardize progress colours, add date picker/today navigation, let CSV export choose save location, and make 7-day totals end at selected day. */
/* metadata: GPT-5 Codex; time: 2026-06-28 10:39 Australia/Sydney; date: 2026-06-28; prompt: Clean literal newline markers introduced by scripted edits and tidy stale CSS selector after requested Diet Tracker UI changes. */
/* metadata: GPT-5 Codex; time: 2026-06-28 10:42 Australia/Sydney; date: 2026-06-28; prompt: Remove final literal escaped newline marker from Diet Tracker stylesheet after requested UI changes. */

/* metadata: GPT-5 Codex; time: 2026-06-29 09:20 Australia/Sydney; date: 2026-06-29; prompt: Add a version number and change Export CSV to Import/Export with CSV export plus versioned JSON save/load. */
/* metadata: GPT-5 Codex; time: 2026-06-29 09:24 Australia/Sydney; date: 2026-06-29; prompt: Clean literal escaped newline markers after adding versioned JSON import/export. */