:root {
  color-scheme: light;
  --ink: #1b2328;
  --muted: #69757d;
  --line: #dce5e8;
  --paper: #f7faf9;
  --panel: #ffffff;
  --green: #18735d;
  --green-soft: #dff4ec;
  --red: #bd3a3a;
  --red-soft: #fae3df;
  --blue: #306b9f;
  --coral: #d36a4b;
  --health-bg: #f2f6f4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.45;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
}

.site-header {
  align-items: center;
  background: rgba(247, 250, 249, 0.94);
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, auto) 1fr auto auto;
  min-height: 66px;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brandmark {
  align-items: center;
  display: inline-flex;
  gap: 10px;
  font-weight: 900;
  justify-self: start;
  min-height: 44px;
  text-decoration: none;
}

.brand-icon {
  align-items: center;
  background: var(--green);
  border-radius: 8px;
  color: white;
  display: inline-flex;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.range-control button,
.stack-form button,
.profile-grid button {
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  min-height: 40px;
  padding: 0 14px;
  text-decoration: none;
}

.range-control button.selected {
  background: var(--green);
  color: white;
}

button {
  background: var(--panel);
  cursor: pointer;
}

button:disabled {
  cursor: wait;
  opacity: 0.72;
}

.header-menu {
  justify-self: end;
  position: relative;
}

.header-menu-button {
  align-items: center;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  cursor: pointer;
  display: inline-flex;
  font-size: 14px;
  font-weight: 900;
  gap: 8px;
  list-style: none;
  min-height: 40px;
  padding: 0 12px;
  white-space: nowrap;
}

.language-menu .header-menu-button {
  min-width: 74px;
  justify-content: space-between;
}

.header-menu-button::-webkit-details-marker {
  display: none;
}

.header-menu-button::after {
  color: var(--muted);
  content: "▾";
  font-size: 12px;
  line-height: 1;
}

.header-menu[open] .header-menu-button::after {
  transform: rotate(180deg);
}

.header-menu-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 14px 32px rgba(27, 35, 40, 0.14);
  display: grid;
  gap: 4px;
  min-width: 150px;
  padding: 6px;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 20;
}

.language-menu .header-menu-panel {
  min-width: 74px;
}

.header-menu-panel form {
  display: grid;
  gap: 4px;
}

.header-menu-panel a,
.header-menu-panel button {
  align-items: center;
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: var(--ink);
  display: flex;
  font-size: 14px;
  font-weight: 850;
  min-height: 36px;
  padding: 0 10px;
  text-align: left;
  text-decoration: none;
  width: 100%;
}

.header-menu-panel a:hover,
.header-menu-panel a.active,
.header-menu-panel button:hover,
.header-menu-panel button.active {
  background: var(--health-bg);
}

.page-shell {
  margin: 0 auto;
  max-width: 1180px;
  padding: 36px 24px 72px;
}

.toolbar {
  align-items: end;
  display: flex;
  gap: 20px;
  justify-content: space-between;
  margin-bottom: 22px;
}

.eyebrow {
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  margin: 0 0 6px;
  text-transform: uppercase;
}

h1,
h2 {
  letter-spacing: 0;
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(32px, 5vw, 56px);
}

h2 {
  font-size: 22px;
}

.range-control {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.metric-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 18px;
}

.metric,
.balance-card,
.chart-section,
.calendar-section,
.result-panel,
.login-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
}

.metric {
  padding: 18px 18px 16px;
}

.metric span,
.metric small,
.muted {
  color: var(--muted);
}

.metric span {
  align-items: center;
  display: flex;
  font-size: 14px;
  font-weight: 850;
  gap: 8px;
}

.metric-icon {
  align-items: center;
  border-radius: 999px;
  display: inline-flex;
  font-style: normal;
  height: 28px;
  justify-content: center;
  line-height: 1;
  width: 28px;
}

.metric-icon.food {
  background: rgba(211, 106, 75, 0.13);
}

.metric-icon.burned,
.metric-icon.deficit {
  background: rgba(24, 115, 93, 0.13);
}

.metric-icon.activity {
  background: rgba(48, 107, 159, 0.13);
}

.metric strong {
  display: block;
  font-size: 34px;
  letter-spacing: 0;
  line-height: 1.1;
  margin: 7px 0 3px;
}

.metric small {
  display: block;
  font-size: 13px;
  min-height: 19px;
}

.metric.positive strong {
  color: var(--green);
}

.metric.negative strong {
  color: var(--red);
}

.balance-card {
  display: grid;
  gap: 18px;
  margin-bottom: 18px;
  padding: 20px 22px;
}

.balance-head {
  align-items: center;
  display: flex;
  gap: 18px;
  justify-content: space-between;
}

.balance-result {
  border-left: 1px solid var(--line);
  min-width: 142px;
  padding-left: 18px;
  text-align: right;
}

.balance-result span,
.balance-result small {
  color: var(--muted);
  display: block;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.balance-result strong {
  display: block;
  font-size: 32px;
  letter-spacing: 0;
  line-height: 1;
  margin: 5px 0 2px;
}

.balance-card.positive .balance-result strong {
  color: var(--green);
}

.balance-card.negative .balance-result strong {
  color: var(--red);
}

.balance-bars {
  display: grid;
  gap: 14px;
}

.balance-row {
  display: grid;
  gap: 8px;
}

.balance-label,
.balance-breakdown {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.balance-label span {
  align-items: center;
  color: var(--muted);
  display: inline-flex;
  font-size: 14px;
  font-weight: 900;
  gap: 8px;
}

.balance-label strong {
  font-size: 14px;
  white-space: nowrap;
}

.balance-emoji {
  align-items: center;
  background: var(--health-bg);
  border-radius: 999px;
  display: inline-flex;
  font-style: normal;
  height: 28px;
  justify-content: center;
  line-height: 1;
  width: 28px;
}

.balance-track {
  background: #edf3f1;
  border-radius: 999px;
  height: 16px;
  overflow: hidden;
  position: relative;
}

.balance-fill {
  display: block;
  height: 100%;
}

.balance-fill.food {
  background: var(--coral);
  border-radius: 999px;
}

.balance-track.stacked {
  display: flex;
}

.balance-fill.basal {
  background: var(--green);
}

.balance-fill.activity {
  background: var(--blue);
}

.balance-track.stacked .balance-fill:first-child {
  border-radius: 999px 0 0 999px;
}

.balance-track.stacked .balance-fill:last-child {
  border-radius: 0 999px 999px 0;
}

.balance-breakdown {
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
  justify-content: flex-start;
}

.balance-breakdown span {
  align-items: center;
  display: inline-flex;
  gap: 7px;
}

.chart-section,
.calendar-section {
  margin-top: 18px;
  padding: 22px;
}

.section-heading {
  align-items: center;
  display: flex;
  gap: 18px;
  justify-content: space-between;
  margin-bottom: 14px;
}

.section-heading > div {
  min-width: 0;
}

.section-subtitle {
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
  margin: 5px 0 0;
}

.section-heading a {
  color: var(--green);
  font-size: 14px;
  font-weight: 900;
  text-decoration: none;
}

.chart-wrap {
  height: 318px;
  width: 100%;
}

.chart-wrap.compact {
  height: 238px;
}

.svg-chart {
  background: var(--health-bg);
  border: 1px solid rgba(220, 229, 232, 0.7);
  border-radius: 13px;
  height: 100%;
  overflow: visible;
  position: relative;
  touch-action: pan-y;
  width: 100%;
}

.chart-svg {
  display: block;
  height: 100%;
  width: 100%;
}

.chart-grid-line {
  stroke: var(--line);
  stroke-width: 1;
}

.health-grid-line {
  stroke: rgba(105, 117, 125, 0.18);
  stroke-width: 1;
}

.health-zero-line {
  stroke: rgba(27, 35, 40, 0.22);
  stroke-dasharray: 4 5;
  stroke-width: 1.5;
}

.health-empty-tick {
  stroke: rgba(105, 117, 125, 0.34);
  stroke-linecap: round;
  stroke-width: 3;
}

.health-line {
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 4;
}

.health-line-food {
  opacity: 0.92;
}

.health-line-burned {
  opacity: 0.88;
}

.health-bar {
  transition: opacity 140ms ease, filter 140ms ease;
}

.health-bar.is-active {
  filter: saturate(1.18);
  opacity: 1;
}

.health-dot {
  stroke: white;
  stroke-width: 2;
  transition: r 140ms ease, stroke-width 140ms ease;
}

.health-dot.is-active {
  r: 7px;
  stroke-width: 3;
}

.chart-tooltip {
  background: rgba(27, 35, 40, 0.94);
  border-radius: 10px;
  box-shadow: 0 12px 30px rgba(27, 35, 40, 0.2);
  color: white;
  display: grid;
  font-size: 12px;
  font-weight: 750;
  gap: 5px;
  min-width: 158px;
  padding: 10px 11px;
  pointer-events: none;
  position: absolute;
  transform: translate(-50%, -100%);
  z-index: 3;
}

.chart-tooltip.below {
  transform: translate(-50%, 0);
}

.chart-tooltip[hidden] {
  display: none;
}

.chart-tooltip strong {
  font-size: 12px;
}

.chart-tooltip span {
  align-items: center;
  display: flex;
  gap: 7px;
  white-space: nowrap;
}

.chart-tooltip i {
  border-radius: 999px;
  display: inline-block;
  height: 8px;
  width: 8px;
}

.chart-axis-label,
.chart-x-label {
  fill: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.chart-x-label {
  text-anchor: middle;
}

.empty-chart {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 14px;
  font-weight: 800;
  height: 100%;
  justify-content: center;
  text-align: center;
}

.legend {
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 12px;
}

.legend span {
  align-items: center;
  display: inline-flex;
  gap: 7px;
}

.swatch {
  border-radius: 999px;
  display: inline-block;
  height: 10px;
  width: 10px;
}

.swatch.food {
  background: var(--coral);
}

.swatch.burned,
.swatch.activity {
  background: var(--green);
}

.swatch.activity {
  background: var(--blue);
}

.swatch.deficit-negative {
  background: var(--red);
}

.month-form {
  align-items: center;
  display: flex;
  gap: 8px;
}

.calendar-section.is-loading {
  opacity: 0.62;
  pointer-events: none;
}

.month-form input,
.month-step {
  min-height: 40px;
}

.month-step {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: inline-flex;
  font-size: 24px;
  font-weight: 900;
  justify-content: center;
  line-height: 1;
  text-decoration: none;
  width: 42px;
}

.month-step:hover {
  background: var(--health-bg);
}

.weekday-grid,
.calendar-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.weekday-grid {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  margin-bottom: 8px;
  text-align: center;
}

.calendar-day {
  align-content: center;
  aspect-ratio: 1 / 0.82;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  display: grid;
  justify-items: center;
  min-height: 76px;
  padding: 10px;
  position: relative;
  text-decoration: none;
}

.calendar-day.good {
  background: var(--green-soft);
  border-color: #abd9c7;
}

.calendar-day.bad {
  background: var(--red-soft);
  border-color: #edb8ae;
}

.calendar-day.neutral {
  background: var(--health-bg);
  border-color: var(--line);
}

.calendar-day.blank {
  background: transparent;
  border: 0;
}

.calendar-date {
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  left: 9px;
  line-height: 1;
  position: absolute;
  top: 9px;
}

.calendar-deficit {
  font-size: clamp(20px, 2.6vw, 32px);
  letter-spacing: 0;
  line-height: 1;
}

.calendar-day.good .calendar-deficit {
  color: var(--green);
}

.calendar-day.bad .calendar-deficit {
  color: var(--red);
}

.calendar-day.neutral .calendar-deficit {
  color: var(--muted);
}

.calendar-unit {
  color: var(--muted);
  font-size: 11px;
  font-weight: 900;
  line-height: 1;
  margin-top: 4px;
  text-transform: uppercase;
}

.form-layout {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
}

.weight-layout {
  align-items: start;
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1fr);
}

.stack-form,
.weight-log-panel,
.profile-grid {
  display: grid;
  gap: 14px;
}

.stack-form.is-submitting,
.weight-log-panel.is-submitting,
.profile-grid.is-submitting {
  cursor: wait;
}

.form-status {
  align-items: center;
  background: var(--green-soft);
  border: 1px solid #abd9c7;
  border-radius: 8px;
  color: var(--green);
  display: flex;
  font-size: 14px;
  font-weight: 850;
  gap: 10px;
  min-height: 48px;
  padding: 10px 12px;
}

.form-status[hidden] {
  display: none;
}

.profile-grid .form-status {
  grid-column: 1 / -1;
}

.spinner {
  animation: spin 900ms linear infinite;
  border: 3px solid rgba(24, 115, 93, 0.2);
  border-radius: 999px;
  border-top-color: var(--green);
  flex: 0 0 auto;
  height: 18px;
  width: 18px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.stack-form label,
.weight-log-panel label,
.profile-grid label {
  color: var(--muted);
  display: grid;
  font-size: 13px;
  font-weight: 900;
  gap: 7px;
}

.stack-form input,
.stack-form textarea,
.weight-log-panel input,
.profile-grid input,
.profile-grid select {
  appearance: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  min-height: 48px;
  padding: 10px 12px;
  width: 100%;
}

.stack-form textarea {
  min-height: 364px;
  resize: vertical;
}

.stack-form button,
.weight-log-panel button,
.profile-grid button {
  background: var(--green);
  border-color: var(--green);
  color: white;
  min-height: 50px;
}

.stack-form button:disabled,
.weight-log-panel button:disabled,
.profile-grid button:disabled {
  background: var(--green);
  color: white;
}

.weight-log-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.weight-log-panel p {
  margin: 6px 0 0;
}

.result-panel {
  padding: 20px;
}

.analysis-list {
  display: grid;
  gap: 10px;
  margin: 18px 0;
}

.analysis-list div {
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  padding-bottom: 8px;
}

.analysis-list dt {
  color: var(--muted);
}

.analysis-list dd {
  font-weight: 900;
  margin: 0;
}

.macro-summary {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 16px 0;
}

.macro-summary div {
  background: var(--health-bg);
  border: 1px solid rgba(220, 229, 232, 0.72);
  border-radius: 8px;
  display: grid;
  gap: 4px;
  padding: 10px;
}

.macro-summary span,
.food-item span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
}

.macro-summary strong {
  font-size: 20px;
  line-height: 1;
}

.food-breakdown {
  margin: 18px 0;
}

.food-breakdown h3 {
  font-size: 16px;
  margin: 0 0 10px;
}

.food-groups {
  display: grid;
  gap: 12px;
}

.food-group {
  display: grid;
  gap: 8px;
}

.food-group-heading {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
}

.food-group-heading h4 {
  font-size: 14px;
  margin: 0;
}

.food-group-heading strong {
  color: var(--green);
  font-size: 13px;
  white-space: nowrap;
}

.food-list {
  display: grid;
  gap: 8px;
}

.food-item {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  padding: 10px 12px;
}

.food-item div {
  display: grid;
  gap: 3px;
}

.food-item b {
  white-space: nowrap;
}

.assumptions {
  color: var(--muted);
  padding-left: 18px;
}

.photo-grid {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 18px;
}

.photo-grid img {
  aspect-ratio: 1;
  border-radius: 8px;
  object-fit: cover;
  width: 100%;
}

.profile-grid {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding: 22px;
}

.profile-grid button {
  grid-column: 1 / -1;
}

.flash-stack {
  left: 50%;
  position: fixed;
  top: 78px;
  transform: translateX(-50%);
  width: min(520px, calc(100vw - 32px));
  z-index: 20;
}

.flash {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 16px 40px rgba(27, 35, 40, 0.14);
  margin-bottom: 8px;
  padding: 12px 14px;
}

.flash.success {
  border-color: #9bccba;
}

.flash.error {
  border-color: #e7a199;
}

.login-body {
  align-items: center;
  display: grid;
  min-height: 100vh;
  padding: 24px;
}

.login-panel {
  display: grid;
  gap: 22px;
  margin: 0 auto;
  max-width: 420px;
  padding: 28px;
  width: 100%;
}

.login-brand {
  font-size: 24px;
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: minmax(0, auto) 1fr auto auto;
  }

  .toolbar,
  .section-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .metric-grid,
  .form-layout,
  .weight-layout,
  .profile-grid {
    grid-template-columns: 1fr;
  }

  .balance-head,
  .balance-label {
    align-items: stretch;
  }

  .balance-head {
    flex-direction: column;
  }

  .balance-result {
    align-items: end;
    border-left: 0;
    border-top: 1px solid var(--line);
    display: flex;
    gap: 8px;
    justify-content: space-between;
    min-width: 0;
    padding-left: 0;
    padding-top: 12px;
    text-align: left;
  }

  .balance-result strong {
    margin: 0;
  }

  .calendar-day {
    font-size: 12px;
    min-height: 58px;
    padding: 7px;
  }

  .calendar-date {
    font-size: 11px;
    left: 7px;
    top: 7px;
  }

  .calendar-deficit {
    font-size: 18px;
  }

  .calendar-unit {
    font-size: 10px;
  }
}

@media (max-width: 520px) {
  .page-shell {
    padding: 26px 14px 56px;
  }

  .site-header {
    gap: 8px;
    padding: 10px 14px;
  }

  .language-menu .header-menu-button {
    font-size: 12px;
    min-width: 64px;
  }

  .header-menu-button {
    font-size: 12px;
    min-height: 40px;
    padding: 0 10px;
  }

  .metric strong {
    font-size: 26px;
  }

  .balance-card {
    padding: 18px 16px;
  }

  .balance-breakdown {
    flex-direction: column;
    align-items: flex-start;
  }

  .calendar-section {
    padding: 16px 12px;
  }

  .weekday-grid,
  .calendar-grid {
    gap: 4px;
  }

  .calendar-day {
    min-height: 50px;
    padding: 4px;
  }

  .calendar-date {
    font-size: 10px;
    left: 5px;
    top: 5px;
  }

  .calendar-deficit {
    font-size: clamp(11px, 3.2vw, 15px);
    max-width: 100%;
  }

  .calendar-unit {
    display: none;
  }

  .macro-summary {
    grid-template-columns: 1fr;
  }

  .food-item {
    align-items: flex-start;
    flex-direction: column;
  }
}