:root {
  color-scheme: light;
  --bg: #f6f7f5;
  --panel: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --accent: #0f766e;
  --accent-soft: #e6f5f1;
  --border: #e2e8f0;
  --shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  --field-bg: #f8fafc;
  --radius: 18px;
  --font: "Space Grotesk", "Montserrat", "Poppins", system-ui, sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #09111a;
  --panel: #121b27;
  --ink: #e6edf5;
  --muted: #9dafc5;
  --accent: #14b8a6;
  --accent-soft: #16303a;
  --border: #263546;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  --field-bg: #1a2736;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  background: radial-gradient(circle at top, #ffffff 0%, #f3f4f2 45%, #eef2f1 100%);
  color: var(--ink);
  min-height: 100vh;
}

:root[data-theme="dark"] body {
  background: radial-gradient(circle at top, #122131 0%, #0b141d 45%, #09111a 100%);
}

.app {
  max-width: 960px;
  margin: 32px auto 48px;
  padding: 0 20px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 24px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand h1 {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

.brand p {
  color: var(--muted);
  font-size: 0.9rem;
}

.dot {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, #0f766e, #14b8a6);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  gap: 8px;
  background: var(--panel);
  padding: 6px;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.ghost {
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 600;
  cursor: pointer;
}

.icon-button {
  width: 40px;
  height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.theme-icon {
  width: 18px;
  height: 18px;
  display: inline-flex;
}

.theme-icon svg {
  width: 100%;
  height: 100%;
  fill: currentColor;
}

.icon-sun {
  display: none;
}

:root[data-theme="dark"] .icon-sun {
  display: inline-flex;
}

:root[data-theme="dark"] .icon-moon {
  display: none;
}

.file-input-hidden {
  display: none;
}

.tab {
  border: none;
  background: transparent;
  padding: 8px 18px;
  border-radius: 999px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  transition: all 160ms ease;
}

.tab.active {
  color: var(--ink);
  background: var(--accent-soft);
}

main {
  display: grid;
  gap: 20px;
}

.card {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
  gap: 12px;
}

.card-header p {
  color: var(--muted);
  font-size: 0.9rem;
}

form {
  display: grid;
  gap: 14px;
  grid-template-columns: 1.4fr 1fr 1fr auto;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--muted);
}

input,
select {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  font-size: 0.95rem;
  background: var(--field-bg);
  color: var(--ink);
}

.food-combobox {
  position: relative;
}

.food-suggestions {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: 12px;
  box-shadow: var(--shadow);
  z-index: 5;
  padding: 4px;
}

.food-suggestion {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  color: var(--ink);
  padding: 10px 11px;
  border-radius: 9px;
  cursor: pointer;
}

.food-suggestion:hover,
.food-suggestion.active {
  background: var(--accent-soft);
}

button.primary {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 10px 18px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease;
}

button.primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 20px rgba(15, 118, 110, 0.25);
}

.hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.85rem;
}

.totals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.total-card {
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--field-bg);
  border: 1px solid var(--border);
}

.total-card strong {
  font-size: 1.2rem;
}

.total-card span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
}

.list {
  display: grid;
  gap: 10px;
}

.row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--field-bg);
  border: 1px solid var(--border);
}

.row-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.row-title {
  font-weight: 600;
}

.row-sub {
  color: var(--muted);
  font-size: 0.8rem;
  margin-top: 2px;
}

.row-kcal {
  font-weight: 700;
}

.row-delete {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--muted);
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 0.75rem;
  cursor: pointer;
}

.row-delete:hover {
  color: #ef4444;
  border-color: #ef4444;
}

.history-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.history-charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.chart-card {
  background: var(--field-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  position: relative;
}

.chart-card h3 {
  font-size: 0.9rem;
  margin-bottom: 10px;
}

.chart-grid {
  min-height: 170px;
}

#history-kcal-chart {
  display: block;
}

#history-macro-chart {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(26px, 1fr);
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.chart-col {
  display: grid;
  grid-template-rows: auto 1fr auto;
  align-items: end;
  min-width: 26px;
}

.chart-value {
  font-size: 0.7rem;
  color: var(--muted);
  text-align: center;
  margin-bottom: 4px;
}

.chart-track {
  height: 110px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel);
  position: relative;
  overflow: hidden;
}

.chart-fill {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 8px;
}

.chart-fill.kcal {
  background: linear-gradient(180deg, #14b8a6, #0f766e);
}

.chart-track.stacked {
  display: flex;
  flex-direction: column-reverse;
  justify-content: flex-start;
  align-self: end;
  height: 110px;
}

.chart-seg {
  width: 100%;
}

.chart-seg.protein,
.legend-dot.protein {
  background: #22c55e;
}

.chart-seg.carbs,
.legend-dot.carbs {
  background: #f59e0b;
}

.chart-seg.fat,
.legend-dot.fat {
  background: #ef4444;
}

.chart-label {
  font-size: 0.68rem;
  color: var(--muted);
  text-align: center;
  margin-top: 5px;
  white-space: nowrap;
}

.chart-legend {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 10px;
  font-size: 0.75rem;
  color: var(--muted);
}

.chart-legend span {
  display: flex;
  align-items: center;
  gap: 5px;
}

.line-chart-scroll {
  overflow-x: auto;
  padding-bottom: 2px;
}

.line-chart-svg {
  display: block;
  width: 100%;
  min-width: 320px;
  height: 180px;
}

.line-axis {
  stroke: var(--border);
  stroke-width: 1;
}

.line-path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.goal-line {
  stroke: #f59e0b;
  stroke-width: 1.5;
  stroke-dasharray: 6 4;
}

.line-point {
  fill: var(--accent);
  stroke: var(--panel);
  stroke-width: 2;
}

.line-point.goal-under {
  fill: #ef4444;
}

.line-point.goal-over {
  fill: #22c55e;
}

.line-chart-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.72rem;
}

.chart-tooltip {
  position: absolute;
  z-index: 3;
  max-width: 180px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--ink);
  font-size: 0.72rem;
  pointer-events: none;
  box-shadow: var(--shadow);
}

.goal-indicators {
  display: grid;
  gap: 8px;
}

.goal-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--panel);
}

.goal-row strong {
  font-size: 0.86rem;
}

.goal-row > span {
  font-size: 0.75rem;
  color: var(--muted);
}

.goal-chip {
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 0.72rem;
}

.goal-chip.under {
  color: #dc2626;
}

.goal-chip.on {
  color: #16a34a;
}

.goal-chip.over {
  color: #0369a1;
}

.settings-panels {
  display: grid;
  gap: 14px;
}

.settings-panel {
  background: var(--field-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
}

.settings-panel h3 {
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.settings-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.goals-form {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.legend-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.hidden {
  display: none;
}

@media (max-width: 720px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .topbar-actions {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
  }

  .nav {
    flex: 1;
    justify-content: center;
  }

  form {
    grid-template-columns: 1fr;
  }

  .goals-form {
    grid-template-columns: 1fr;
  }

  .settings-actions .ghost {
    width: 100%;
  }
}