/* ==========================================================================
   Nutrition Lab -- orient-luxury design system
   Near-black default theme with a parchment light mode, gold accent stack,
   SVG grain texture overlay, Cinzel / Cormorant Garamond / Syne / IBM Plex Mono.
   ========================================================================== */

:root {
  --ol-radius: 10px;
  --ol-radius-sm: 6px;
  --ol-font-display: 'Cinzel', 'Georgia', serif;
  --ol-font-body: 'Cormorant Garamond', 'Georgia', serif;
  --ol-font-ui: 'Syne', 'Segoe UI', sans-serif;
  --ol-font-mono: 'IBM Plex Mono', 'Consolas', monospace;
}

html[data-theme="dark"] {
  --ol-bg: #09080b;
  --ol-bg-elevated: #131116;
  --ol-bg-elevated-2: #1a171e;
  --ol-text-primary: #f4efe4;
  --ol-text-secondary: #b9b0a5;
  --ol-text-muted: #7d746b;
  --ol-accent: #c9a84c;
  --ol-accent-strong: #e2c168;
  --ol-accent-soft: rgba(201, 168, 76, 0.14);
  --ol-border: rgba(201, 168, 76, 0.22);
  --ol-border-soft: rgba(244, 239, 228, 0.09);
  --ol-danger: #e08a7b;
  --ol-danger-soft: rgba(224, 138, 123, 0.14);
  --ol-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  --ol-track-off: #2a2730;
  --ol-carb: #7fb0a8;
  --ol-protein: #c9a84c;
  --ol-fat: #c0705f;
}

html[data-theme="light"] {
  --ol-bg: #f0ebe0;
  --ol-bg-elevated: #ffffff;
  --ol-bg-elevated-2: #f7f2e8;
  --ol-text-primary: #1c1712;
  --ol-text-secondary: #4a4038;
  --ol-text-muted: #7d7266;
  --ol-accent: #8a6820;
  --ol-accent-strong: #6e5119;
  --ol-accent-soft: rgba(138, 104, 32, 0.10);
  --ol-border: rgba(138, 104, 32, 0.28);
  --ol-border-soft: rgba(28, 23, 18, 0.10);
  --ol-danger: #a3382a;
  --ol-danger-soft: rgba(163, 56, 42, 0.10);
  --ol-shadow: 0 10px 26px rgba(60, 45, 20, 0.12);
  --ol-track-off: #d9d0bd;
  --ol-carb: #3f7a70;
  --ol-protein: #8a6820;
  --ol-fat: #a3382a;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--ol-bg);
  color: var(--ol-text-primary);
  font-family: var(--ol-font-body);
  font-size: 17px;
  line-height: 1.55;
  min-height: 100vh;
  transition: background-color 0.25s ease, color 0.25s ease;
}

h1, h2, h3 {
  font-family: var(--ol-font-display);
  color: var(--ol-text-primary);
  letter-spacing: 0.02em;
  margin: 0;
}

/* --------------------------------------------------------------------
   Grain texture overlay
   -------------------------------------------------------------------- */
.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.5;
  mix-blend-mode: soft-light;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-repeat: repeat;
}

html[data-theme="light"] .grain-overlay {
  opacity: 0.28;
  mix-blend-mode: multiply;
}

/* --------------------------------------------------------------------
   Header
   -------------------------------------------------------------------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 28px clamp(20px, 5vw, 56px) 20px;
  border-bottom: 1px solid var(--ol-border-soft);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--ol-border);
  border-radius: 50%;
  font-family: var(--ol-font-display);
  color: var(--ol-accent);
  font-size: 20px;
  flex-shrink: 0;
}

.brand-text h1 {
  font-size: 24px;
  font-weight: 600;
}

.brand-sub {
  margin: 2px 0 0;
  font-family: var(--ol-font-ui);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ol-text-muted);
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border);
  color: var(--ol-text-primary);
  font-family: var(--ol-font-ui);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.theme-toggle:hover {
  border-color: var(--ol-accent);
}

.theme-toggle-icon {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ol-accent);
  display: inline-block;
  box-shadow: 0 0 8px var(--ol-accent);
}

/* --------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------- */
.app-main {
  max-width: 980px;
  margin: 0 auto;
  padding: 32px clamp(20px, 5vw, 56px) 60px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.panel {
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border-soft);
  border-radius: var(--ol-radius);
  padding: 26px clamp(18px, 4vw, 32px);
  box-shadow: var(--ol-shadow);
}

.panel-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.count-pill {
  font-family: var(--ol-font-mono);
  font-size: 12px;
  background: var(--ol-accent-soft);
  color: var(--ol-accent-strong);
  border: 1px solid var(--ol-border);
  border-radius: 999px;
  padding: 2px 10px;
}

/* --------------------------------------------------------------------
   Control panel / form
   -------------------------------------------------------------------- */
.field {
  margin-bottom: 18px;
}

.field label,
.field-toggle-label-text {
  display: block;
  font-family: var(--ol-font-ui);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ol-text-secondary);
  margin-bottom: 8px;
}

.field-hint {
  text-transform: none;
  letter-spacing: 0;
  font-family: var(--ol-font-body);
  font-style: italic;
  font-size: 14px;
  color: var(--ol-text-muted);
  margin-left: 6px;
}

textarea,
input[type="number"] {
  width: 100%;
  background: var(--ol-bg);
  border: 1px solid var(--ol-border-soft);
  border-radius: var(--ol-radius-sm);
  color: var(--ol-text-primary);
  font-family: var(--ol-font-mono);
  font-size: 15px;
  padding: 12px 14px;
  resize: vertical;
  transition: border-color 0.2s ease;
}

textarea::placeholder {
  color: var(--ol-text-muted);
  font-family: var(--ol-font-mono);
}

textarea:focus,
input[type="number"]:focus {
  outline: none;
  border-color: var(--ol-accent);
}

.field-row {
  display: flex;
  align-items: flex-end;
  gap: 20px;
  flex-wrap: wrap;
}

.field-servings {
  width: 110px;
  margin-bottom: 0;
}

.field-toggle {
  margin-bottom: 0;
}

.field-submit {
  margin-bottom: 0;
  margin-left: auto;
}

.switch {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
}

.switch-track {
  display: block;
  width: 46px;
  height: 26px;
  border-radius: 999px;
  background: var(--ol-track-off);
  border: 1px solid var(--ol-border-soft);
  position: relative;
  transition: background-color 0.2s ease;
}

.switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ol-text-primary);
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.switch[data-checked="true"] .switch-track {
  background: var(--ol-accent);
}

.switch[data-checked="true"] .switch-thumb {
  transform: translateX(20px);
  background: #09080b;
}

.btn-primary {
  font-family: var(--ol-font-ui);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--ol-accent);
  color: #09080b;
  border: 1px solid var(--ol-accent);
  border-radius: var(--ol-radius-sm);
  padding: 12px 24px;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.1s ease;
}

.btn-primary:hover {
  background: var(--ol-accent-strong);
}

.btn-primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.form-message {
  margin: 14px 0 0;
  font-family: var(--ol-font-ui);
  font-size: 13px;
}

.form-message-error {
  color: var(--ol-danger);
  background: var(--ol-danger-soft);
  border: 1px solid var(--ol-danger);
  border-radius: var(--ol-radius-sm);
  padding: 10px 14px;
}

/* --------------------------------------------------------------------
   Card list / results
   -------------------------------------------------------------------- */
.card-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.empty-state {
  color: var(--ol-text-muted);
  font-style: italic;
  font-size: 15px;
  margin: 4px 0 0;
}

.nl-card {
  border: 1px solid var(--ol-border-soft);
  border-radius: var(--ol-radius);
  background: var(--ol-bg-elevated-2);
  padding: 22px clamp(16px, 3vw, 28px);
}

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

.nl-card-title-group {
  min-width: 0;
}

.nl-card-title {
  font-family: var(--ol-font-display);
  font-size: 19px;
  color: var(--ol-text-primary);
  margin: 0 0 4px;
  overflow-wrap: break-word;
}

.nl-card-meta {
  font-family: var(--ol-font-mono);
  font-size: 12px;
  color: var(--ol-text-muted);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.nl-card-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--ol-border-soft);
  background: var(--ol-bg-elevated);
  color: var(--ol-text-secondary);
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.icon-btn:hover {
  border-color: var(--ol-accent);
  color: var(--ol-accent);
}

.icon-btn.is-active {
  border-color: var(--ol-accent);
  color: var(--ol-accent);
  background: var(--ol-accent-soft);
}

.icon-btn.remove-btn:hover {
  border-color: var(--ol-danger);
  color: var(--ol-danger);
}

.nl-card-body {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.nl-wheel-col {
  flex: 0 0 150px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.nl-wheel-legend {
  font-family: var(--ol-font-ui);
  font-size: 11px;
  letter-spacing: 0.04em;
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 100%;
}

.nl-wheel-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--ol-text-secondary);
}

.nl-wheel-swatch {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  flex-shrink: 0;
}

.nl-stats-col {
  flex: 1 1 320px;
  min-width: 260px;
}

.nl-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.nl-stat-tile {
  background: var(--ol-bg);
  border: 1px solid var(--ol-border-soft);
  border-radius: var(--ol-radius-sm);
  padding: 10px 12px;
}

.nl-stat-value {
  font-family: var(--ol-font-mono);
  font-size: 17px;
  font-weight: 600;
  color: var(--ol-text-primary);
  display: block;
}

.nl-stat-label {
  font-family: var(--ol-font-ui);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ol-text-muted);
  display: block;
  margin-top: 2px;
}

.nl-properties-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 4px;
}

.nl-property-chip {
  font-family: var(--ol-font-mono);
  font-size: 12px;
  color: var(--ol-text-secondary);
  background: var(--ol-accent-soft);
  border: 1px solid var(--ol-border);
  border-radius: 999px;
  padding: 4px 12px;
}

.nl-property-chip strong {
  color: var(--ol-accent-strong);
  font-weight: 600;
}

/* Collapsible sections */
.nl-details {
  border-top: 1px solid var(--ol-border-soft);
  margin-top: 14px;
  padding-top: 10px;
}

.nl-details summary {
  cursor: pointer;
  font-family: var(--ol-font-ui);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ol-accent);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
}

.nl-details summary::-webkit-details-marker {
  display: none;
}

.nl-details summary::before {
  content: '\25B8';
  display: inline-block;
  transition: transform 0.15s ease;
  font-size: 11px;
}

.nl-details[open] summary::before {
  transform: rotate(90deg);
}

.nl-details-body {
  padding: 12px 2px 4px;
}

table.nl-nutrient-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--ol-font-mono);
  font-size: 13px;
}

table.nl-nutrient-table th,
table.nl-nutrient-table td {
  text-align: left;
  padding: 6px 10px;
  border-bottom: 1px solid var(--ol-border-soft);
  color: var(--ol-text-secondary);
}

table.nl-nutrient-table th {
  font-family: var(--ol-font-ui);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ol-text-muted);
  font-weight: 600;
}

table.nl-nutrient-table td.nl-nutrient-name {
  color: var(--ol-text-primary);
}

.nl-ingredient-block {
  border: 1px solid var(--ol-border-soft);
  border-radius: var(--ol-radius-sm);
  padding: 12px 14px;
  margin-bottom: 10px;
  background: var(--ol-bg);
}

.nl-ingredient-block:last-child {
  margin-bottom: 0;
}

.nl-ingredient-heading {
  font-family: var(--ol-font-ui);
  font-size: 13px;
  color: var(--ol-text-primary);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.nl-ingredient-heading .amount {
  color: var(--ol-text-muted);
  font-family: var(--ol-font-mono);
  font-size: 12px;
}

.nl-mini-stat-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--ol-font-mono);
  font-size: 12px;
  color: var(--ol-text-secondary);
}

.nl-mini-stat-row strong {
  color: var(--ol-text-primary);
}

.cached-badge {
  font-family: var(--ol-font-ui);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ol-text-muted);
  border: 1px solid var(--ol-border-soft);
  border-radius: 999px;
  padding: 2px 8px;
}

/* --------------------------------------------------------------------
   Footer / quota bar
   -------------------------------------------------------------------- */
.app-footer {
  padding: 18px clamp(20px, 5vw, 56px) 32px;
  display: flex;
  justify-content: flex-end;
}

.quota-bar {
  display: flex;
  gap: 22px;
  font-family: var(--ol-font-mono);
}

.quota-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.quota-label {
  font-family: var(--ol-font-ui);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ol-text-muted);
}

.quota-value {
  font-size: 14px;
  color: var(--ol-accent-strong);
  font-weight: 600;
}

/* --------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------- */
@media (max-width: 560px) {
  .app-header {
    flex-wrap: wrap;
  }
  .field-submit {
    margin-left: 0;
    width: 100%;
  }
  .btn-primary {
    width: 100%;
  }
  .nl-card-body {
    flex-direction: column;
  }
  .app-footer {
    justify-content: flex-start;
  }
  .quota-bar {
    flex-wrap: wrap;
    gap: 14px;
  }
}