/* ============================================================
   Temperature Blanket — Design System + Styles
   Dark-first, cozy/data-aesthetic
   ============================================================ */

@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,600,700&f[]=cabinet-grotesk@700,800&display=swap');

/* ── Tokens ──────────────────────────────────────────────── */
:root {
  --font-display: 'Cabinet Grotesk', 'Satoshi', system-ui, sans-serif;
  --font-body:    'Satoshi', system-ui, sans-serif;

  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-full: 9999px;

  --sidebar-w: 280px;
  --legend-w:  220px;
  --header-h:  52px;

  --transition: 150ms ease;
  --transition-slow: 300ms ease;

  /* Row height per day in the blanket */
  --row-h: 5px;
}

/* ── Dark Theme (default) ────────────────────────────────── */
:root, [data-theme="dark"] {
  --color-bg:         #0d0f14;
  --color-surface:    #13161e;
  --color-surface-2:  #1a1e28;
  --color-surface-3:  #222636;
  --color-border:     #2a2f40;
  --color-border-2:   #353b52;
  --color-text:       #e8eaf0;
  --color-text-2:     #9aa0b8;
  --color-text-3:     #5c6278;
  --color-accent:     #7ec8e3;
  --color-accent-dim: rgba(126, 200, 227, 0.12);
  --color-danger:     #e84545;
  --color-success:    #a8d8a8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
}

[data-theme="light"] {
  --color-bg:         #f4f5f7;
  --color-surface:    #ffffff;
  --color-surface-2:  #f0f1f5;
  --color-surface-3:  #e8eaef;
  --color-border:     #dde0e8;
  --color-border-2:   #cdd0da;
  --color-text:       #1a1d28;
  --color-text-2:     #4a5068;
  --color-text-3:     #8890a8;
  --color-accent:     #2980a8;
  --color-accent-dim: rgba(41, 128, 168, 0.1);
  --color-danger:     #d63030;
  --color-success:    #3a8a3a;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-sm);
  overflow: hidden;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Header ──────────────────────────────────────────────── */
.app-header {
  height: var(--header-h);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  flex-shrink: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.header-brand { display: flex; align-items: center; gap: var(--space-3); }
.logo-icon { width: 28px; height: 28px; }
.logo-text {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.header-actions { display: flex; align-items: center; gap: var(--space-2); }

/* ── App Layout ──────────────────────────────────────────── */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr var(--legend-w);
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.sidebar-scroll::-webkit-scrollbar { width: 4px; }
.sidebar-scroll::-webkit-scrollbar-thumb { background: var(--color-border-2); border-radius: var(--radius-full); }

.control-section {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.control-section:last-of-type { border-bottom: none; }

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-3);
}

/* ── City Search ─────────────────────────────────────────── */
.city-search-wrap { position: relative; }
.search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute;
  left: var(--space-3);
  width: 14px;
  height: 14px;
  color: var(--color-text-3);
  pointer-events: none;
}
.search-clear {
  position: absolute;
  right: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-3);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
}
.search-clear svg { width: 12px; height: 12px; }
.search-clear:hover { color: var(--color-text); background: var(--color-surface-3); }

.search-results {
  position: absolute;
  top: calc(100% + var(--space-1));
  left: 0;
  right: 0;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  z-index: 200;
  overflow: hidden;
  max-height: 200px;
  overflow-y: auto;
}
.search-result-item {
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  transition: background var(--transition);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.search-result-item:hover { background: var(--color-surface-3); }
.result-name { font-size: var(--text-sm); font-weight: 500; color: var(--color-text); }
.result-country { font-size: var(--text-xs); color: var(--color-text-3); }
.search-loading { padding: var(--space-3) var(--space-4); color: var(--color-text-3); font-size: var(--text-xs); }

/* ── City Chips ──────────────────────────────────────────── */
.city-chips {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.city-chip {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}
.city-chip:hover { border-color: var(--color-border-2); }
.chip-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}
.chip-info { flex: 1; min-width: 0; }
.chip-name {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.chip-badge {
  font-size: 9px;
  font-weight: 700;
  padding: 1px 4px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-accent-dim);
  color: var(--color-accent);
}
.chip-meta { font-size: 10px; color: var(--color-text-3); }
.chip-actions { display: flex; gap: var(--space-1); }
.chip-btn {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--color-text-3);
  transition: all var(--transition);
}
.chip-btn:hover { background: var(--color-surface-3); color: var(--color-text); }
.chip-btn svg { width: 12px; height: 12px; }
.chip-btn.remove:hover { color: var(--color-danger); }

/* ── Pills / Presets ─────────────────────────────────────── */
.preset-pills {
  display: flex;
  gap: var(--space-1);
  flex-wrap: wrap;
  row-gap: var(--space-2);
}
.pill {
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-text-2);
  font-size: var(--text-xs);
  font-weight: 500;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
}
.pill:hover { border-color: var(--color-border-2); color: var(--color-text); }
.pill.active {
  background: var(--color-accent-dim);
  border-color: var(--color-accent);
  color: var(--color-accent);
  font-weight: 600;
}

/* ── Date inputs ─────────────────────────────────────────── */
.date-inputs { display: flex; flex-direction: column; gap: var(--space-2); }
.form-row { display: flex; align-items: center; gap: var(--space-3); }
.form-label { font-size: var(--text-xs); color: var(--color-text-3); width: 36px; flex-shrink: 0; }
.date-range-text { font-size: var(--text-xs); color: var(--color-text-2); display: block; margin-top: var(--space-1); }

/* ── Radio options ───────────────────────────────────────── */
.radio-group { display: flex; flex-direction: column; gap: var(--space-2); }
.radio-option {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
}
.radio-option input[type="radio"] { display: none; }
.radio-option:has(input:checked) {
  border-color: var(--color-accent);
  background: var(--color-accent-dim);
}
.radio-option:hover { border-color: var(--color-border-2); }
.radio-option:has(input:checked):hover { border-color: var(--color-accent); }
.radio-label { display: flex; flex-direction: column; gap: 2px; }
.radio-title { font-size: var(--text-xs); font-weight: 600; color: var(--color-text); }
.radio-desc { font-size: 10px; color: var(--color-text-3); }

/* ── Toggle switch ───────────────────────────────────────── */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  cursor: pointer;
  padding: var(--space-2) 0;
}
.toggle-label { display: flex; flex-direction: column; gap: 2px; font-size: var(--text-xs); }
.toggle-desc { font-size: 10px; color: var(--color-text-3); font-weight: 400; }
.toggle-switch {
  position: relative;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
}
.toggle-switch input { display: none; }
.toggle-knob {
  position: absolute;
  inset: 0;
  background: var(--color-surface-3);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-2);
  transition: background var(--transition);
  cursor: pointer;
}
.toggle-knob::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  top: 2px;
  left: 2px;
  background: var(--color-text-3);
  border-radius: 50%;
  transition: all var(--transition);
}
.toggle-switch input:checked + .toggle-knob {
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.toggle-switch input:checked + .toggle-knob::after {
  transform: translateX(16px);
  background: white;
}

/* ── Palette ─────────────────────────────────────────────── */
.palette-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}
.palette-option {
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--transition);
  background: none;
  padding: 0;
}
.palette-option:hover { border-color: var(--color-border-2); }
.palette-option.active { border-color: var(--color-accent); }
.palette-preview {
  display: flex;
  height: 28px;
}
.palette-preview span { flex: 1; }
.palette-name {
  font-size: 10px;
  color: var(--color-text-3);
  padding: var(--space-1) var(--space-2);
  display: block;
  text-align: center;
  background: var(--color-surface-2);
}
.swatch-row {
  display: flex;
  gap: 2px;
  flex-wrap: wrap;
}

/* ── Gradient pickers ────────────────────────────────────── */
.gradient-pickers { display: flex; flex-direction: column; gap: var(--space-2); }
.gradient-picker-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.gradient-label { font-size: 9px; color: var(--color-text-3); white-space: nowrap; }
.color-picker {
  width: 28px;
  height: 28px;
  border: none;
  padding: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: none;
  flex-shrink: 0;
}
.color-picker::-webkit-color-swatch-wrapper { padding: 0; }
.color-picker::-webkit-color-swatch { border: 1px solid var(--color-border-2); border-radius: var(--radius-sm); }
.gradient-preview {
  flex: 1;
  height: 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}
.swatch-btn {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition);
  position: relative;
}
.swatch-btn:hover { border-color: white; transform: scale(1.1); }

/* ── Input ───────────────────────────────────────────────── */
.input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  padding-left: var(--space-8);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: var(--text-xs);
  font-family: var(--font-body);
  transition: border-color var(--transition);
  outline: none;
}
.input:not([type="text"]) { padding-left: var(--space-3); }
.input:focus { border-color: var(--color-accent); }
.input::placeholder { color: var(--color-text-3); }
select.input { cursor: pointer; }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: var(--text-xs);
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary {
  background: var(--color-accent);
  color: #0d0f14;
  border-color: var(--color-accent);
}
.btn-primary:hover { filter: brightness(1.1); }
.btn-ghost {
  background: none;
  color: var(--color-text-2);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-surface-2); color: var(--color-text); border-color: var(--color-border-2); }
.btn-sm { padding: var(--space-1) var(--space-3); }
.btn-icon { width: 32px; height: 32px; padding: 0; }
.btn-icon svg { width: 16px; height: 16px; }
.btn-icon-left { width: 14px; height: 14px; }
.btn-full { width: 100%; }
.btn-danger { color: var(--color-text-3); }
.btn-danger:hover { color: #e05555; border-color: #e05555; background: rgba(224,85,85,0.08); }

/* ── Generate button ─────────────────────────────────────── */
.generate-wrap { padding: var(--space-4) 0 var(--space-2); }

/* ── Hints ───────────────────────────────────────────────── */
.hint-text { font-size: 10px; color: var(--color-text-3); line-height: 1.5; }
.section-hint { font-size: 9px; font-weight: 400; color: var(--color-text-3); text-transform: none; letter-spacing: 0; margin-left: var(--space-2); }

/* ── Canvas Area ─────────────────────────────────────────── */
.canvas-area {
  position: relative;
  overflow: hidden;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
}

/* ── Empty State ─────────────────────────────────────────── */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-8);
  text-align: center;
}
.empty-illustration { margin-bottom: var(--space-2); }
.empty-svg { width: 160px; height: auto; }
.empty-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-text);
}
.empty-desc {
  font-size: var(--text-sm);
  color: var(--color-text-2);
  max-width: 340px;
  line-height: 1.6;
}

/* ── Error State ─────────────────────────────────────────── */
.error-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-8);
}
.error-text { font-size: var(--text-sm); color: var(--color-danger); text-align: center; }

/* ── Loading ─────────────────────────────────────────────── */
.loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(13,15,20,0.85);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
}
[data-theme="light"] .loading-overlay { background: rgba(244,245,247,0.85); }
.loading-content { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); }
.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: var(--text-sm); color: var(--color-text-2); }
.loading-progress {
  width: 200px;
  height: 3px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 300ms ease;
}

/* ── Blanket Container ───────────────────────────────────── */
.blanket-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

/* ── Zoom Controls ───────────────────────────────────────── */
.zoom-controls {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-1);
  box-shadow: var(--shadow-sm);
}
.zoom-level {
  font-size: var(--text-xs);
  color: var(--color-text-2);
  min-width: 36px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ── Canvas scroll wrap ──────────────────────────────────── */
.canvas-scroll-wrap {
  flex: 1;
  overflow: auto;
  cursor: grab;
  user-select: none;
  padding: var(--space-6);
  padding-top: var(--space-10);
}
.canvas-scroll-wrap:active { cursor: grabbing; }
.canvas-scroll-wrap::-webkit-scrollbar { width: 6px; height: 6px; }
.canvas-scroll-wrap::-webkit-scrollbar-thumb { background: var(--color-border-2); border-radius: var(--radius-full); }

.canvas-transform-wrap { display: inline-block; transform-origin: top left; }

/* ── Blanket columns ─────────────────────────────────────── */
.blanket-columns {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

/* Month labels panel — sits left of all columns, same height as blankets */
.month-labels-panel {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  width: 34px;
}
.month-header-spacer {
  /* matches col-header height so labels align with canvas rows */
  height: var(--col-header-h, 62px);
  flex-shrink: 0;
}

.blanket-city-col { display: flex; flex-direction: column; align-items: center; transition: opacity 0.15s; }
.blanket-city-col.is-dragging { opacity: 0.35; }
.blanket-city-col.drag-over { outline: 2px dashed var(--color-accent); outline-offset: -2px; border-radius: var(--radius-md); }
.col-header[draggable="true"] { cursor: grab; }
.col-header[draggable="true"]:active { cursor: grabbing; }
.blanket-city-label {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-2);
  margin-bottom: var(--space-2);
  text-align: center;
  white-space: nowrap;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.blanket-city-label .sh-badge {
  font-size: 9px;
  color: var(--color-accent);
  display: block;
  font-weight: 400;
}

.blanket-canvas-wrap {
  position: relative;
  display: flex;
}
.month-labels-col {
  display: flex;
  flex-direction: column;
  margin-right: var(--space-2);
  flex-shrink: 0;
}
.month-label-item {
  font-size: 12px;
  color: var(--color-text-2);
  line-height: 1;
  white-space: nowrap;
}

.city-canvas {
  display: block;
  width: 100%;
  cursor: crosshair;
  border-radius: var(--radius-sm);
}

/* ── Tooltip ─────────────────────────────────────────────── */
.tooltip {
  position: fixed;
  z-index: 1000;
  pointer-events: none;
  background: var(--color-surface);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-3);
  box-shadow: var(--shadow-md);
  min-width: 140px;
  transition: opacity 100ms ease;
}
.tooltip-city { font-size: 10px; font-weight: 700; color: var(--color-accent); margin-bottom: 2px; }
.tooltip-date { font-size: var(--text-xs); color: var(--color-text-2); margin-bottom: 2px; }
.tooltip-temp { font-size: var(--text-base); font-weight: 700; color: var(--color-text); }
.tooltip-zone { font-size: var(--text-xs); color: var(--color-text-3); margin-top: 2px; }

/* ── Legend Panel ────────────────────────────────────────── */
.legend-panel {
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  overflow-y: auto;
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.legend-panel::-webkit-scrollbar { width: 4px; }
.legend-panel::-webkit-scrollbar-thumb { background: var(--color-border-2); border-radius: var(--radius-full); }

.legend-items { display: flex; flex-direction: column; gap: var(--space-1); }

.legend-group-header {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-2);
  padding: var(--space-2) var(--space-2) var(--space-1);
  margin-top: var(--space-2);
}
.legend-group-header:first-child { margin-top: 0; }

.legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
  border: 1px solid transparent;
}
.legend-item:hover { background: var(--color-surface-2); }
.legend-item.highlighted { background: var(--color-surface-2); border-color: var(--color-border-2); }
.legend-item.dimmed { opacity: 0.35; }
.legend-swatch {
  width: 18px;
  height: 18px;
  border-radius: 3px;
  flex-shrink: 0;
}
.legend-info { flex: 1; min-width: 0; }
.legend-range { font-size: 13px; font-weight: 600; color: var(--color-text); display: block; }
.legend-name { font-size: 12px; color: var(--color-text-2); display: block; }

.legend-panel .section-title { font-size: var(--text-sm); color: var(--color-text-2); }

/* ── Stats ───────────────────────────────────────────────── */
.stats-title {
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}
.stats-grid { display: flex; flex-direction: column; gap: var(--space-2); }
.stat-row { display: flex; justify-content: space-between; align-items: center; }
.stat-label { font-size: 10px; color: var(--color-text-3); }
.stat-value { font-size: var(--text-xs); font-weight: 600; color: var(--color-text); font-variant-numeric: tabular-nums; }

/* ── Utilities ───────────────────────────────────────────── */
.hidden { display: none !important; }

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  :root {
    --sidebar-w: 240px;
    --legend-w:  180px;
  }
}
@media (max-width: 680px) {
  body { overflow: auto; }
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }
  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    max-height: 40vh;
  }
  .legend-panel {
    border-left: none;
    border-top: 1px solid var(--color-border);
    max-height: 30vh;
  }
  .canvas-area { min-height: 300px; }
  .zoom-controls { top: var(--space-2); right: var(--space-2); }
}

/* ── Skeleton loader ─────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg,
    var(--color-surface-2) 25%,
    var(--color-surface-3) 50%,
    var(--color-surface-2) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ── Icon theme toggle ───────────────────────────────────── */
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }
.icon-sun, .icon-moon { width: 16px; height: 16px; }

/* ── Per-city column headers ─────────────────────────────── */
.blanket-city-col { align-items: stretch; }

.col-header {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  padding: var(--space-2) var(--space-3);
  cursor: pointer;
  user-select: none;
  transition: border-color var(--transition), background var(--transition);
  margin-bottom: 0;
  min-width: 0;
  overflow: hidden;
}
.col-header:hover {
  border-color: var(--color-border-2);
  background: var(--color-surface-3);
}

.col-header-main {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  justify-content: space-between;
}

.col-header-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
  min-width: 0;
  flex: 1;
}

.col-city-name {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

.sh-badge-sm {
  font-size: 9px;
  color: var(--color-accent);
  font-weight: 400;
  margin-left: 3px;
}

.col-override-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
}

.col-chip {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  background: var(--color-surface-3);
  color: var(--color-text-3);
  border: 1px solid var(--color-border);
  line-height: 1.5;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}

.col-chip-overridden {
  background: var(--color-accent-dim);
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.col-header-actions {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.col-btn {
  background: transparent;
  border: none;
  color: var(--color-text-3);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
  padding: 0;
}
.col-btn:hover { background: var(--color-surface-3); color: var(--color-text); }
.col-btn-remove:hover { color: var(--color-danger); }
.col-btn-dupe:hover   { color: var(--color-accent); }

/* ── City popover ────────────────────────────────────────── */
.col-popover {
  position: fixed;
  z-index: 500;
  background: var(--color-surface);
  border: 1px solid var(--color-border-2);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-3);
  width: 280px;
  max-height: 80vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.col-popover.hidden { display: none; }

.popover-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.popover-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.popover-year-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.popover-custom-dates {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.popover-date-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.popover-date-sep {
  color: var(--color-text-3);
  font-size: var(--text-xs);
  flex-shrink: 0;
}
.input-sm {
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  height: auto;
  flex: 1;
  min-width: 0;
}

.popover-palette-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-1);
}
.palette-option-sm {
  padding: var(--space-1);
}
.palette-option-sm .palette-name {
  font-size: 8px;
}
.palette-option-sm .palette-preview {
  height: 8px;
}

.popover-zones {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.radio-option-sm {
  padding: var(--space-1) var(--space-2);
}
.radio-option-sm .radio-title {
  font-size: var(--text-xs);
}
.radio-option-sm .radio-desc { display: none; }

.pill-sm {
  font-size: 10px;
  padding: 2px 8px;
}

.btn-full {
  width: 100%;
  justify-content: center;
  margin-top: var(--space-1);
}
/* (overrides base .btn-full defined in button section) */