/* ── shadcn/ui — zinc dark theme (default) ────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --background:         hsl(240 10% 3.9%);
  --foreground:         hsl(0 0% 98%);
  --card:               hsl(240 10% 3.9%);
  --card-foreground:    hsl(0 0% 98%);
  --popover:            hsl(240 10% 3.9%);
  --popover-foreground: hsl(0 0% 98%);
  --primary:            hsl(0 0% 98%);
  --primary-foreground: hsl(240 5.9% 10%);
  --secondary:          hsl(240 3.7% 15.9%);
  --secondary-foreground: hsl(0 0% 98%);
  --muted:              hsl(240 3.7% 15.9%);
  --muted-foreground:   hsl(240 5% 64.9%);
  --accent:             hsl(240 3.7% 15.9%);
  --accent-foreground:  hsl(0 0% 98%);
  --destructive:        hsl(0 62.8% 30.6%);
  --destructive-foreground: hsl(0 0% 98%);
  --border:             hsl(240 3.7% 15.9%);
  --input:              hsl(240 3.7% 15.9%);
  --ring:               hsl(240 4.9% 83.9%);
  --radius:             0.375rem;

  --surface:            hsl(240 6% 7%);
  --surface-raised:     hsl(240 5% 11%);
  --indigo:             hsl(243 75% 59%);
  --indigo-muted:       hsl(243 75% 59% / 0.15);
  --green:              hsl(142 71% 45%);
  --red:                hsl(0 72% 51%);
  --hover-border:       hsl(240 5% 30%);
  --mark-color:         hsl(243 100% 80%);
  --swatch-border:      hsl(0 0% 100% / 0.08);
}

/* ── LIGHT THEME ─────────────────────────────────────── */
[data-theme="light"] {
  --background:         hsl(0 0% 100%);
  --foreground:         hsl(240 10% 3.9%);
  --card:               hsl(0 0% 100%);
  --card-foreground:    hsl(240 10% 3.9%);
  --muted:              hsl(240 4.8% 95.9%);
  --muted-foreground:   hsl(240 3.8% 46.1%);
  --accent:             hsl(240 4.8% 95.9%);
  --accent-foreground:  hsl(240 5.9% 10%);
  --destructive:        hsl(0 84.2% 60.2%);
  --destructive-foreground: hsl(0 0% 98%);
  --border:             hsl(240 5.9% 90%);
  --input:              hsl(240 5.9% 90%);
  --ring:               hsl(240 10% 3.9%);
  --surface:            hsl(0 0% 98%);
  --surface-raised:     hsl(240 4.8% 95.9%);
  --indigo:             hsl(243 75% 59%);
  --indigo-muted:       hsl(243 75% 59% / 0.12);
  --green:              hsl(142 71% 35%);
  --red:                hsl(0 72% 51%);
  --hover-border:       hsl(240 5% 75%);
  --mark-color:         hsl(243 75% 45%);
  --swatch-border:      hsl(0 0% 0% / 0.12);
}

html, body { height: 100%; overflow: hidden; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 12px;
  background: var(--background);
  color: var(--foreground);
  -webkit-font-smoothing: antialiased;
}

/* ── LAYOUT ──────────────────────────────────────────── */
.app {
  display: grid;
  grid-template-columns: 300px 1fr 360px;
  height: 100vh;
  overflow: hidden;
}

/* ── PANELS ──────────────────────────────────────────── */
.panel {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-right: 1px solid var(--border);
}
.panel:last-child { border-right: none; }

.panel-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 14px;
  height: 42px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted-foreground);
}
.panel-header span { opacity: 0.6; }

.panel-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

/* ── TOOLBAR (chart panel) ───────────────────────────── */
.toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 7px 12px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.toolbar label {
  font-size: 11px;
  color: var(--muted-foreground);
  font-weight: 500;
}
.toolbar select {
  height: 28px;
  padding: 0 8px;
  font-size: 11px;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
  color: var(--foreground);
  cursor: pointer;
  outline: none;
}
.toolbar select:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 2px hsl(240 10% 3.9% / 0.08);
}
.toolbar button {
  height: 28px;
  padding: 0 10px;
  font-size: 11px;
  font-family: inherit;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
  color: var(--foreground);
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s;
  white-space: nowrap;
}
.toolbar button:hover {
  background: var(--accent);
  border-color: var(--hover-border);
}
.toolbar button:active { background: var(--surface); }

/* ── SECTIONS / ACCORDION ────────────────────────────── */
.section { border-bottom: 1px solid var(--border); }

.section-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 9px 14px;
  background: var(--surface);
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  transition: background 0.1s, color 0.1s;
}
.section-toggle:hover {
  background: var(--surface-raised);
  color: var(--foreground);
}
.section-toggle.open { color: var(--foreground); }

.section-toggle .arrow {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: calc(var(--radius) / 2);
  font-size: 8px;
  transition: transform 0.18s cubic-bezier(0.4,0,0.2,1);
  color: var(--muted-foreground);
}
.section-toggle.open .arrow { transform: rotate(90deg); color: var(--foreground); }

.section-body {
  display: none;
  padding: 10px 12px 12px;
  background: var(--background);
}
.section-body.open { display: block; }

/* ── FIELDS ──────────────────────────────────────────── */
.field {
  display: grid;
  grid-template-columns: 106px 1fr;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}
.field:last-child { margin-bottom: 0; }

.field label {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted-foreground);
  text-align: right;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 3px;
}

/* ── DOC LINKS ──────────────────────────────────────────── */
.doc-link {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  font-size: 9px;
  line-height: 1;
  color: var(--muted-foreground);
  opacity: 0;
  text-decoration: none;
  transition: opacity 0.12s, color 0.12s, background 0.12s;
  order: -1;
}
.field:hover .doc-link { opacity: 0.6; }
.doc-link:hover {
  opacity: 1 !important;
  color: var(--indigo);
  background: var(--indigo-muted);
}

/* ── INPUT / SELECT / TEXTAREA (shadcn style) ─────────── */
.ctrl {
  width: 100%;
  height: 28px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--foreground);
  padding: 0 8px;
  border-radius: var(--radius);
  font-size: 11px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.ctrl::placeholder { color: var(--muted-foreground); }
.ctrl:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
}
.ctrl:hover:not(:focus) { border-color: var(--hover-border); }

input[type=number].ctrl { -moz-appearance: textfield; appearance: textfield; }
input[type=number].ctrl::-webkit-outer-spin-button,
input[type=number].ctrl::-webkit-inner-spin-button { -webkit-appearance: none; }

input[type=search].ctrl::-webkit-search-cancel-button { display: none; }

input[type=color].ctrl {
  padding: 2px 4px;
  cursor: pointer;
  background: var(--surface-raised);
}
input[type=checkbox].ctrl {
  width: 15px;
  height: 15px;
  padding: 0;
  cursor: pointer;
  accent-color: var(--indigo);
  border-radius: calc(var(--radius) / 2);
  justify-self: start;
  border: 1px solid var(--border);
}
input[type=range].ctrl {
  padding: 0;
  accent-color: var(--indigo);
  height: auto;
}
textarea.ctrl {
  height: auto;
  padding: 6px 8px;
  resize: vertical;
  line-height: 1.5;
}
select.ctrl { cursor: pointer; }

.field-hint {
  grid-column: 2;
  font-size: 10px;
  color: var(--muted-foreground);
  margin-top: -4px;
  margin-bottom: 3px;
}

/* ── SUBSECTION LABELS ────────────────────────────────── */
.subsection-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--indigo);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin: 12px 0 6px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
  opacity: 0.85;
}

/* ── COLOR ROW ───────────────────────────────────────── */
.color-row {
  display: flex;
  gap: 4px;
  align-items: center;
}
.color-row input[type=color] {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-raised);
  padding: 2px;
  cursor: pointer;
}
.color-row input[type=color]:focus {
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
  outline: none;
}
.color-row input[type=text] {
  flex: 1;
  height: 28px;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--foreground);
  padding: 0 8px;
  border-radius: var(--radius);
  font-size: 11px;
  font-family: 'JetBrains Mono', 'Cascadia Code', 'Menlo', monospace;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.color-row input[type=text]:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
}
.color-row input[type=text]:hover:not(:focus) { border-color: var(--hover-border); }

/* ── FILTER BAR ──────────────────────────────────────── */
.filter-bar {
  flex-shrink: 0;
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.filter-bar-icon {
  position: absolute;
  left: 20px;
  color: var(--muted-foreground);
  font-size: 13px;
  pointer-events: none;
  line-height: 1;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.7;
}
.filter-input {
  flex: 1;
  height: 30px;
  padding: 0 8px 0 28px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  color: var(--foreground);
  border-radius: var(--radius);
  font-size: 12px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.filter-input::placeholder { color: var(--muted-foreground); }
.filter-input:focus {
  border-color: var(--ring);
  box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring);
  background: var(--background);
}
.filter-clear-btn {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: none;
  align-items: center;
  justify-content: center;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) / 2);
  color: var(--muted-foreground);
  cursor: pointer;
  font-size: 11px;
  line-height: 1;
  padding: 0;
  transition: background 0.12s, color 0.12s;
}
.filter-clear-btn:hover {
  background: var(--accent);
  color: var(--foreground);
  border-color: var(--hover-border);
}
.filter-count {
  font-size: 10px;
  color: var(--muted-foreground);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* filter states */
.field.filter-hidden { display: none !important; }
.subsection-label.filter-hidden { display: none !important; }
.section.filter-empty { display: none !important; }
.field mark {
  background: var(--indigo-muted);
  color: var(--mark-color);
  border-radius: 2px;
  padding: 0 2px;
  font-style: normal;
}

/* ── CHART PANEL ─────────────────────────────────────── */
#chart-panel { background: var(--surface); }
#chart-panel .panel-header {
  background: var(--surface);
  color: var(--muted-foreground);
  border-bottom: 1px solid var(--border);
}
#chart { flex: 1; min-height: 0; }

/* ── JSON PANEL ──────────────────────────────────────── */
#json-panel { background: var(--background); }

.json-toolbar {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 7px 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.json-toolbar button {
  height: 26px;
  padding: 0 10px;
  font-size: 11px;
  font-family: inherit;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--foreground);
  cursor: pointer;
  transition: background 0.12s, color 0.12s, border-color 0.12s;
  white-space: nowrap;
}
.json-toolbar button:hover {
  background: var(--accent);
  color: var(--accent-foreground);
  border-color: var(--hover-border);
}
.json-toolbar button:active { background: var(--surface-raised); }

#json-status {
  margin-left: auto;
  font-size: 10px;
  font-family: 'JetBrains Mono', 'Cascadia Code', 'Menlo', monospace;
  padding: 2px 7px;
  border-radius: calc(var(--radius) / 2);
  font-weight: 500;
}
#json-status.ok { color: var(--green); }
#json-status.err {
  color: var(--red);
  background: hsl(0 62.8% 30.6% / 0.15);
}

#json-editor {
  flex: 1;
  min-height: 0;
  width: 100%;
  background: var(--background);
  color: var(--foreground);
  border: none;
  padding: 14px 16px;
  font-family: 'JetBrains Mono', 'Cascadia Code', 'Menlo', 'Monaco', 'Consolas', monospace;
  font-size: 11.5px;
  line-height: 1.7;
  resize: none;
  outline: none;
  tab-size: 2;
}

/* ── COLORWAY SWATCHES ───────────────────────────────── */
#colorway-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 8px;
}
.swatch {
  width: 20px;
  height: 20px;
  border-radius: calc(var(--radius) / 2);
  border: 1px solid var(--swatch-border);
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
}
.swatch:hover {
  transform: scale(1.18);
  box-shadow: 0 2px 8px hsl(0 0% 0% / 0.4);
}

/* ── RANGE FIELD ─────────────────────────────────────── */
.range-field { display: flex; gap: 4px; }
.range-field input { flex: 1; }

/* ── THEME TOGGLE BUTTON ─────────────────────────────── */
#theme-toggle {
  margin-left: auto;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--muted-foreground);
  cursor: pointer;
  font-size: 14px;
  flex-shrink: 0;
  transition: background 0.12s, color 0.12s;
}
#theme-toggle:hover { background: var(--accent); color: var(--foreground); }

/* ── LEFT PANEL TABS ─────────────────────────────────── */
.panel-tabs {
  flex-shrink: 0;
  display: flex;
  gap: 1px;
  padding: 6px 8px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.panel-tab-btn {
  flex: 1;
  height: 26px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted-foreground);
  font-size: 11px;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}
.panel-tab-btn:hover { background: var(--accent); color: var(--foreground); }
.panel-tab-btn.active {
  background: var(--background);
  border-color: var(--border);
  color: var(--foreground);
}

/* ── JSON PANEL TABS ─────────────────────────────────── */
.json-tabs {
  display: flex;
  gap: 2px;
  margin-left: auto;
}
.json-tab-btn {
  height: 22px;
  padding: 0 9px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: calc(var(--radius) / 1.5);
  color: var(--muted-foreground);
  font-size: 10px;
  font-weight: 600;
  font-family: inherit;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background 0.1s, color 0.1s;
}
.json-tab-btn:hover { background: var(--accent); color: var(--foreground); }
.json-tab-btn.active {
  background: var(--surface-raised);
  border-color: var(--border);
  color: var(--foreground);
}

/* ── TRACE SELECTOR ──────────────────────────────────── */
.trace-selector {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 8px 10px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.trace-pill {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  padding: 0 8px;
  background: var(--surface-raised);
  border: 1px solid var(--border);
  border-radius: 9999px;
  color: var(--muted-foreground);
  font-size: 10px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}
.trace-pill:hover { border-color: var(--hover-border); color: var(--foreground); }
.trace-pill.active { background: var(--indigo); border-color: var(--indigo); color: white; }
.trace-pill .pill-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.trace-pill .pill-del {
  margin-left: 2px;
  opacity: 0.6;
  font-size: 9px;
}
.trace-pill:hover .pill-del { opacity: 1; }
.trace-add-pill {
  height: 24px;
  padding: 0 10px;
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: 9999px;
  color: var(--muted-foreground);
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
  transition: border-color 0.1s, color 0.1s;
}
.trace-add-pill:hover { border-color: var(--indigo); color: var(--indigo); }

/* ── SCROLLBAR ───────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--hover-border); }