/* ═══════════════════════════════════════════════════
   FILAMENT COMPARISON TOOL — Dark Neon Theme
   ═══════════════════════════════════════════════════ */

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

:root {
  /* Background layers */
  --bg:          #070710;
  --bg-card:     #0c0c1a;
  --bg-hover:    #121228;
  --bg-active:   #161632;

  /* Borders */
  --border:      rgba(255, 255, 255, 0.07);
  --border-md:   rgba(255, 255, 255, 0.12);
  --border-hi:   rgba(255, 255, 255, 0.20);

  /* Text */
  --text:        #dde0ff;
  --text-dim:    #6a6a9a;
  --text-dimmer: #3a3a5a;

  /* Accent / UI colour */
  --accent:      #00d4ff;
  --accent-glow: rgba(0, 212, 255, 0.20);

  /* Layout */
  --header-h:    60px;
  --sidebar-w:   272px;

  /* Typography */
  --font-mono:   'JetBrains Mono', 'Fira Mono', monospace;
}

/* ─── Light mode overrides ──────────────────────────── */

[data-theme="light"] {
  --bg:          #f0f0f6;
  --bg-card:     #ffffff;
  --bg-hover:    #e8e8f2;
  --bg-active:   #dfdff0;

  --border:      rgba(0, 0, 0, 0.08);
  --border-md:   rgba(0, 0, 0, 0.15);
  --border-hi:   rgba(0, 0, 0, 0.25);

  --text:        #1a1a2e;
  --text-dim:    #52527a;
  --text-dimmer: #9090aa;

  --accent:      #0090b0;
  --accent-glow: rgba(0, 144, 176, 0.12);
}

/* ─── Base ─────────────────────────────────────────── */

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Subtle grid overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] body::before {
  background-image:
    linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
}

/* ─── Header ────────────────────────────────────────── */

.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: rgba(7, 7, 16, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

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

.header-icon {
  width: 28px;
  height: 28px;
  color: var(--accent);
  filter: drop-shadow(0 0 8px var(--accent));
  flex-shrink: 0;
}

.app-header h1 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.3px;
}

.header-sub {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 1px;
}

.data-note {
  font-size: 11px;
  color: var(--text-dimmer);
  font-style: italic;
}

/* ─── Theme toggle button ───────────────────────────── */

.theme-toggle {
  background: none;
  border: 1px solid var(--border-md);
  color: var(--text-dim);
  width: 34px;
  height: 34px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.2s;
  margin-left: 12px;
}

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

.theme-toggle svg {
  width: 15px;
  height: 15px;
}

/* Show moon in dark mode, sun in light mode */
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* ─── App layout ────────────────────────────────────── */

.app-layout {
  display: flex;
  height: calc(100vh - var(--header-h));
  overflow: hidden;
  position: relative;
  z-index: 1;
}

/* ─── Sidebar ───────────────────────────────────────── */

.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--bg-card);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0;
  overflow-y: auto;
  overflow-x: hidden;
}

/* Thin scrollbar */
.sidebar::-webkit-scrollbar { width: 3px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.08);
  border-radius: 2px;
}

.sidebar-section {
  padding: 18px 14px 16px;
  border-bottom: 1px solid var(--border);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.section-title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.section-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.divider-dot {
  color: var(--text-dimmer);
  font-size: 10px;
}

.link-btn {
  background: none;
  border: none;
  color: var(--text-dimmer);
  font-size: 11px;
  cursor: pointer;
  padding: 2px 4px;
  border-radius: 3px;
  transition: color 0.15s;
}

.link-btn:hover {
  color: var(--accent);
}

.section-note {
  font-size: 11px;
  color: var(--text-dimmer);
  margin-bottom: 10px;
}

/* ─── Type filter strip ─────────────────────────────── */

.type-filter-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 12px;
}

.filter-pill {
  padding: 3px 9px;
  border-radius: 12px;
  font-size: 10.5px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
  border: 1px solid var(--border);
  color: var(--text-dimmer);
  background: transparent;
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1.6;
}

.filter-pill:hover {
  border-color: var(--border-md);
  color: var(--text-dim);
}

.filter-pill.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ─── Manufacturer groups ───────────────────────────── */

.manufacturer-group {
  margin-bottom: 8px;
}

.manufacturer-group:last-child {
  margin-bottom: 0;
}

/* Hide groups where all items are filtered out */
.manufacturer-group.all-hidden {
  display: none;
}

.manufacturer-label {
  font-size: 10px;
  font-weight: 500;
  color: var(--text-dimmer);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 4px 8px;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  border-radius: 5px;
  transition: color 0.15s, background 0.15s;
  user-select: none;
}

.manufacturer-label:hover {
  color: var(--text-dim);
  background: var(--bg-hover);
}

.mfr-chevron {
  color: var(--text-dimmer);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.manufacturer-group.collapsed .mfr-chevron {
  transform: rotate(-90deg);
}

.manufacturer-group.collapsed .filament-item {
  display: none;
}

/* Filament hidden by type filter */
.filament-item.filter-hidden {
  display: none;
}

/* ─── Filament item ─────────────────────────────────── */

.filament-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 8px;
  border-radius: 7px;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
  position: relative;
}

.filament-item:hover {
  background: var(--bg-hover);
}

.filament-item.active {
  background: var(--bg-active);
}

.filament-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 2px;
  border-radius: 2px;
  background: var(--item-color, var(--accent));
  box-shadow: 0 0 8px var(--item-color, var(--accent));
}

.color-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
  transition: box-shadow 0.2s;
}

.filament-item.active .color-dot {
  box-shadow: 0 0 10px var(--item-color, var(--accent));
}

.filament-item-name {
  flex: 1;
  font-size: 12.5px;
  color: var(--text);
  font-weight: 400;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.filament-item.active .filament-item-name {
  color: #fff;
  font-weight: 500;
}

.type-badge {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dimmer);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
  flex-shrink: 0;
}

.filament-item.active .type-badge {
  border-color: var(--border-md);
  color: var(--text-dim);
}

/* ─── Property toggles ──────────────────────────────── */

.property-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.property-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}

.property-item:hover {
  background: var(--bg-hover);
}

.property-item input[type="checkbox"] {
  width: 14px;
  height: 14px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.prop-label {
  font-size: 12.5px;
  color: var(--text);
  flex: 1;
}

.prop-unit {
  font-size: 10px;
  font-family: var(--font-mono);
  color: var(--text-dimmer);
}

/* ─── Main content ──────────────────────────────────── */

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 18px 20px 14px;
  overflow: hidden;
  min-width: 0;
}

/* ─── Chart controls bar ────────────────────────────── */

.chart-controls {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.chart-tabs {
  display: flex;
  gap: 3px;
  background: var(--bg-card);
  padding: 3px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.tab-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.tab-btn svg {
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

.tab-btn:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.tab-btn.active {
  background: var(--accent-glow);
  color: var(--accent);
  box-shadow: 0 0 16px rgba(0,212,255,0.12);
}

.tab-btn.active svg {
  opacity: 1;
}

/* Bar property picker */

.bar-controls {
  display: none;
  align-items: center;
  gap: 8px;
}

.bar-controls.visible {
  display: flex;
}

.bar-label {
  font-size: 12px;
  color: var(--text-dim);
}

.styled-select {
  background: var(--bg-card);
  border: 1px solid var(--border-md);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  outline: none;
  transition: border-color 0.15s;
}

.styled-select:focus {
  border-color: var(--accent);
}

.styled-select option {
  background: var(--bg-card);
}

.chart-mode-info {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-dimmer);
  font-style: italic;
}

/* ─── Chart wrapper ─────────────────────────────────── */

.chart-wrapper {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
}

.chart-wrapper canvas {
  display: block;
}

/* Radar: constrain to square-ish */
.chart-wrapper.mode-radar canvas {
  max-width: min(100%, calc(100vh - 200px));
  max-height: calc(100vh - 200px);
}

/* Bar: fill container */
.chart-wrapper.mode-bar canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ─── Empty state ───────────────────────────────────── */

.empty-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  pointer-events: none;
}

.empty-state.hidden {
  display: none;
}

.empty-icon {
  width: 56px;
  height: 56px;
  color: var(--text-dimmer);
  opacity: 0.4;
}

.empty-icon svg {
  width: 100%;
  height: 100%;
}

.empty-state p {
  color: var(--text-dim);
  font-size: 14px;
}

.empty-hint {
  font-size: 12px !important;
  color: var(--text-dimmer) !important;
  font-style: italic;
}

/* ─── Selection pills strip ─────────────────────────── */

.selection-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
  flex-shrink: 0;
  min-height: 28px;
}

.sel-pill {
  display: flex;
  align-items: center;
  gap: clamp(4px, 0.4vw, 7px);
  padding: clamp(3px, 0.3vw, 5px) clamp(8px, 0.7vw, 12px) clamp(3px, 0.3vw, 5px) clamp(6px, 0.5vw, 10px);
  border-radius: 20px;
  font-size: clamp(10px, 0.55vw + 9px, 13px);
  font-weight: 500;
  border: 1px solid;
  cursor: pointer;
  transition: opacity 0.15s, box-shadow 0.2s, transform 0.15s;
  user-select: none;
}

.sel-pill:hover {
  opacity: 0.75;
}

/* JS adds .highlighted on mouseenter — overrides hover dim, adds neon glow */
.sel-pill.highlighted {
  opacity: 1 !important;
  box-shadow: 0 0 8px currentColor, 0 0 18px currentColor;
  transform: scale(1.04);
}

.sel-pill-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.sel-pill-remove {
  font-size: 14px;
  line-height: 1;
  opacity: 0.6;
  margin-left: 2px;
}

/* ─── Filter rows (type label + maker label) ────────── */

.filter-row {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  margin-bottom: 8px;
}

.filter-row-label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--text-dimmer);
  padding-top: 5px;
  min-width: 30px;
  flex-shrink: 0;
  line-height: 1.6;
}

/* Pills inside a filter-row — flex-wrap, no extra bottom margin */
.filter-row-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 0;
}

/* ─── Maker pills ───────────────────────────────────── */

.maker-pill {
  padding: 3px 9px;
  border-radius: 12px;
  font-size: 10.5px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.3px;
  border: 1px solid var(--border);
  color: var(--text-dimmer);
  background: transparent;
  cursor: pointer;
  transition: all 0.15s;
  line-height: 1.6;
}

.maker-pill:hover {
  border-color: var(--border-md);
  color: var(--text-dim);
}

.maker-pill.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

/* ─── Animations ────────────────────────────────────── */

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.filament-item, .property-item {
  animation: fadeIn 0.2s ease both;
}