/* ==========================================================================
   components.css — Buttons, sliders, toggles, cards, selectors
   MPP Fitment Studio
   ========================================================================== */

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 7px 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: #0085cc;
  border-color: #0085cc;
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text-primary);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
}

.btn--ghost:hover {
  background: var(--color-surface-2);
  color: var(--color-text-secondary);
}

.btn--full {
  width: 100%;
}

.btn--sm {
  padding: 4px 10px;
  font-size: 11px;
}

/* --------------------------------------------------------------------------
   Range Sliders
   -------------------------------------------------------------------------- */
.control-row {
  margin-bottom: var(--space-4);
}

.control-row__header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 7px;
}

.control-row__label {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.control-row__value {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-accent);
  font-variant-numeric: tabular-nums;
  min-width: 60px;
  text-align: right;
}

.control-row__value.warn {
  color: var(--color-warning);
}

.control-row__value.danger {
  color: var(--color-danger);
}

/* Slider track */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 3px;
  background: var(--color-border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

/* Filled portion — drawn via JS gradient */
input[type="range"].filled {
  background: linear-gradient(
    to right,
    var(--color-accent) var(--fill-pct, 50%),
    var(--color-border) var(--fill-pct, 50%)
  );
}

/* Slider thumb — WebKit */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid #fff;
  cursor: pointer;
  transition: transform var(--transition-fast);
  box-shadow: 0 0 0 2px var(--color-accent-dim);
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

input[type="range"]::-webkit-slider-thumb:active {
  transform: scale(1.1);
}

/* Slider thumb — Firefox */
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid #fff;
  cursor: pointer;
  box-shadow: 0 0 0 2px var(--color-accent-dim);
}

/* Dual-label row (e.g. Front / Rear linked controls) */
.control-row--dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.control-row__sub-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 5px;
}

/* --------------------------------------------------------------------------
   Toggle Switches
   -------------------------------------------------------------------------- */
.toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 5px 0;
}

.toggle-row__label {
  font-size: 12px;
  color: var(--color-text-secondary);
}

.toggle {
  position: relative;
  width: 36px;
  height: 20px;
  background: var(--color-border);
  border-radius: 10px;
  cursor: pointer;
  border: none;
  transition: background var(--transition-normal);
  flex-shrink: 0;
}

.toggle.on {
  background: var(--color-accent);
}

.toggle::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  background: #fff;
  border-radius: 50%;
  top: 3px;
  left: 3px;
  transition: transform var(--transition-normal);
}

.toggle.on::after {
  transform: translateX(16px);
}

/* --------------------------------------------------------------------------
   Car Selector Cards
   -------------------------------------------------------------------------- */
.car-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.car-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  cursor: pointer;
  transition: border-color var(--transition-fast), background var(--transition-fast);
  position: relative;
  text-align: left;
}

.car-card:hover {
  border-color: var(--color-border-strong);
  background: var(--color-surface-3);
}

.car-card.selected {
  border-color: var(--color-accent);
  background: rgba(0, 150, 230, 0.06);
}

/* Selected indicator dot */
.car-card.selected::after {
  content: '';
  position: absolute;
  top: 8px;
  right: 8px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.car-card__name {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.car-card__year {
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

.car-card__brand {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

/* --------------------------------------------------------------------------
   Wheel Style Cards
   -------------------------------------------------------------------------- */
.wheel-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.wheel-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  aspect-ratio: 1;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: border-color var(--transition-fast);
  position: relative;
  padding: var(--space-2);
}

.wheel-card:hover {
  border-color: var(--color-border-strong);
}

.wheel-card.selected {
  border-color: var(--color-accent);
  background: rgba(0, 150, 230, 0.06);
}

.wheel-card__canvas {
  width: 46px;
  height: 46px;
  border-radius: 50%;
}

.wheel-card__name {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-align: center;
  line-height: 1.3;
}

/* --------------------------------------------------------------------------
   Wheel Spec Inputs (diameter / width / offset)
   -------------------------------------------------------------------------- */
.wheel-spec-group {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}

.wheel-spec-group__title {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.wheel-spec-fields {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
}

.spec-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.spec-field__label {
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.spec-field__input {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 8px;
  width: 100%;
  outline: none;
  transition: border-color var(--transition-fast);
  font-variant-numeric: tabular-nums;
}

.spec-field__input:focus {
  border-color: var(--color-accent);
}

.spec-field__unit {
  font-size: 9px;
  color: var(--color-text-muted);
  text-align: right;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   Tyre Size Inputs
   -------------------------------------------------------------------------- */
.tyre-size-display {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
  text-align: center;
}

.tyre-size-display__size {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.tyre-size-display__label {
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 2px;
}

.tyre-size-display__od {
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

.tyre-size-display__wheel {
  font-size: 15px;
  color: var(--color-accent);
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* --------------------------------------------------------------------------
   Paint Colour Swatches
   -------------------------------------------------------------------------- */
.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.swatch {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  outline: 2px solid transparent;
  transition: outline-color var(--transition-fast), transform var(--transition-fast);
}

.swatch:hover {
  transform: scale(1.12);
}

.swatch.selected {
  outline-color: var(--color-accent);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Camber Link Selector (UCA / LCA buttons)
   -------------------------------------------------------------------------- */
.link-selector {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.link-btn {
  flex: 1;
  padding: 7px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.link-btn:hover {
  border-color: var(--color-border-strong);
  color: var(--color-text-secondary);
}

.link-btn.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(0, 150, 230, 0.08);
}

/* --------------------------------------------------------------------------
   Suspension Diagram (2D side-view SVG panel)
   -------------------------------------------------------------------------- */
.susp-diagram {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-bottom: var(--space-3);
}

.susp-diagram svg {
  width: 100%;
  display: block;
}

/* SVG element classes */
.arm-uca   { stroke: var(--color-uca);    stroke-width: 2; fill: none; }
.arm-lca   { stroke: var(--color-lca);    stroke-width: 2; fill: none; }
.arm-upright { stroke: var(--color-upright); stroke-width: 1.5; fill: none; stroke-dasharray: 3,2; }
.pickup-dot { fill: var(--color-pickup); }
.ground-line { stroke: var(--color-border-strong); stroke-width: 1; fill: none; stroke-dasharray: 4,4; }
.camber-label { font-size: 10px; fill: var(--color-text-muted); font-family: var(--font-ui); }

/* --------------------------------------------------------------------------
   Compare Tab — OEM vs current size visualizer + fitment cards
   -------------------------------------------------------------------------- */
.compare-visual {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.compare-visual__stage {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 1;
}

.compare-visual__canvas,
.compare-visual__overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  border-radius: var(--radius-sm);
}

.compare-visual__overlay {
  pointer-events: none;
}

.compare-visual__captions {
  display: flex;
  margin-top: var(--space-2);
}

.compare-visual__caption {
  flex: 1;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  text-align: center;
}

.compare-visual__legend {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-3);
  font-size: 11px;
  color: var(--color-text-secondary);
}

.compare-visual__legend-item {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.compare-visual__swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 3px;
}

.compare-visual__swatch--new {
  background: #2b2b2e;
}

.compare-visual__swatch--oem {
  background: transparent;
  border: 2px dashed #ffcc33;
}

.compare-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}

.compare-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.compare-card__label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.compare-card__value {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.compare-card__sub {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   Aero Part Toggles — visual list
   -------------------------------------------------------------------------- */
.aero-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.aero-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.aero-item__info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.aero-item__name {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.aero-item__location {
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* --------------------------------------------------------------------------
   Notification / Toast
   -------------------------------------------------------------------------- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  padding: 10px 18px;
  font-size: 12px;
  color: var(--color-text-secondary);
  white-space: nowrap;
  opacity: 0;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  pointer-events: none;
  z-index: 9999;
  border-radius: var(--radius-sm);
}

.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* --------------------------------------------------------------------------
   Separator
   -------------------------------------------------------------------------- */
.sep {
  height: 1px;
  background: var(--color-border-subtle);
  margin: var(--space-3) 0;
}
/* ── Wheel finish buttons ─────────────────────────────────────────────────── */
.finish-btn {
  padding: 5px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  color: var(--color-text-secondary);
  font-size: 11px;
  font-family: var(--font-ui);
  cursor: pointer;
  transition: all 0.15s;
}
.finish-btn:hover  { border-color: var(--color-accent); color: var(--color-accent); }
.finish-btn.active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }

/* ── Wheel color swatches ─────────────────────────────────────────────────── */
.wheel-color-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.12s, border-color 0.12s;
  display: inline-block;
}
.wheel-color-swatch:hover     { transform: scale(1.15); }
.wheel-color-swatch.selected  { border-color: var(--color-accent); border-width: 2px; transform: scale(1.1); }
.wheel-color-swatch--custom   { display: inline-flex; align-items: center; justify-content: center; }