/* ==========================================================================
   KickAssCars.com -Build Calculator / Power Builder
   ========================================================================== */

/* ── Builder Layout ─────────────────────────────────────────────────────── */

.builder-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--space-xl);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md);
}

@media (max-width: 1024px) {
  .builder-layout {
    grid-template-columns: 1fr;
  }
}

.builder-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  position: sticky;
  top: calc(var(--header-height) + var(--space-md));
  max-height: calc(100vh - var(--header-height) - var(--space-xl));
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.builder-sidebar::-webkit-scrollbar {
  width: 6px;
}

.builder-sidebar::-webkit-scrollbar-thumb {
  background-color: var(--border-strong);
  border-radius: 3px;
}

@media (max-width: 1024px) {
  .builder-sidebar {
    position: static;
    max-height: none;
  }
}

.sidebar-section {
  margin-bottom: var(--space-md);
}

.sidebar-section h3 {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
}

/* ── Collapsed platform state ──────────────────────────────────────────── */

.sidebar-section.collapsed #platformSearch,
.sidebar-section.collapsed .platform-picker {
  display: none;
}

.platform-selected-compact {
  display: none;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--primary-muted);
  border: 1px solid var(--primary);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base);
}

.platform-selected-compact:hover {
  background-color: var(--bg-hover);
}

.platform-selected-compact .compact-info {
  flex: 1;
  min-width: 0;
}

.platform-selected-compact .compact-info strong {
  display: block;
  font-size: 0.875rem;
  color: var(--text);
}

.platform-selected-compact .compact-info span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.platform-selected-compact .compact-change {
  font-size: 0.6875rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  flex-shrink: 0;
}

.sidebar-section.collapsed .platform-selected-compact {
  display: flex;
}

.builder-main {
  min-width: 0;
}

/* ==========================================================================
   Platform Picker
   ========================================================================== */

.platform-picker {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  max-height: 400px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}

.platform-picker::-webkit-scrollbar {
  width: 6px;
}

.platform-picker::-webkit-scrollbar-thumb {
  background-color: var(--border-strong);
  border-radius: 3px;
}

.platform-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-base), background-color var(--transition-base);
  background-color: transparent;
  text-align: left;
  width: 100%;
}

.platform-card:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-hover);
}

.platform-card.selected {
  border-color: var(--primary);
  background-color: var(--primary-muted);
}

.platform-card-img {
  width: 48px;
  height: 36px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  background-color: var(--surface);
}

.platform-card-img-placeholder {
  background-color: var(--surface);
}

.platform-card-info {
  flex: 1;
  min-width: 0;
}

.platform-card-info strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--text);
  margin-bottom: 2px;
}

.platform-card-info span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ── Selected Platform Banner ───────────────────────────────────────────── */

.platform-selected {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  border: 1px solid var(--primary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-xl);
  background-color: var(--primary-muted);
}

.platform-banner-img {
  width: 140px;
  height: 90px;
  object-fit: cover;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.platform-banner-info h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  text-transform: uppercase;
  margin: 0 0 var(--space-xs) 0;
}

.platform-banner-specs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.platform-banner-specs span {
  white-space: nowrap;
}

.platform-banner-specs span + span::before {
  content: '\00B7';
  margin-right: var(--space-sm);
  color: var(--text-subtle);
}

/* ==========================================================================
   Category Accordion / Parts List
   ========================================================================== */

#categoriesSection h3 {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: var(--space-md);
}

.category-section {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 8px;
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  cursor: pointer;
  width: 100%;
  background-color: transparent;
  border: none;
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 600;
  text-align: left;
  transition: background-color var(--transition-base);
}

.category-header:hover {
  background-color: var(--bg-hover);
}

.category-check {
  color: var(--success);
  font-weight: 700;
}

.category-header .chevron {
  color: var(--text-subtle);
  transition: transform var(--transition-base);
  font-size: 0.75rem;
}

.category-section.open .category-header .chevron {
  transform: rotate(180deg);
}

.category-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  font-size: 0.6875rem;
  font-weight: 700;
  background-color: var(--surface);
  color: var(--text-muted);
  border-radius: var(--radius-full);
  margin-left: var(--space-sm);
}

.category-parts {
  padding: 0 var(--space-md) var(--space-md);
  display: none;
  flex-direction: column;
  gap: 4px;
}

.category-section.open .category-parts {
  display: flex;
}

/* ── Part Toggle ────────────────────────────────────────────────────────── */

.part-toggle {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-base), background-color var(--transition-base);
  background-color: transparent;
  width: 100%;
  text-align: left;
}

.part-toggle:hover {
  border-color: var(--border-strong);
  background-color: var(--bg-hover);
}

.part-toggle.selected {
  border-color: var(--primary);
  background-color: var(--primary-muted);
}

.part-toggle.conflict {
  border-color: var(--error);
  background-color: var(--error-muted);
}

.part-toggle-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.part-toggle-name {
  font-size: 0.8125rem;
  color: var(--text);
}

.part-toggle-bottom {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
}

.gain-hp {
  color: var(--success);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
}

.gain-tq {
  color: var(--accent);
  font-size: 0.75rem;
}

.part-buy-link {
  display: inline-block;
  margin-left: auto;
  padding: 1px 6px;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background-color var(--transition-base), color var(--transition-base);
}

.part-buy-link:hover {
  background-color: var(--primary);
  color: var(--bg);
  text-decoration: none;
}

.part-toggle-check {
  width: 20px;
  text-align: center;
  color: var(--primary);
  flex-shrink: 0;
  font-size: 0.875rem;
}

/* ==========================================================================
   Builder Results
   ========================================================================== */

.builder-results {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  background-color: var(--bg-card);
}

.builder-results h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-lg);
}

.results-display {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.result-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-md);
  min-width: 140px;
}

.result-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.result-numbers {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
}

.result-stock {
  color: var(--text-muted);
  font-size: 1.5rem;
  font-family: var(--font-heading);
}

.result-arrow {
  color: var(--text-subtle);
  font-size: 1rem;
}

.result-total {
  font-size: 2.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}

.result-card-cost .result-cost {
  font-size: 1.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text);
}

/* ── HP Bar ─────────────────────────────────────────────────────────────── */

.hp-bar {
  height: 16px;
  background-color: var(--surface);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
  margin-top: var(--space-sm);
}

.hp-bar-stock {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background-color: #444;
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

.hp-bar-gain {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--primary-hover));
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* ── Breakdown Table ────────────────────────────────────────────────────── */

.results-breakdown {
  margin-top: var(--space-xl);
}

.results-breakdown h3 {
  font-size: 1rem;
  margin-bottom: var(--space-md);
}

.breakdown-table {
  width: 100%;
  border-collapse: collapse;
}

.breakdown-table th {
  text-align: left;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border-strong);
}

.breakdown-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
  color: var(--text);
}

.breakdown-table tr:last-child td {
  border-bottom: none;
}

.modifier-row {
  background-color: var(--surface);
  font-style: italic;
}

.modifier-row td {
  color: var(--text-muted);
}

.total-row {
  font-weight: 700;
}

.total-row td {
  border-top: 2px solid var(--primary);
  border-bottom: none;
  font-family: var(--font-heading);
  font-size: 1rem;
}

.loss-hp {
  color: var(--error);
}

/* ── Weight Display ────────────────────────────────────────────────────── */

.result-unit {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ── Traction Section ──────────────────────────────────────────────────── */

.traction-section {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
}

.traction-section h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.traction-options {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.traction-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 100px;
  text-align: center;
}

.traction-option input[type="radio"] { display: none; }

.traction-option:hover {
  border-color: var(--primary);
}

.traction-option.selected {
  border-color: var(--primary);
  background: var(--primary-muted);
}

.traction-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
}

.traction-desc {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Race CTA Button ──────────────────────────────────────────────────── */

.btn-accent {
  background: var(--accent);
  color: var(--text);
  border: none;
  font-family: var(--font-heading);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-accent:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-glow-blue);
}

/* ── Save Build Section ─────────────────────────────────────────────────── */

.save-build-section {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
}

.save-build-section .form-input {
  flex: 1;
}

/* ── Mobile Part Selection ──────────────────────────────────────────────── */

.part-selection-mobile {
  display: none;
}

@media (max-width: 1024px) {
  .part-selection-mobile {
    display: block;
    margin-bottom: var(--space-xl);
  }

  .builder-sidebar {
    display: none;
  }

  .builder-layout {
    grid-template-columns: 1fr;
  }

  .builder-layout.show-sidebar .builder-sidebar {
    display: flex;
  }

  .results-display {
    gap: var(--space-md);
  }

  .result-card {
    min-width: 100px;
  }

  .result-total {
    font-size: 2rem;
  }

  .result-stock {
    font-size: 1.25rem;
  }

  .platform-selected {
    flex-direction: column;
    text-align: center;
  }

  .platform-banner-specs {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .results-display {
    flex-direction: column;
    align-items: center;
  }

  .breakdown-table {
    font-size: 0.8125rem;
  }

  .breakdown-table th,
  .breakdown-table td {
    padding: var(--space-xs) var(--space-sm);
  }
}

/* ── Suggest Part / Platform ──────────────────────────────────────────── */

.suggest-link {
  display: block;
  margin-top: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--primary);
  text-decoration: none;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.suggest-link:hover {
  opacity: 1;
  text-decoration: underline;
}

.suggest-part-btn {
  width: 100%;
  margin-top: var(--space-md);
  font-size: 0.8125rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ── Car Context Banner ──────────────────────────────────────────────── */

.car-context-banner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background-color: var(--primary-muted);
  border: 1px solid var(--primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.car-context-banner strong {
  color: var(--text);
}