/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.top-bar {
  background-color: var(--color-petrol-dark);
  color: #DCE5E7;
  font-size: var(--text-xs);
  padding-block: var(--space-2);
  border-block-end: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.top-bar-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.site-header {
  background-color: var(--color-surface);
  border-block-end: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  transition: box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}

.header-logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.header-logo img,
.header-logo svg {
  height: 48px;
  width: auto;
}

/* Header Search Form */
.header-search {
  flex: 1;
  max-width: 540px;
  position: relative;
}

.search-form {
  display: flex;
  align-items: center;
  background-color: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 2px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-form:focus-within {
  border-color: var(--color-petrol);
  box-shadow: var(--shadow-focus);
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding-inline: var(--space-4);
  padding-block: var(--space-2);
  font-family: inherit;
  font-size: var(--text-sm);
  color: var(--color-charcoal);
  outline: none;
}

.search-input::placeholder {
  color: var(--color-charcoal-muted);
}

.search-submit-btn {
  background-color: var(--color-petrol);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-full);
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--transition-fast);
}

.search-submit-btn:hover {
  background-color: var(--color-copper);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.action-btn {
  background: transparent;
  border: none;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-petrol);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  position: relative;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.action-btn:hover {
  background-color: var(--color-surface-subtle);
  color: var(--color-copper);
}

.action-btn .action-badge {
  position: absolute;
  top: 2px;
  inset-inline-end: 2px;
  background-color: var(--color-copper);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  border-radius: var(--radius-full);
  min-width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: 4px;
}

.action-btn .action-label {
  font-size: 11px;
  font-weight: 500;
  margin-block-start: 2px;
}

/* Navigation Bar */
.header-nav {
  background-color: var(--color-surface);
  border-block-start: 1px solid var(--color-border-subtle);
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding-block: var(--space-2);
  overflow-x: auto;
  white-space: nowrap;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding-block: var(--space-2);
  padding-inline: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-petrol);
  border-block-end: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-copper);
  border-block-end-color: var(--color-copper);
}

.nav-link.special-cta {
  background-color: var(--color-copper);
  color: #ffffff !important;
  padding-inline: var(--space-4);
  border-radius: var(--radius-full);
  border-block-end: none;
  margin-inline-start: auto;
}

.nav-link.special-cta:hover {
  background-color: var(--color-copper-hover);
}

/* Mobile Navigation Trigger */
.menu-toggle-btn {
  display: none;
  background: transparent;
  border: none;
  width: 44px;
  height: 44px;
  color: var(--color-petrol);
  cursor: pointer;
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
}

/* Mobile Bottom Navigation Bar */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-block-start: 1px solid var(--color-border);
  z-index: var(--z-bottom-nav);
  padding-block-end: env(safe-area-inset-bottom, 8px);
  padding-block-start: 6px;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.bottom-nav-list {
  display: flex;
  justify-content: space-around;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.bottom-nav-item {
  flex: 1;
  text-align: center;
}

.bottom-nav-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-charcoal-muted);
  font-size: 11px;
  font-weight: 600;
  padding-block: 4px;
  position: relative;
  min-height: 48px;
  transition: color var(--transition-fast);
}

.bottom-nav-link.active,
.bottom-nav-link:hover {
  color: var(--color-copper);
}

.bottom-nav-link svg {
  margin-block-end: 2px;
}

.bottom-badge {
  position: absolute;
  top: 2px;
  inset-inline-end: calc(50% - 18px);
  background-color: var(--color-copper);
  color: #ffffff;
  font-size: 10px;
  font-weight: 700;
  border-radius: var(--radius-full);
  min-width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding-inline: 3px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  padding-block: var(--space-3);
  padding-inline: var(--space-5);
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-align: center;
  min-height: 44px;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-petrol);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--color-petrol-dark);
  color: #ffffff;
}

.btn-copper {
  background-color: var(--color-copper);
  color: #ffffff;
}

.btn-copper:hover {
  background-color: var(--color-copper-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--color-surface-subtle);
  color: var(--color-petrol);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: #D6E2DA;
  color: var(--color-petrol);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-petrol);
  border-color: var(--color-petrol);
}

.btn-outline:hover {
  background-color: var(--color-petrol);
  color: #ffffff;
}

.btn-outline-copper {
  background-color: transparent;
  color: var(--color-copper);
  border-color: var(--color-copper);
}

.btn-outline-copper:hover {
  background-color: var(--color-copper);
  color: #ffffff;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-charcoal);
}

.btn-ghost:hover {
  background-color: var(--color-surface-subtle);
  color: var(--color-copper);
}

.btn-sm {
  min-height: 36px;
  padding-block: var(--space-1);
  padding-inline: var(--space-3);
  font-size: var(--text-xs);
}

.btn-lg {
  min-height: 52px;
  padding-block: var(--space-4);
  padding-inline: var(--space-6);
  font-size: var(--text-base);
}

.btn-full {
  width: 100%;
}

.btn:disabled,
.btn.disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   Badges & Tags
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding-block: 2px;
  padding-inline: var(--space-2);
  border-radius: var(--radius-xs);
  font-size: var(--text-xs);
  font-weight: 600;
  line-height: 1.3;
}

.badge-in-stock {
  background-color: var(--color-success-bg);
  color: var(--color-success);
}

.badge-low-stock {
  background-color: var(--color-warning-bg);
  color: var(--color-warning);
}

.badge-out-of-stock {
  background-color: var(--color-danger-bg);
  color: var(--color-danger);
}

.badge-petrol {
  background-color: #E2ECEE;
  color: var(--color-petrol);
}

.badge-copper {
  background-color: var(--color-copper-light);
  color: var(--color-copper);
}

.badge-neutral {
  background-color: #EAEEEE;
  color: var(--color-charcoal-muted);
}

.badge-energy {
  background-color: #0A7A3E;
  color: #ffffff;
  font-weight: 700;
  padding-inline: 6px;
}

/* ==========================================================================
   Product Card
   ========================================================================== */

.product-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #BAC7C7;
}

.product-card-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: #FAFAFA;
  overflow: hidden;
  border-block-end: 1px solid var(--color-border-subtle);
}

.product-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-card:hover .product-card-img-wrap img {
  transform: scale(1.04);
}

.product-card-badges {
  position: absolute;
  top: var(--space-3);
  inset-inline-start: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: 4px;
  z-index: 2;
}

.product-card-wishlist {
  position: absolute;
  top: var(--space-3);
  inset-inline-end: var(--space-3);
  width: 36px;
  height: 36px;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-charcoal-muted);
  cursor: pointer;
  z-index: 2;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.product-card-wishlist:hover,
.product-card-wishlist.active {
  color: var(--color-copper);
  background-color: #ffffff;
}

.product-card-body {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: var(--space-1);
}

.product-brand {
  font-size: var(--text-xs);
  color: var(--color-copper);
  font-weight: 700;
  text-transform: uppercase;
}

.product-model {
  font-size: var(--text-xs);
  color: var(--color-charcoal-muted);
  font-family: var(--font-mono);
}

.product-title {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-petrol);
  margin-block-end: var(--space-2);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.8em;
}

.product-specs-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-block-end: var(--space-3);
}

.spec-chip {
  background-color: var(--color-bg);
  color: var(--color-charcoal-muted);
  font-size: 11px;
  padding-block: 2px;
  padding-inline: 6px;
  border-radius: var(--radius-xs);
}

.product-unit-tag {
  font-size: var(--text-xs);
  color: var(--color-charcoal-muted);
  margin-block-end: var(--space-2);
}

.product-card-footer {
  margin-block-start: auto;
  padding-block-start: var(--space-3);
  border-block-start: 1px dashed var(--color-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.product-price-group {
  display: flex;
  flex-direction: column;
}

.product-price {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-petrol);
  line-height: 1.1;
}

.product-price-currency {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-charcoal-muted);
}

.product-card-actions {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ==========================================================================
   Service Card
   ========================================================================== */

.service-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.service-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-copper);
  box-shadow: var(--shadow-md);
}

.service-card-icon {
  width: 52px;
  height: 52px;
  background-color: var(--color-surface-subtle);
  color: var(--color-petrol);
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-block-end: var(--space-4);
}

.service-card:hover .service-card-icon {
  background-color: var(--color-copper-light);
  color: var(--color-copper);
}

.service-card-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-petrol);
  margin-block-end: var(--space-2);
}

.service-card-desc {
  font-size: var(--text-sm);
  color: var(--color-charcoal-muted);
  margin-block-end: var(--space-4);
  flex: 1;
}

.service-card-meta {
  background-color: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  margin-block-end: var(--space-4);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.service-fee-label {
  font-size: var(--text-xs);
  color: var(--color-charcoal-muted);
}

.service-fee-val {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-petrol);
}

/* ==========================================================================
   Forms & Controls
   ========================================================================== */

.form-group {
  margin-block-end: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-charcoal);
  margin-block-end: var(--space-2);
}

.form-label .required-mark {
  color: var(--color-copper);
  margin-inline-start: 2px;
}

.form-control {
  width: 100%;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-charcoal);
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding-block: var(--space-3);
  padding-inline: var(--space-4);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-petrol);
  box-shadow: var(--shadow-focus);
}

.form-control.is-invalid {
  border-color: var(--color-danger);
}

.form-error {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-danger);
  margin-block-start: var(--space-1);
}

.form-hint {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-charcoal-muted);
  margin-block-start: var(--space-1);
}

/* Radio & Checkbox Tiles */
.choice-tile {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.choice-tile:hover {
  border-color: var(--color-petrol);
  background-color: var(--color-bg);
}

.choice-tile.selected,
.choice-tile:has(input:checked) {
  border-color: var(--color-copper);
  background-color: var(--color-copper-light);
}

/* ==========================================================================
   Breadcrumb
   ========================================================================== */

.breadcrumb {
  padding-block: var(--space-3);
  margin-block-end: var(--space-4);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  list-style: none;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-charcoal-muted);
}

.breadcrumb-item a {
  color: var(--color-charcoal-muted);
}

.breadcrumb-item a:hover {
  color: var(--color-copper);
}

.breadcrumb-separator {
  color: var(--color-border);
}

.breadcrumb-item[aria-current="page"] {
  color: var(--color-petrol);
  font-weight: 600;
}

/* ==========================================================================
   Modals & Drawers
   ========================================================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(26, 52, 56, 0.6);
  backdrop-filter: blur(2px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.modal-backdrop.active .modal-dialog {
  transform: translateY(0);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-block-end: 1px solid var(--color-border);
}

.modal-title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  margin: 0;
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--color-charcoal-muted);
  cursor: pointer;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.modal-close-btn:hover {
  background-color: var(--color-bg);
  color: var(--color-charcoal);
}

.modal-body {
  padding: var(--space-5);
}

.modal-footer {
  padding: var(--space-4) var(--space-5);
  border-block-start: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ==========================================================================
   Toasts (Notification Messages)
   ========================================================================== */

.toast-container {
  position: fixed;
  bottom: var(--space-6);
  inset-inline-end: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 280px;
  max-width: 400px;
  transform: translateY(20px);
  opacity: 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success { border-inline-start: 4px solid var(--color-success); }
.toast-error { border-inline-start: 4px solid var(--color-danger); }
.toast-info { border-inline-start: 4px solid var(--color-info); }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: var(--color-petrol-dark);
  color: #DCE5E7;
  margin-block-start: auto;
  border-block-start: 4px solid var(--color-copper);
  padding-block-start: var(--space-12);
  padding-block-end: var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: var(--space-8);
  margin-block-end: var(--space-10);
}

.footer-brand p {
  color: #B5C4C6;
  font-size: var(--text-sm);
  margin-block-start: var(--space-3);
}

.footer-col h3 {
  color: #ffffff;
  font-size: var(--text-base);
  font-weight: 700;
  margin-block-end: var(--space-4);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-links a {
  color: #B5C4C6;
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #ffffff;
  padding-inline-start: 4px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-block-end: var(--space-3);
  font-size: var(--text-sm);
  color: #B5C4C6;
}

.footer-bottom {
  border-block-start: 1px solid rgba(255, 255, 255, 0.1);
  padding-block-start: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: #92A5A8;
}

.footer-disclaimer {
  background-color: rgba(169, 83, 50, 0.15);
  border: 1px solid rgba(169, 83, 50, 0.3);
  color: #F8D9CE;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  margin-block-end: var(--space-6);
}