/* ==========================================================================
   TH Heritage Cabinetry Component Styles
   Reusable UI elements: buttons, cards, badges, inputs, nav, footer
   ========================================================================== */

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  height: 48px;
  padding: 0 28px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-label-lg-size);
  font-weight: var(--text-label-lg-weight);
  letter-spacing: var(--text-label-lg-tracking);
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-normal),
              color var(--transition-normal),
              box-shadow var(--transition-normal),
              transform var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-tertiary);
  color: var(--color-on-tertiary);
}

.btn-primary:hover {
  background-color: #7C3610;
  box-shadow: var(--shadow-md);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-tertiary);
  outline-offset: 3px;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-outline-variant);
}

.btn-secondary:hover {
  background-color: var(--color-surface-container);
  border-color: var(--color-outline);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-on-surface-variant);
  height: 40px;
  padding: 0 16px;
  font-size: var(--text-body-sm-size);
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.btn-ghost:hover {
  background-color: var(--color-surface-container-high);
  color: var(--color-primary);
}

.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: var(--text-label-sm-size);
}

.btn-lg {
  height: 56px;
  padding: 0 36px;
  font-size: var(--text-label-lg-size);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

/* ── Cards ── */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition-normal),
              transform var(--transition-normal);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-product {
  cursor: pointer;
}

.card-product:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.card-product .card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-surface-container);
}

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

.card-product:hover .card-image img {
  transform: scale(1.03);
}

.card-product .card-body {
  padding: var(--space-lg);
}

.card-product .card-category {
  font-size: var(--text-label-sm-size);
  font-weight: var(--text-label-sm-weight);
  letter-spacing: var(--text-label-sm-tracking);
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
  margin-bottom: var(--space-xs);
}

.card-product .card-title {
  font-family: var(--font-display);
  font-size: var(--text-headline-sm-size);
  font-weight: 500;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.card-product .card-price {
  font-family: var(--font-body);
  font-size: var(--text-body-lg-size);
  font-weight: 500;
  color: var(--color-primary);
}

.card-product .card-price .from {
  font-size: var(--text-body-sm-size);
  font-weight: 400;
  color: var(--color-on-surface-variant);
  margin-right: var(--space-xs);
}

.card-elevated {
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-label-sm-size);
  font-weight: var(--text-label-sm-weight);
  letter-spacing: var(--text-label-sm-tracking);
  text-transform: uppercase;
  white-space: nowrap;
}

.badge-success {
  background-color: #DCFCE7;
  color: #166534;
}

.badge-warning {
  background-color: var(--color-tertiary-container);
  color: var(--color-on-tertiary-container);
}

.badge-error {
  background-color: #FEE2E2;
  color: #991B1B;
}

.badge-neutral {
  background-color: var(--color-surface-container-high);
  color: var(--color-on-surface-variant);
}

.badge-info {
  background-color: #DBEAFE;
  color: #1E40AF;
}

/* ── Inputs ── */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.input-group label {
  font-size: var(--text-label-lg-size);
  font-weight: var(--text-label-lg-weight);
  letter-spacing: var(--text-label-lg-tracking);
  text-transform: uppercase;
  color: var(--color-on-surface-variant);
}

.input-field {
  height: 48px;
  padding: 0 var(--space-md);
  background-color: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-body-md-size);
  color: var(--color-on-surface);
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  width: 100%;
}

.input-field::placeholder {
  color: var(--color-outline);
}

.input-field:hover {
  border-color: var(--color-outline);
}

.input-field:focus {
  outline: none;
  border-color: var(--color-tertiary);
  box-shadow: 0 0 0 2px rgba(146, 64, 14, 0.15);
}

textarea.input-field {
  height: auto;
  min-height: 120px;
  padding: var(--space-md);
  resize: vertical;
}

select.input-field {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='%2378716C' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

/* ── Swatch Selector ── */
.swatch-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.swatch-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: border-color var(--transition-fast),
              transform var(--transition-fast),
              box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.swatch-btn:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-sm);
}

.swatch-btn.active {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-primary);
}

.swatch-btn:focus-visible {
  outline: 2px solid var(--color-tertiary);
  outline-offset: 3px;
}

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-outline-variant);
  display: flex;
  align-items: center;
  padding: 0 var(--space-xl);
  z-index: var(--z-sticky);
  transition: box-shadow var(--transition-normal);
}

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

.nav-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: 0;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: var(--text-label-lg-size);
  font-weight: var(--text-label-lg-weight);
  letter-spacing: var(--text-label-lg-tracking);
  text-transform: uppercase;
  color: var(--color-primary);
  text-decoration: none;
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-tertiary);
  transition: width var(--transition-normal);
}

.nav-links a:hover {
  color: var(--color-tertiary);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* ── Language Switcher ── */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-right: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.05em;
}

.btn-lang {
  background: none;
  border: none;
  padding: 4px 4px;
  cursor: pointer;
  color: var(--color-primary);
  font-weight: 600;
  font-size: 13px;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.btn-lang:hover {
  color: var(--color-tertiary);
}

.btn-lang.active {
  color: var(--color-tertiary);
  border-bottom: 2px solid var(--color-tertiary);
}

.lang-divider {
  color: var(--color-outline);
  font-size: 12px;
  user-select: none;
}

/* Mobile Language Switcher */
.mobile-lang-switcher {
  margin-top: var(--space-xl);
  padding: 0 var(--space-lg);
  display: flex;
  gap: var(--space-md);
  font-family: var(--font-body);
}

.mobile-lang-switcher .btn-lang {
  font-size: 15px;
  padding: var(--space-xs) 0;
  color: var(--color-primary);
}

.mobile-lang-switcher .btn-lang.active {
  color: var(--color-tertiary);
  border-bottom: 2px solid var(--color-tertiary);
}

.nav-cart-count {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 18px;
  height: 18px;
  background-color: var(--color-tertiary);
  color: var(--color-on-tertiary);
  font-size: 10px;
  font-weight: 600;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-hamburger {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.nav-hamburger:hover {
  background-color: var(--color-surface-container);
}

.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--color-primary);
  position: relative;
  transition: background-color var(--transition-fast);
}

.nav-hamburger span::before,
.nav-hamburger span::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 2px;
  background-color: var(--color-primary);
  left: 0;
  transition: transform var(--transition-normal);
}

.nav-hamburger span::before { top: -6px; }
.nav-hamburger span::after { top: 6px; }

/* Mobile Nav Overlay */
.nav-mobile-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--color-surface);
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.nav-mobile-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.nav-mobile-overlay a {
  font-family: var(--font-display);
  font-size: var(--text-headline-md-size);
  color: var(--color-primary);
  text-decoration: none;
}

.nav-mobile-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}

/* ── Footer ── */
.footer {
  background-color: var(--color-inverse-surface);
  color: var(--color-inverse-on-surface);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand p {
  color: var(--color-outline);
  max-width: 300px;
  margin-top: var(--space-md);
}

.footer-heading {
  font-family: var(--font-body);
  font-size: var(--text-label-lg-size);
  font-weight: var(--text-label-lg-weight);
  letter-spacing: var(--text-label-lg-tracking);
  text-transform: uppercase;
  color: var(--color-outline);
  margin-bottom: var(--space-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-links a {
  color: var(--color-inverse-on-surface);
  font-size: var(--text-body-sm-size);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-tertiary-container);
}

.footer-bottom {
  border-top: 1px solid var(--color-primary-container);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  color: var(--color-outline);
  font-size: var(--text-body-sm-size);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

/* ── Divider ── */
.divider {
  height: 1px;
  background-color: var(--color-outline-variant);
  border: none;
}

/* ── Tooltip ── */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-xs) var(--space-sm);
  background-color: var(--color-inverse-surface);
  color: var(--color-inverse-on-surface);
  font-size: var(--text-label-sm-size);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
}

/* ── Loading Skeleton ── */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-surface-container) 25%,
    var(--color-surface-container-high) 50%,
    var(--color-surface-container) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-pulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (prefers-reduced-motion: reduce) {
  .skeleton {
    animation: none;
    background: var(--color-surface-container);
  }
}