/* ============================================================
   TWEET — UI Components
   ============================================================ */

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  border-radius: var(--radius-none);
  transition: var(--transition-fast);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.05);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.3s var(--ease-luxury);
  z-index: -1;
}

.btn:hover::before {
  transform: scaleY(1);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-white);
  color: var(--color-primary);
}
.btn-primary:hover::before {
  background-color: rgba(0,0,0,0.05);
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-white);
  border: 1px solid var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  border-color: var(--color-secondary-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  background-color: var(--color-gray-100);
}

.btn-white {
  background-color: var(--color-white);
  color: var(--color-primary);
  border: 1px solid var(--color-white);
}

.btn-white:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Sizes */
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-base); }
.btn-icon { padding: var(--space-2); border-radius: 50%; aspect-ratio: 1/1; }

/* ── Forms ── */
.form-group {
  margin-bottom: var(--space-4);
  position: relative;
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-2);
  color: var(--color-gray-700);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-primary);
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-none);
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.form-control::placeholder {
  color: var(--color-gray-400);
}

textarea.form-control {
  min-height: 120px;
}

.form-error {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: var(--space-1);
  min-height: 16px;
}
.form-control.is-invalid {
  border-color: var(--color-error);
}

/* Checkbox & Radio */
.checkbox-wrap, .radio-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}
.checkbox-wrap input, .radio-wrap input {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* ── Cards ── */
.card {
  background: var(--color-white);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: var(--transition-base);
}

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

/* Product Card */
.product-card {
  position: relative;
  background: var(--color-white);
  transition: var(--transition-base);
  group: product; /* useful for hover states if using utility classes */
}

.product-card-img-wrap {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/4;
  background: var(--color-gray-100);
}

.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slower) var(--ease-luxury);
}
.product-card-img-hover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-luxury);
}

.product-card:hover .product-card-img {
  transform: scale(1.05);
}
.product-card:hover .product-card-img-hover {
  opacity: 1;
}

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

.badge {
  display: inline-block;
  padding: 4px 8px;
  font-size: 10px;
  font-weight: var(--weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: var(--color-primary);
  color: var(--color-white);
}

.badge-new { background: var(--color-primary); }
.badge-sale { background: var(--color-error); }
.badge-soldout { background: var(--color-gray-500); }

.product-card-actions {
  position: absolute;
  bottom: var(--space-3);
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  opacity: 0;
  display: flex;
  gap: var(--space-2);
  z-index: 2;
  transition: var(--transition-normal);
  width: 90%;
}
.product-card:hover .product-card-actions {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}
.product-card-btn {
  flex: 1;
  background: var(--color-white);
  color: var(--color-primary);
  border: none;
  padding: var(--space-2);
  font-size: var(--text-sm);
  text-transform: uppercase;
  font-weight: var(--weight-medium);
  transition: var(--transition-fast);
}
.product-card-btn:hover {
  background: var(--color-primary);
  color: var(--color-white);
}
.product-card-wishlist {
  background: var(--color-white);
  color: var(--color-primary);
  border: none;
  padding: var(--space-2);
  width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}
.product-card-wishlist:hover, .product-card-wishlist.active {
  color: var(--color-error);
}

.product-card-info {
  padding: var(--space-3) 0;
  text-align: center;
}

.product-card-brand {
  font-size: var(--text-xs);
  color: var(--color-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}

.product-card-title {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-1);
  color: var(--color-primary);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-price {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

/* ── Modals ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--glass-bg-dark);
  backdrop-filter: var(--glass-blur-sm);
  -webkit-backdrop-filter: var(--glass-blur-sm);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

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

.modal-content {
  background: var(--color-white);
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-2xl);
  transform: translateY(20px) scale(0.95);
  transition: var(--transition-normal);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-overlay.active .modal-content {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin: 0;
}
.modal-close {
  background: none;
  border: none;
  font-size: var(--text-xl);
  color: var(--color-gray-500);
  cursor: pointer;
  transition: var(--transition-fast);
}
.modal-close:hover {
  color: var(--color-primary);
}

.modal-body {
  padding: var(--space-6);
}

/* ── Toasts / Notifications ── */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 250px;
  animation: toastIn var(--duration-fast) var(--ease-standard);
}
.toast.hiding {
  animation: toastOut var(--duration-fast) var(--ease-standard) forwards;
}

.toast-icon { font-size: 1.2em; }
.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-error); }
.toast-info { border-left: 4px solid var(--color-info); }

/* ── Tabs ── */
.tabs-nav {
  display: flex;
  gap: var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  margin-bottom: var(--space-6);
}

.tab-btn {
  background: none;
  border: none;
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  color: var(--color-gray-500);
  position: relative;
}

.tab-btn::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.tab-btn.active { color: var(--color-primary); }
.tab-btn.active::after { transform: scaleX(1); }

.tab-pane { display: none; }
.tab-pane.active {
  display: block;
  animation: fadeIn var(--duration-normal) var(--ease-standard);
}

/* ── Breadcrumbs ── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.breadcrumb-link {
  color: inherit;
  transition: color var(--transition-fast);
}
.breadcrumb-link:hover { color: var(--color-primary); }
.breadcrumb-separator { color: var(--color-gray-300); }
.breadcrumb-current { color: var(--color-primary); font-weight: var(--weight-medium); }

/* ── Accordion / FAQ ── */
.accordion-item {
  border-bottom: 1px solid var(--color-gray-200);
}

.accordion-header {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) 0;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: var(--weight-medium);
  text-align: left;
  cursor: pointer;
  color: var(--color-primary);
}

.accordion-icon {
  transition: transform var(--transition-normal);
}
.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-normal) var(--ease-standard);
}
.accordion-inner {
  padding-bottom: var(--space-4);
  color: var(--color-gray-600);
  line-height: var(--leading-relaxed);
}

/* ── Drawer (Side Panel) ── */
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}
.drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 400px;
  height: 100vh;
  background: var(--color-white);
  z-index: calc(var(--z-modal) + 1);
  transition: right var(--duration-normal) var(--ease-luxury);
  display: flex;
  flex-direction: column;
}

.drawer.left { left: -100%; right: auto; transition: left var(--duration-normal) var(--ease-luxury); }

.drawer-overlay.active + .drawer,
.drawer.active { right: 0; }
.drawer.left.active { left: 0; }

.drawer-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-6);
}
.drawer-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}