/**
 * Component Library - Resales Modern Plugin
 * 
 * Reusable UI components for consistent design system
 * Mobile-first, accessible, and performance optimized
 * 
 * @package ResalesModern
 * @version 1.0.0
 */

/* =========================================================================
   BUTTONS
   ========================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--btn-padding-y) var(--btn-padding-x);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-colors), var(--transition-shadow);
  -webkit-user-select: none;
  user-select: none;
}

.btn:focus-visible {
  outline: var(--border-width-2) solid var(--color-primary);
  outline-offset: var(--focus-ring-offset);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */

/* Primary Button */
.btn-primary {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  box-shadow: var(--shadow-primary);
  text-decoration: none;
}

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

/* Secondary Button */
.btn-secondary {
  color: var(--color-text-inverse);
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-hover);
  border-color: var(--color-secondary-hover);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

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

/* Accent Button */
.btn-accent {
  color: var(--color-primary);
  background-color: var(--color-accent);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: var(--shadow-accent);
  text-decoration: none;
}

.btn-accent:active {
  background-color: var(--color-accent-active);
  border-color: var(--color-accent-active);
}

/* Outline Button */
.btn-outline {
  color: var(--color-primary);
  background-color: transparent;
  border-color: var(--color-primary);
}

.btn-outline:hover {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  text-decoration: none;
}

/* Ghost Button */
.btn-ghost {
  color: var(--color-primary);
  background-color: transparent;
  border-color: transparent;
}

.btn-ghost:hover {
  background-color: var(--color-bg-light);
  text-decoration: none;
}

/* Link Button */
.btn-link {
  color: var(--color-primary);
  background-color: transparent;
  border-color: transparent;
  padding: 0;
  height: auto;
}

.btn-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Button Sizes */

.btn-sm {
  height: var(--btn-height-sm);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn-lg {
  height: var(--btn-height-lg);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

/* Button States */

.btn-icon-only {
  padding: var(--space-3);
  aspect-ratio: 1;
}

.btn-full {
  width: 100%;
}

.btn-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-loading::after {
  content: "";
  position: absolute;
  width: 1rem;
  height: 1rem;
  top: 50%;
  left: 50%;
  margin-left: -0.5rem;
  margin-top: -0.5rem;
  border: 2px solid currentColor;
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =========================================================================
   CARDS
   ========================================================================= */

.card {
  background-color: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: var(--transition-shadow);
}

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

.card-header {
  padding: var(--card-padding);
  border-bottom: var(--border-width) solid var(--color-border);
}

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

.card-footer {
  padding: var(--card-padding);
  border-top: var(--border-width) solid var(--color-border);
  background-color: var(--color-bg-light);
}

/* Card Variants */

.card-elevated {
  border: none;
  box-shadow: var(--shadow-lg);
}

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

.card-flat {
  box-shadow: none;
}

.card-bordered {
  border-width: var(--border-width-2);
  border-color: var(--color-primary);
}

/* Card Sizes */

.card-sm .card-body,
.card-sm .card-header,
.card-sm .card-footer {
  padding: var(--card-padding-sm);
}

.card-lg .card-body,
.card-lg .card-header,
.card-lg .card-footer {
  padding: var(--card-padding-lg);
}

/* =========================================================================
   BADGES & LABELS
   ========================================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
}

.badge-secondary {
  color: var(--color-text-inverse);
  background-color: var(--color-secondary);
}

.badge-accent {
  color: var(--color-primary);
  background-color: var(--color-accent);
}

.badge-success {
  color: var(--color-text-inverse);
  background-color: var(--color-success);
}

.badge-warning {
  color: var(--color-primary);
  background-color: var(--color-warning);
}

.badge-error {
  color: var(--color-text-inverse);
  background-color: var(--color-error);
}

.badge-info {
  color: var(--color-text-inverse);
  background-color: var(--color-info);
}

/* Badge with dot indicator */
.badge-dot::before {
  content: "";
  display: inline-block;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: currentColor;
  margin-right: var(--space-1);
}

/* =========================================================================
   ALERTS & NOTIFICATIONS
   ========================================================================= */

.alert {
  padding: var(--space-4);
  border: var(--border-width) solid transparent;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.alert-success {
  color: var(--color-success-dark);
  background-color: var(--color-success-light);
  border-color: var(--color-success);
}

.alert-warning {
  color: var(--color-warning-dark);
  background-color: var(--color-warning-light);
  border-color: var(--color-warning);
}

.alert-error {
  color: var(--color-error-dark);
  background-color: var(--color-error-light);
  border-color: var(--color-error);
}

.alert-info {
  color: var(--color-info-dark);
  background-color: var(--color-info-light);
  border-color: var(--color-info);
}

/* =========================================================================
   LOADING STATES
   ========================================================================= */

.spinner {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm {
  width: 1rem;
  height: 1rem;
  border-width: 2px;
}

.spinner-lg {
  width: 3rem;
  height: 3rem;
  border-width: 4px;
}

/* Skeleton Loader */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-light) 0%,
    var(--color-bg-dark) 50%,
    var(--color-bg-light) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

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

.skeleton-text {
  height: 1rem;
  margin-bottom: var(--space-2);
}

.skeleton-title {
  height: 2rem;
  margin-bottom: var(--space-4);
  width: 60%;
}

.skeleton-image {
  height: 200px;
  width: 100%;
}

/* =========================================================================
   FORM COMPONENTS
   ========================================================================= */

.form-group {
  margin-bottom: var(--space-6);
}

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

.form-label-required::after {
  content: " *";
  color: var(--color-error);
}

.form-input {
  display: block;
  width: 100%;
  padding: var(--input-padding-y) var(--input-padding-x);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--input-radius);
  transition: var(--transition-colors);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: var(--focus-ring);
}

.form-input-error {
  border-color: var(--color-error);
}

.form-input-error:focus {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-light);
}

.form-help {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-subtext);
}

.form-error {
  display: block;
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-error);
}

/* Input Group (with icon) */
.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input-group-icon {
  position: absolute;
  left: var(--space-4);
  color: var(--color-subtext);
  pointer-events: none;
}

.input-group-icon + .form-input {
  padding-left: var(--space-10);
}

/* =========================================================================
   DIVIDERS
   ========================================================================= */

.divider {
  border: 0;
  border-top: var(--border-width) solid var(--color-border);
  margin: var(--space-6) 0;
}

.divider-vertical {
  display: inline-block;
  width: var(--border-width);
  height: 1.5rem;
  background-color: var(--color-border);
  margin: 0 var(--space-4);
  vertical-align: middle;
}

/* =========================================================================
   PAGINATION
   ========================================================================= */

.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
}

.pagination-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text);
  background-color: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-colors);
}

.pagination-item:hover {
  background-color: var(--color-bg-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagination-item-active {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.pagination-item-disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* =========================================================================
   TABS
   ========================================================================= */

.tabs {
  display: flex;
  border-bottom: var(--border-width) solid var(--color-border);
  gap: var(--space-2);
}

.tab-item {
  padding: var(--space-3) var(--space-6);
  font-weight: var(--font-medium);
  color: var(--color-text-light);
  background-color: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-colors);
}

.tab-item:hover {
  color: var(--color-primary);
}

.tab-item-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  padding: var(--space-6) 0;
}

/* =========================================================================
   TOOLTIPS
   ========================================================================= */

.tooltip {
  position: relative;
  cursor: help;
}

.tooltip-text {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  z-index: var(--z-tooltip);
  transition: opacity var(--duration-200);
}

.tooltip-text::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--color-primary) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* =========================================================================
   DROPDOWN
   ========================================================================= */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-toggle {
  cursor: pointer;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  margin-top: var(--space-2);
  padding: var(--space-2);
  background-color: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-dropdown);
}

.dropdown-menu.show {
  display: block;
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: left;
  background-color: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-colors);
}

.dropdown-item:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

.dropdown-divider {
  height: var(--border-width);
  margin: var(--space-2) 0;
  background-color: var(--color-border);
}

/* =========================================================================
   RESPONSIVE UTILITIES
   ========================================================================= */

/* Hide on mobile */
@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
}

/* Hide on tablet and up */
@media (min-width: 768px) {
  .hide-tablet {
    display: none !important;
  }
}

/* Hide on desktop */
@media (min-width: 1024px) {
  .hide-desktop {
    display: none !important;
  }
}

/* Show only on mobile */
@media (min-width: 768px) {
  .show-mobile {
    display: none !important;
  }
}