/**
 * UUPM (UI UX PRO MAX) REUSABLE COMPONENT SYSTEM
 * Standard CSS classes for all UI elements built strictly on Design Tokens.
 * Standard Prefix: .ds-
 */

/* ==========================================================================
   1. BUTTONS & ICON BUTTONS
   ========================================================================== */
.ds-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ds-space-2);
  font-family: var(--ds-font-family-base);
  font-size: var(--ds-font-size-sm);
  font-weight: var(--ds-font-weight-medium);
  line-height: 1;
  padding: 0.625rem 1.125rem;
  border-radius: var(--ds-radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none !important;
  white-space: nowrap;
  user-select: none;
  transition: background-color var(--ds-transition-fast), 
              border-color var(--ds-transition-fast), 
              color var(--ds-transition-fast), 
              box-shadow var(--ds-transition-fast), 
              transform var(--ds-transition-fast);
}

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

.ds-btn:disabled, .ds-btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary Button (Navy / Indigo Gradient) */
.ds-btn-primary {
  background: linear-gradient(135deg, var(--ds-color-primary) 0%, #1d4ed8 100%);
  border-color: var(--ds-color-primary);
  color: var(--ds-color-primary-contrast) !important;
  box-shadow: 0 2px 6px -1px rgba(37, 99, 235, 0.25);
  transition: all var(--ds-transition-fast);
}

.ds-btn-primary:hover {
  background: linear-gradient(135deg, var(--ds-color-primary-hover) 0%, #1e40af 100%);
  border-color: var(--ds-color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -2px rgba(37, 99, 235, 0.35);
}

/* Secondary Button (Gold Gradient) */
.ds-btn-secondary {
  background: linear-gradient(135deg, var(--ds-color-secondary) 0%, #b45309 100%);
  border-color: var(--ds-color-secondary);
  color: var(--ds-color-secondary-contrast) !important;
  box-shadow: 0 2px 6px -1px rgba(217, 119, 6, 0.25);
  transition: all var(--ds-transition-fast);
}

.ds-btn-secondary:hover {
  background: linear-gradient(135deg, var(--ds-color-secondary-hover) 0%, #92400e 100%);
  border-color: var(--ds-color-secondary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px -2px rgba(217, 119, 6, 0.35);
}

/* Outline Button */
.ds-btn-outline {
  background-color: transparent;
  border-color: var(--ds-border-default);
  color: var(--ds-text-primary) !important;
  transition: all var(--ds-transition-fast);
}

.ds-btn-outline:hover {
  background-color: var(--ds-bg-hover);
  border-color: var(--ds-border-strong);
  color: var(--ds-color-primary) !important;
  transform: translateY(-1px);
}

/* Ghost / Minimal Button */
.ds-btn-ghost {
  background-color: transparent;
  border-color: transparent;
  color: var(--ds-text-muted) !important;
}

.ds-btn-ghost:hover {
  background-color: var(--ds-bg-hover);
  color: var(--ds-text-primary) !important;
}

/* Danger / Destructive Button */
.ds-btn-danger {
  background-color: var(--ds-color-danger);
  border-color: var(--ds-color-danger);
  color: #ffffff !important;
}

.ds-btn-danger:hover {
  background-color: #dc2626;
  border-color: #dc2626;
}

/* Sizes */
.ds-btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--ds-font-size-xs);
  border-radius: var(--ds-radius-sm);
}

.ds-btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: var(--ds-font-size-base);
  border-radius: var(--ds-radius-lg);
}

/* Icon-Only Button */
.ds-btn-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ds-radius-md);
  background-color: transparent;
  border: 1px solid var(--ds-border-default);
  color: var(--ds-text-muted);
  cursor: pointer;
  transition: all var(--ds-transition-fast);
}

.ds-btn-icon:hover {
  background-color: var(--ds-bg-hover);
  color: var(--ds-color-primary);
  border-color: var(--ds-border-strong);
}

.ds-btn-icon-sm {
  width: 30px;
  height: 30px;
  min-width: 30px;
  font-size: var(--ds-font-size-xs);
}

/* ==========================================================================
   2. CARDS & STAT CARDS
   ========================================================================== */
.ds-card {
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-lg);
  box-shadow: var(--ds-shadow-sm);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  margin-bottom: var(--ds-space-6);
  transition: box-shadow var(--ds-transition-base), border-color var(--ds-transition-base);
}

.ds-card-header {
  padding: var(--ds-space-4) var(--ds-space-6);
  border-bottom: 1px solid var(--ds-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-3);
  background-color: var(--ds-bg-surface);
}

.ds-card-title {
  margin: 0;
  font-size: var(--ds-font-size-lg);
  font-weight: var(--ds-font-weight-semibold);
  color: var(--ds-text-primary);
}

.ds-card-body {
  padding: var(--ds-space-6);
  flex-grow: 1;
}

.ds-card-footer {
  padding: var(--ds-space-4) var(--ds-space-6);
  border-top: 1px solid var(--ds-border-subtle);
  background-color: var(--ds-bg-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* SaaS Stat / Metric Card */
.ds-stat-card {
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-lg);
  padding: var(--ds-space-5);
  box-shadow: var(--ds-shadow-sm);
  display: flex;
  align-items: center;
  gap: var(--ds-space-4);
  text-decoration: none !important;
  color: inherit !important;
  position: relative;
  overflow: hidden;
  transition: transform var(--ds-transition-fast), box-shadow var(--ds-transition-fast), border-color var(--ds-transition-fast);
}

.ds-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--ds-shadow-md);
  border-color: var(--ds-border-strong);
}

.ds-stat-icon {
  width: 52px;
  height: 52px;
  min-width: 52px;
  border-radius: var(--ds-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  transition: transform var(--ds-transition-fast);
}

.ds-stat-card:hover .ds-stat-icon {
  transform: scale(1.05);
}

.ds-stat-details {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  overflow: hidden;
}

.ds-stat-value {
  font-size: var(--ds-font-size-3xl);
  font-weight: var(--ds-font-weight-bold);
  color: var(--ds-text-primary);
  line-height: 1.1;
  margin-bottom: var(--ds-space-1);
}

.ds-stat-label {
  font-size: var(--ds-font-size-sm);
  font-weight: var(--ds-font-weight-medium);
  color: var(--ds-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Stat Card Color Variants */
.ds-stat-blue .ds-stat-icon {
  background-color: var(--ds-color-primary-light);
  color: var(--ds-color-primary);
}

.ds-stat-gold .ds-stat-icon {
  background-color: var(--ds-color-secondary-light);
  color: var(--ds-color-secondary);
}

.ds-stat-green .ds-stat-icon {
  background-color: var(--ds-color-success-light);
  color: var(--ds-color-success);
}

.ds-stat-purple .ds-stat-icon {
  background-color: rgba(124, 58, 237, 0.12);
  color: #7c3aed;
}

.ds-stat-red .ds-stat-icon {
  background-color: var(--ds-color-danger-light);
  color: var(--ds-color-danger);
}

/* ==========================================================================
   3. DATA TABLES & RESPONSIVE CONTAINER
   ========================================================================== */
.ds-table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--ds-border-strong) transparent;
}

.ds-table-container::-webkit-scrollbar {
  height: 6px;
}

.ds-table-container::-webkit-scrollbar-thumb {
  background-color: var(--ds-border-strong);
  border-radius: var(--ds-radius-full);
}

.ds-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--ds-font-size-sm);
  color: var(--ds-text-body);
  margin: 0;
}

.ds-table th {
  background-color: var(--ds-bg-muted);
  color: var(--ds-text-primary);
  font-weight: var(--ds-font-weight-semibold);
  text-align: left;
  padding: var(--ds-space-3) var(--ds-space-4);
  border-bottom: 2px solid var(--ds-border-default);
  white-space: nowrap;
  letter-spacing: 0.2px;
}

.ds-table td {
  padding: var(--ds-space-3) var(--ds-space-4);
  border-bottom: 1px solid var(--ds-border-default);
  vertical-align: middle;
}

.ds-table-hover tbody tr {
  transition: background-color var(--ds-transition-fast);
}

.ds-table-hover tbody tr:hover {
  background-color: var(--ds-bg-hover);
}

.ds-th-check {
  width: 44px;
  text-align: center;
}

/* ==========================================================================
   4. SEARCH BOX & FILTER BAR
   ========================================================================== */
.ds-filter-bar {
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-lg);
  padding: var(--ds-space-3) var(--ds-space-4);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--ds-space-3);
  margin-bottom: var(--ds-space-4);
  box-shadow: var(--ds-shadow-xs);
}

.ds-search-box {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 240px;
  flex-grow: 1;
}

.ds-search-icon {
  position: absolute;
  left: 0.875rem;
  color: var(--ds-text-muted);
  pointer-events: none;
}

.ds-search-input {
  width: 100%;
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-md);
  padding: 0.5rem 0.875rem 0.5rem 2.5rem;
  font-size: var(--ds-font-size-sm);
  color: var(--ds-text-primary);
  transition: border-color var(--ds-transition-fast), box-shadow var(--ds-transition-fast);
}

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

/* ==========================================================================
   5. FORM GROUPS & INPUTS
   ========================================================================== */
.ds-form-group {
  margin-bottom: var(--ds-space-4);
}

.ds-form-label {
  display: block;
  font-size: var(--ds-font-size-sm);
  font-weight: var(--ds-font-weight-medium);
  color: var(--ds-text-primary);
  margin-bottom: var(--ds-space-1);
}

.ds-form-control, .ds-select {
  width: 100%;
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-md);
  padding: 0.5625rem 0.875rem;
  font-size: var(--ds-font-size-sm);
  color: var(--ds-text-primary);
  line-height: var(--ds-line-height-normal);
  transition: border-color var(--ds-transition-fast), box-shadow var(--ds-transition-fast);
}

.ds-form-control:focus, .ds-select:focus {
  border-color: var(--ds-border-focus);
  box-shadow: var(--ds-shadow-focus);
  outline: none;
}

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

.ds-form-error {
  display: block;
  font-size: var(--ds-font-size-xs);
  color: var(--ds-color-danger);
  font-weight: var(--ds-font-weight-medium);
  margin-top: var(--ds-space-1);
}

/* ==========================================================================
   6. BADGES & STATUS PILLS
   ========================================================================== */
.ds-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--ds-space-1);
  font-size: var(--ds-font-size-xs);
  font-weight: var(--ds-font-weight-semibold);
  padding: 0.25rem 0.625rem;
  border-radius: var(--ds-radius-sm);
  line-height: 1;
  letter-spacing: 0.2px;
  white-space: nowrap;
}

.ds-badge-pill {
  border-radius: var(--ds-radius-full);
}

.ds-badge-success {
  background-color: var(--ds-color-success-light);
  color: var(--ds-color-success-text);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.ds-badge-warning {
  background-color: var(--ds-color-warning-light);
  color: var(--ds-color-warning-text);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.ds-badge-danger {
  background-color: var(--ds-color-danger-light);
  color: var(--ds-color-danger-text);
  border: 1px solid rgba(239, 68, 68, 0.25);
}

.ds-badge-info {
  background-color: var(--ds-color-info-light);
  color: var(--ds-color-info-text);
  border: 1px solid rgba(2, 132, 199, 0.25);
}

.ds-badge-neutral {
  background-color: var(--ds-bg-muted);
  color: var(--ds-text-muted);
  border: 1px solid var(--ds-border-default);
}

/* ==========================================================================
   7. ALERTS & NOTIFICATION BANNERS
   ========================================================================== */
.ds-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--ds-space-3);
  padding: var(--ds-space-4);
  border-radius: var(--ds-radius-md);
  border: 1px solid transparent;
  margin-bottom: var(--ds-space-4);
  font-size: var(--ds-font-size-sm);
}

.ds-alert-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.ds-alert-content {
  flex-grow: 1;
}

.ds-alert-title {
  margin: 0 0 var(--ds-space-1) 0;
  font-size: var(--ds-font-size-sm);
  font-weight: var(--ds-font-weight-semibold);
}

.ds-alert-text {
  margin: 0;
  line-height: var(--ds-line-height-normal);
}

.ds-alert-success {
  background-color: var(--ds-color-success-light);
  border-color: rgba(16, 185, 129, 0.3);
  color: var(--ds-color-success-text);
}

.ds-alert-warning {
  background-color: var(--ds-color-warning-light);
  border-color: rgba(245, 158, 11, 0.3);
  color: var(--ds-color-warning-text);
}

.ds-alert-danger {
  background-color: var(--ds-color-danger-light);
  border-color: rgba(239, 68, 68, 0.3);
  color: var(--ds-color-danger-text);
}

.ds-alert-info {
  background-color: var(--ds-color-info-light);
  border-color: rgba(2, 132, 199, 0.3);
  color: var(--ds-color-info-text);
}

/* ==========================================================================
   8. MODALS & DRAWERS
   ========================================================================== */
.ds-modal-content {
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-xl);
  box-shadow: var(--ds-shadow-xl);
  overflow: hidden;
}

.ds-modal-header {
  padding: var(--ds-space-4) var(--ds-space-6);
  border-bottom: 1px solid var(--ds-border-subtle);
  background-color: var(--ds-bg-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ds-modal-body {
  padding: var(--ds-space-6);
  background-color: var(--ds-bg-surface);
}

.ds-modal-footer {
  padding: var(--ds-space-4) var(--ds-space-6);
  border-top: 1px solid var(--ds-border-subtle);
  background-color: var(--ds-bg-muted);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--ds-space-2);
}

/* ==========================================================================
   9. EMPTY STATES & SKELETONS
   ========================================================================== */
.ds-empty-state {
  text-align: center;
  padding: var(--ds-space-12) var(--ds-space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ds-empty-icon {
  font-size: 3rem;
  color: var(--ds-text-subtle);
  margin-bottom: var(--ds-space-3);
}

.ds-empty-title {
  margin: 0 0 var(--ds-space-1) 0;
  font-size: var(--ds-font-size-lg);
  font-weight: var(--ds-font-weight-semibold);
  color: var(--ds-text-primary);
}

.ds-empty-text {
  margin: 0;
  font-size: var(--ds-font-size-sm);
  color: var(--ds-text-muted);
  max-width: 420px;
}

/* Skeletons with Shimmer Effect */
.ds-skeleton {
  background: linear-gradient(
    90deg,
    var(--ds-bg-muted) 25%,
    var(--ds-border-default) 50%,
    var(--ds-bg-muted) 75%
  );
  background-size: 200% 100%;
  animation: ds-shimmer 1.5s infinite;
  border-radius: var(--ds-radius-sm);
  display: inline-block;
}

@keyframes ds-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.ds-skeleton-title {
  height: 24px;
  width: 50%;
  margin-bottom: var(--ds-space-2);
}

.ds-skeleton-text {
  height: 14px;
  width: 100%;
  margin-bottom: var(--ds-space-2);
}

.ds-skeleton-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--ds-radius-full);
}

/* ==========================================================================
   10. AVATARS & PAGE HEADERS
   ========================================================================== */
.ds-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--ds-radius-full);
  overflow: hidden;
  background-color: var(--ds-color-primary-light);
  color: var(--ds-color-primary);
  font-weight: var(--ds-font-weight-semibold);
  border: 1px solid var(--ds-border-default);
  flex-shrink: 0;
}

.ds-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ds-avatar-sm { width: 32px; height: 32px; font-size: 0.75rem; }
.ds-avatar-md { width: 40px; height: 40px; font-size: 0.875rem; }
.ds-avatar-lg { width: 56px; height: 56px; font-size: 1.125rem; }

/* Page Header */
.ds-page-header {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
  margin-bottom: var(--ds-space-6);
}

@media (min-width: 768px) {
  .ds-page-header {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.ds-page-title {
  margin: 0;
  font-size: var(--ds-font-size-2xl);
  font-weight: var(--ds-font-weight-bold);
  color: var(--ds-text-primary);
}

.ds-page-subtitle {
  margin: 0;
  font-size: var(--ds-font-size-sm);
  color: var(--ds-text-muted);
}

.ds-page-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--ds-space-2);
}

/* Breadcrumb */
.ds-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--ds-space-2);
  font-size: var(--ds-font-size-xs);
  color: var(--ds-text-muted);
  margin-bottom: var(--ds-space-1);
}

.ds-breadcrumb a {
  color: var(--ds-text-muted);
}

.ds-breadcrumb a:hover {
  color: var(--ds-color-primary);
}

.ds-breadcrumb .separator {
  color: var(--ds-text-subtle);
}

.ds-breadcrumb .active {
  color: var(--ds-text-primary);
  font-weight: var(--ds-font-weight-medium);
}

/* ==========================================================================
   11. TOAST NOTIFICATIONS (Lightweight vanilla)
   ========================================================================== */
.ds-toast-container {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: var(--ds-z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
  max-width: 380px;
  pointer-events: none;
}

.ds-toast {
  background-color: var(--ds-bg-surface-elevated);
  border: 1px solid var(--ds-border-default);
  border-radius: var(--ds-radius-lg);
  padding: var(--ds-space-3) var(--ds-space-4);
  box-shadow: var(--ds-shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--ds-space-3);
  color: var(--ds-text-primary);
  pointer-events: auto;
  animation: ds-slide-in-right 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  transition: opacity 0.2s, transform 0.2s;
}

.ds-toast.hiding {
  opacity: 0;
  transform: translateX(20px);
}

@keyframes ds-slide-in-right {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ==========================================================================
   12. THEME TOGGLE BUTTON COMPONENT (UUPM Smooth Animated)
   ========================================================================== */
.ds-theme-toggle-btn {
  background-color: var(--ds-bg-surface);
  border: 1px solid var(--ds-border-default);
  color: var(--ds-text-body);
  width: 40px;
  height: 40px;
  border-radius: var(--ds-radius-lg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--ds-shadow-xs);
  transition: all var(--ds-transition-fast);
}

.ds-theme-toggle-btn:hover {
  background-color: var(--ds-bg-hover);
  color: var(--ds-color-secondary);
  border-color: var(--ds-border-strong);
  transform: translateY(-1px);
  box-shadow: var(--ds-shadow-sm);
}

.ds-theme-toggle-btn .icon-moon,
.ds-theme-toggle-btn .icon-sun {
  position: absolute;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  font-size: 1.05rem;
}

[data-theme="dark"] .ds-theme-toggle-btn .icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0);
}

[data-theme="dark"] .ds-theme-toggle-btn .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  color: #fbbf24;
}

:not([data-theme="dark"]) .ds-theme-toggle-btn .icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0);
}

:not([data-theme="dark"]) .ds-theme-toggle-btn .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  color: var(--ds-color-primary);
}