/* GWS Business Intelligence Component Library */
/* Optimized for iPad usage */

/* ===== Design System Variables ===== */
:root {
  /* Color Palette */
  --color-primary: #00d1b2;
  --color-info: #3298dc;
  --color-success: #48c774;
  --color-warning: #ffdd57;
  --color-danger: #f14668;
  --color-dark: #363636;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  
  /* Spacing System */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* ===== KPI Card Component ===== */
.kpi-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

.kpi-card.is-loading {
  min-height: 120px;
}

.kpi-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.kpi-card__title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 0;
}

.kpi-card__icon {
  font-size: 1.25rem;
  opacity: 0.6;
}

.kpi-card__value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.2;
  margin: var(--spacing-sm) 0;
}

.kpi-card__subtitle {
  font-size: 0.875rem;
  color: #666;
  margin: 0;
}

.kpi-card__trend {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: var(--spacing-sm);
}

.kpi-card__trend.is-positive {
  color: var(--color-success);
}

.kpi-card__trend.is-negative {
  color: var(--color-danger);
}

/* KPI Card Color Variants */
.kpi-card.is-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, #00b89c 100%);
  color: var(--color-white);
}

.kpi-card.is-info {
  background: linear-gradient(135deg, var(--color-info) 0%, #2b7ec4 100%);
  color: var(--color-white);
}

.kpi-card.is-success {
  background: linear-gradient(135deg, var(--color-success) 0%, #3eb863 100%);
  color: var(--color-white);
}

.kpi-card.is-warning {
  background: linear-gradient(135deg, var(--color-warning) 0%, #ffd83d 100%);
  color: var(--color-dark);
}

.kpi-card.is-danger {
  background: linear-gradient(135deg, var(--color-danger) 0%, #e63757 100%);
  color: var(--color-white);
}

.kpi-card.is-primary .kpi-card__title,
.kpi-card.is-info .kpi-card__title,
.kpi-card.is-success .kpi-card__title,
.kpi-card.is-danger .kpi-card__title,
.kpi-card.is-primary .kpi-card__value,
.kpi-card.is-info .kpi-card__value,
.kpi-card.is-success .kpi-card__value,
.kpi-card.is-danger .kpi-card__value {
  color: var(--color-white);
}

.kpi-card.is-warning .kpi-card__title,
.kpi-card.is-warning .kpi-card__value {
  color: var(--color-dark);
}

.kpi-card.is-primary .kpi-card__subtitle,
.kpi-card.is-info .kpi-card__subtitle,
.kpi-card.is-success .kpi-card__subtitle,
.kpi-card.is-danger .kpi-card__subtitle {
  color: rgba(255, 255, 255, 0.8);
}

.kpi-card.is-warning .kpi-card__subtitle {
  color: rgba(0, 0, 0, 0.6);
}

/* ===== Loading States ===== */
.loading-spinner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
}

.loading-spinner__icon {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-light);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.loading-spinner.is-small .loading-spinner__icon {
  width: 24px;
  height: 24px;
  border-width: 3px;
}

.loading-spinner.is-large .loading-spinner__icon {
  width: 64px;
  height: 64px;
  border-width: 5px;
}

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

/* Loading Skeleton */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 1rem;
  margin-bottom: var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.skeleton-title {
  height: 1.5rem;
  width: 50%;
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-sm);
}

.skeleton-box {
  height: 120px;
  border-radius: var(--radius-md);
}

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

/* ===== Enhanced Tables ===== */
.table-wrapper {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.table-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid #e0e0e0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.table-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin: 0;
}

.table-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.enhanced-table {
  width: 100%;
  border-collapse: collapse;
}

.enhanced-table thead {
  background: var(--color-light);
  border-bottom: 2px solid #e0e0e0;
}

.enhanced-table th {
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-weight: 600;
  color: var(--color-dark);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.enhanced-table td {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid #f0f0f0;
}

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

.enhanced-table tbody tr:hover {
  background-color: #f8f8f8;
}

.enhanced-table tbody tr.is-loading td {
  padding: 0;
}

/* Sortable Headers */
.sortable {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: var(--spacing-lg);
}

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

.sortable::after {
  content: '⇅';
  position: absolute;
  right: var(--spacing-sm);
  opacity: 0.3;
  font-size: 0.875rem;
}

.sortable.is-sorted-asc::after {
  content: '↑';
  opacity: 1;
  color: var(--color-primary);
}

.sortable.is-sorted-desc::after {
  content: '↓';
  opacity: 1;
  color: var(--color-primary);
}

/* ===== Form Enhancements ===== */
.form-field {
  margin-bottom: var(--spacing-lg);
}

.form-field.is-loading .input,
.form-field.is-loading .select select {
  background-color: #f5f5f5;
  cursor: wait;
}

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

.button.is-loading::after {
  content: '';
  position: absolute;
  left: calc(50% - 12px);
  top: calc(50% - 12px);
  width: 24px;
  height: 24px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ===== Pagination Component ===== */
.pagination-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-top: 1px solid #e0e0e0;
  background: var(--color-light);
}

.pagination-info {
  font-size: 0.875rem;
  color: var(--color-dark);
}

.pagination {
  display: flex;
  gap: var(--spacing-xs);
}

.pagination-link,
.pagination-previous,
.pagination-next {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid #e0e0e0;
  background: var(--color-white);
  color: var(--color-dark);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

.pagination-link:hover,
.pagination-previous:hover,
.pagination-next:hover {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.pagination-link.is-current {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
  font-weight: 600;
}

.pagination-ellipsis {
  padding: var(--spacing-sm) var(--spacing-md);
  color: #999;
}

/* ===== Alert Component ===== */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  animation: slideIn var(--transition-normal);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.alert.is-info {
  background: rgba(50, 152, 220, 0.1);
  color: #2470a0;
  border-left: 4px solid var(--color-info);
}

.alert.is-success {
  background: rgba(72, 199, 116, 0.1);
  color: #257942;
  border-left: 4px solid var(--color-success);
}

.alert.is-warning {
  background: rgba(255, 221, 87, 0.1);
  color: #8b6f00;
  border-left: 4px solid var(--color-warning);
}

.alert.is-danger {
  background: rgba(241, 70, 104, 0.1);
  color: #a01e3e;
  border-left: 4px solid var(--color-danger);
}

.alert__icon {
  font-size: 1.25rem;
}

.alert__content {
  flex: 1;
}

.alert__close {
  cursor: pointer;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.alert__close:hover {
  opacity: 1;
}

/* ===== Utility Classes ===== */
.fade-in {
  animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp var(--transition-normal);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Progress Bar */
.progress-bar {
  height: 8px;
  background: var(--color-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.progress-bar__fill {
  height: 100%;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: width var(--transition-normal);
}

.progress-bar.is-small {
  height: 4px;
}

.progress-bar.is-large {
  height: 12px;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: var(--spacing-xxl);
  color: #999;
}

.empty-state__icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-lg);
  opacity: 0.3;
}

.empty-state__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--spacing-sm);
}

.empty-state__subtitle {
  font-size: 0.875rem;
  color: #666;
}