/**
 * Card Component System
 * Variants: default, elevated, bordered, interactive, gradient
 *
 * @author Amit Haridas, ConcreteInfo
 */

/* ============================================
   BASE CARD
   ============================================ */
.card {
  background-color: var(--bg-elevated);
  border-radius: var(--radius-xl);
  box-shadow: var(--card-shadow, var(--shadow-sm));
  overflow: hidden;
  transition: all var(--transition-normal);
}

/* Card variants */
.card--elevated {
  box-shadow: var(--shadow-md);
}

.card--soft {
  /* soft, diffuse ambient shadow — large blur radius */
  box-shadow: var(--shadow-soft);
}

.card--float {
  /* strong floating depth — max blur */
  box-shadow: var(--shadow-float);
}

.card--glow {
  /* accent-tinted blurred glow that follows the theme accent */
  box-shadow: var(--shadow-glow);
}

.card--glass {
  /* frosted glass surface — translucent + backdrop blur */
  background-color: rgba(255, 255, 255, 0.55);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: var(--shadow-soft);
}

.card--bordered {
  box-shadow: none;
  border: 1px solid var(--border-subtle);
}

.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  box-shadow: var(--shadow-xl);
  border-color: var(--color-brand-200);
}

/* ============================================
   CARD SECTIONS
   ============================================ */
.card__header {
  padding: var(--card-header-py, var(--spacing-3-5)) var(--card-header-px, var(--spacing-5));
  background: var(--card-header-bg);
  -webkit-backdrop-filter: blur(var(--card-header-blur, 0px)) saturate(var(--card-header-saturate, 1));
  backdrop-filter: blur(var(--card-header-blur, 0px)) saturate(var(--card-header-saturate, 1));
  color: var(--card-header-fg);
  border-bottom: 1px solid var(--card-header-border);
  box-shadow: var(--card-header-highlight, none);
  position: relative;
}

.card__header--subtle {
  background: var(--card-header-bg);
  color: var(--card-header-fg);
  border-bottom: 1px solid var(--card-header-border);
}

.card__header--transparent {
  background-color: transparent;
  border-bottom: none;
  padding-bottom: 0;
  /* A transparent header sits on the card body surface (--bg-elevated), so it
     must use body text colour — NOT the card theme's --card-header-fg, which is
     white for dark themes (aurora/neon/brand-duotone) and would be invisible on
     a light card body. This overrides the inherited `color: var(--card-header-fg)`
     from .card__header. */
  color: var(--text-primary);
}

.card__title {
  margin: 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: inherit;
}

.card__subtitle {
  margin: var(--spacing-1) 0 0;
  font-size: var(--font-size-sm);
  opacity: 0.85;
  color: inherit;
}

.card__body {
  padding: var(--spacing-6);
}

.card__body--compact {
  padding: var(--spacing-4);
}

.card__body--spacious {
  padding: var(--spacing-8);
}

.card__footer {
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--bg-tertiary);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.card__image {
  width: 100%;
  height: auto;
  display: block;
}

.card__actions {
  display: flex;
  gap: var(--spacing-2);
  margin-top: var(--spacing-4);
}

/* ============================================
   STAT CARD
   ============================================ */
.stat-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-4);
  padding: var(--spacing-5);
  background-color: var(--bg-elevated);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.stat-card__icon {
  flex-shrink: 0;
  width: 3.5rem;
  height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xl);
  transition: transform var(--transition-bounce);
}

.stat-card:hover .stat-card__icon {
  transform: scale(1.1) rotate(-5deg);
}

.stat-card__icon--primary {
  background: linear-gradient(135deg, var(--color-brand), var(--color-brand-light));
  color: var(--text-inverse);
  box-shadow: 0 4px 12px hsl(var(--color-brand-h), 77%, 51%, 0.3);
}

.stat-card__icon--secondary {
  background: linear-gradient(135deg, var(--color-gray-700), var(--color-gray-800));
  color: var(--text-inverse);
}

.stat-card__icon--success {
  background: linear-gradient(135deg, var(--color-success), hsl(142, 76%, 45%));
  color: var(--text-inverse);
  box-shadow: 0 4px 12px hsl(142, 76%, 36%, 0.3);
}

.stat-card__icon--info {
  background: linear-gradient(135deg, var(--color-info), hsl(199, 89%, 55%));
  color: var(--text-inverse);
  box-shadow: 0 4px 12px hsl(199, 89%, 48%, 0.3);
}

.stat-card__icon--warning {
  background: linear-gradient(135deg, var(--color-warning), hsl(45, 93%, 55%));
  color: var(--text-inverse);
  box-shadow: 0 4px 12px hsl(45, 93%, 47%, 0.3);
}

.stat-card__content {
  flex: 1;
  min-width: 0;
}

.stat-card__value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--text-primary);
}

.stat-card__value--sm {
  font-size: var(--font-size-xl);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  margin-top: var(--spacing-1);
}

.stat-card__trend {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-full);
  margin-top: var(--spacing-2);
}

.stat-card__trend--up {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.stat-card__trend--down {
  background-color: var(--color-danger-light);
  color: var(--color-danger);
}

/* ============================================
   ACTION CARD
   ============================================ */
.action-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-8) var(--spacing-5);
  background-color: var(--bg-elevated);
  border-radius: var(--radius-xl);
  border: 2px solid transparent;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.action-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-brand), var(--color-brand-light));
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: 0;
}

.action-card > * {
  position: relative;
  z-index: 1;
}

.action-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-brand);
}

.action-card:hover::after {
  opacity: 0.05;
}

.action-card__icon {
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-4);
  transition: all var(--transition-bounce);
  background-color: var(--color-brand-100);
  color: var(--color-brand);
}

.action-card:hover .action-card__icon {
  background: linear-gradient(135deg, var(--color-brand), var(--color-brand-light));
  color: white;
  transform: scale(1.15) rotate(-10deg);
  box-shadow: var(--shadow-primary);
}

.action-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
  transition: color var(--transition-fast);
}

.action-card:hover .action-card__title {
  color: var(--color-brand);
}

.action-card__description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  line-height: var(--line-height-normal);
}

/* Action card color variants */
.action-card[data-variant="blue"] .action-card__icon {
  background-color: var(--color-info-light);
  color: var(--color-info);
}

.action-card[data-variant="blue"]:hover .action-card__icon {
  background: linear-gradient(135deg, var(--color-info), hsl(199, 89%, 55%));
  color: white;
}

.action-card[data-variant="green"] .action-card__icon {
  background-color: var(--color-success-light);
  color: var(--color-success);
}

.action-card[data-variant="green"]:hover .action-card__icon {
  background: linear-gradient(135deg, var(--color-success), hsl(142, 76%, 45%));
  color: white;
}

.action-card[data-variant="yellow"] .action-card__icon {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}

.action-card[data-variant="yellow"]:hover .action-card__icon {
  background: linear-gradient(135deg, var(--color-warning), hsl(45, 93%, 55%));
  color: white;
}

.action-card[data-variant="teal"] .action-card__icon {
  background-color: #ccfbf1;
  color: #0d9488;
}

.action-card[data-variant="teal"]:hover .action-card__icon {
  background: linear-gradient(135deg, #14b8a6, #0d9488);
  color: white;
}

.action-card[data-variant="purple"] .action-card__icon {
  background-color: #f3e8ff;
  color: #9333ea;
}

.action-card[data-variant="purple"]:hover .action-card__icon {
  background: linear-gradient(135deg, #a855f7, #9333ea);
  color: white;
}

.action-card[data-variant="gray"] .action-card__icon {
  background-color: var(--color-gray-100);
  color: var(--color-gray-600);
}

.action-card[data-variant="gray"]:hover .action-card__icon {
  background: linear-gradient(135deg, var(--color-gray-600), var(--color-gray-700));
  color: white;
}

/* ============================================
   CARD GRID
   ============================================ */
.card-grid {
  display: grid;
  gap: var(--spacing-6);
}

.card-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.card-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.card-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
  .card-grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .card-grid--2,
  .card-grid--3,
  .card-grid--4 {
    grid-template-columns: 1fr;
  }
}