/* =============================================================================
   Osmanthus Platform - Unified Card Component System
   
   This file contains all card-related styles for the platform.
   All card variations inherit from the base .os-card class.
   ============================================================================= */

/* =============================================================================
   Card-Specific CSS Variables
   ============================================================================= */
:root {
  /* Card Sizing */
  --card-radius: 0;
  --card-radius-sm: 0;
  --card-radius-lg: 0;
  --card-padding: var(--spacing-lg);
  --card-padding-sm: var(--spacing-md);
  --card-padding-lg: var(--spacing-xl);
  
  /* Card Shadows - Mindstate: Minimal single shadows */
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  --card-shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.08);
  --card-shadow-inset: none; /* Mindstate: No inset shadows */
  --card-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    
  /* Card Colors */
  --card-bg: var(--color-white);
  --card-bg-hover: var(--color-bg-light);
  --card-bg-gradient-start: var(--card-bg);
  --card-bg-gradient-end: var(--color-bg-light);
  
  /* Card Transitions */
  --card-transition: all 0.3s ease;
  --card-transition-fast: all 0.2s ease;
  
  /* Card Accents */
  --card-accent-size: 3px;
  --card-accent-color: var(--primary);
}

/* =============================================================================
   Base Card Component
   ============================================================================= */
.os-card {
  /* Mindstate: Solid white background */
  background: #FFFFFF;
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--card-shadow);
  
  /* Layout */
  position: relative;
  overflow: hidden;
  
  /* Transitions */
  transition: var(--card-transition);
  
  /* Typography */
  color: var(--color-text);
  line-height: 1.6;
}

/* Card hover state (for interactive cards) */
.os-card--interactive:hover {
  transform: translateY(-1px); /* Mindstate: Reduced movement */
  box-shadow: var(--card-shadow-hover);
  background: #FAFAFA; /* Mindstate: Light gray on hover */
}

/* =============================================================================
   Card Structure Components
   ============================================================================= */
.os-card__header {
  margin-bottom: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.os-card__title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-dark);
  margin: 0;
}

.os-card__subtitle {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: var(--spacing-xs);
}

.os-card__content {
  /* Content area - can contain any content */
}

.os-card__footer {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* =============================================================================
   Size Variants
   ============================================================================= */
.os-card--sm {
  padding: var(--card-padding-sm);
  border-radius: var(--card-radius-sm);
  box-shadow: var(--card-shadow-sm);
}

.os-card--lg {
  padding: var(--card-padding-lg);
  border-radius: var(--card-radius-lg);
}

/* =============================================================================
   Style Variants
   ============================================================================= */

/* Top accent bar */
.os-card--accent-top::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--card-accent-size);
  background: var(--card-accent-color);
}

/* Left accent bar */
.os-card--accent-left::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--card-accent-size);
  background: var(--card-accent-color);
  transition: width var(--card-transition-fast);
}

.os-card--accent-left:hover::before {
  width: calc(var(--card-accent-size) * 2);
}

/* Mindstate: Inset style simplified */
.os-card--inset {
  box-shadow: none; /* Mindstate: No inset shadows */
  background: #FAFAFA; /* Mindstate: Light gray */
  border: 1px solid #EBEBEB; /* Mindstate: Light border instead */
}

/* Mindstate: Solid color variations */
.os-card--gradient-primary {
  background: #F0F8F0; /* Mindstate: Very light green tint */
  border-left: 3px solid #6B8E23; /* Mindstate: Green accent */
}

.os-card--gradient-secondary {
  background: #FFF5F0; /* Mindstate: Very light orange tint */
  border-left: 3px solid #CD853F; /* Mindstate: Orange accent */
}

/* =============================================================================
   Functional Variants
   ============================================================================= */

/* Metric Card */
.os-card--metric {
  text-align: center;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.os-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  background: #F4F4F4; /* Mindstate: Light gray */
  border-radius: 0; /* Mindstate: Sharp corners */
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: none; /* Mindstate: No shadow on icons */
  color: #6B8E23; /* Mindstate: Data green */
}

.os-card__value {
  font-size: 2rem;
  font-weight: 300; /* Mindstate: Lighter weight for numbers */
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin-bottom: var(--spacing-xs);
  color: #000000; /* Mindstate: Pure black */
  letter-spacing: -0.04em; /* Mindstate: Tighter spacing for large numbers */
}

.os-card__label {
  font-size: 0.85rem;
  color: #8B9187; /* Mindstate: Medium gray */
  text-transform: uppercase;
  letter-spacing: 0.05em; /* Mindstate: Wide letter spacing */
  font-weight: 500;
}

/* Expandable Card */
.os-card--expandable {
  cursor: pointer;
}

.os-card--expandable .os-card__header {
  user-select: none;
}

.os-card__chevron {
  font-size: 1.2rem;
  color: var(--primary);
  transition: transform var(--card-transition-fast);
}

.os-card--expanded .os-card__chevron {
  transform: rotate(180deg);
}

.os-card__collapsible {
  display: none;
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-divider);
  animation: fadeIn 0.3s ease;
}

.os-card--expanded .os-card__collapsible {
  display: block;
}

/* Clickable Card */
.os-card--clickable {
  cursor: pointer;
  transition: var(--card-transition);
}

.os-card--clickable:hover {
  transform: translateY(-1px); /* Mindstate: Reduced movement */
  box-shadow: var(--card-shadow-hover);
  background: #FAFAFA; /* Mindstate: Light gray on hover */
}

.os-card--clickable:active {
  transform: translateY(0);
  box-shadow: var(--card-shadow-sm);
}

/* =============================================================================
   State Modifiers
   ============================================================================= */

/* Loading State */
.os-card--loading {
  position: relative;
  overflow: hidden;
}

.os-card--loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  ); /* Mindstate: Reduced shimmer effect */
  animation: shimmer 1.5s infinite;
}

.os-card--loading .os-card__content {
  opacity: 0.5;
}

/* Error State */
.os-card--error {
  border: 2px solid var(--error);
  background: #FFFFFF; /* Mindstate: White background */
}

.os-card--error .os-card__title {
  color: var(--error);
}

/* Success State */
.os-card--success {
  border: 2px solid var(--success);
  background: #FFFFFF; /* Mindstate: White background */
}

.os-card--success::before {
  background: var(--success);
}

/* Selected State */
.os-card--selected {
  border: 2px solid #6B8E23; /* Mindstate: Data green */
  box-shadow: var(--card-shadow); /* Mindstate: Single shadow only */
}

/* =============================================================================
   Responsive Styles
   ============================================================================= */
@media (max-width: 768px) {
  .os-card {
    padding: var(--spacing-md);
  }
  
  .os-card--lg {
    padding: var(--spacing-lg);
  }
  
  .os-card__value {
    font-size: 1.75rem;
  }
}

/* =============================================================================
   Migration Helpers & TEA Explorer Specific
   ============================================================================= */

/* TEA Explorer card styling */
.tea-card {
  background: #FFFFFF; /* Mindstate: White background */
  border-radius: 0; /* Mindstate: Sharp corners */
  padding: var(--card-padding);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05); /* Mindstate: Minimal shadow */
  border: 1px solid #F4F4F4; /* Mindstate: Light border */
  position: relative;
  overflow: hidden;
  transition: var(--card-transition);
  color: var(--color-text);
  line-height: 1.6;
}

.tea-card--metric {
  text-align: center;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
}

.tea-card--metric .metric-value {
  font-size: 2rem;
  font-weight: 300; /* Mindstate: Lighter weight for large numbers */
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  margin-bottom: var(--spacing-xs);
  color: #000000; /* Mindstate: Pure black */
  letter-spacing: -0.04em; /* Mindstate: Tighter letter spacing */
}

.tea-card--metric .metric-label {
  font-size: 0.85rem;
  color: #8B9187; /* Mindstate: Medium gray */
  text-transform: uppercase;
  letter-spacing: 0.05em; /* Mindstate: Wide letter spacing */
  font-weight: 500;
}

/* Dashboard specific cards */
.dashboard-metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.dashboard-section {
  margin-bottom: var(--spacing-xl);
}

/* Chart containers */
.chart-container {
  background: #FFFFFF; /* Mindstate: White background */
  border-radius: 0; /* Mindstate: Sharp corners */
  padding: var(--card-padding);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05); /* Mindstate: Minimal shadow */
  border: 1px solid #F4F4F4; /* Mindstate: Light border */
  min-height: 400px;
}

/* Top targets list */
.top-targets-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.target-item {
  background: #FFFFFF; /* Mindstate: White background */
  border-radius: 0; /* Mindstate: Sharp corners */
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  border: 1px solid #F4F4F4; /* Mindstate: Light border */
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
}

.target-item:hover {
  transform: translateX(2px); /* Mindstate: Reduced movement */
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08); /* Mindstate: Subtle shadow */
  background: #FAFAFA; /* Mindstate: Light gray on hover */
}

.target-rank {
  font-weight: 700;
  color: var(--primary);
  margin-right: var(--spacing-md);
}

.target-name {
  flex: 1;
  font-weight: 500;
}

.target-score {
  font-weight: 700;
  color: var(--primary-dark);
  font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}