/**
 * Unified Card System
 *
 * 统一的卡片组件系统，确保所有页面的卡片使用相同的视觉规范
 * Dashboard、Provider Manager、Pricing 页面必须使用此统一体系
 */

/* ==================== Base Card Styles ==================== */

.unified-card {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-6);
  transition: all var(--transition-base);
}

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

/* ==================== Card Header ==================== */

.unified-card-header {
  margin-bottom: var(--spacing-4);
}

.unified-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-1);
}

.unified-card-description {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  line-height: var(--leading-relaxed);
}

/* ==================== Card Content ==================== */

.unified-card-content {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

/* ==================== Card Footer ==================== */

.unified-card-footer {
  margin-top: var(--spacing-6);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--border-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ==================== Stat Card (Dashboard 统计卡片) ==================== */

.stat-card {
  position: relative;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

/* Stat Card Icon */
.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-4);
}

.stat-card-icon svg {
  width: 24px;
  height: 24px;
}

/* Stat Card Title */
.stat-card-title {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-2);
}

/* Stat Card Value */
.stat-card-value {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  line-height: var(--leading-tight);
  margin-bottom: var(--spacing-2);
}

/* Stat Card Change */
.stat-card-change {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
}

.stat-card-change.positive {
  color: var(--success);
}

.stat-card-change.negative {
  color: var(--danger);
}

/* ==================== Balance Card (账户余额卡 - Subtle Accent) ==================== */

.balance-card {
  position: relative;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

/* ==================== Provider Card (Provider Manager) ==================== */

.provider-card {
  position: relative;
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-6);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 280px;
  transition: all var(--transition-base);
}

.provider-card:hover {
  border-color: var(--border-secondary);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-2px);
}

/* Provider Card Logo */
.provider-card-logo {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-4);
  background-color: var(--bg-secondary);
}

.provider-card-logo img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

/* Provider Card Header */
.provider-card-header {
  margin-bottom: var(--spacing-4);
}

.provider-card-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.provider-card-description {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  line-height: var(--leading-relaxed);
}

/* Provider Card Status */
.provider-card-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-4);
}

/* Provider Card Stats */
.provider-card-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-6);
  padding: var(--spacing-4);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-lg);
}

.provider-card-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
}

.provider-card-stat-label {
  color: var(--text-tertiary);
  font-weight: var(--font-medium);
}

.provider-card-stat-value {
  color: var(--text-primary);
  font-weight: var(--font-semibold);
}

/* Provider Card Actions */
.provider-card-actions {
  margin-top: auto;
  display: flex;
  gap: var(--spacing-2);
}

/* ==================== Pricing Card (Pricing 页面定价卡) ==================== */

.pricing-card {
  position: relative;
  background-color: var(--card-bg);
  border: 2px solid var(--card-border);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-8);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all var(--transition-base);
}

.pricing-card:hover {
  border-color: var(--border-secondary);
  box-shadow: var(--card-shadow-hover);
  transform: translateY(-4px);
}

/* Recommended Badge */
.pricing-card-recommended {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.pricing-card-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--brand-primary);
  color: var(--text-inverse);
  padding: var(--spacing-1) var(--spacing-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
}

/* Pricing Card Header */
.pricing-card-header {
  margin-bottom: var(--spacing-6);
}

.pricing-card-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-2);
}

.pricing-card-price {
  display: flex;
  align-items: baseline;
  margin-bottom: var(--spacing-2);
}

.pricing-card-price-value {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
  line-height: var(--leading-none);
}

.pricing-card-price-unit {
  font-size: var(--text-lg);
  font-weight: var(--font-normal);
  color: var(--text-tertiary);
  margin-left: var(--spacing-1);
}

.pricing-card-description {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  line-height: var(--leading-relaxed);
}

/* Pricing Card Features */
.pricing-card-features {
  list-style: none;
  margin-bottom: var(--spacing-8);
  flex: 1;
}

.pricing-card-feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.pricing-card-feature svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
}

.pricing-card-feature-included svg {
  color: var(--success);
}

.pricing-card-feature-excluded svg {
  color: var(--text-quaternary);
}

/* Pricing Card Actions */
.pricing-card-actions {
  margin-top: auto;
}

/* ==================== Card Grid Layouts ==================== */

/* 3-Column Grid (Dashboard Stats, Provider Cards) */
.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-6);
  align-items: stretch;
}

@media (max-width: 1024px) {
  .card-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* 4-Column Grid (Dashboard Stats) */
.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-6);
  align-items: stretch;
}

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

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

/* ==================== Dark Theme Adjustments ==================== */

[data-theme="dark"] .stat-card-icon,
[data-theme="dark"] .provider-card-logo {
  background-color: var(--bg-tertiary);
}

[data-theme="dark"] .provider-card-stats {
  background-color: var(--bg-tertiary);
}

[data-theme="dark"] .pricing-card-recommended {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.15);
}