/* Card Components */
.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.card-header h3,
.card-header h4,
.card-header h5 {
    margin: 0;
    color: var(--text-primary);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Card variants */
.card-elevated {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card-elevated:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

.card-bordered {
    border: 2px solid var(--border-color);
}

/* Status cards */
.card-success {
    border-left: 4px solid var(--success-color);
}

.card-error {
    border-left: 4px solid var(--error-color);
}

.card-warning {
    border-left: 4px solid var(--warning-color);
}

.card-info {
    border-left: 4px solid var(--primary-color);
}

/* Interactive cards */
.card-clickable {
    cursor: pointer;
    transition: all 0.2s ease;
}

.card-clickable:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card-clickable:active {
    transform: translateY(0);
}

/* Card with image */
.card-image {
    position: relative;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card-image:hover img {
    transform: scale(1.05);
}

.card-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.7));
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-lg);
    color: white;
}

/* Compact card */
.card-compact {
    padding: var(--spacing-md);
}

.card-compact .card-header,
.card-compact .card-body,
.card-compact .card-footer {
    padding: var(--spacing-sm);
}

/* Card grid */
.card-grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card-grid-sm {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
}

.card-grid-lg {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

/* Statistics card */
.stat-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-change {
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

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

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

/* Profile card */
.profile-card {
    text-align: center;
    padding: var(--spacing-xl);
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto var(--spacing-md);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
}

.profile-name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.profile-role {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

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

.card-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .card-header,
    .card-body,
    .card-footer {
        padding: var(--spacing-md);
    }
    
    .card-footer {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: stretch;
    }
    
    .stat-card {
        padding: var(--spacing-lg);
    }
    
    .stat-value {
        font-size: var(--font-size-2xl);
    }
    
    .profile-card {
        padding: var(--spacing-lg);
    }
    
    .profile-avatar {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-lg);
    }
}