/*
 * ============================================================================
 * St. Cloud State University - Card Components
 * ============================================================================
 * 
 * Standardized card/panel styling
 * 
 * PURPOSE:
 * Provides consistent card components including:
 * - Basic cards with headers and footers
 * - Info/alert/status cards
 * - Interactive cards with hover states
 * - Card groups and layouts
 * 
 * MIGRATION PATH:
 * This file follows the same structure as scsu-buttons.css.
 * Copy to scsu-main-styles.css keeping the same class names.
 * All component classes are prefixed with .card-* for easy identification.
 * 
 * ACCESSIBILITY:
 * - Proper heading hierarchy
 * - High contrast borders
 * - Keyboard navigation support
 * - Focus indicators for interactive cards
 * 
 * WCAG 2.1 AA Compliance:
 * - Color contrast ratio ≥ 4.5:1
 * - Semantic markup
 * - Accessible card actions
 * 
 * ============================================================================
 */

/* ============================================
   BASE CARD STYLES
   Foundation for all card variants
   ============================================ */

.card-scsu {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: var(--scsu-card-bg, #ffffff);
    background-clip: border-box;
    border: 1px solid var(--scsu-card-border-color, #dee2e6);
    border-radius: var(--scsu-card-border-radius, 0.25rem);
    box-shadow: var(--scsu-shadow-sm, 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075));
    margin-bottom: var(--scsu-spacing-4, 1rem);
}

/* ============================================
   CARD HEADER
   ============================================ */

.card-header-scsu {
    padding: var(--scsu-card-padding, 1.5rem);
    margin-bottom: 0;
    background-color: var(--scsu-gray-100, #f8f9fa);
    border-bottom: 1px solid var(--scsu-card-border-color, #dee2e6);
    border-radius: calc(var(--scsu-card-border-radius, 0.25rem) - 1px) calc(var(--scsu-card-border-radius, 0.25rem) - 1px) 0 0;
}

.card-header-scsu h1,
.card-header-scsu h2,
.card-header-scsu h3,
.card-header-scsu h4,
.card-header-scsu h5,
.card-header-scsu h6,
.card-title-scsu {
    margin-top: 0;
    margin-bottom: 0;
    font-weight: var(--scsu-font-weight-semibold, 600);
    color: var(--scsu-text-primary, #212529);
}

/* ============================================
   CARD BODY
   ============================================ */

.card-body-scsu {
    flex: 1 1 auto;
    padding: var(--scsu-card-padding, 1.5rem);
    color: var(--scsu-text-primary, #212529);
}

.card-title-scsu {
    margin-bottom: var(--scsu-spacing-3, 0.75rem);
    font-size: var(--scsu-font-size-h5, 1.25rem);
    font-weight: var(--scsu-font-weight-semibold, 600);
}

.card-subtitle-scsu {
    margin-top: calc(var(--scsu-spacing-3, 0.75rem) * -0.5);
    margin-bottom: 0;
    color: var(--scsu-text-secondary, #6c757d);
    font-size: var(--scsu-font-size-sm, 0.875rem);
}

.card-text-scsu {
    margin-bottom: var(--scsu-spacing-4, 1rem);
}

.card-text-scsu:last-child {
    margin-bottom: 0;
}

/* ============================================
   CARD FOOTER
   ============================================ */

.card-footer-scsu {
    padding: var(--scsu-card-padding, 1.5rem);
    background-color: var(--scsu-gray-100, #f8f9fa);
    border-top: 1px solid var(--scsu-card-border-color, #dee2e6);
    border-radius: 0 0 calc(var(--scsu-card-border-radius, 0.25rem) - 1px) calc(var(--scsu-card-border-radius, 0.25rem) - 1px);
}

/* ============================================
   CARD IMAGE
   ============================================ */

.card-img-scsu,
.card-img-top-scsu {
    width: 100%;
    border-radius: calc(var(--scsu-card-border-radius, 0.25rem) - 1px) calc(var(--scsu-card-border-radius, 0.25rem) - 1px) 0 0;
}

.card-img-bottom-scsu {
    width: 100%;
    border-radius: 0 0 calc(var(--scsu-card-border-radius, 0.25rem) - 1px) calc(var(--scsu-card-border-radius, 0.25rem) - 1px);
}

/* ============================================
   CARD VARIANTS - CONTEXTUAL COLORS
   ============================================ */

/* Primary card */
.card-scsu-primary {
    border-color: var(--scsu-color-primary, #b31b34);
}

.card-scsu-primary .card-header-scsu {
    background-color: var(--scsu-color-primary, #b31b34);
    color: var(--scsu-text-inverse, #ffffff);
    border-bottom-color: var(--scsu-color-primary-dark, #9a1729);
}

.card-scsu-primary .card-header-scsu h1,
.card-scsu-primary .card-header-scsu h2,
.card-scsu-primary .card-header-scsu h3,
.card-scsu-primary .card-header-scsu h4,
.card-scsu-primary .card-header-scsu h5,
.card-scsu-primary .card-header-scsu h6 {
    color: var(--scsu-text-inverse, #ffffff);
}

/* Success card */
.card-scsu-success {
    border-color: var(--scsu-color-success, #198754);
}

.card-scsu-success .card-header-scsu {
    background-color: var(--scsu-color-success, #198754);
    color: var(--scsu-text-inverse, #ffffff);
}

/* Info card */
.card-scsu-info {
    border-color: var(--scsu-color-info, #0dcaf0);
}

.card-scsu-info .card-header-scsu {
    background-color: var(--scsu-color-info, #0dcaf0);
    color: var(--scsu-text-primary, #212529);
}

/* Warning card */
.card-scsu-warning {
    border-color: var(--scsu-color-warning, #ffc107);
}

.card-scsu-warning .card-header-scsu {
    background-color: var(--scsu-color-warning, #ffc107);
    color: var(--scsu-text-primary, #212529);
}

/* Danger card */
.card-scsu-danger {
    border-color: var(--scsu-color-danger, #dc3545);
}

.card-scsu-danger .card-header-scsu {
    background-color: var(--scsu-color-danger, #dc3545);
    color: var(--scsu-text-inverse, #ffffff);
}

/* ============================================
   INTERACTIVE CARDS
   Clickable/hoverable cards
   ============================================ */

.card-scsu-interactive {
    transition: all var(--scsu-transition-base, 0.3s ease-in-out);
    cursor: pointer;
}

.card-scsu-interactive:hover {
    box-shadow: var(--scsu-shadow-lg, 0 1rem 3rem rgba(0, 0, 0, 0.175));
    transform: translateY(-2px);
    border-color: var(--scsu-color-primary, #b31b34);
}

.card-scsu-interactive:focus {
    outline: 3px solid var(--scsu-color-primary, #b31b34);
    outline-offset: 2px;
}

.card-scsu-interactive:active {
    transform: translateY(0);
    box-shadow: var(--scsu-shadow, 0 0.5rem 1rem rgba(0, 0, 0, 0.15));
}

/* ============================================
   CARD GROUPS
   Multiple cards in a row
   ============================================ */

.card-group-scsu {
    display: flex;
    flex-wrap: wrap;
    gap: var(--scsu-spacing-4, 1rem);
    margin-bottom: var(--scsu-spacing-4, 1rem);
}

.card-group-scsu .card-scsu {
    flex: 1 0 0;
    margin-bottom: 0;
}

/* ============================================
   CARD DECK
   Equal height cards in a row
   ============================================ */

.card-deck-scsu {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--scsu-spacing-4, 1rem);
    margin-bottom: var(--scsu-spacing-4, 1rem);
}

/* ============================================
   CARD ACTIONS
   Action buttons in card footer
   ============================================ */

.card-actions-scsu {
    display: flex;
    gap: var(--scsu-spacing-2, 0.5rem);
    flex-wrap: wrap;
}

.card-actions-scsu .btn-scsu-red,
.card-actions-scsu .btn-scsu-secondary {
    margin: 0;
}

/* ============================================
   STATUS CARDS
   Quick status/metric display
   ============================================ */

.status-card-scsu {
    text-align: center;
    border-left: 4px solid var(--scsu-color-primary, #b31b34);
}

.status-card-value {
    font-size: 2.5rem;
    font-weight: var(--scsu-font-weight-bold, 700);
    color: var(--scsu-color-primary, #b31b34);
    margin-bottom: var(--scsu-spacing-2, 0.5rem);
}

.status-card-label {
    font-size: var(--scsu-font-size-sm, 0.875rem);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--scsu-text-secondary, #6c757d);
}

/* ============================================
   CARD SIZE VARIANTS
   ============================================ */

.card-scsu-sm .card-body-scsu,
.card-scsu-sm .card-header-scsu,
.card-scsu-sm .card-footer-scsu {
    padding: var(--scsu-spacing-3, 0.75rem);
}

.card-scsu-lg .card-body-scsu,
.card-scsu-lg .card-header-scsu,
.card-scsu-lg .card-footer-scsu {
    padding: var(--scsu-spacing-6, 2rem);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .card-group-scsu {
        flex-direction: column;
    }
    
    .card-deck-scsu {
        grid-template-columns: 1fr;
    }
    
    .card-actions-scsu {
        flex-direction: column;
    }
    
    .card-actions-scsu .btn-scsu-red,
    .card-actions-scsu .btn-scsu-secondary {
        width: 100%;
    }
}

/* ============================================
   COLLAPSIBLE CARD HEADERS
   Bootstrap collapse integration
   ============================================ */

.card-header[data-bs-toggle="collapse"] {
    cursor: pointer;
    user-select: none;
}

.card-header[data-bs-toggle="collapse"]:hover {
    filter: brightness(0.97);
}

.card-header .collapse-chevron {
    transition: transform 0.2s ease;
}

.card-header[aria-expanded="false"] .collapse-chevron {
    transform: rotate(-90deg);
}

/* End of SCSU Card Components */