/* =============================================================================
   Modern Absence Entry Card System - CSS Styling
   Professional styling for absence cards with responsive design
   ============================================================================= */

/* =============================================================================
   Absence Card Base Styling
   ============================================================================= */

.absence-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border: 1px solid rgba(74, 63, 122, 0.15);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease-in-out;
    position: relative;
    overflow: hidden;
}

.absence-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.absence-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: rgba(74, 63, 122, 0.25);
}

.absence-card:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 63, 122, 0.1), var(--shadow-lg);
}

/* =============================================================================
   Form Elements within Cards
   ============================================================================= */

.absence-card .form-group {
    margin-bottom: var(--spacing-lg);
}

.absence-card .form-group:last-child {
    margin-bottom: 0;
}

.absence-card .form-label {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-sm);
    display: block;
    font-size: 0.9rem;
    letter-spacing: 0.025em;
}

.absence-card .form-control {
    background-color: #ffffff;
    border: 2px solid rgba(74, 63, 122, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-size: 0.95rem;
    transition: all 0.2s ease-in-out;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.absence-card .form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 63, 122, 0.1), 0 1px 3px rgba(0, 0, 0, 0.1);
    background-color: #ffffff;
}

.absence-card .form-control:hover {
    border-color: rgba(74, 63, 122, 0.2);
}

/* Select Dropdown Styling */
.absence-card select.form-control {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--spacing-sm) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: calc(var(--spacing-lg) + 1.5em);
}

/* =============================================================================
   Radio Button and Checkbox Styling
   ============================================================================= */

.absence-card .form-check-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    background-color: rgba(74, 63, 122, 0.03);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(74, 63, 122, 0.08);
}

.absence-card .form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease-in-out;
}

.absence-card .form-check:hover {
    background-color: rgba(74, 63, 122, 0.05);
}

.absence-card .form-check-input {
    margin: 0;
    width: 1.25rem;
    height: 1.25rem;
    border: 2px solid rgba(74, 63, 122, 0.3);
    border-radius: 50%;
    background-color: #ffffff;
    transition: all 0.2s ease-in-out;
    cursor: pointer;
    flex-shrink: 0;
}

.absence-card .form-check-input[type="checkbox"] {
    border-radius: var(--radius-sm);
}

.absence-card .form-check-input:checked {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 63, 122, 0.15);
}

.absence-card .form-check-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 63, 122, 0.15);
}

.absence-card .form-check-label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-dark);
    cursor: pointer;
    font-size: 0.9rem;
    line-height: 1.4;
    user-select: none;
}

/* Inline form checks for periods */
.absence-card .form-check-inline {
    display: inline-flex;
    margin-right: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background-color: #ffffff;
    border: 1px solid rgba(74, 63, 122, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all 0.2s ease-in-out;
}

.absence-card .form-check-inline:hover {
    border-color: rgba(74, 63, 122, 0.2);
    background-color: rgba(74, 63, 122, 0.02);
}

.absence-card .form-check-inline .form-check-input:checked + .form-check-label {
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

/* =============================================================================
   Container Styling for Dynamic Content
   ============================================================================= */

.absence-card .half-day-container,
.absence-card .period-container {
    background-color: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(74, 63, 122, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-sm);
    transition: all 0.3s ease-in-out;
}

.absence-card .half-day-container.active,
.absence-card .period-container.active {
    background-color: rgba(74, 63, 122, 0.05);
    border-color: rgba(74, 63, 122, 0.2);
    box-shadow: 0 2px 4px rgba(74, 63, 122, 0.1);
}

/* =============================================================================
   Card Header and Title Styling
   ============================================================================= */

.absence-card .card-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 0.8rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* =============================================================================
   Responsive Design for Cards
   ============================================================================= */

@media (max-width: 768px) {
    .absence-card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }
    
    .absence-card .form-check-group {
        padding: var(--spacing-sm);
    }
    
    .absence-card .form-check-inline {
        display: flex;
        margin-right: 0;
        margin-bottom: var(--spacing-sm);
        width: 100%;
    }
    
    .absence-card .grid-2 {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .absence-card .card-number {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        width: 1.5rem;
        height: 1.5rem;
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .absence-card {
        padding: var(--spacing-sm);
        border-radius: var(--radius-md);
    }
    
    .absence-card .form-group {
        margin-bottom: var(--spacing-md);
    }
    
    .absence-card .form-control {
        padding: var(--spacing-sm);
        font-size: 0.9rem;
    }
}

/* =============================================================================
   Animation and Transitions
   ============================================================================= */

.absence-card[style*="display: none"] {
    opacity: 0;
    transform: translateY(-10px);
    transition: none;
}

.absence-card:not([style*="display: none"]) {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.3s ease-in-out;
}

/* Smooth reveal for dynamic containers */
.half-day-container[style*="display: block"],
.period-container[style*="display: block"] {
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
        max-height: 0;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        max-height: 200px;
    }
}

/* =============================================================================
   Focus Management and Accessibility
   ============================================================================= */

.absence-card:focus-within .form-label {
    color: var(--color-primary);
}

.absence-card .form-check-input:focus + .form-check-label {
    color: var(--color-primary);
}

/* Screen reader only content */
.absence-card .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* =============================================================================
   Professional Color Variations
   ============================================================================= */

.absence-card.card-filled {
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f4ff 100%);
    border-color: rgba(74, 63, 122, 0.2);
}

.absence-card.card-error {
    background: linear-gradient(135deg, #fef8f8 0%, #fdf2f2 100%);
    border-color: rgba(231, 76, 60, 0.2);
}

.absence-card.card-error::before {
    background: var(--color-error);
}

.absence-card.card-success {
    background: linear-gradient(135deg, #f7fef8 0%, #f0fdf4 100%);
    border-color: rgba(46, 204, 113, 0.2);
}

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

/* =============================================================================
   Integration with Existing Bootstrap Classes
   ============================================================================= */

/* Ensure cards work well with existing Bootstrap grid */
.col-md-6 .absence-card,
.col-lg-4 .absence-card,
.col-xl-3 .absence-card {
    height: fit-content;
    min-height: 300px;
}

/* Form row compatibility */
.absence-card .form-row {
    display: flex;
    flex-wrap: wrap;
    margin-right: calc(-1 * var(--spacing-sm));
    margin-left: calc(-1 * var(--spacing-sm));
}

.absence-card .form-row > .col,
.absence-card .form-row > [class*="col-"] {
    padding-right: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

/* Table responsive styling within cards */
.absence-card .table-responsive {
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    margin-top: var(--spacing-md);
}