/**
 * BreedForge - Basis CSS
 * 
 * Zentrale Styles für alle Frontend-Bereiche:
 * - CSS Custom Properties (Design Tokens)
 * - Buttons
 * - Formulare
 * - Status Badges
 * - Notices
 * - Modals
 * - Loading States
 * - Responsive Utilities
 * 
 * @package BreedForge
 * @since 3.9.78
 * @modified 3.9.79 - 2-Spalten Layout für Checkbox-Gruppen bei voller Breite
 */

/* ==================================
   CSS Custom Properties (Design Tokens)
   ================================== */
:root {
    /* Primärfarben - Emerald */
    --zk-primary: #059669;
    --zk-primary-hover: #047857;
    --zk-primary-light: #d1fae5;
    --zk-primary-dark: #065f46;
    
    /* Sekundärfarben */
    --zk-secondary: #6b7280;
    --zk-secondary-hover: #4b5563;
    
    /* Status-Farben */
    --zk-success: #059669;
    --zk-success-light: #d1fae5;
    --zk-success-dark: #065f46;
    
    --zk-warning: #d97706;
    --zk-warning-light: #fef3c7;
    --zk-warning-dark: #92400e;
    
    --zk-danger: #dc2626;
    --zk-danger-light: #fee2e2;
    --zk-danger-dark: #991b1b;
    
    --zk-info: #2563eb;
    --zk-info-light: #dbeafe;
    --zk-info-dark: #1e40af;
    
    /* Grautöne */
    --zk-gray-50: #f9fafb;
    --zk-gray-100: #f3f4f6;
    --zk-gray-200: #e5e7eb;
    --zk-gray-300: #d1d5db;
    --zk-gray-400: #9ca3af;
    --zk-gray-500: #6b7280;
    --zk-gray-600: #4b5563;
    --zk-gray-700: #374151;
    --zk-gray-800: #1f2937;
    --zk-gray-900: #111827;
    
    /* Abstände */
    --zk-radius-sm: 6px;
    --zk-radius-md: 8px;
    --zk-radius-lg: 12px;
    --zk-radius-xl: 16px;
    --zk-radius-full: 9999px;
    
    /* Schatten */
    --zk-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --zk-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --zk-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --zk-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --zk-transition-fast: 150ms ease;
    --zk-transition-normal: 200ms ease;
    --zk-transition-slow: 300ms ease;
}

/* ==================================
   Buttons - Emerald Design
   ================================== */
.zk-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid var(--zk-gray-300);
    border-radius: var(--zk-radius-md);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--zk-transition-normal);
    background: #fff;
    color: var(--zk-gray-700);
}

.zk-btn:hover {
    background: var(--zk-gray-50);
    border-color: var(--zk-gray-400);
    color: var(--zk-gray-900);
}

.zk-btn.active {
    background: var(--zk-primary);
    color: #fff;
    border-color: var(--zk-primary);
}

.zk-btn.active:hover {
    background: var(--zk-primary-hover);
    border-color: var(--zk-primary-hover);
}

.zk-btn-primary {
    background: linear-gradient(135deg, var(--zk-primary) 0%, var(--zk-primary-hover) 100%);
    color: #fff;
    border-color: transparent;
    box-shadow: var(--zk-shadow-sm);
}

.zk-btn-primary:hover {
    background: linear-gradient(135deg, var(--zk-primary-hover) 0%, var(--zk-primary-dark) 100%);
    color: #fff;
    box-shadow: var(--zk-shadow-md);
    transform: translateY(-1px);
}

.zk-btn-secondary {
    background: var(--zk-gray-600);
    color: #fff;
    border-color: var(--zk-gray-600);
}

.zk-btn-secondary:hover {
    background: var(--zk-gray-700);
    border-color: var(--zk-gray-700);
    color: #fff;
}

.zk-btn-success {
    background: linear-gradient(135deg, var(--zk-success) 0%, #047857 100%);
    color: #fff;
    border-color: transparent;
}

.zk-btn-success:hover {
    background: linear-gradient(135deg, #047857 0%, #065f46 100%);
    color: #fff;
}

.zk-btn-warning {
    background: linear-gradient(135deg, var(--zk-warning) 0%, #b45309 100%);
    color: #fff;
    border-color: transparent;
}

.zk-btn-warning:hover {
    background: linear-gradient(135deg, #b45309 0%, #92400e 100%);
    color: #fff;
}

.zk-btn-danger {
    background: linear-gradient(135deg, var(--zk-danger) 0%, #b91c1c 100%);
    color: #fff;
    border-color: transparent;
}

.zk-btn-danger:hover {
    background: linear-gradient(135deg, #b91c1c 0%, #991b1b 100%);
    color: #fff;
}

.zk-btn-link {
    background: transparent;
    border: none;
    color: var(--zk-gray-500);
    padding: 10px 16px;
}

.zk-btn-link:hover {
    color: var(--zk-gray-700);
}

.zk-btn-outline {
    background: #fff;
    color: var(--zk-gray-700);
    border: 1px solid var(--zk-gray-300);
    box-shadow: var(--zk-shadow-sm);
}

.zk-btn-outline:hover {
    background: var(--zk-gray-50);
    color: var(--zk-gray-900);
    box-shadow: var(--zk-shadow-md);
}

/* Icon-Buttons für Tabellen-Aktionen */
.zk-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    padding: 0;
    border: none;
    border-radius: var(--zk-radius-md);
    background: transparent;
    color: var(--zk-gray-400);
    cursor: pointer;
    transition: all var(--zk-transition-normal);
    text-decoration: none;
}

.zk-btn-icon:hover {
    background: var(--zk-primary-light);
    color: var(--zk-primary);
}

.zk-btn-icon.zk-btn-icon-edit:hover {
    background: var(--zk-info-light);
    color: var(--zk-info);
}

.zk-btn-icon.zk-btn-icon-delete:hover {
    background: var(--zk-danger-light);
    color: var(--zk-danger);
}

.zk-btn-icon .dashicons {
    font-size: 18px;
    width: 18px;
    height: 18px;
    line-height: 18px;
}

.zk-nav-buttons {
    display: flex;
    gap: 8px;
}

.zk-actions {
    display: flex;
    gap: 4px;
    flex-wrap: nowrap;
}

/* ==================================
   Formulare - Basis Styles
   ================================== */
.zk-form {
    background: transparent;
    border-radius: 0;
    padding: 0;
    border: none;
}

.zk-form-section {
    background: #fff;
    border-radius: var(--zk-radius-xl);
    padding: 24px 28px;
    margin-bottom: 10px;
    box-shadow: var(--zk-shadow-sm);
    border: 1px solid var(--zk-gray-200);
}

.zk-form-section h4 {
    margin: 0 0 20px 0;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--kt-farbe, var(--zk-primary));
    color: var(--zk-gray-900);
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.zk-form-section h4 .dashicons {
    font-size: 20px;
    width: 20px;
    height: 20px;
    color: var(--kt-farbe, var(--zk-primary));
}

/* Form-Row Grid Layout */
.zk-form-row {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 16px 20px !important;
    margin-bottom: 0 !important;
    align-items: start !important;
}

.zk-form-row > .zk-form-group {
    margin-bottom: 0 !important;
}

/* Form-Group Basis-Styling */
.zk-form-group {
    margin-bottom: 20px;
    position: relative;
    box-sizing: border-box;
}

.zk-form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--zk-gray-700);
    font-size: 14px;
}

.zk-form-group label .zk-required {
    color: var(--zk-danger);
    font-weight: bold;
    margin-left: 2px;
}

/* Input-Felder */
.zk-form-group input[type="text"],
.zk-form-group input[type="date"],
.zk-form-group input[type="email"],
.zk-form-group input[type="number"],
.zk-form-group select,
.zk-form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--zk-gray-300);
    border-radius: var(--zk-radius-md);
    font-size: 14px;
    background: #fff;
    transition: all var(--zk-transition-normal);
    color: var(--zk-gray-900);
    box-sizing: border-box;
}

/* Explizites Padding für Date-Inputs (Browser-Overrides überschreiben) */
.zk-form-group input[type="date"],
.zk-form input[type="date"],
.zk-kontrolle-form input[type="date"],
input[type="date"].zk-form-control {
    padding: 12px 16px !important;
    height: auto !important;
    line-height: 1.5 !important;
}

.zk-form-group input:hover,
.zk-form-group select:hover,
.zk-form-group textarea:hover {
    border-color: var(--zk-gray-400);
}

.zk-form-group input:focus,
.zk-form-group select:focus,
.zk-form-group textarea:focus {
    outline: none;
    border-color: var(--zk-primary);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.15);
}

.zk-field-help,
.zk-field-hint {
    margin-top: 6px;
    font-size: 12px;
    color: var(--zk-gray-500);
    font-style: italic;
}

/* Readonly Felder */
.zk-readonly-field {
    padding: 8px 10px;
    background: var(--zk-gray-50);
    border: 1px solid var(--zk-gray-200);
    border-radius: var(--zk-radius-md);
    font-size: 14px;
    color: var(--zk-gray-600);
    min-height: 14px;
    display: flex;
    align-items: center;
}

/* Full-Width Form Group */
.zk-form-row > .zk-form-group-full,
.zk-form-group.zk-form-group-full {
    grid-column: 1 / -1 !important;
}

/* Form Actions - Dynamische Kontrolltyp-Farbe */
.zk-form-actions {
    background: #fff;
    border-radius: var(--zk-radius-xl);
    padding: 20px 28px;
    margin-bottom: 20px;
    box-shadow: var(--zk-shadow-sm);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    border-left: 4px solid var(--kt-farbe, var(--zk-primary));
}

.zk-form-actions .zk-btn {
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
}

.zk-form-actions .zk-btn-success {
    background: linear-gradient(135deg, var(--zk-success) 0%, #047857 100%);
    border: none;
    color: #fff;
    box-shadow: 0 2px 8px rgba(5, 150, 105, 0.3);
}

.zk-form-actions .zk-btn-success:hover {
    box-shadow: 0 4px 12px rgba(5, 150, 105, 0.4);
    transform: translateY(-1px);
}

/* ==================================
   Checkboxen - Modernisiert
   ================================== */
.zk-checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.zk-checkbox-item {
    display: flex !important;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 10px 14px;
    background: var(--zk-gray-50);
    border: 1px solid var(--zk-gray-200);
    border-radius: var(--zk-radius-md);
    transition: all var(--zk-transition-normal);
    margin-bottom: 8px;
}

.zk-checkbox-item:hover {
    background: var(--zk-gray-100);
    border-color: var(--zk-gray-300);
}

.zk-checkbox-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--zk-primary);
    flex-shrink: 0;
}

.zk-checkbox-item .zk-checkbox-label {
    flex: 1;
    font-weight: normal;
}

.zk-checkbox-item .zk-checkbox-email {
    color: var(--zk-gray-500);
    font-size: 13px;
    margin-left: 5px;
}

.zk-checkbox-option {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 10px 14px;
    background: var(--zk-gray-50);
    border: 1px solid var(--zk-gray-200);
    border-radius: var(--zk-radius-md);
    transition: all var(--zk-transition-normal);
}

.zk-checkbox-option:hover {
    background: var(--zk-gray-100);
    border-color: var(--zk-gray-300);
}

.zk-checkbox-option:has(input:checked) {
    background: var(--zk-primary-light);
    border-color: var(--zk-primary);
}

/* 2-Spalten Layout für Checkbox-Gruppen bei voller Breite */
.zk-form-group-full .zk-checkbox-group,
.zk-field-full .zk-checkbox-group,
.zk-group-2col .zk-field-full .zk-checkbox-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

/* Auf mobilen Geräten zurück zu 1 Spalte */
@media (max-width: 768px) {
    .zk-form-group-full .zk-checkbox-group,
    .zk-field-full .zk-checkbox-group,
    .zk-group-2col .zk-field-full .zk-checkbox-group {
        grid-template-columns: 1fr;
    }
}

.zk-checkbox-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--zk-primary);
}

/* ==================================
   Status Badges
   ================================== */
.zk-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--zk-radius-full);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.zk-status .dashicons {
    font-size: 14px;
    width: 14px;
    height: 14px;
    line-height: 14px;
}

.zk-status-entwurf {
    background: linear-gradient(135deg, var(--zk-gray-100) 0%, var(--zk-gray-200) 100%);
    color: var(--zk-gray-700);
}

.zk-status-in_bearbeitung {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: var(--zk-warning-dark);
}

.zk-status-abgeschlossen {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: var(--zk-success-dark);
}

.zk-status-storniert {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: var(--zk-danger-dark);
}

/* Status Badge Inline */
.zk-status-badge-inline {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--zk-radius-full);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.zk-status-badge-inline .dashicons {
    font-size: 12px;
    width: 12px;
    height: 12px;
}

.zk-status-badge-inline.pending {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}

.zk-status-badge-inline.completed {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}

.zk-status-badge-inline.cancelled {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}

/* ==================================
   Badges
   ================================== */
.zk-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--zk-radius-md);
    font-size: 12px;
    font-weight: 500;
}

.zk-badge-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    color: var(--zk-success-dark);
}

.zk-badge-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: var(--zk-warning-dark);
}

.zk-badge-info {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: var(--zk-info-dark);
}

.zk-badge-danger {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: var(--zk-danger-dark);
}

.zk-badge-muted {
    background: var(--zk-gray-100);
    color: var(--zk-gray-600);
}

/* ==================================
   Notices - Modernisiert
   ================================== */
.zk-notice {
    padding: 16px 20px;
    border-radius: var(--zk-radius-lg);
    margin-bottom: 20px;
    border-left: 4px solid;
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.zk-notice .dashicons {
    flex-shrink: 0;
    margin-top: 2px;
}

.zk-notice-info {
    background: linear-gradient(135deg, #dbeafe 0%, #eff6ff 100%);
    border-color: var(--zk-info);
    color: var(--zk-info-dark);
}

.zk-notice-success {
    background: linear-gradient(135deg, #d1fae5 0%, #ecfdf5 100%);
    border-color: var(--zk-success);
    color: var(--zk-success-dark);
}

.zk-notice-warning {
    background: linear-gradient(135deg, #fef3c7 0%, #fffbeb 100%);
    border-color: var(--zk-warning);
    color: var(--zk-warning-dark);
}

.zk-notice-error {
    background: linear-gradient(135deg, #fee2e2 0%, #fef2f2 100%);
    border-color: var(--zk-danger);
    color: var(--zk-danger-dark);
}

/* ==================================
   Modal
   ================================== */
.zk-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 100000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zk-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
}

.zk-modal-content {
    position: relative;
    background: #fff;
    border-radius: var(--zk-radius-lg);
    box-shadow: var(--zk-shadow-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: zkModalSlideIn 0.3s ease;
}

@keyframes zkModalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.zk-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--zk-gray-200);
    background: var(--zk-gray-50);
    border-radius: var(--zk-radius-lg) var(--zk-radius-lg) 0 0;
}

.zk-modal-header h3 {
    margin: 0;
    font-size: 18px;
    color: var(--zk-gray-900);
    display: flex;
    align-items: center;
    gap: 10px;
}

.zk-modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--zk-gray-400);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--zk-radius-sm);
    transition: all var(--zk-transition-fast);
}

.zk-modal-close:hover {
    background: var(--zk-gray-100);
    color: var(--zk-gray-600);
}

.zk-modal-body {
    padding: 20px;
}

.zk-modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--zk-gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    background: var(--zk-gray-50);
    border-radius: 0 0 var(--zk-radius-lg) var(--zk-radius-lg);
}

/* ==================================
   Loading State
   ================================== */
.zk-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px;
}

.zk-loading .zk-spinner,
.zk-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--zk-gray-200);
    border-top: 4px solid var(--zk-primary);
    border-radius: 50%;
    animation: zkSpin 1s linear infinite;
}

@keyframes zkSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==================================
   Links
   ================================== */
.zk-link {
    color: var(--zk-primary);
    text-decoration: none;
    font-weight: 500;
}

.zk-link:hover {
    text-decoration: underline;
    color: var(--zk-primary-hover);
}

/* ==================================
   Statistiken
   ================================== */
.zk-stat {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--zk-gray-600);
    font-size: 14px;
}

.zk-stat strong {
    color: var(--zk-gray-900);
    font-size: 18px;
    font-weight: 600;
}

.zk-stat-offen strong {
    color: var(--zk-primary);
}

/* ==================================
   No Results
   ================================== */
.zk-no-results {
    text-align: center;
    padding: 60px 20px;
    background: var(--zk-gray-50);
    border-radius: var(--zk-radius-lg);
}

.zk-no-results .dashicons {
    font-size: 48px;
    width: 48px;
    height: 48px;
    color: var(--zk-gray-300);
    margin-bottom: 16px;
}

.zk-no-results p {
    color: var(--zk-gray-500);
    margin-bottom: 20px;
    font-size: 16px;
}

/* ==================================
   Tabellen - Basis
   ================================== */
.zk-table {
    width: 100%;
    border-collapse: collapse;
}

.zk-table thead {
    background: var(--zk-gray-50);
}

.zk-table th,
.zk-table td {
    padding: 14px 16px;
    text-align: left;
    border-bottom: 1px solid var(--zk-gray-200);
}

.zk-table th {
    font-weight: 600;
    color: var(--zk-gray-700);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.zk-table tbody tr:hover {
    background: var(--zk-gray-50);
}

/* ==================================
   Print Styles
   ================================== */
@media print {
    .zk-btn,
    .zk-btn-icon,
    .zk-nav-buttons,
    .zk-form-actions {
        display: none !important;
    }
}

/* ==================================
   Responsive - Basis
   ================================== */
@media (max-width: 768px) {
    .zk-form-row {
        grid-template-columns: 1fr !important;
        gap: 16px !important;
    }
    
    .zk-form-row > .zk-form-group {
        margin-bottom: 0 !important;
    }
    
    .zk-form-actions {
        flex-direction: column;
    }
    
    .zk-form-actions .zk-btn {
        width: 100%;
        justify-content: center;
    }
    
    .zk-table {
        font-size: 14px;
    }
    
    .zk-table th,
    .zk-table td {
        padding: 10px 12px;
    }
}