/**
 * Sistema de Generación de Artículos - CSS Personalizado
 * Versión 2.0 - Incluye estilos para Sites RSS
 */

/* =====================================================
   VARIABLES CSS PERSONALIZADAS
   ===================================================== */

:root {
    /* Colores principales */
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --primary-light: #66b3ff;
    
    /* Colores de estado */
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    /* Grises */
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-600: #6c757d;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    /* Espaciado */
    --spacer-xs: 0.25rem;
    --spacer-sm: 0.5rem;
    --spacer-md: 1rem;
    --spacer-lg: 1.5rem;
    --spacer-xl: 3rem;
    
    /* Bordes */
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 1rem;
    
    /* Sombras */
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* Transiciones */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* =====================================================
   ESTILOS GENERALES
   ===================================================== */

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
}

/* Scroll suave */
html {
    scroll-behavior: smooth;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-600);
}

/* =====================================================
   NAVEGACIÓN Y HEADER
   ===================================================== */

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    transition: all var(--transition-fast);
    border-radius: var(--border-radius);
    margin: 0 0.125rem;
}

.navbar-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.navbar-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    font-weight: 600;
}

/* Dropdown menus mejorados */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-lg);
    padding: 0.5rem 0;
    margin-top: 0.5rem;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    transition: all var(--transition-fast);
    border-radius: 0;
}

.dropdown-item:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateX(4px);
}

.dropdown-header {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.875rem;
}

/* =====================================================
   TARJETAS Y CONTENEDORES
   ===================================================== */

.card {
    border: none;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-radius: var(--border-radius-lg);
}

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

.card-header {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0 !important;
}

/* Tarjetas de estadísticas */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    color: white;
    transition: all var(--transition-normal);
}

.stats-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.stats-card .card-body {
    padding: 1.5rem;
}

.stats-card h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* =====================================================
   TARJETAS DE SITES (ESPECÍFICO)
   ===================================================== */

.site-card {
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.site-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.site-card .card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border-bottom: none;
}

.site-card .badge {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
}

.site-favicon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    border-radius: 50%;
    color: white;
}

/* =====================================================
   FORMULARIOS MEJORADOS
   ===================================================== */

.form-control {
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    padding: 0.75rem 1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
    transform: translateY(-1px);
}

.form-control.is-valid {
    border-color: var(--success-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='m2.3 6.73.76-.78L4 6.96l2.94-2.94.76.78L4 9.5z'/%3e%3c/svg%3e");
}

.form-control.is-invalid {
    border-color: var(--danger-color);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='m5.5 5.5 1 1m0-1-1 1'/%3e%3c/svg%3e");
}

.input-group-text {
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    border: 2px solid var(--gray-200);
    border-right: none;
}

.form-label {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.form-text {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-top: 0.25rem;
}

/* Form switches mejorados */
.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.form-check-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(0, 123, 255, 0.25);
}

/* =====================================================
   BOTONES MEJORADOS
   ===================================================== */

.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 0.5rem 1rem;
    transition: all var(--transition-fast);
    border-width: 2px;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #004085 100%);
    border-color: var(--primary-dark);
}

.btn-group .btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow);
}

/* Botones de acción específicos */
.btn-action-group {
    display: flex;
    gap: 0.25rem;
}

.btn-action-group .btn {
    flex: 1;
    min-width: auto;
}

/* =====================================================
   TABLAS MEJORADAS
   ===================================================== */

.table {
    margin-bottom: 0;
}

.table th {
    border-top: none;
    border-bottom: 2px solid var(--primary-color);
    font-weight: 600;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 100%);
    padding: 1rem 0.75rem;
}

.table td {
    padding: 1rem 0.75rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-200);
}

.table-hover tbody tr {
    transition: all var(--transition-fast);
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 123, 255, 0.05);
    transform: scale(1.01);
    box-shadow: var(--shadow-sm);
}

/* =====================================================
   BADGES Y ETIQUETAS
   ===================================================== */

.badge {
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--border-radius);
}

.badge.bg-success {
    background: linear-gradient(135deg, var(--success-color) 0%, #1e7e34 100%) !important;
}

.badge.bg-warning {
    background: linear-gradient(135deg, var(--warning-color) 0%, #e0a800 100%) !important;
    color: var(--gray-800) !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, var(--danger-color) 0%, #bd2130 100%) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, var(--info-color) 0%, #117a8b 100%) !important;
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

/* =====================================================
   ALERTS MEJORADOS
   ===================================================== */

.alert {
    border: none;
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border-left: 4px solid var(--success-color);
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left: 4px solid var(--danger-color);
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
    border-left: 4px solid var(--warning-color);
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    color: #0c5460;
    border-left: 4px solid var(--info-color);
}

/* =====================================================
   MODALS MEJORADOS
   ===================================================== */

.modal-content {
    border: none;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 2px solid var(--primary-color);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.modal-header.bg-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
}

.modal-footer {
    border-top: 1px solid var(--gray-200);
    border-radius: 0 0 var(--border-radius-xl) var(--border-radius-xl);
}

/* =====================================================
   TOASTS Y NOTIFICACIONES
   ===================================================== */

.toast {
    border: none;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    margin-bottom: 0.5rem;
}

.toast-header {
    border-bottom: none;
    font-weight: 600;
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.toast-body {
    padding: 0.75rem;
}

/* =====================================================
   LOADING Y ESTADOS
   ===================================================== */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    backdrop-filter: blur(2px);
}

.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Estados de carga en botones */
.btn-loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn-loading::after {
    content: "";
    width: 1rem;
    height: 1rem;
    margin-left: 0.5rem;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    display: inline-block;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* =====================================================
   BREADCRUMBS
   ===================================================== */

.breadcrumb {
    background: none;
    padding: 0;
    margin-bottom: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--primary-color);
    font-weight: bold;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* =====================================================
   GRID DE SITES (ESPECÍFICO)
   ===================================================== */

.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.site-grid-item {
    transition: all var(--transition-normal);
}

.site-grid-item:hover {
    transform: translateY(-8px);
}

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

/* Tablet */
@media (max-width: 768px) {
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .btn-group {
        flex-direction: column;
    }
    
    .btn-group .btn {
        border-radius: var(--border-radius) !important;
        margin-bottom: 0.25rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
    
    .stats-card h2 {
        font-size: 2rem;
    }
}

/* Móvil */
@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
    
    .btn {
        padding: 0.75rem 1rem;
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .btn-group {
        width: 100%;
    }
    
    .modal-dialog {
        margin: 0.5rem;
    }
    
    .sites-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0.5rem;
    }
    
    .stats-card h2 {
        font-size: 1.75rem;
    }
    
    .table {
        font-size: 0.8rem;
    }
    
    .table th,
    .table td {
        padding: 0.5rem 0.25rem;
    }
}

/* =====================================================
   ANIMACIONES PERSONALIZADAS
   ===================================================== */

/* Fade in */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Pulse para elementos importantes */
@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Shake para errores */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
}

/* =====================================================
   UTILIDADES ESPECÍFICAS
   ===================================================== */

/* Text utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: bold;
}

/* Border utilities */
.border-primary-thick {
    border: 3px solid var(--primary-color) !important;
}

/* Shadow utilities */
.shadow-primary {
    box-shadow: 0 0.5rem 1rem rgba(0, 123, 255, 0.3) !important;
}

/* Hover effects */
.hover-lift {
    transition: transform var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

/* Status indicators */
.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.5rem;
}

.status-indicator.active {
    background-color: var(--success-color);
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.3);
}

.status-indicator.inactive {
    background-color: var(--gray-600);
    box-shadow: 0 0 0 2px rgba(108, 117, 125, 0.3);
}

.status-indicator.error {
    background-color: var(--danger-color);
    box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.3);
}

/* =====================================================
   DARK MODE (PREPARADO PARA FUTURO)
   ===================================================== */

@media (prefers-color-scheme: dark) {
    /* Variables para dark mode */
    :root {
        --bg-color: #1a1a1a;
        --text-color: #ffffff;
        --card-bg: #2d2d2d;
    }
    
    /* Activar solo si se implementa dark mode */
    /*
    body {
        background-color: var(--bg-color);
        color: var(--text-color);
    }
    
    .card {
        background-color: var(--card-bg);
    }
    */
}

/* =====================================================
   PRINT STYLES
   ===================================================== */

@media print {
    .navbar,
    .btn,
    .toast-container,
    .loading-overlay {
        display: none !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #000 !important;
    }
    
    .table {
        border: 1px solid #000 !important;
    }
    
    .table th,
    .table td {
        border: 1px solid #000 !important;
    }
}