/* Colores de la paleta (consistente con otros paneles) */
:root {
    --primary-color: #004085; /* Azul oscuro más institucional */
    --secondary-color: #6c757d; /* Gris */
    --accent-color: #28a745; /* Verde para éxito */
    --danger-color: #dc3545; /* Rojo para error */
    --warning-color: #ffc107; /* Amarillo para advertencia */
    --info-color: #17a2b8; /* Azul claro para información */
    --light-bg: #f8f9fa; /* Fondo muy claro */
    --dark-text: #343a40; /* Texto oscuro */
    --border-color: #dee2e6; /* Color de borde de input/elementos */
    --shadow-color: rgba(0, 0, 0, 0.1); /* Sombra ligera */
    --card-bg: #ffffff; /* Fondo de tarjetas */
    --tab-inactive-bg: #e9ecef; /* Fondo de tab inactivo */

    /* Nuevos colores para badges de estado */
    --badge-approved-bg: #d4edda;
    --badge-approved-text: #155724;
    --badge-pending-bg: #fff3cd;
    --badge-pending-text: #856404;
    --badge-rejected-bg: #f8d7da;
    --badge-rejected-text: #721c24;
    --badge-active-bg: #e0f7fa;
    --badge-active-text: #007bff;
    --badge-inactive-bg: #e9ecef;
    --badge-inactive-text: #555;

    /* Colores para severidades de logs */
    --log-info-color: #17a2b8;
    --log-warning-color: #ffc107;
    --log-error-color: #dc3545;
    --log-critical-color: #6a0000;
}

/* Base y tipografía */
body {
    font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: var(--light-bg);
    margin: 0;
    padding: 0;
}

.wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.main-header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px var(--shadow-color);
    flex-wrap: wrap;
    gap: 15px;
}

.main-header .logo img {
    height: 50px;
    width: auto;
}

.main-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.main-nav ul li {
    margin: 0 15px;
}

.main-nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    padding: 5px 0;
    position: relative;
    transition: color 0.3s ease;
}

.main-nav ul li a:hover {
    color: var(--accent-color);
}

.main-nav ul li a.active {
    color: var(--accent-color);
}

.main-nav ul li a.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 100%;
    height: 2px;
    background-color: var(--accent-color);
}


.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    white-space: nowrap;
}
.user-info span {
    font-weight: bold;
}
.btn-logout {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}
.btn-logout:hover {
    background-color: rgba(255, 255, 255, 0.3);
}


/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    max-width: 1300px;
    margin: 20px auto;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 10px var(--shadow-color);
}

.page-title {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.2rem;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

/* Alertas */
.alert {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    font-weight: bold;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.alert i {
    font-size: 1.2rem;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Tab System */
.admin-tabs-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 2rem;
    gap: 5px;
}

.tab-button {
    background-color: var(--tab-inactive-bg);
    border: 1px solid var(--border-color);
    border-bottom: none;
    padding: 12px 20px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    color: var(--secondary-color);
    border-top-left-radius: 8px;
    border-top-right-radius: 8px;
    transition: background-color 0.3s ease, color 0.3s ease;
    flex-grow: 1;
    text-align: center;
    white-space: nowrap;
}

.tab-button:hover {
    background-color: #e2e6ea;
    color: var(--dark-text);
}

.tab-button.active {
    background-color: var(--card-bg);
    color: var(--primary-color);
    border-color: var(--border-color);
    border-bottom-color: var(--card-bg);
    z-index: 1;
}

.admin-section {
    display: none;
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-top-left-radius: 0;
    border-top-right-radius: 8px;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
    background-color: var(--card-bg);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.admin-section.active {
    display: block;
}

.admin-section h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    border-bottom: 1px dashed var(--border-color);
    padding-bottom: 0.5rem;
}

/* Cards (for forms, stats etc.) */
.card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 2px 8px var(--shadow-color);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

/* Forms general styling */
.admin-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--dark-text);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group input[type="url"],
.form-group input[type="time"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: calc(100% - 20px);
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 64, 133, 0.25);
    outline: none;
}

/* Nuevo estilo para el checkbox "activo" */
.form-group.form-check {
    display: flex;
    align-items: center;
    gap: 10px;
}
.form-group.form-check input[type="checkbox"] {
    width: auto;
    margin: 0;
}
.form-group.form-check label {
    margin-bottom: 0;
    cursor: pointer;
}

/* Estilo para campos readonly */
.readonly-field {
    background-color: #e9ecef;
    cursor: not-allowed;
    opacity: 0.8;
}

/* Estilos para previsualización de imágenes en formularios de edición */
.img-preview {
    max-width: 150px;
    height: auto;
    display: block;
    margin-top: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
}


/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #003366;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
    transform: translateY(-2px);
}

.btn-small {
    padding: 8px 15px;
    font-size: 0.9rem;
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}
.btn-danger:hover {
    background-color: #c82333;
}

.btn-info {
    background-color: var(--info-color);
    color: white;
}
.btn-info:hover {
    background-color: #138496;
}


.form-actions {
    display: flex;
    justify-content: flex-start;
    gap: 1rem;
    margin-top: 1rem;
}

/* Nuevo estilo para botones de filtro en línea */
.form-actions-inline {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 15px;
}

.form-group-inline { /* Estilo para elementos de filtro en línea */
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 10px; /* Espacio entre grupos de filtros */
    min-width: 250px; /* Ancho mínimo para cada grupo de filtro */
}

.filter-form {
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--card-bg);
    margin-bottom: 2rem;
    display: flex; /* Contenedor flex para los grupos de filtro */
    flex-wrap: wrap;
    gap: 20px; /* Espacio entre los grupos de filtro */
    align-items: flex-end; /* Alinea los elementos al final (útil si los labels tienen diferente altura) */
}
.filter-form .form-group-inline label {
    margin-bottom: 0; /* Ajuste para la alineación en línea */
    flex-shrink: 0; /* Evita que el label se encoja */
}
.filter-form .form-group-inline input,
.filter-form .form-group-inline select {
    flex-grow: 1; /* Permite que los inputs/selects crezcan para llenar el espacio */
    width: auto; /* Ancho automático para que flexbox lo maneje */
    min-width: 120px; /* Mínimo para inputs dentro de filtros */
}


/* Estilos de listados (para los archivos listar_*.php incluidos) */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
}

.data-table th, .data-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background-color: var(--primary-color);
    color: white;
    font-weight: bold;
    text-transform: uppercase;
    font-size: 0.9em;
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--light-bg);
}

.data-table tbody tr:hover {
    background-color: #e9f5ff;
}

.data-table .actions-column {
    white-space: nowrap;
    width: 1%;
    text-align: center;
}

.data-table .actions-column .btn {
    margin: 0 3px;
}

/* Estilos para badges de estado (Aprobado, Pendiente, Activo, etc.) */
.status-badge {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: bold;
    display: inline-block;
    white-space: nowrap;
}

.status-approved {
    background-color: var(--badge-approved-bg);
    color: var(--badge-approved-text);
}
.status-pending {
    background-color: var(--badge-pending-bg);
    color: var(--badge-pending-text);
}
.status-rejected {
    background-color: var(--badge-rejected-bg);
    color: var(--badge-rejected-text);
}
.status-active {
    background-color: var(--badge-active-bg);
    color: var(--badge-active-text);
}
.status-inactive {
    background-color: var(--badge-inactive-bg);
    color: var(--badge-inactive-text);
}

/* Estilos específicos para la sección de estadísticas (mostrar_estadisticas.php) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 2rem;
}

.stat-card {
    text-align: center;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease;
}
.stat-card:hover {
    transform: translateY(-5px);
}

.stat-card h4 {
    color: var(--primary-color);
    margin-top: 0;
    font-size: 1.2rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--dark-text);
    margin: 0.5rem 0;
}

.stat-pending .stat-number { color: var(--warning-color); }
.stat-approved .stat-number { color: var(--accent-color); }
.stat-rejected .stat-number { color: var(--danger-color); }

.text-danger {
    color: var(--danger-color);
    font-size: 0.9em;
}
.text-muted {
    color: var(--secondary-color);
    font-style: italic;
    text-align: center;
    margin-top: 1rem;
}

/* Estilos específicos para la sección de logs (ver_logs.php) */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.pagination-current {
    background-color: var(--primary-color);
    color: white;
    padding: 8px 12px;
    border-radius: 5px;
    font-weight: bold;
}

/* Estilos para severidad en tablas de logs */
.severity-INFO { color: var(--log-info-color); font-weight: bold; }
.severity-WARNING { color: var(--log-warning-color); font-weight: bold; }
.severity-ERROR { color: var(--log-error-color); font-weight: bold; }
.severity-CRITICAL { color: var(--log-critical-color); font-weight: bold; }


/* Tools List */
.tools-list {
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

/* Footer */
.main-footer {
    background-color: var(--dark-text);
    color: white;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
    box-shadow: 0 -2px 5px var(--shadow-color);
}

/* Responsividad */
@media (max-width: 992px) {
    .main-header {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    .main-nav ul {
        margin-top: 1rem;
    }
    .main-nav ul li {
        margin: 5px 10px;
    }
    .user-info {
        flex-direction: column;
        align-items: center;
        gap: 10px;
    }
    .main-content {
        padding: 1rem;
        margin: 10px auto;
    }
    .admin-tabs-container {
        flex-direction: column;
        gap: 0;
    }
    .tab-button {
        border-radius: 0;
        border-bottom: 1px solid var(--border-color);
        border-top: none;
        width: 100%;
    }
    .tab-button.active {
        border-bottom-color: var(--border-color);
        border-top-left-radius: 0;
        border-top-right-radius: 0;
    }
    .admin-section {
        border-radius: 0;
        border-top: none;
    }
    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .btn {
        width: 100%;
    }
    .stats-grid {
        grid-template-columns: 1fr;
    }
    .data-table th, .data-table td {
        padding: 8px 10px;
    }
    .data-table {
        font-size: 0.9em;
    }
    .form-group-inline {
        min-width: unset;
        width: 100%;
    }
    .form-actions-inline {
        flex-direction: column;
        align-items: stretch;
    }
    .filter-form {
        gap: 10px;
    }
}

@media (max-width: 576px) {
    .main-header {
        padding: 0.8rem;
    }
    .page-title {
        font-size: 1.8rem;
    }
    .tab-button {
        font-size: 0.9rem;
        padding: 10px 15px;
    }
    .admin-section {
        padding: 1rem;
    }
    .data-table th, .data-table td {
        font-size: 0.8em;
    }
}