:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #7209b7;
    --success: #06d6a0;
    --warning: #ffd166;
    --danger: #ef476f;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;
    --gray-light: #e9ecef;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f7fb;
    color: #333;
    line-height: 1.6;
}

.admin-container {
    min-height: 100vh;
}

/* Header Styles */
.admin-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 1rem 0;
    box-shadow: var(--box-shadow);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-section i {
    font-size: 1.8rem;
}

.logo-section h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

/* File Input */
.file-input-container {
    position: relative;
}

.file-input-container input[type="file"] {
    position: absolute;
    left: -9999px;
}

.file-input-label {
    display: inline-block;
    padding: 0.75rem 1rem;
    background-color: var(--gray-light);
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    margin-right: 0.5rem;
}

.file-input-label:hover {
    background-color: #dde1e7;
}

/* Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

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

.btn-secondary {
    background-color: var(--gray-light);
    color: var(--dark);
}

.btn-secondary:hover {
    background-color: #dde1e7;
}

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

.btn-danger:hover {
    background-color: #e5365f;
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Admin Panel */
.admin-panel {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

.admin-nav {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background-color: white;
    border-radius: var(--border-radius);
    padding: 0.5rem;
    box-shadow: var(--box-shadow);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: none;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray);
}

.nav-btn:hover {
    background-color: var(--gray-light);
    color: var(--dark);
}

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

/* Section Styles */
.admin-section {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
}

.section-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-light);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.section-header h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
}

.section-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Search Box */
.search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box i {
    position: absolute;
    left: 1rem;
    color: var(--gray);
}

.search-box input {
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    width: 250px;
}

/* Filters */
.filters {
    display: flex;
    gap: 0.5rem;
}

.filters select {
    padding: 0.5rem;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    background-color: white;
}

/* Stats Cards */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    padding: 1.5rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background-color: var(--light);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow);
}

.stat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    font-size: 1.5rem;
    color: white;
}

.stat-icon.total {
    background-color: var(--primary);
}

.stat-icon.pending {
    background-color: var(--warning);
}

.stat-icon.responded {
    background-color: var(--success);
}

.stat-info h3 {
    font-size: 1.8rem;
    margin-bottom: 0.25rem;
}

.stat-info p {
    color: var(--gray);
    font-size: 0.9rem;
}

/* Messages List */
.mensajes-list {
    padding: 0 1.5rem 1.5rem;
}

.mensaje-card {
    background-color: white;
    border-left: 4px solid var(--primary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.mensaje-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.mensaje-card.respondido {
    border-left-color: var(--success);
}

.mensaje-card.no-respondido {
    border-left-color: var(--warning);
}

.mensaje-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.mensaje-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.mensaje-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray);
}

.mensaje-tipo {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    background-color: var(--gray-light);
}

.mensaje-tipo.Consulta {
    background-color: #e3f2fd;
    color: #1976d2;
}

.mensaje-tipo.Sugerencia {
    background-color: #f3e5f5;
    color: #7b1fa2;
}

.mensaje-tipo.Reclamo {
    background-color: #ffebee;
    color: #d32f2f;
}

.mensaje-tipo.Felicitación {
    background-color: #e8f5e9;
    color: #388e3c;
}

.mensaje-content {
    margin-bottom: 1rem;
    line-height: 1.6;
}

.mensaje-actions {
    display: flex;
    gap: 0.5rem;
}

/* Upload Form */
.upload-card {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-light);
}

.upload-card h3 {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark);
}

.upload-form {
    background-color: var(--light);
    padding: 1.5rem;
    border-radius: var(--border-radius);
}

/* Gallery Management */
.gallery-management {
    padding: 1.5rem;
}

.gallery-management h3 {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark);
}

/* Comprobantes Styles */
.comprobantes-list {
    margin-top: 1.5rem;
    display: grid;
    gap: 1.5rem;
    padding: 1.5rem;
}

.comprobante-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    border-left: 5px solid var(--primary);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.comprobante-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.comprobante-card.recibido {
    border-left-color: var(--success);
}

.comprobante-card.recibido::before {
    background: linear-gradient(90deg, var(--success), var(--primary));
}

.comprobante-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.comprobante-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.comprobante-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.comprobante-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

/* Utilities */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mb-3 {
    margin-bottom: 1rem;
}

/* Mensajes de feedback */
.message {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
    font-weight: 500;
}

.message.success {
    background-color: #e8f5e9;
    color: #2e7d32;
    border-left: 4px solid #2e7d32;
}

.message.error {
    background-color: #ffebee;
    color: #d32f2f;
    border-left: 4px solid #d32f2f;
}

.message.warning {
    background-color: #fff8e1;
    color: #f57c00;
    border-left: 4px solid #f57c00;
}

/* Animation */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Responsive Design */
@media (max-width: 992px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .section-actions {
        width: 100%;
        flex-direction: column;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .filters {
        width: 100%;
    }
    
    .filters select {
        flex: 1;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .admin-nav {
        flex-direction: column;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
    
    .mensaje-header {
        flex-direction: column;
    }
    
    .mensaje-actions {
        width: 100%;
        justify-content: center;
    }
    
    .modal-actions {
        flex-direction: column;
    }
}

@media (max-width: 576px) {
    .admin-panel {
        padding: 1rem;
    }
    
    .section-header, 
    .stats-cards,
    .mensajes-list,
    .upload-card,
    .gallery-management {
        padding: 1rem;
    }
    
    .modal-header,
    .mensaje-detalles,
    .modal-actions {
        padding: 1rem;
    }
}