/* Sendera - Sistema automatizado de envío de notificaciones - Estilos Empresariales */

/* Variables CSS para consistencia */
:root {
    --primary-color: #0f172a; /* Azul oscuro profundo para header */
    --secondary-color: #1e293b; /* Azul oscuro secundario */
    --accent-color: #3b82f6; /* Azul brillante para acentos */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #3b82f6;
    --light-bg: #f8fafc;
    --dark-bg: #0f172a;
    --border-color: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 14px;
    font-weight: 400;
    height: 100vh;
    overflow: hidden;
}

.container {
    max-width: 1600px;
    margin: 20px auto;
    background: white;
    height: calc(100vh - 40px);
    box-shadow: var(--shadow-xl);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Header Empresarial */
.header {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); /* Azul oscuro profundo */
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: visible;
    flex-shrink: 0;
    z-index: 100;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 50%, rgba(255,255,255,0.05) 100%);
    pointer-events: none;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 1;
}

.logo i {
    font-size: 2.5rem;
    background: linear-gradient(45deg, #25D366, #128C7E);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.logo-img {
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
    object-fit: contain;
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    margin: 0;
    line-height: 1.2;
}

.logo-slogan {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.9;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.logo-subtitle {
    font-size: 0.7rem;
    opacity: 0.7;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 0.25rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 200;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.user-info span {
    font-size: 0.95rem;
    opacity: 0.95;
}

.user-menu {
    position: relative;
}

.user-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.user-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.user-btn i {
    font-size: 1.25rem;
    color: white;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    min-width: 200px;
    z-index: 9000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: none;
}

.user-dropdown.show {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
}

.user-dropdown a:hover {
    background: var(--light-bg);
    color: var(--accent-color);
}

.user-dropdown .active {
    background: var(--accent-color);
    color: white;
}

.user-dropdown .active:hover {
    background: #2c5aa0;
}

/* Language Selector */
.language-selector {
    position: relative;
}

.language-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    color: white;
    font-size: 0.9rem;
}

.language-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.language-btn i {
    font-size: 1rem;
}

#currentLanguageFlag {
    font-size: 1.2rem;
    line-height: 1;
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    min-width: 180px;
    z-index: 9000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: none;
}

.language-dropdown.show {
    display: block;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-dropdown a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
    font-weight: 500;
}

.language-dropdown a:hover {
    background: var(--light-bg);
    color: var(--accent-color);
}

.language-dropdown .lang-flag {
    font-size: 1.5rem;
    line-height: 1;
}

.language-dropdown a.active {
    background: var(--accent-color);
    color: white;
}

.language-dropdown a.active:hover {
    background: #2c5aa0;
}

/* Navigation Moderna */
.nav-tabs {
    display: flex;
    background: var(--light-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    flex-shrink: 0;
    position: relative;
    z-index: 50;
}

.nav-tabs::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    background: none;
    border: none;
    padding: 1rem 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
    white-space: nowrap;
    position: relative;
}

.tab-btn:hover {
    background: rgba(49, 130, 206, 0.05);
    color: var(--accent-color);
    transform: translateY(-1px);
}

.tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background: white;
    box-shadow: var(--shadow-sm);
}

.tab-btn i {
    font-size: 1.1rem;
    transition: var(--transition);
}

.tab-btn:hover i {
    transform: scale(1.1);
}

/* Main Content */
.main-content {
    padding: 2rem;
    background: white;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
}

/* Tab Content - Solo mostrar el activo */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    background: linear-gradient(135deg, var(--accent-color), #2c5aa0);
    flex-shrink: 0;
}

.stat-info {
    flex: 1;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-info p {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

/* Botones Empresariales */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
    margin-right: 0.75rem;
    margin-bottom: 0.75rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color), #2c5aa0);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

.btn-success {
    background: linear-gradient(135deg, var(--success-color), #2f855a);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

.btn-warning {
    background: linear-gradient(135deg, var(--warning-color), #b7791f);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

.btn-danger {
    background: linear-gradient(135deg, var(--danger-color), #c53030);
    color: white;
    box-shadow: var(--shadow-sm);
}

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

.btn-whatsapp {
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: white;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    padding: 0;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.btn-whatsapp:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* Tablas Empresariales */
.table-container {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 350px);
}

.table-header {
    background: var(--light-bg);
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-header {
    flex-shrink: 0;
}

.table-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.table-wrapper {
    overflow-y: auto;
    overflow-x: auto;
    flex: 1;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: var(--light-bg);
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

tr:hover {
    background: rgba(49, 130, 206, 0.02);
}

/* Formularios Empresariales */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

/* Modales Empresariales - Removido para evitar conflictos con la definición unificada de modales más abajo */

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--danger-color);
}

/* Cards de Integración */
.integrations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.integration-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.integration-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.integration-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.integration-status {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding: 0.75rem;
    border-radius: var(--border-radius);
    background: var(--light-bg);
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--danger-color);
    animation: pulse 2s infinite;
}

.status-indicator.connected {
    background: var(--success-color);
    animation: none;
}

.status-indicator.testing {
    background: var(--warning-color);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        margin: 10px;
        border-radius: var(--border-radius);
    }
    
    .header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .nav-tabs {
        padding: 0 1rem;
    }
    
    .tab-btn {
        padding: 1rem;
        font-size: 0.85rem;
    }
    
    .main-content {
        padding: 1.5rem;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .integrations-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .stat-card {
        padding: 1.5rem;
    }
    
    .integration-card {
        padding: 1.5rem;
    }
}

/* Animaciones adicionales */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

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

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #2c5aa0;
}

/* Estados de carga */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--text-muted);
}

.loading i {
    font-size: 2rem;
    animation: spin 1s linear infinite;
    margin-right: 1rem;
}

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

/* Utilidades */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* Grids con scroll para contenido dinámico */
.listas-grid,
.envios-grid,
.plantillas-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    max-height: calc(100vh - 380px);
    overflow-y: auto;
    padding: 0.5rem;
}

/* Responsividad mejorada */
@media (max-width: 768px) {
    .container {
        margin: 0;
        height: 100vh;
        border-radius: 0;
    }
    
    .header {
        padding: 0.75rem 1rem;
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .nav-tabs {
        padding: 0 1rem;
    }
    
    .tab-btn {
        padding: 1rem 1rem;
        font-size: 0.85rem;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .table-container {
        max-height: calc(100vh - 300px);
    }
    
    .listas-grid,
    .envios-grid,
    .plantillas-grid {
        grid-template-columns: 1fr;
        max-height: calc(100vh - 320px);
    }
}

/* ========================================
   WHATSAPP INSTANCES - Evolution API
   ======================================== */

.instances-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem 0;
    max-height: 500px;
    overflow-y: auto;
}

.whatsapp-instance-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.instance-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.instance-info h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.instance-status {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    color: white;
}

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

.instance-details {
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.instance-details p {
    margin: 0.5rem 0;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
}

.empty-state i {
    display: block;
    margin-bottom: 1rem;
}

.empty-state p {
    margin: 1rem 0;
    font-size: 1.1rem;
}

/* QR Code Styles */
#qr-code-container {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
}

#qr-code-container img {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
}

.qr-instructions {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
}

.qr-instructions h4 {
    margin-top: 0;
    color: var(--accent-color);
}

.qr-instructions ol {
    line-height: 1.8;
}

.pairing-code {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #FFF3CD;
    border: 1px solid #FFE69C;
    border-radius: var(--border-radius);
}

.pairing-code code {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: bold;
    color: #856404;
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    margin-top: 0.5rem;
}

/* Modal Actions */
.modal-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.required {
    color: var(--danger-color);
    font-weight: bold;
}

.help-text {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ========================================
   MODAL STYLES - SISTEMA COMPLETO
   ======================================== */

/* Modal Overlay */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex !important;
    align-items: center;
    justify-content: center;
}

/* Modal Content */
.modal-content {
    background-color: #fff;
    margin: auto;
    padding: 0;
    border: none;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
    animation: slideInDown 0.3s ease;
}

.modal-content.large-modal {
    max-width: 900px;
}

/* Modal Header */
.modal-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem 2rem;
    border-top-left-radius: var(--border-radius-lg);
    border-top-right-radius: var(--border-radius-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2,
.modal-header h3 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
}

/* Modal Close Button */
.modal-close,
.close {
    color: white;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
    background: transparent;
    border: none;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover,
.close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* Modal Body */
.modal-body {
    padding: 2rem;
    max-height: calc(90vh - 200px);
    overflow-y: auto;
}

/* Modal Footer */
.modal-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    background: var(--light-bg);
    border-bottom-left-radius: var(--border-radius-lg);
    border-bottom-right-radius: var(--border-radius-lg);
}

/* Form Groups in Modals */
.modal .form-group {
    margin-bottom: 1.5rem;
}

.modal .form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal .form-group input,
.modal .form-group select,
.modal .form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    transition: var(--transition);
}

.modal .form-group input:focus,
.modal .form-group select:focus,
.modal .form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

/* Animations */
@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsividad para modales */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-width: 100%;
        margin: 1rem;
    }
    
    .modal-header {
        padding: 1rem 1.5rem;
    }
    
    .modal-header h2,
    .modal-header h3 {
        font-size: 1.25rem;
    }
    
    .modal-body {
        padding: 1.5rem;
    }
    
    .modal-footer {
        padding: 1rem 1.5rem;
        flex-direction: column;
    }
    
    .modal-footer .btn {
        width: 100%;
    }
}
/* Switch Toggle para Signup */
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.4s;
    border-radius: 30px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #25D366;
}

input:focus + .slider {
    box-shadow: 0 0 1px #25D366;
}

input:checked + .slider:before {
    transform: translateX(30px);
}

/* ===========================================
   ESTILOS PARA SECCIÓN DE REPORTES
   =========================================== */

/* Panel de filtros */
.filters-panel {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.filters-panel h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

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

/* Secciones de reportes */
.reportes-section {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.reportes-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Grid de resumen */
.reportes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.estados-grid {
    margin-bottom: 1.5rem;
}

.estados-grid h4 {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

.estados-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.estado-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.estado-item .estado-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
}

.estado-badge.completado {
    background: #D1FAE5;
    color: #065F46;
    border-left-color: #10B981;
}

.estado-badge.en-progreso {
    background: #DBEAFE;
    color: #1E40AF;
    border-left-color: #3B82F6;
}

.estado-badge.programado {
    background: #FEF3C7;
    color: #92400E;
    border-left-color: #F59E0B;
}

.estado-badge.cancelado {
    background: #FEE2E2;
    color: #991B1B;
    border-left-color: #EF4444;
}

.respuestas-resumen {
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.respuestas-resumen h4 {
    margin-bottom: 1rem;
    color: var(--text-secondary);
    font-size: 1rem;
}

.respuestas-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.respuestas-stats > div {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.respuestas-stats span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.respuestas-stats strong {
    font-size: 1.25rem;
    color: var(--text-primary);
}

/* Estadísticas avanzadas */
.stats-section {
    margin-bottom: 2rem;
}

.stats-section h4 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stats-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
}

.stat-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.stat-bar {
    height: 8px;
    background: #E2E8F0;
    border-radius: 4px;
    overflow: hidden;
}

.stat-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #3B82F6, #8B5CF6);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.stat-values {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Paginación */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.pagination-controls {
    display: flex;
    gap: 0.5rem;
}

.pagination-controls .btn {
    min-width: auto;
    padding: 0.5rem 1rem;
}

/* Badges para estados en tabla */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    display: inline-block;
}

.badge-info {
    background: #DBEAFE;
    color: #1E40AF;
}

.badge-completado,
.badge-completed {
    background: #D1FAE5;
    color: #065F46;
}

.badge-en-progreso,
.badge-in-progress {
    background: #DBEAFE;
    color: #1E40AF;
}

.badge-programado,
.badge-scheduled {
    background: #FEF3C7;
    color: #92400E;
}

.badge-cancelado,
.badge-cancelled {
    background: #FEE2E2;
    color: #991B1B;
}

/* Botones de acción en tabla */
.btn-icon {
    background: transparent;
    border: none;
    color: var(--accent-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

/* ===========================================
   ESTILOS PARA MODAL DE DETALLE DE ENVÍO
   =========================================== */

.envio-detail-section {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.envio-detail-section:last-child {
    border-bottom: none;
}

.envio-detail-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-item label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.detail-item span {
    color: var(--text-primary);
    font-size: 0.95rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
}

.stats-grid .stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    text-align: center;
}

.stats-grid .stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.stats-grid .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stats-grid .stat-value.success {
    color: #10B981;
}

.stats-grid .stat-value.error {
    color: #EF4444;
}

.respuestas-list {
    margin-top: 1rem;
}

.respuestas-summary {
    display: flex;
    gap: 1.5rem;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.respuestas-table {
    overflow-x: auto;
}

.respuestas-table table {
    width: 100%;
}

.respuestas-table tbody tr.processed {
    background: #F0FDF4;
}

.respuestas-table tbody tr.pending {
    background: #FFFBEB;
}

.mensaje-preview {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.badge-success {
    background: #D1FAE5;
    color: #065F46;
}

.badge-warning {
    background: #FEF3C7;
    color: #92400E;
}

/* Responsive */
@media (max-width: 768px) {
    .filters-grid {
        grid-template-columns: 1fr;
    }
    
    .reportes-grid {
        grid-template-columns: 1fr;
    }
    
    .estados-list {
        grid-template-columns: 1fr;
    }
    
    .pagination-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .respuestas-stats {
        flex-direction: column;
        gap: 1rem;
    }
    
    .detail-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .respuestas-summary {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ===========================================
   SUB-PESTAÑAS DE ENVÍOS
   =========================================== */

.sub-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.sub-tab-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sub-tab-btn:hover {
    color: var(--accent-color);
    background: rgba(49, 130, 206, 0.05);
}

.sub-tab-btn.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
    background: rgba(49, 130, 206, 0.1);
}

.sub-tab-content {
    display: none;
}

.sub-tab-content.active {
    display: block;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

/* ===========================================
   MONITOREO EN TIEMPO REAL
   =========================================== */

.realtime-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.realtime-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.realtime-header h3 {
    margin: 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.realtime-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.status-indicator {
    font-weight: 600;
    font-size: 0.9rem;
    color: #6B7280;
}

/* Switch Toggle */
.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: 0.4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #10B981;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Estadísticas en Tiempo Real */
.realtime-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Actividad en Tiempo Real */
.realtime-activity {
    margin-top: 2rem;
}

.realtime-activity h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.activity-list {
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--light-bg);
}

.activity-empty {
    padding: 3rem;
    text-align: center;
    color: var(--text-muted);
}

.activity-empty i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-item:hover {
    background: white;
}

.activity-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.activity-icon.envio {
    background: #3B82F6;
}

.activity-icon.respuesta {
    background: #8B5CF6;
}

.activity-content {
    flex: 1;
}

.activity-message {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.activity-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.activity-status {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.activity-status.status-en_progreso,
.activity-status.status-programado {
    background: #DBEAFE;
    color: #1E40AF;
}

.activity-status.status-completado,
.activity-status.status-success {
    background: #D1FAE5;
    color: #065F46;
}

.activity-status.status-cancelado,
.activity-status.status-error {
    background: #FEE2E2;
    color: #991B1B;
}

/* ===========================================
   CONFIGURACIÓN DE FRECUENCIA
   =========================================== */

.frequency-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.frequency-container h3 {
    margin-bottom: 2rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.frequency-settings {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.frequency-card {
    background: var(--light-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.frequency-card h4 {
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.frequency-envios-list {
    max-height: 600px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.frequency-envio-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 1rem;
    transition: var(--transition);
}

.frequency-envio-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.frequency-envio-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.frequency-envio-header h5 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1rem;
}

.frequency-envio-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background: var(--light-bg);
    border-radius: 6px;
}

.detail-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

.detail-value {
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
}

.frequency-envio-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

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

@media (max-width: 1024px) {
    .frequency-settings {
        grid-template-columns: 1fr;
    }
    
    .realtime-stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sub-tabs {
        flex-wrap: wrap;
    }
    
    .sub-tab-btn {
        font-size: 0.85rem;
        padding: 0.5rem 1rem;
    }
    
    .realtime-stats-grid {
        grid-template-columns: 1fr;
    }
    
    .frequency-envio-details {
        grid-template-columns: 1fr;
    }
    
    .header-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .header-actions .btn {
        width: 100%;
    }
}