/* Estilos Responsivos para Gestión de Dispositivos WhatsApp */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: white;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

header p {
    font-size: 1.1em;
    opacity: 0.9;
}

.main-content {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

h2 {
    color: #667eea;
    margin-bottom: 20px;
}

/* Botones */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-success {
    background: #28a745;
    color: white;
    width: 100%;
}

.btn-success:hover {
    background: #218838;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

/* Grid de Dispositivos */
.devices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.device-card {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 20px;
    transition: all 0.3s;
}

.device-card:hover {
    border-color: #667eea;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
    transform: translateY(-3px);
}

.device-card.ready {
    border-color: #28a745;
    background: #f0fff4;
}

.device-card.disconnected {
    border-color: #dc3545;
    background: #fff5f5;
}

.device-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.device-name {
    font-size: 1.2em;
    font-weight: 600;
    color: #333;
}

.device-status {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
}

.status-ready {
    background: #28a745;
    color: white;
}

.status-initializing {
    background: #ffc107;
    color: #333;
}

.status-disconnected {
    background: #dc3545;
    color: white;
}

.device-info {
    margin: 10px 0;
    color: #666;
    font-size: 0.9em;
}

.device-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.device-actions button {
    flex: 1;
    min-width: 100px;
}

/* Formularios */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    overflow: auto;
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 30px;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    position: relative;
    animation: slideDown 0.3s;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
}

.close:hover {
    color: #333;
}

/* QR Code */
.qr-container {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    margin: 20px 0;
}

.qr-container img {
    max-width: 100%;
    border-radius: 10px;
}

.qr-instructions {
    text-align: center;
    color: #666;
    line-height: 1.8;
    margin: 20px 0;
}

/* Resultados */
.result-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
    display: none;
}

.result-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.result-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* Responsive */
@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    .devices-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        align-items: stretch;
    }

    .section-header h2 {
        margin-bottom: 10px;
    }

    .btn {
        width: 100%;
    }

    .device-actions {
        flex-direction: column;
    }

    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 20px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .main-content {
        padding: 20px;
    }

    header h1 {
        font-size: 1.5em;
    }
}