:root {
    --primary-color: #2c82c9;
    --secondary-color: #5a9bd5;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-color: #dee2e6;
    --border-radius: 4px;
    --box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: #f5f7fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

h1, h2 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

/* Form styling */
.gateway-form {
    background-color: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

input[type="text"], 
input[type="password"], 
input[type="email"], 
input[type="number"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
}

.btn {
    display: inline-block;
    padding: 10px 15px;
    border: none;
    border-radius: var(--border-radius);
    background-color: var(--light-color);
    color: var(--dark-color);
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s;
}

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

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

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

.btn.warning {
    background-color: var(--warning-color);
    color: var(--dark-color);
}

.btn:hover {
    opacity: 0.9;
}

/* Gateway List */
.gateway-list {
    background-color: white;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.filter-options {
    display: flex;
    gap: 15px;
}

.filter-options label {
    display: flex;
    align-items: center;
    gap: 5px;
    font-weight: normal;
}

.gateway-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.gateway-card {
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 15px;
    position: relative;
}

.gateway-card.online {
    border-left: 5px solid var(--success-color);
}

.gateway-card.offline {
    border-left: 5px solid var(--danger-color);
}

.gateway-card.paused {
    border-left: 5px solid var(--warning-color);
}

.gateway-card.deleted {
    border-left: 5px solid #888;
    opacity: 0.8;
}

.gateway-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.gateway-id {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
}

.gateway-status {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 15px;
}

.gateway-status.online {
    background-color: rgba(40, 167, 69, 0.2);
    color: var(--success-color);
}

.gateway-status.offline {
    background-color: rgba(220, 53, 69, 0.2);
    color: var(--danger-color);
}

.gateway-status.paused {
    background-color: rgba(255, 193, 7, 0.2);
    color: #856404;
}

.gateway-status.deleted {
    background-color: rgba(136, 136, 136, 0.2);
    color: #555;
}

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

.gateway-actions .btn {
    padding: 5px 10px;
    font-size: 14px;
    flex: 1;
    text-align: center;
}

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

.modal-content {
    background-color: white;
    margin: 10% auto;
    padding: 20px;
    border-radius: var(--border-radius);
    width: 80%;
    max-width: 600px;
    position: relative;
}

.close {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.loading {
    text-align: center;
    padding: 20px;
    color: #666;
}

/* Details view */
.details-section {
    margin-bottom: 20px;
}

.details-row {
    display: flex;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.details-label {
    font-weight: 500;
    width: 40%;
}

.details-value {
    width: 60%;
}

.action-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.action-buttons .btn {
    flex: 1;
}

/* Edit name button styles */
.btn.small {
    padding: 3px 8px;
    font-size: 12px;
    margin-left: 8px;
}

.edit-icon {
    display: inline-block;
    font-size: 14px;
}

#edit-name-input {
    width: 70%;
    margin-right: 5px;
}

/* Debug section */
.debug-section {
    margin-top: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
}

.debug-section h3 {
    margin-top: 0;
    font-size: 16px;
    color: #666;
}

/* Responsiveness */
@media (max-width: 768px) {
    .gateway-grid {
        grid-template-columns: 1fr;
    }

    .filter-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .modal-content {
        width: 95%;
        margin: 5% auto;
    }
}

/* Navigation */
.main-nav {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.nav-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1rem;
    color: var(--text-color);
    border-radius: 4px;
    transition: all 0.2s ease;
}

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

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

/* Management Sections */
.management-section {
    display: none;
}

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

/* Customer Management */
.customer-form {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: var(--card-shadow);
}

.customer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.customer-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    position: relative;
}

.customer-card.inactive {
    opacity: 0.7;
}

.customer-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.customer-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.customer-hierarchy {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.customer-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.customer-stat {
    font-size: 0.9rem;
}

.customer-stat-label {
    color: var(--text-secondary);
}

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

/* Device Management */
.device-form {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: var(--card-shadow);
}

.device-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.device-card {
    background-color: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    position: relative;
}

.device-card.inactive {
    opacity: 0.7;
}

.device-title {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.device-info {
    margin-bottom: 1rem;
}

.device-info-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.device-info-label {
    color: var(--text-secondary);
}

.device-status {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.device-status.online {
    background-color: var(--success-color);
    color: white;
}

.device-status.offline {
    background-color: var(--danger-color);
    color: white;
}

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

/* Form Improvements */
textarea {
    width: 100%;
    min-height: 100px;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: inherit;
    resize: vertical;
}

select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: white;
    font-family: inherit;
}

/* Modal Improvements */
.modal-content {
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}