body {
    background-color: #f8f9fa;
    color: #212529;
    font-family: 'Roboto', sans-serif;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    background-color: #212529;
    color: #f8f9fa;
}

.container {
    padding: 20px;
}

.btn-dark-mode-toggle {
    background-color: #6c757d;
    color: #ffffff;
    border: none;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode .btn-dark-mode-toggle {
    background-color: #495057;
    color: #f8f9fa;
}

.network-container, .card {
    background-color: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 0.25rem;
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    padding: 15px;
    transition: background-color 0.3s, border-color 0.3s;
}

body.dark-mode .network-container, body.dark-mode .card {
    background-color: #343a40;
    border-color: #495057;
}

.nav-tabs .nav-link {
    color: #6c757d;
    background-color: #e9ecef;
    border: 1px solid #dee2e6;
    transition: background-color 0.3s, color 0.3s;
}

.nav-tabs .nav-link.active {
    color: #ffffff;
    background-color: #007bff;
}

body.dark-mode .nav-tabs .nav-link {
    color: #ccc;
    background-color: #343a40;
}

body.dark-mode .nav-tabs .nav-link.active {
    background-color: #495057;
}

.site-box, .control-channels-container, .repeater-box, .card-header {
    background-color: #e9ecef;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    margin-bottom: 10px;
    padding: 15px;
    transition: background-color 0.3s, border-color 0.3s;
}

body.dark-mode .site-box, body.dark-mode .control-channels-container, body.dark-mode .repeater-box, body.dark-mode .card-header {
    background-color: #495057;
    border-color: #6c757d;
}

.voice-channel {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 0.25rem;
    margin-bottom: 10px;
    padding: 15px;
    transition: background-color 0.3s, border-color 0.3s;
}

body.dark-mode .voice-channel {
    background-color: #c82333;
    border-color: #bd2130;
}

.voice-channel.keyed {
    background-color: #d4edda;
    border-color: #c3e6cb;
}

body.dark-mode .voice-channel.keyed {
    background-color: #28a745;
    border-color: #218838;
}

.tab-pane {
    padding: 15px;
    border: 1px solid #dee2e6;
    background-color: #ffffff;
    transition: background-color 0.3s, border-color 0.3s;
}

body.dark-mode .tab-pane {
    background-color: #343a40;
    border-color: #495057;
}

.voice-channels {
    margin-top: 10px;
    max-height: 150px;
    overflow-y: auto;
}

.voice-channel:hover {
    background-color: #f5c2c7;
}

body.dark-mode .voice-channel:hover {
    background-color: #a71d2a;
}

h2, h3, h5 {
    margin-bottom: 15px;
}

.card-body {
    padding: 0;
}

.navbar {
    border-bottom: 1px solid #dee2e6;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

body.dark-mode .navbar {
    background-color: #343a40;
    color: #f8f9fa;
    border-color: #495057;
}

body.dark-mode .navbar-light .navbar-brand {
    color: #f8f9fa;
}

body.dark-mode .navbar-light .navbar-nav .nav-link {
    color: #f8f9fa;
}

body.dark-mode .navbar-light .navbar-toggler {
    color: #f8f9fa;
    border-color: #495057;
}

body.dark-mode .navbar-light .navbar-toggler-icon {
    background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='%23f8f9fa' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

body.dark-mode .table td, body.dark-mode .table th {
    color: #f8f9fa;
}

.modal-content {
    background-color: #ffffff;
    color: #212529;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode .modal-content {
    background-color: #343a40;
    color: #f8f9fa;
}

body.dark-mode .form-control {
    background-color: #495057;
    color: #f8f9fa;
    border: 1px solid #6c757d;
}

.site-card {
    background-color: #ffffff;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.site-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

body.dark-mode .site-card {
    background-color: #343a40;
    border-color: #495057;
    color: #f8f9fa;
}

@media (max-width: 768px) {
    .site-card {
        font-size: 0.85rem;
    }

    .voice-channel {
        font-size: 0.75rem;
    }
}