/* nmonitor - Network Monitor Dark Theme */
:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2130;
    --bg-input: #252838;
    --bg-hover: #2a2d3d;
    --text-primary: #e4e6ef;
    --text-secondary: #8b8fa3;
    --text-muted: #5c5f73;
    --border: #2e3144;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-dim: rgba(59,130,246,0.15);
    --success: #22c55e;
    --success-dim: rgba(34,197,94,0.15);
    --danger: #ef4444;
    --danger-dim: rgba(239,68,68,0.15);
    --warning: #f59e0b;
    --warning-dim: rgba(245,158,11,0.15);
    --sidebar-w: 220px;
    --radius: 8px;
    --radius-sm: 4px;
}

[data-theme="light"] {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f0f0f3;
    --bg-hover: #e8e8eb;
    --text-primary: #1a1a2e;
    --text-secondary: #6b6b80;
    --text-muted: #9b9baf;
    --border: #dcdce0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-brand {
    padding: 20px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-brand svg {
    width: 24px;
    height: 24px;
    fill: var(--accent);
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
    overflow-y: auto;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.15s;
    text-decoration: none;
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    text-decoration: none;
}

.sidebar-nav a.active {
    color: var(--accent);
    background: var(--accent-dim);
    border-left-color: var(--accent);
}

.sidebar-nav a svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-nav .nav-section {
    padding: 16px 16px 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    font-size: 13px;
}

.sidebar-footer .user-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}

.sidebar-footer .username {
    color: var(--text-primary);
    font-weight: 500;
}

.sidebar-footer .role-badge {
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.role-admin { background: var(--accent-dim); color: var(--accent); }
.role-operator { background: var(--warning-dim); color: var(--warning); }
.role-viewer { background: var(--success-dim); color: var(--success); }

.sidebar-footer .sidebar-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-w);
    padding: 24px;
    min-width: 0;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 600;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.card-header h2, .card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

/* Summary cards (dashboard) */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.summary-card .count {
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
}

.summary-card .label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
}

.count-up { color: var(--success); }
.count-down { color: var(--danger); }
.count-warn { color: var(--warning); }
.count-info { color: var(--accent); }

/* Grid layouts */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* Host status grid */
.host-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
}

.host-tile {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px;
    text-align: center;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}

.host-tile:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
}

.host-tile .ip {
    font-weight: 600;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 12px;
}

.host-tile .hostname {
    color: var(--text-secondary);
    font-size: 11px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.host-tile.status-up { border-left: 3px solid var(--success); }
.host-tile.status-down { border-left: 3px solid var(--danger); }
.host-tile.status-unknown { border-left: 3px solid var(--text-muted); }

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead th {
    text-align: left;
    padding: 10px 12px;
    border-bottom: 2px solid var(--border);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

tbody tr:hover {
    background: var(--bg-hover);
}

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

/* Status badges */
.badge {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-up, .badge-success { background: var(--success-dim); color: var(--success); }
.badge-down, .badge-danger { background: var(--danger-dim); color: var(--danger); }
.badge-warning { background: var(--warning-dim); color: var(--warning); }
.badge-info { background: var(--accent-dim); color: var(--accent); }
.badge-muted { background: var(--bg-input); color: var(--text-muted); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.btn:hover { background: var(--bg-hover); text-decoration: none; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); }

.btn-danger {
    background: var(--danger-dim);
    border-color: var(--danger);
    color: var(--danger);
}
.btn-danger:hover { background: var(--danger); color: #fff; }

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

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

.btn-group {
    display: inline-flex;
    gap: 4px;
}

/* Forms */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.15s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

select.form-control {
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

.form-inline {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

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

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
}

/* Alerts / Messages */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-danger { background: var(--danger-dim); color: var(--danger); border: 1px solid var(--danger); }
.alert-success { background: var(--success-dim); color: var(--success); border: 1px solid var(--success); }
.alert-warning { background: var(--warning-dim); color: var(--warning); border: 1px solid var(--warning); }
.alert-info { background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent); }

/* Login page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--accent);
}

.login-box .subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 24px;
}

.login-tabs {
    display: flex;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border);
}

.login-tabs button {
    flex: 1;
    padding: 10px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.15s;
}

.login-tabs button.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    width: 90%;
    max-width: 560px;
    max-height: 80vh;
    overflow-y: auto;
    transform: translateY(10px);
    transition: transform 0.2s;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

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

.modal-header h3 { font-size: 18px; }

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 24px;
    padding: 0;
    line-height: 1;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* Progress bar */
.progress-bar {
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar .fill {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s;
}

/* Loading spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 40px;
    color: var(--text-secondary);
}

/* Alerts list */
.alerts-list {
    max-height: 300px;
    overflow-y: auto;
}

.alert-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}

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

.alert-item .alert-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.alert-item .alert-dot.unread { background: var(--danger); }
.alert-item .alert-dot.read { background: var(--text-muted); }

.alert-item .alert-time {
    color: var(--text-muted);
    font-size: 11px;
    white-space: nowrap;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid var(--border);
    margin-bottom: 20px;
    gap: 0;
}

.tabs button {
    padding: 10px 20px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
}

.tabs button.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

.tabs button:hover {
    color: var(--text-primary);
}

/* Charts */
.chart-container {
    position: relative;
    width: 100%;
    height: 200px;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state svg {
    width: 48px;
    height: 48px;
    fill: var(--text-muted);
    margin-bottom: 12px;
}

.empty-state p {
    margin-bottom: 16px;
}

/* Utility */
.text-right { text-align: right; }
.text-center { text-align: center; }
.text-muted { color: var(--text-secondary); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mono { font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.hidden { display: none !important; }

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding: 16px;
        padding-top: 56px;
    }
    .mobile-menu-btn {
        display: block;
    }
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    .form-inline {
        flex-direction: column;
    }
    .summary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Scan presets */
.scan-presets {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.scan-presets .btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* Toggle switch */
.toggle {
    position: relative;
    width: 36px;
    height: 20px;
    display: inline-block;
}

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

.toggle .slider {
    position: absolute;
    inset: 0;
    background: var(--bg-input);
    border-radius: 10px;
    cursor: pointer;
    transition: 0.2s;
    border: 1px solid var(--border);
}

.toggle .slider::before {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    left: 2px;
    bottom: 2px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: 0.2s;
}

.toggle input:checked + .slider {
    background: var(--accent);
    border-color: var(--accent);
}

.toggle input:checked + .slider::before {
    transform: translateX(16px);
    background: #fff;
}

/* Port state colors */
.port-open { color: var(--success); }
.port-closed { color: var(--danger); }
.port-filtered { color: var(--warning); }

/* Tooltip */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 8px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    white-space: nowrap;
    z-index: 10;
}

/* Event severity row backgrounds */
.severity-critical {
    background: var(--danger-dim) !important;
}
.severity-warning {
    background: var(--warning-dim) !important;
}

/* Acknowledged event dimming */
.event-ack {
    opacity: 0.5;
}
.event-ack:hover {
    opacity: 0.75;
}