:root {
    --sidebar-width: 240px;
    --sidebar-bg: #0f1117;
    --main-bg: #151921;
    --card-bg: #1c2030;
    --accent: #4f8cff;
    --accent-hover: #3a73e0;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --text: #e2e8f0;
    --text-muted: #64748b;
    --border: #2a3042;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
}

.sidebar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent);
    padding: 0.5rem;
}

.sidebar .nav-link {
    color: var(--text-muted);
    border-radius: 8px;
    padding: 0.6rem 0.8rem;
    margin-bottom: 2px;
    transition: all 0.2s;
}

.sidebar .nav-link:hover {
    color: var(--text);
    background: rgba(79, 140, 255, 0.1);
}

.sidebar .nav-link.active {
    color: #fff;
    background: var(--accent);
}

/* Main */
.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* Cards */
.card, .panel-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.25rem;
    transition: transform 0.15s;
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.stat-card .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
}

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

.icon-blue { background: rgba(79, 140, 255, 0.15); color: var(--accent); }
.icon-green { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.icon-red { background: rgba(239, 68, 68, 0.15); color: var(--danger); }
.icon-yellow { background: rgba(245, 158, 11, 0.15); color: var(--warning); }

/* Tables */
.table {
    --bs-table-bg: transparent;
    --bs-table-border-color: var(--border);
    color: var(--text);
}

.table thead th {
    border-bottom-color: var(--border);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Buttons */
.btn-accent {
    background: var(--accent);
    color: #fff;
    border: none;
}

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

/* Status badges */
.badge-online { background: rgba(34, 197, 94, 0.15); color: var(--success); }
.badge-offline { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

/* Forms */
.form-control, .form-select {
    background: var(--sidebar-bg);
    border-color: var(--border);
    color: var(--text);
}

.form-control:focus, .form-select:focus {
    background: var(--sidebar-bg);
    border-color: var(--accent);
    color: var(--text);
    box-shadow: 0 0 0 0.2rem rgba(79, 140, 255, 0.2);
}

/* Login page */
.login-container {
    max-width: 400px;
    margin: 100px auto;
}

.login-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
}

.login-card h2 {
    color: var(--accent);
}

/* Code blocks */
.dns-record {
    background: var(--sidebar-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.85rem;
    word-break: break-all;
    position: relative;
}

.dns-record .copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
}

/* Service status list */
.service-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
}

.service-row:last-child {
    border-bottom: none;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 0.5rem;
}

.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.offline { background: var(--danger); box-shadow: 0 0 6px var(--danger); }

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
        padding: 0.5rem !important;
    }
    .sidebar .nav-link span,
    .sidebar-brand span,
    .sidebar hr ~ div { display: none; }
    .main-content { margin-left: 60px; }
}