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

:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #242836;
    --border: #2e3345;
    --text: #e1e4ed;
    --text-dim: #8b90a0;
    --accent: #4f8ff7;
    --accent-hover: #3a7ae8;
    --green: #34d399;
    --green-dim: rgba(52, 211, 153, 0.15);
    --red: #f87171;
    --red-dim: rgba(248, 113, 113, 0.15);
    --yellow: #fbbf24;
}

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

.hidden { display: none !important; }

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

.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 48px 40px;
    width: 380px;
    text-align: center;
}

.login-card h1 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.login-card .subtitle {
    color: var(--text-dim);
    font-size: 0.875rem;
    margin-bottom: 32px;
}

.login-card input {
    display: block;
    width: 100%;
    padding: 10px 14px;
    margin-bottom: 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.9rem;
}

.login-card input:focus {
    outline: none;
    border-color: var(--accent);
}

.login-card button {
    width: 100%;
    padding: 10px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    cursor: pointer;
    margin-top: 4px;
}

.login-card button:hover { background: var(--accent-hover); }

.error {
    color: var(--red);
    font-size: 0.85rem;
    margin-top: 12px;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

header h1 { font-size: 1.2rem; }

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.stats {
    display: flex;
    gap: 12px;
}

.stat {
    font-size: 0.85rem;
    padding: 4px 10px;
    border-radius: 4px;
    background: var(--surface2);
}

.stat.online { color: var(--green); background: var(--green-dim); }
.stat.offline { color: var(--red); background: var(--red-dim); }

#user-display {
    color: var(--text-dim);
    font-size: 0.85rem;
}

.btn-sm {
    padding: 6px 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text);
    cursor: pointer;
    font-size: 0.8rem;
}

.btn-sm:hover { background: var(--border); }

.btn-primary {
    padding: 8px 16px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
}

.btn-primary:hover { background: var(--accent-hover); }

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

#search-input {
    flex: 1;
    max-width: 400px;
    padding: 8px 14px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.9rem;
}

#search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-dim);
    cursor: pointer;
}

/* Table */
.table-container {
    padding: 16px 24px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 10px 12px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    user-select: none;
}

th.sortable { cursor: pointer; }
th.sortable:hover { color: var(--accent); }
th.sorted-asc::after { content: " \u25B2"; font-size: 0.6rem; }
th.sorted-desc::after { content: " \u25BC"; font-size: 0.6rem; }

td {
    padding: 10px 12px;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tr:hover td { background: var(--surface); }

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

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

.status-dot.offline {
    background: #555;
}

.col-status { width: 50px; text-align: center; }
.col-actions { width: 160px; }

.connect-btn {
    padding: 4px 10px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    margin-right: 4px;
}

.connect-btn:hover { background: var(--accent-hover); }
.connect-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.edit-btn {
    padding: 4px 10px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-dim);
    cursor: pointer;
    font-size: 0.8rem;
}

.edit-btn:hover { background: var(--surface2); color: var(--text); }

.empty-state {
    text-align: center;
    padding: 48px;
    color: var(--text-dim);
    font-size: 1rem;
}

/* Modal */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    width: 420px;
}

.modal-content h2 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.modal-content label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-dim);
    margin-bottom: 4px;
    margin-top: 12px;
}

.modal-content input,
.modal-content select,
.modal-content textarea {
    width: 100%;
    padding: 8px 12px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    font-size: 0.9rem;
    font-family: inherit;
}

.modal-content input:disabled { opacity: 0.5; }

.modal-actions {
    display: flex;
    gap: 8px;
    margin-top: 20px;
    justify-content: flex-end;
}

/* Responsive */
@media (max-width: 768px) {
    header { flex-direction: column; gap: 8px; }
    .header-right { flex-wrap: wrap; justify-content: center; }
    .toolbar { flex-wrap: wrap; }
    #search-input { max-width: 100%; }
    .table-container { padding: 8px; }
}