:root {
    --bg: #0f0f1a;
    --surface: #1a1a2e;
    --surface-light: #252540;
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --danger: #dc2626;
    --danger-hover: #b91d1d;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --border: #334155;
    --success: #22c55e;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--bg) 0%, #1e1b4b 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
}

.login-box {
    background: var(--surface);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3);
    text-align: center;
}

.login-box h1 {
    font-size: 2rem;
    margin-bottom: 8px;
    color: var(--primary);
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

input, select, textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
    resize: vertical;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

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

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

.btn-small { padding: 6px 12px; font-size: 0.75rem; }

.btn-block { width: 100%; }

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.875rem;
}

.alert-error {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid var(--danger);
    color: #fca5a5;
}

.alert-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    color: #86efac;
}

.login-info {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.login-info code {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary);
}

.app {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.sidebar nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar nav a {
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s;
}

.sidebar nav a:hover, .sidebar nav a.active {
    background: var(--surface-light);
    color: var(--text);
}

.sidebar .user {
    padding-top: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar .user span {
    font-size: 0.875rem;
    color: var(--text);
}

.content {
    flex: 1;
    padding: 32px;
    overflow-y: auto;
}

.content h1 {
    font-size: 1.875rem;
    margin-bottom: 8px;
}

.uuid {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 24px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--surface);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.search-form {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    max-width: 600px;
    flex-wrap: wrap;
}

.search-form input {
    flex: 1;
    min-width: 200px;
}

.table-container {
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
}

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

th, td {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.875rem;
}

th {
    background: var(--surface-light);
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

tr:not(:last-child) td {
    border-bottom: 1px solid var(--border);
}

.panel-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.panel {
    background: var(--surface);
    padding: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.panel h2 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text);
}

.panel form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.panel label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: -6px;
}

code {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.85em;
}

@media (max-width: 768px) {
    .app { flex-direction: column; }
    .sidebar { width: 100%; }
    .panel-grid { grid-template-columns: 1fr; }
}