:root {
  --bg: #0b0b0b;
  --surface: #161616;
  --surface-2: #1e1e1e;
  --border: #2b2b2b;
  --text: #f5f5f5;
  --text-dim: #a8a8a8;
  --text-faint: #6e6e6e;
  --accent: #d19dda;
  --accent-dark: #b578c0;
  --danger: #e06666;
  --warning: #e0b866;
  --success: #7fd99a;
  --radius: 10px;
  --radius-sm: 6px;
  font-size: 15px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

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

.sidebar {
  width: 230px;
  flex-shrink: 0;
  background: #0f0f0f;
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sidebar .brand {
  font-size: 20px;
  font-weight: 800;
  font-style: italic;
  color: var(--text);
  margin-bottom: 4px;
  padding: 0 10px;
}
.sidebar .brand span { color: var(--accent); }
.sidebar .tagline {
  font-size: 11px;
  color: var(--text-faint);
  padding: 0 10px;
  margin-bottom: 24px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
}
.nav-link:hover { background: var(--surface); color: var(--text); text-decoration: none; }
.nav-link.active { background: var(--surface); color: var(--text); border-left: 2px solid var(--accent); }

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-faint);
}

.main {
  flex: 1;
  padding: 32px 40px;
  max-width: 1200px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.page-header h1 { font-size: 24px; margin: 0; font-weight: 700; }
.page-header p.subtitle { margin: 4px 0 0; color: var(--text-dim); font-size: 13px; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #1a0e1c; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-danger { border-color: var(--danger); color: var(--danger); background: transparent; }
.btn-danger:hover { background: rgba(224,102,102,0.1); }
.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.stat-card .value { font-size: 26px; font-weight: 800; color: var(--accent); }
.stat-card .label { font-size: 12px; color: var(--text-dim); margin-top: 4px; }

.client-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.client-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.client-card .top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.client-card .name { font-weight: 700; font-size: 15px; }
.client-card .url { font-size: 12px; color: var(--text-faint); word-break: break-all; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  white-space: nowrap;
}
.badge-dot { width: 6px; height: 6px; border-radius: 50%; }
.badge-up { background: rgba(127,217,154,0.12); color: var(--success); }
.badge-up .badge-dot { background: var(--success); }
.badge-down { background: rgba(224,102,102,0.12); color: var(--danger); }
.badge-down .badge-dot { background: var(--danger); }
.badge-unknown { background: rgba(168,168,168,0.12); color: var(--text-dim); }
.badge-unknown .badge-dot { background: var(--text-dim); }
.badge-muted { background: rgba(168,168,168,0.1); color: var(--text-faint); }

.client-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
}
.client-meta .item { display: flex; align-items: center; gap: 5px; }

.client-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border-top: 1px solid var(--border);
  padding-top: 12px;
  margin-top: 2px;
}

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
table.data-table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
table.data-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tr:hover td { background: var(--surface-2); }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-grid.single { grid-template-columns: 1fr; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group.span-2 { grid-column: 1 / -1; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--text-dim); }
.form-group .hint { font-size: 11px; color: var(--text-faint); }

input[type=text], input[type=email], input[type=password], input[type=url], input[type=number], select, textarea {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
}
label.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text);
  font-weight: 400;
}

.section-title {
  font-size: 14px;
  font-weight: 700;
  margin: 28px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.section-title:first-child { margin-top: 0; }

.flash-stack { display: flex; flex-direction: column; gap: 10px; margin-bottom: 20px; }
.flash {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  border: 1px solid var(--border);
}
.flash-success { border-color: rgba(127,217,154,0.4); background: rgba(127,217,154,0.08); color: var(--success); }
.flash-error { border-color: rgba(224,102,102,0.4); background: rgba(224,102,102,0.08); color: var(--danger); }
.flash-info { border-color: rgba(209,157,218,0.4); background: rgba(209,157,218,0.08); color: var(--accent); }

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-faint);
}
.empty-state h3 { color: var(--text-dim); font-size: 16px; margin-bottom: 8px; }

.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}
.login-box {
  width: 100%;
  max-width: 380px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.login-box .brand {
  font-size: 24px;
  font-weight: 800;
  font-style: italic;
  margin-bottom: 4px;
  text-align: center;
}
.login-box .brand span { color: var(--accent); }
.login-box .subtitle {
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  margin-bottom: 28px;
}
.login-box form { display: flex; flex-direction: column; gap: 14px; }

.code-box {
  background: #0f0f0f;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  color: var(--accent);
  word-break: break-all;
  user-select: all;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--surface-2);
  border-radius: 100px;
  overflow: hidden;
}
.progress-bar .fill { height: 100%; background: var(--accent); }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 24px; }
.tab { padding: 10px 16px; font-size: 13px; font-weight: 600; color: var(--text-dim); border-bottom: 2px solid transparent; cursor: pointer; }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }

.muted { color: var(--text-faint); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }

@media (max-width: 860px) {
  .app { flex-direction: column; }
  .sidebar { width: 100%; flex-direction: row; overflow-x: auto; padding: 12px; align-items: center; }
  .sidebar .brand, .sidebar .tagline, .sidebar-footer { display: none; }
  .main { padding: 20px; }
  .form-grid { grid-template-columns: 1fr; }
}