:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --bg: #0f172a;
  --bg-card: #1e293b;
  --bg-sidebar: #0f172a;
  --bg-input: #334155;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dark: #64748b;
  --border: #334155;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-lg: 0 4px 20px rgba(0,0,0,0.4);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.hidden { display: none !important; }

/* ── Login ── */
#login-screen {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}
.login-box {
  background: var(--bg-card);
  padding: 3rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 400px;
  text-align: center;
}
.login-box .logo { margin-bottom: 2rem; }
.login-box .logo h1 { color: var(--text); font-size: 1.5rem; margin-top: 0.5rem; }
.login-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s;
}
.login-box input:focus { border-color: var(--primary); }
.error-msg { color: var(--danger); font-size: 0.85rem; margin-top: 0.5rem; min-height: 1.2rem; }

/* ── Layout ── */
#main-panel { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}
.sidebar-header {
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.15rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  color: var(--primary-light);
}
.sidebar-nav { flex: 1; padding: 1rem 0; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: all 0.2s;
  font-size: 0.95rem;
}
.nav-item:hover { background: rgba(99,102,241,0.1); color: var(--text); }
.nav-item.active { background: rgba(99,102,241,0.15); color: var(--primary-light); border-right: 3px solid var(--primary); }
.sidebar-footer { padding: 1rem 1.25rem; border-top: 1px solid var(--border); }

.main-content { flex: 1; padding: 2rem; overflow-y: auto; }

/* ── Page ── */
.page { display: none; }
.page.active { display: block; }
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}
.page-header h2 { font-size: 1.5rem; font-weight: 700; }
.subtitle { color: var(--text-muted); font-size: 0.9rem; margin-top: 0.25rem; }

/* ── Stats Grid ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  border: 1px solid var(--border);
}
.stat-card .stat-icon { font-size: 1.5rem; margin-bottom: 0.5rem; }
.stat-card .stat-value { font-size: 1.75rem; font-weight: 700; }
.stat-card .stat-label { color: var(--text-muted); font-size: 0.85rem; }

/* ── Card ── */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}
.card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
}
.card-header h3 { font-size: 1.1rem; }
.card-body { padding: 1.25rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; }
.btn-warning { background: var(--warning); color: #000; }
.btn-warning:hover { background: #d97706; }
.btn-info { background: var(--info); color: #fff; }
.btn-info:hover { background: #2563eb; }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg-input); color: var(--text); }
.btn-sm { padding: 0.35rem 0.75rem; font-size: 0.8rem; }

/* ── Table ── */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}
th {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
td { color: var(--text); }
tr:hover td { background: rgba(99,102,241,0.05); }

/* ── Badges ── */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-active { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-disabled { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-error { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-info { background: rgba(59,130,246,0.15); color: var(--info); }

/* ── Forms ── */
.form-section { margin-bottom: 1.5rem; }
.form-section h4 { margin-bottom: 0.75rem; color: var(--primary-light); font-size: 1rem; }
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; margin-bottom: 0.35rem; font-weight: 500; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--primary); }
.form-group small { color: var(--text-dark); font-size: 0.8rem; margin-top: 0.25rem; display: block; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; }
.form-check { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.5rem; }
.form-check input[type=checkbox] { width: 18px; height: 18px; accent-color: var(--primary); }

/* ── Modal ── */
.modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 4vh;
  z-index: 1000;
  backdrop-filter: blur(4px);
}
.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 600px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.modal-content.large { max-width: 800px; }
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 1.2rem; }
.modal-close { background: none; border: none; color: var(--text-muted); font-size: 1.5rem; cursor: pointer; }
.modal-body { padding: 1.5rem; }
.modal-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 0.75rem; }

/* ── Progress ── */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: 4px;
  overflow: hidden;
}
.progress-bar .fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s;
}
.fill-green { background: var(--success); }
.fill-yellow { background: var(--warning); }
.fill-red { background: var(--danger); }

/* ── Toast ── */
.toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.toast {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 0.75rem 1.25rem;
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--info);
  min-width: 300px;
  animation: slideIn 0.3s ease;
}
.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--danger); }
.toast-warning { border-left-color: var(--warning); }

@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ── Action buttons ── */
.action-btns { display: flex; gap: 0.35rem; flex-wrap: wrap; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-dark); }

/* ── Details/Summary ── */
details { margin-bottom: 0.5rem; }
details summary { cursor: pointer; padding: 0.5rem; background: var(--bg-input); border-radius: var(--radius); }
details[open] summary { background: rgba(99,102,241,0.15); }
pre { margin: 0; overflow: auto; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { width: 60px; }
  .sidebar-header span, .nav-item span { display: none; }
  .nav-item { justify-content: center; padding: 0.75rem; }
  .main-content { padding: 1rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
}

/* ── Domain terminal (xterm.js, local vendored asset) ── */
.modal-content.terminal-modal {
  width: min(96vw, 1400px);
  max-width: 1400px;
  height: min(90vh, 920px);
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.modal-content.terminal-modal .modal-body {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  padding: 0.9rem;
  gap: 0.65rem;
}
.terminal-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.terminal-status {
  margin-left: auto;
  color: var(--text-muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
}
.terminal-status.connected { color: var(--success); }
.terminal-status.error { color: var(--danger); }
.terminal-shell-wrap {
  flex: 1;
  min-height: 360px;
  background: #05070b;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  padding: 0.5rem;
}
.terminal-shell {
  width: 100%;
  height: 100%;
  min-height: 340px;
}
.terminal-hint {
  color: var(--text-dark);
  font-size: 0.78rem;
}
.terminal-hint code { color: var(--text-muted); }
.terminal-transport-warning { color: var(--warning); font-size: 0.78rem; border: 1px solid rgba(234,179,8,.35); border-radius: var(--radius); padding: .45rem .6rem; }
@media (max-width: 768px) {
  .modal-content.terminal-modal { width: 100vw; height: 96vh; max-height: 96vh; border-radius: 0; }
  .terminal-shell-wrap { min-height: 280px; }
  .terminal-status { width: 100%; margin-left: 0; }
}