:root {
  --bg-main: #020617;
  --bg-panel: #020617;
  --bg-panel-alt: #0f172a;
  --bg-sidebar: #020617;
  --border-subtle: #1f2937;
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --danger: #f97373;
  --radius-lg: 14px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #1d1b3a 0, #020617 40%, #020617 100%);
  color: var(--text-main);
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Sidebar */

.sidebar {
  width: 260px;
  background: rgba(2, 6, 23, 0.98);
  border-right: 1px solid var(--border-subtle);
  padding: 18px 16px;
  position: sticky;
  top: 0;
  align-self: flex-start;
  max-height: 100vh;
  overflow-y: auto;
}

.sidebar-header {
  margin-bottom: 18px;
}

.sidebar-logo {
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 12px;
  text-transform: uppercase;
  color: var(--accent);
}

.sidebar-product {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 3px;
}

.sidebar-group {
  margin-bottom: 8px;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(31, 41, 55, 0.9);
}

.sidebar-group-toggle {
  width: 100%;
  text-align: left;
  border: none;
  background: transparent;
  padding: 8px 10px;
  color: var(--text-main);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.sidebar-group-toggle span {
  font-weight: 500;
}

.sidebar-group-toggle small {
  font-size: 11px;
  color: var(--text-muted);
}

.sidebar-group-chevron {
  font-size: 11px;
  margin-left: 8px;
}

.sidebar-group-content {
  display: none;
  padding: 4px 8px 8px;
}

.sidebar-group[data-open="true"] .sidebar-group-content {
  display: block;
}

.sidebar-group[data-open="true"] .sidebar-group-toggle {
  background: rgba(15, 23, 42, 0.96);
}

.sidebar-group[data-open="true"] {
  border-color: var(--accent-soft);
}

.nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav-item {
  margin-bottom: 2px;
}

.nav-link {
  display: block;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.nav-link:hover {
  background: #020617;
  color: var(--text-main);
}

/* Main content */

.main-area {
  flex: 1;
  min-width: 0;
  padding: 18px 20px;
}

.page-header {
  margin-bottom: 16px;
}

.page-title {
  margin: 0 0 4px;
  font-size: 20px;
}

.page-subtitle {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
}

.card {
  background: rgba(15, 23, 42, 0.96);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 14px 16px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
}

.card-text {
  font-size: 13px;
  color: var(--text-muted);
}

/* Simple table */

.simple-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  margin-top: 8px;
}

.simple-table th,
.simple-table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.simple-table th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 500;
}

/* Badges */

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border-subtle);
  font-size: 11px;
  color: var(--text-muted);
}

/* Login page */

.login-root {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 360px;
  max-width: 100%;
  padding: 22px 22px 18px;
  border-radius: 20px;
  border: 1px solid var(--border-subtle);
  background:
    radial-gradient(circle at top left, rgba(56,189,248,0.16), transparent 60%),
    rgba(15, 23, 42, 0.98);
}

.login-title {
  font-size: 20px;
  margin-bottom: 4px;
}

.login-sub {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}

.form-label {
  font-size: 12px;
  color: var(--text-muted);
}

.form-input {
  border-radius: 9px;
  border: 1px solid var(--border-subtle);
  background: #020617;
  padding: 8px 10px;
  font-size: 13px;
  color: var(--text-main);
}

.btn-row {
  margin-top: 10px;
  display: flex;
  gap: 8px;
}

.btn {
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
}

.btn-primary {
  background: var(--accent);
  color: #020617;
}

.btn-outline {
  border-color: var(--border-subtle);
  background: transparent;
  color: var(--text-main);
}

/* Responsive */

@media (max-width: 900px) {
  .layout-root {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    max-height: none;
    position: static;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
  .main-area {
    padding: 16px;
  }
}