:root {
  --color-primary: #0075de;
  --color-primary-active: #005bab;
  --color-secondary: #213183;
  --color-on-primary: #ffffff;
  --color-canvas: #ffffff;
  --color-canvas-soft: #f6f5f4;
  --color-surface: #ffffff;
  --color-ink: #000000;
  --color-ink-secondary: #31302e;
  --color-ink-muted: #615d59;
  --color-ink-faint: #a39e98;
  --color-hairline: #e6e6e6;
  --rounded-xs: 4px;
  --rounded-sm: 5px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-full: 9999px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 28px;
  --spacing-xxl: 32px;
  --shadow-soft: 0 0.175px 1.041px rgba(0,0,0,0.01), 0 0.8px 2.925px rgba(0,0,0,0.02);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Inter, -apple-system, system-ui, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 15px;
  line-height: 1.33;
  color: var(--color-ink);
  background: var(--color-canvas-soft);
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-active); }

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

.sidebar {
  width: 240px;
  background: var(--color-canvas);
  border-right: 1px solid var(--color-hairline);
  padding: var(--spacing-md);
  flex-shrink: 0;
}

.sidebar-brand {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.125px;
}

.nav-row {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--rounded-sm);
  color: var(--color-ink);
  margin-bottom: 4px;
}

.nav-row.active {
  background: rgba(0, 117, 222, 0.08);
  border-left: 3px solid var(--color-primary);
  padding-left: calc(var(--spacing-md) - 3px);
  font-weight: 500;
}

.main {
  flex: 1;
  padding: var(--spacing-lg);
  max-width: 1200px;
}

.page-header {
  margin-bottom: var(--spacing-lg);
}

.page-header h1 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.625px;
  margin: 0 0 var(--spacing-xs);
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.btn-primary {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-on-primary);
  border: none;
  border-radius: var(--rounded-full);
  padding: 8px 18px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}

.btn-primary:hover { background: var(--color-primary-active); color: #fff; }

.btn-secondary {
  display: inline-block;
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-hairline);
  border-radius: var(--rounded-md);
  padding: 6px 14px;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border-radius: var(--rounded-lg);
  overflow: hidden;
  border: 1px solid var(--color-hairline);
}

.data-table th {
  background: var(--color-canvas-soft);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.125px;
  text-align: left;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-hairline);
}

.data-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-hairline);
  font-size: 15px;
  vertical-align: top;
}

.badge-hot {
  background: #dd5b00;
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--rounded-full);
}

.text-input {
  width: 100%;
  padding: 6px;
  border: 1px solid #ddd;
  border-radius: var(--rounded-xs);
  font-size: 15px;
  margin-bottom: var(--spacing-sm);
}

.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-canvas-soft);
}

.auth-card {
  background: var(--color-surface);
  border-radius: var(--rounded-xl);
  padding: var(--spacing-lg);
  width: 100%;
  max-width: 400px;
  border: 1px solid var(--color-hairline);
  box-shadow: var(--shadow-soft);
}

.error { color: #dd5b00; margin-bottom: var(--spacing-sm); }

.toolbar {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
  align-items: center;
}

.footer-note {
  margin-top: var(--spacing-xxl);
  font-size: 14px;
  color: var(--color-ink-muted);
}

@media (max-width: 768px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--color-hairline); }
}