:root {
  /* Brand */
  --blue: #0057FF;
  --blue-light: #3D7FFF;
  --blue-dim: rgba(0, 87, 255, 0.10);
  --cyan: #22D3EE;
  --green: #34C759;
  --green-dim: rgba(52, 199, 89, 0.12);
  --red: #FF3B30;
  --red-dim: rgba(255, 59, 48, 0.12);
  --yellow: #FF9F0A;
  --yellow-dim: rgba(255, 159, 10, 0.12);
  --purple: #BF5AF2;

  /* Surfaces */
  --sidebar-bg: #0A0A0B;
  --sidebar-hover: rgba(255,255,255,0.06);
  --sidebar-active: rgba(0,87,255,0.18);
  --bg: #F5F5F7;
  --surface: #FFFFFF;
  --surface-2: #FAFAFA;

  /* Text */
  --text-primary: #1D1D1F;
  --text-secondary: #6E6E73;
  --text-tertiary: #AEAEB2;
  --text-on-dark: #F5F5F7;
  --text-on-dark-secondary: rgba(245,245,247,0.6);

  /* Border */
  --border: #D2D2D7;
  --border-subtle: rgba(0,0,0,0.06);

  /* Radius */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-xl: 24px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.05);

  /* Layout */
  --sidebar-w: 220px;
  --topbar-h: 0px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* ── Layout Shell ── */
.shell { display: flex; height: 100vh; width: 100%; overflow: hidden; }

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow-y: auto;
  overflow-x: hidden;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 16px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.sidebar-logo-mark {
  width: 32px; height: 32px;
  background: var(--blue); border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.sidebar-logo-text { color: var(--text-on-dark); font-size: 14px; font-weight: 600; }
.sidebar-logo-sub { color: var(--text-on-dark-secondary); font-size: 10px; font-weight: 400; }

.sidebar-section { padding: 16px 12px 4px; }
.sidebar-section-label {
  font-size: 10px; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--text-on-dark-secondary);
  padding: 0 4px; margin-bottom: 4px;
}
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: var(--r-sm);
  color: var(--text-on-dark-secondary); font-size: 13px; font-weight: 500;
  cursor: pointer; transition: all 0.15s; margin-bottom: 1px;
  text-decoration: none;
}
.nav-item:hover { background: var(--sidebar-hover); color: var(--text-on-dark); }
.nav-item.active { background: var(--sidebar-active); color: var(--blue-light); }
.nav-item svg { width: 16px; height: 16px; flex-shrink: 0; opacity: 0.7; }
.nav-item.active svg { opacity: 1; }

.sidebar-footer {
  margin-top: auto;
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 12px;
}
.user-row {
  display: flex; align-items: center; gap: 10px; padding: 8px 6px; border-radius: var(--r-sm);
  cursor: pointer;
}
.user-row:hover { background: var(--sidebar-hover); }
.user-avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--blue); display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600; color: #fff; flex-shrink: 0;
}
.user-name { color: var(--text-on-dark); font-size: 12px; font-weight: 500; }
.user-role { color: var(--text-on-dark-secondary); font-size: 10px; }

/* ── Main Content ── */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar {
  height: 56px; min-height: 56px;
  background: var(--surface); border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; gap: 16px;
}
.topbar-left { display: flex; align-items: center; gap: 8px; }
.topbar-breadcrumb { font-size: 12px; color: var(--text-secondary); }
.topbar-title { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-icon-btn {
  width: 32px; height: 32px; border-radius: var(--r-sm);
  background: transparent; border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-secondary); font-size: 14px;
}
.topbar-icon-btn:hover { background: var(--bg); }

.content { flex: 1; overflow-y: auto; padding: 24px; }
.page-header { margin-bottom: 24px; }
.page-label { font-size: 11px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 4px; }
.page-title { font-size: 28px; font-weight: 700; color: var(--text-primary); line-height: 1.2; }
.page-title .noun {
  background: linear-gradient(135deg, var(--blue) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-subtitle { font-size: 14px; color: var(--text-secondary); margin-top: 4px; }

/* ── Components ── */
.card {
  background: var(--surface); border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg); box-shadow: var(--shadow-sm); overflow: hidden;
}
.card-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: space-between;
}
.card-title { font-size: 14px; font-weight: 600; }
.card-body { padding: 20px; }

.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }
.kpi-card {
  background: var(--surface); border: 1px solid var(--border-subtle);
  border-radius: var(--r-md); padding: 20px; box-shadow: var(--shadow-sm);
}
.kpi-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-secondary); margin-bottom: 8px; }
.kpi-value { font-size: 28px; font-weight: 700; line-height: 1; color: var(--text-primary); margin-bottom: 4px; }
.kpi-delta { font-size: 12px; font-weight: 500; }
.kpi-delta.up { color: var(--green); }
.kpi-delta.down { color: var(--red); }
.kpi-delta.neutral { color: var(--text-secondary); }

.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 8px; border-radius: 100px;
  font-size: 11px; font-weight: 600; white-space: nowrap;
}
.badge.active, .badge.success { background: var(--green-dim); color: #1a7a30; }
.badge.warning { background: var(--yellow-dim); color: #8a5200; }
.badge.error, .badge.halt { background: var(--red-dim); color: #c0392b; }
.badge.info { background: var(--blue-dim); color: var(--blue); }
.badge.neutral { background: var(--bg); color: var(--text-secondary); border: 1px solid var(--border); }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--r-sm);
  font-size: 13px; font-weight: 500; cursor: pointer; border: none;
  transition: all 0.15s; text-decoration: none;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-light); }
.btn-secondary { background: var(--bg); color: var(--text-primary); border: 1px solid var(--border); }
.btn-secondary:hover { background: #ebebed; }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { background: var(--bg); color: var(--text-primary); }

.table { width: 100%; border-collapse: collapse; }
.table th {
  text-align: left; padding: 10px 16px;
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em;
  color: var(--text-secondary); background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.table td {
  padding: 12px 16px; border-bottom: 1px solid var(--border-subtle);
  font-size: 13px; color: var(--text-primary);
}
.table tr:hover td { background: var(--bg); }
.table tr:last-child td { border-bottom: none; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 20px; }

.progress-bar { height: 6px; background: var(--bg); border-radius: 100px; overflow: hidden; margin-top: 8px; }
.progress-fill { height: 100%; border-radius: 100px; background: var(--blue); }
.progress-fill.green { background: var(--green); }
.progress-fill.yellow { background: var(--yellow); }
.progress-fill.red { background: var(--red); }

.separator { height: 1px; background: var(--border-subtle); margin: 0; }
.dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.dot.green { background: var(--green); }
.dot.red { background: var(--red); }
.dot.yellow { background: var(--yellow); }
.dot.blue { background: var(--blue); }
.dot.gray { background: var(--text-tertiary); }

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');