:root {
  --kv-primary: #1e3a5f;
  --kv-primary-dark: #14283f;
  --kv-accent: #ff6b35;
  --kv-bg: #f4f6f9;
}

body {
  background-color: var(--kv-bg);
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.wrapper { min-height: 100vh; }

/* ===== Sidebar ===== */
.sidebar {
  width: 250px;
  min-width: 250px;
  background: linear-gradient(180deg, var(--kv-primary) 0%, var(--kv-primary-dark) 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}
.sidebar-brand { border-bottom: 1px solid rgba(255,255,255,.1); }
.sidebar .nav-section {
  color: rgba(255,255,255,.45);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: 14px 14px 4px;
  font-weight: 600;
}
.sidebar .nav-link {
  color: rgba(255,255,255,.85);
  padding: .55rem .9rem;
  border-radius: 8px;
  font-size: .92rem;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all .15s ease;
}
.sidebar .nav-link i { font-size: 1.05rem; width: 20px; text-align: center; }
.sidebar .nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar .nav-link.active { background: var(--kv-accent); color: #fff; font-weight: 600; }
.sidebar-footer { margin-top: auto; border-top: 1px solid rgba(255,255,255,.1); }

/* ===== Topbar ===== */
.topbar { background: #fff; border-bottom: 1px solid #e9ecef; padding: .6rem 0; }
.avatar-circle {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--kv-primary); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .9rem;
}

/* ===== Cards & Stat Widgets ===== */
.stat-card {
  border: none; border-radius: 14px; color: #fff; position: relative; overflow: hidden;
  box-shadow: 0 4px 14px rgba(0,0,0,.08);
}
.stat-card .bi { font-size: 2.4rem; opacity: .35; position: absolute; right: 16px; top: 16px; }
.stat-card h3 { font-weight: 700; }
.bg-grad-blue { background: linear-gradient(135deg, #1e3a5f, #2c5a8f); }
.bg-grad-orange { background: linear-gradient(135deg, #ff6b35, #e0521f); }
.bg-grad-green { background: linear-gradient(135deg, #1e824c, #2fa86b); }
.bg-grad-purple { background: linear-gradient(135deg, #5b3e96, #7e5bc7); }

.card { border: none; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,.06); }
.table thead th { font-size: .78rem; text-transform: uppercase; color: #6c757d; border-bottom-width: 1px; }
.table td, .table th { vertical-align: middle; }

.app-footer { color: #8a94a6; }

/* Login page */
.login-wrapper {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--kv-primary) 0%, var(--kv-primary-dark) 100%);
  display: flex; align-items: center; justify-content: center;
}
.login-card { border-radius: 16px; overflow: hidden; max-width: 420px; width: 100%; }

@media (max-width: 991.98px) {
  .sidebar { position: fixed; left: -260px; z-index: 1050; transition: left .2s ease; box-shadow: 4px 0 20px rgba(0,0,0,.2); }
  .sidebar.show { left: 0; }
}

/* Print styles for report pages */
@media print {
  .sidebar, .topbar, .app-footer, .no-print { display: none !important; }
  .main-content { margin: 0 !important; }
}