:root {
  --bk-green: #0d7a4f;
  --bk-green-dark: #095c3c;
  --bk-green-soft: #e8f5ef;
  --bk-white: #ffffff;
  --bk-ink: #1a2e24;
  --bk-muted: #5c6f66;
  --bk-card-shadow: 0 8px 24px rgba(13, 122, 79, 0.08);
  --bk-radius: 12px;
}

body.bk-app {
  background: linear-gradient(160deg, #f4fbf7 0%, #ffffff 45%, #eef8f2 100%);
  color: var(--bk-ink);
  min-height: 100vh;
}

.bk-sidebar {
  background: linear-gradient(180deg, var(--bk-green) 0%, var(--bk-green-dark) 100%);
  min-height: 100vh;
  box-shadow: 4px 0 24px rgba(9, 92, 60, 0.15);
}

.bk-sidebar .brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #fff;
  padding: 1.25rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.bk-sidebar .nav-link {
  color: rgba(255, 255, 255, 0.88);
  border-radius: 8px;
  margin: 0.15rem 0.5rem;
  padding: 0.55rem 0.85rem;
  font-weight: 500;
}

.bk-sidebar .nav-link:hover,
.bk-sidebar .nav-link:focus {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}

.bk-sidebar .nav-link.active {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.bk-main {
  padding: 1.5rem 1.75rem 2rem;
}

.bk-page-title {
  font-weight: 700;
  color: var(--bk-green-dark);
  margin-bottom: 1rem;
}

.bk-card {
  background: var(--bk-white);
  border: 1px solid rgba(13, 122, 79, 0.12);
  border-radius: var(--bk-radius);
  box-shadow: var(--bk-card-shadow);
}

.bk-form-card {
  width: 100%;
  max-width: none;
}

.bk-card .card-header {
  background: var(--bk-green-soft);
  border-bottom: 1px solid rgba(13, 122, 79, 0.12);
  font-weight: 600;
  color: var(--bk-green-dark);
  border-radius: var(--bk-radius) var(--bk-radius) 0 0 !important;
}

.bk-stat {
  border-radius: var(--bk-radius);
  padding: 1.1rem 1.25rem;
  background: var(--bk-white);
  border: 1px solid rgba(13, 122, 79, 0.1);
  box-shadow: var(--bk-card-shadow);
  height: 100%;
}

.bk-stat .label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--bk-muted);
  font-weight: 600;
}

.bk-stat .value {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--bk-green-dark);
}

.btn-bk-primary {
  background: var(--bk-green);
  border-color: var(--bk-green);
  color: #fff;
  font-weight: 600;
  border-radius: 8px;
}

.btn-bk-primary:hover {
  background: var(--bk-green-dark);
  border-color: var(--bk-green-dark);
  color: #fff;
}

.btn-outline-bk {
  color: var(--bk-green);
  border-color: var(--bk-green);
  border-radius: 8px;
  font-weight: 600;
}

.btn-outline-bk:hover {
  background: var(--bk-green);
  color: #fff;
}

.table thead th {
  background: var(--bk-green-soft);
  color: var(--bk-green-dark);
  font-weight: 600;
  border-bottom: 2px solid rgba(13, 122, 79, 0.2);
}

.badge-stock-available {
  background: #d4edda;
  color: #155724;
}
.badge-stock-low {
  background: #fff3cd;
  color: #856404;
}
.badge-stock-near {
  background: #cce5ff;
  color: #004085;
}
.badge-stock-expired {
  background: #f8d7da;
  color: #721c24;
}
.badge-stock-out {
  background: #e2e3e5;
  color: #383d41;
}

.bk-login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bk-green) 0%, var(--bk-green-dark) 50%, #0a3d28 100%);
}

.bk-login-card {
  max-width: 420px;
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  border: none;
}

.bk-login-card .card-body {
  padding: 2rem;
}

.bk-login-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--bk-green-dark);
  text-align: center;
  margin-bottom: 0.25rem;
}

.bk-login-sub {
  text-align: center;
  color: var(--bk-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

main > .container {
  padding-top: 0;
}

.bk-topbar {
  background: var(--bk-white);
  border-bottom: 1px solid rgba(13, 122, 79, 0.12);
  padding: 0.75rem 1.25rem;
  margin: -1.5rem -1.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}