:root {
  --nbr-primary: #0b5b3c;
  --nbr-primary-dark: #083f29;
  --nbr-primary-light: #e7f3ee;
  --nbr-accent: #d99a2b;
  --nbr-danger: #c0392b;
  --nbr-sidebar-w: 250px;
  --nbr-bg: #f4f6f5;
  --nbr-card-radius: 14px;
}

* { box-sizing: border-box; }

body {
  background: var(--nbr-bg);
  font-family: 'Segoe UI', 'Noto Sans Bengali', system-ui, -apple-system, sans-serif;
  color: #1f2a24;
}

a { text-decoration: none; }

/* ---------- Auth pages ---------- */
.auth-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 16px;
  background: linear-gradient(160deg, var(--nbr-primary) 0%, var(--nbr-primary-dark) 55%, #06231a 100%);
}
.auth-card {
  width: 100%;
  max-width: 460px;
  background: #fff;
  border-radius: var(--nbr-card-radius);
  padding: 32px 28px;
  box-shadow: 0 20px 45px rgba(0,0,0,0.25);
}
.auth-card .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}
.auth-card .brand .logo-badge {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: var(--nbr-primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 15px;
}
.auth-card h1 { font-size: 1.35rem; font-weight: 700; margin: 0; }
.auth-card p.subtitle { color: #6b7a72; margin-bottom: 22px; font-size: 0.92rem; }

/* ---------- App shell ---------- */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
  width: var(--nbr-sidebar-w);
  background: var(--nbr-primary-dark);
  color: #eaf3ee;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  padding: 20px 14px;
  overflow-y: auto;
  z-index: 1040;
  transition: transform .25s ease;
}
.sidebar .brand {
  display: flex; align-items: center; gap: 10px;
  color: #fff; font-weight: 700; font-size: 1.05rem;
  padding: 6px 8px 18px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 14px;
}
.sidebar .brand .logo-badge {
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--nbr-accent);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; color: #16321f; font-size: 13px;
}
.sidebar .nav-section-title {
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: .08em;
  color: rgba(255,255,255,0.45);
  padding: 14px 10px 6px;
}
.sidebar .nav-link {
  color: #d7e7de;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.92rem;
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 2px;
}
.sidebar .nav-link i { width: 18px; text-align: center; opacity: .9; }
.sidebar .nav-link:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar .nav-link.active { background: var(--nbr-accent); color: #16321f; font-weight: 600; }

.sidebar-backdrop {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 1030;
}

.main-col {
  margin-left: var(--nbr-sidebar-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.topbar {
  background: #fff;
  border-bottom: 1px solid #e5e9e7;
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 1020;
}
.topbar .menu-btn {
  display: none;
  border: none; background: var(--nbr-primary-light); color: var(--nbr-primary-dark);
  width: 38px; height: 38px; border-radius: 10px; font-size: 1rem;
}
.topbar .page-title { font-weight: 700; font-size: 1.05rem; color: #16321f; }
.topbar .user-chip {
  display: flex; align-items: center; gap: 8px;
  background: var(--nbr-primary-light);
  border-radius: 999px;
  padding: 5px 12px 5px 5px;
  font-size: 0.85rem;
}
.topbar .user-chip .avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--nbr-primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.75rem; font-weight: 700;
}

.content-area { padding: 22px; flex: 1; }

.card-clean {
  background: #fff;
  border: 1px solid #e9edeb;
  border-radius: var(--nbr-card-radius);
  box-shadow: 0 1px 3px rgba(16,40,28,0.04);
}

.stat-card {
  border-radius: var(--nbr-card-radius);
  padding: 18px 20px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.stat-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform .15s ease, box-shadow .15s ease;
  border-radius: var(--nbr-card-radius);
}
.stat-card-link:hover, .stat-card-link:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 22px rgba(16,40,28,0.18);
  color: inherit;
  outline: none;
}
.stat-card-link:active { transform: translateY(-1px); }
.stat-card-link .stat-card::after {
  content: "\f138"; /* bootstrap-icons chevron-right */
  font-family: "bootstrap-icons";
  position: absolute;
  right: 14px;
  bottom: 12px;
  font-size: .85rem;
  opacity: .55;
}
.stat-card .stat-value { font-size: 1.9rem; font-weight: 800; line-height: 1; }
.stat-card .stat-label { font-size: 0.82rem; opacity: .9; margin-top: 6px; }
.stat-card i.stat-icon {
  position: absolute; right: 14px; top: 14px; font-size: 1.6rem; opacity: .35;
}
.stat-card.bg-primary-nbr { background: linear-gradient(135deg, var(--nbr-primary), var(--nbr-primary-dark)); }
.stat-card.bg-warning-nbr { background: linear-gradient(135deg, #e0a733, #b9791a); }
.stat-card.bg-success-nbr { background: linear-gradient(135deg, #2f9e5c, #1c6b3c); }
.stat-card.bg-danger-nbr  { background: linear-gradient(135deg, #d1554a, #a3372e); }
.stat-card.bg-info-nbr    { background: linear-gradient(135deg, #2f8ea0, #1e5f6c); }

.badge-status-pending  { background: #fdf1d9; color: #8a5a00; }
.badge-status-approved { background: #e2f6ea; color: #197b45; }
.badge-status-rejected { background: #fbe4e1; color: #a3372e; }
.badge-status-pending, .badge-status-approved, .badge-status-rejected {
  font-weight: 600; padding: 5px 10px; border-radius: 999px; font-size: 0.76rem;
}

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

.table-clean thead th {
  background: var(--nbr-primary-light);
  border-bottom: none;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--nbr-primary-dark);
  white-space: nowrap;
}
.table-clean td { vertical-align: middle; font-size: 0.9rem; }
.table-responsive-clean { border-radius: var(--nbr-card-radius); overflow: hidden; border: 1px solid #e9edeb; }

.filter-bar { background: #fff; border: 1px solid #e9edeb; border-radius: var(--nbr-card-radius); padding: 14px 16px; }

.form-label-sm { font-size: .82rem; font-weight: 600; color: #35473d; margin-bottom: 4px; }

.tin-hero {
  background: linear-gradient(135deg, var(--nbr-primary), var(--nbr-primary-dark));
  border-radius: var(--nbr-card-radius);
  padding: 26px 24px;
  color: #fff;
}

footer.app-footer { padding: 16px 22px; color: #8a978f; font-size: .8rem; }

/* ---------- Mobile ---------- */
@media (max-width: 991.98px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.show { transform: translateX(0); }
  .sidebar-backdrop.show { display: block; }
  .main-col { margin-left: 0; }
  .topbar .menu-btn { display: inline-flex; align-items:center; justify-content:center; }
  .content-area { padding: 14px; }
  .topbar { padding: 10px 14px; }
  .topbar .user-chip span.chip-name { display: none; }
  .stat-card .stat-value { font-size: 1.6rem; }
}

@media (max-width: 575.98px) {
  .auth-card { padding: 24px 18px; }
  .table-clean td, .table-clean th { font-size: 0.82rem; padding: 8px 10px; }
}