:root {
  --brand-primary: #1e5f4f;
  --brand-primary-dark: #143f34;
  --brand-accent: #2f9e6e;
  --sidebar-width: 250px;
}

body {
  background-color: #f4f6f8;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* ---------- Topbar ---------- */
.app-topbar {
  background: linear-gradient(90deg, var(--brand-primary-dark), var(--brand-primary));
  padding: 0.6rem 1rem;
}
.app-topbar .navbar-brand { color: #fff; }

/* ---------- Layout ---------- */
.app-layout {
  display: flex;
  min-height: calc(100vh - 56px);
}

.app-sidebar {
  width: var(--sidebar-width);
  background: #ffffff;
  border-right: 1px solid #e2e6ea;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.app-sidebar .nav-link {
  color: #33475b;
  border-radius: 6px;
  padding: 0.55rem 0.8rem;
  margin-bottom: 2px;
  font-size: 0.92rem;
}
.app-sidebar .nav-link:hover {
  background: #eef5f2;
  color: var(--brand-primary-dark);
}
.app-sidebar .nav-link.active {
  background: var(--brand-primary);
  color: #fff;
}

.app-content {
  flex: 1;
  padding: 1.5rem;
  min-width: 0;
}

/* ---------- Auth pages ---------- */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand-primary-dark), var(--brand-accent));
  padding: 1rem;
}
.auth-card {
  width: 100%;
  max-width: 420px;
  border: none;
  border-radius: 14px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.25);
}

/* ---------- Dashboard cards ---------- */
.stat-card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}
.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #fff;
}

/* ---------- Responsive sidebar ---------- */
@media (max-width: 991.98px) {
  .app-sidebar {
    position: fixed;
    top: 56px;
    left: 0;
    bottom: 0;
    z-index: 1030;
    transform: translateX(-100%);
  }
  .app-sidebar.show { transform: translateX(0); }
  .app-content { padding: 1rem; }
}