:root {
  --brand: #673ab7;
  --brand-dark: #4b2a86;
}

body {
  background: #f4f5f9;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.sidebar {
  width: 240px;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--brand), var(--brand-dark));
  color: #fff;
}

.sidebar-brand {
  display: flex;
  gap: 10px;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,.15);
  padding-bottom: 16px;
}

.sidebar .nav-link {
  color: rgba(255,255,255,.85);
  border-radius: 8px;
  font-size: .92rem;
}

.sidebar .nav-link:hover {
  background: rgba(255,255,255,.1);
  color: #fff;
}

.sidebar .nav-link.active {
  background: #fff;
  color: var(--brand-dark);
  font-weight: 600;
}

.sidebar-mobile-list .nav-link {
  color: #333;
}

.mobile-topbar {
  background: var(--brand);
  z-index: 1030;
  height: 52px;
}

.main-content {
  min-height: 100vh;
}

@media (max-width: 767.98px) {
  .main-content { padding-top: 64px !important; }
}

.card {
  border: none;
  border-radius: 14px;
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
}

.page-title {
  font-weight: 700;
  color: #2b2b40;
}

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

.table thead {
  background: #f0edf9;
}

.badge-hadir { background: #16a34a; }
.badge-ijin { background: #2563eb; }
.badge-sakit { background: #f59e0b; }
.badge-alpha { background: #dc2626; }

.siswa-row:nth-child(odd) { background: #fafafa; }

.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
}

.login-card {
  width: 100%;
  max-width: 380px;
  border-radius: 16px;
}