body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: linear-gradient(#eef6fb, #d7eaf5);
  color: #1f2933;
}

.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  width: 360px;
  background: white;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 8px 28px rgba(0,0,0,0.18);
}

.login-card h1 {
  margin: 0;
  text-align: center;
  color: #1f5f8b;
  font-size: 34px;
}

.login-subtitle {
  text-align: center;
  margin-top: 6px;
  margin-bottom: 28px;
  color: #5b6770;
}

label {
  display: block;
  margin-top: 14px;
  margin-bottom: 6px;
  font-weight: bold;
}

input {
  width: 100%;
  box-sizing: border-box;
  padding: 11px;
  border: 1px solid #b9c7d3;
  border-radius: 6px;
  font-size: 15px;
}

button {
  width: 100%;
  margin-top: 22px;
  padding: 12px;
  border: none;
  border-radius: 6px;
  background: linear-gradient(#2f83b7, #1f5f8b);
  color: white;
  font-size: 16px;
  font-weight: bold;
  cursor: pointer;
}

button:hover {
  background: linear-gradient(#3a91c6, #236b9c);
}

.login-error {
  color: #b91c1c;
  margin-top: 12px;
  min-height: 20px;
  font-weight: bold;
  text-align: center;
}

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

.sidebar {
  width: 230px;
  background: linear-gradient(#1f5f8b, #16496d);
  color: white;
  padding: 22px;
  box-sizing: border-box;
}

.sidebar-logo {
  font-size: 28px;
  font-weight: bold;
  margin-bottom: 32px;
}

.nav-link {
  display: block;
  color: white;
  text-decoration: none;
  padding: 12px 10px;
  border-radius: 6px;
  font-weight: bold;
}

.nav-link:hover {
  background: rgba(255,255,255,0.15);
}

.logout-button {
  margin-top: 30px;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
}

.main-area {
  flex: 1;
  background: #f3f7fa;
}

.top-header {
  height: 86px;
  background: white;
  border-bottom: 1px solid #d8e2ea;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
}

.top-header h1 {
  margin: 0;
  color: #1f5f8b;
}

.tenant-name {
  color: #667085;
  margin-top: 4px;
}

.user-box {
  font-weight: bold;
  color: #1f2933;
}

.page-content {
  padding: 28px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.summary-card,
.content-card {
  background: white;
  border: 1px solid #d8e2ea;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 3px 12px rgba(0,0,0,0.06);
}

.summary-label {
  color: #667085;
  font-weight: bold;
  margin-bottom: 8px;
}

.summary-value {
  font-size: 30px;
  font-weight: bold;
  color: #1f5f8b;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.card-header h2 {
  margin: 0;
  color: #1f2933;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th {
  text-align: left;
  background: #eef6fb;
  color: #1f2933;
  padding: 10px;
  border-bottom: 1px solid #d8e2ea;
}

.data-table td {
  padding: 10px;
  border-bottom: 1px solid #e5edf3;
}