* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f7fb;
  color: #172033;
}

.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #071426, #0f2a4d);
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: #ffffff;
  border-radius: 18px;
  padding: 34px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
}

.logo {
  font-size: 30px;
  font-weight: 800;
  color: #0f2a4d;
  margin-bottom: 6px;
}

.tagline {
  color: #65758b;
  margin-bottom: 28px;
}

label {
  display: block;
  font-weight: 700;
  margin: 16px 0 8px;
}

input {
  width: 100%;
  padding: 14px;
  border: 1px solid #d9e2ef;
  border-radius: 10px;
  font-size: 15px;
}

button,
.btn {
  display: inline-block;
  width: 100%;
  margin-top: 22px;
  padding: 14px;
  border: 0;
  border-radius: 10px;
  background: #2563eb;
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
}

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

.sidebar {
  width: 250px;
  background: #071426;
  color: #ffffff;
  padding: 24px 18px;
}

.sidebar .brand {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 30px;
}

.sidebar a {
  display: block;
  color: #cbd5e1;
  text-decoration: none;
  padding: 12px 14px;
  border-radius: 10px;
  margin-bottom: 6px;
}

.sidebar a:hover {
  background: rgba(255,255,255,.08);
  color: #ffffff;
}

.main {
  flex: 1;
  padding: 30px;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 26px;
}

.page-title {
  font-size: 30px;
  font-weight: 800;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
}

.stat-card,
.panel {
  background: #ffffff;
  border: 1px solid #e5ecf5;
  border-radius: 16px;
  padding: 22px;
  box-shadow: 0 6px 20px rgba(15,42,77,.06);
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: #2563eb;
}

.stat-label {
  color: #65758b;
  margin-top: 6px;
}

.table-placeholder {
  margin-top: 20px;
  background: #ffffff;
  border: 1px solid #e5ecf5;
  border-radius: 16px;
  padding: 24px;
}