:root {
      --navy: #0b2347;
      --navy-light: #163a6b;
      --teal: #18b6b1;
      --grey: #f4f6f8;
      --dark: #1c1c1c;
    }

    * { box-sizing: border-box; }

    body {
      margin: 0;
      font-family: "Inter", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
      background: var(--grey);
      color: var(--dark);
    }

    header {
      background: white;
      border-bottom: 1px solid #e5e7eb;
      padding: 1rem 2rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    header img {
      height: 42px;
    }

    nav a {
      margin-left: 1.5rem;
      text-decoration: none;
      font-weight: 600;
      color: var(--navy);
    }

    .btn {
      background: var(--teal);
      color: white;
      padding: 0.75rem 1.25rem;
      border-radius: 6px;
      text-decoration: none;
      font-weight: 600;
      display: inline-block;
    }

    .container {
      max-width: 1200px;
      margin: auto;
      padding: 3rem 2rem;
    }

    .hero {
      display: grid;
      grid-template-columns: 1.2fr 1fr;
      gap: 3rem;
      align-items: center;
    }

    .hero h1 {
      font-size: 3rem;
      color: var(--navy);
      margin-bottom: 1rem;
    }

    .hero p {
      font-size: 1.2rem;
      line-height: 1.6;
      margin-bottom: 2rem;
    }

    .card {
      background: white;
      border-radius: 10px;
      padding: 1.5rem;
      box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    }

    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      margin-top: 3rem;
    }

    footer {
      background: var(--navy);
      color: white;
      padding: 2rem;
      text-align: center;
      margin-top: 4rem;
    }

    /* Dashboard styles */
    .dashboard {
      display: grid;
      grid-template-columns: 260px 1fr;
      min-height: 100vh;
    }

    .sidebar {
      background: var(--navy);
      color: white;
      padding: 2rem 1.5rem;
    }

    .sidebar h2 {
      font-size: 1.2rem;
      margin-bottom: 2rem;
    }

    .sidebar a {
      display: block;
      color: white;
      text-decoration: none;
      margin-bottom: 1rem;
      font-weight: 500;
    }

    .content {
      padding: 2.5rem;
    }

    table {
      width: 100%;
      border-collapse: collapse;
      margin-top: 1.5rem;
    }

    th, td {
      padding: 0.75rem;
      border-bottom: 1px solid #e5e7eb;
      text-align: left;
    }

    th { background: #f9fafb; }

    .badge {
      background: var(--teal);
      color: white;
      padding: 0.25rem 0.6rem;
      border-radius: 12px;
      font-size: 0.75rem;
    }

    /* Login */
    .login-box {
      max-width: 420px;
      margin: 6rem auto;
    }

    input {
      width: 100%;
      padding: 0.75rem;
      margin-bottom: 1rem;
      border-radius: 6px;
      border: 1px solid #d1d5db;
    }

    @media (max-width: 900px) {
      .hero { grid-template-columns: 1fr; }
      .grid-3 { grid-template-columns: 1fr; }
      .dashboard { grid-template-columns: 1fr; }
      .sidebar { display: none; }
    }