* { box-sizing: border-box; font-family: 'Roboto', sans-serif; }
    html {
      font-size: 16px;
    }

    body {
      margin: 0;
      min-height: 100vh;
      background: #f7f7f9;
    }
    a { text-decoration: none; color: inherit; }

    /* NAVBAR */
    nav {
      display: flex;
      align-items: center;
      padding: 18px 40px;
      background: #fff;
      box-shadow: 0 1px 0 rgba(0,0,0,0.06);
    }

    .nav-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.1rem;
      font-weight: 700;
      color: #1a1a2e;
    }

    .logo-icon {
      width: 34px; height: 34px;
      background: #6d28d9;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-weight: 700;
      font-size: 0.95rem;
    }

    .container {
      width: 100%;
      max-width: 1440px;
      margin: auto;
      padding: 50px 20px;
    }

    .card {
      width: 100%;
      max-width: 400px;
      margin: auto;
      background: #fff;
      border-radius: 12px;
      padding: 30px;
      box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    }

    h1 {
      font-size: 24px;
      margin-bottom: 10px;
      text-align: center;
    }

    p.description {
      text-align: center;
      font-size: 14px;
      color: #555;
      margin-bottom: 20px;
    }

    form .form-group {
      margin-bottom: 20px;
    }

    label {
      display: block;
      font-size: 14px;
      margin-bottom: 6px;
    }

    .password-label {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
    }

    input {
      width: 100%;
      min-width: 0;
      padding: 10px;
      font-size: 16px;
      border-radius: 8px;
      border: 1px solid #ccc;
    }

    input.error {
      border-color: #dc2626; /* red for error */
    }

    .error-msg {
      font-size: 12px;
      color: #dc2626;
      margin-top: 4px;
    }

    .btn {
      width: 100%;
      padding: 12px;
      border-radius: 8px;
      border: none;
      background: #6d28d9;
      color: white !important;
      font-size: 14px;
      cursor: pointer;
    }

    button.btn {
      color: white !important;
    }

    button.btn:hover {
      background: #7c22d4 !important;
      color: white !important;
    }

    .btn:hover,
    button.btn:hover,
    button[type="submit"]:hover,
    form .btn:hover {
      background: #7c22d4 !important;
      color: white !important;
      border-color: #7c22d4 !important;
    }

    .btn:focus,
    .btn:active,
    button.btn:focus,
    button.btn:active,
    button[type="submit"]:focus,
    button[type="submit"]:active {
      background: #7c22d4 !important;
      color: white !important;
      border-color: #7c22d4 !important;
      box-shadow: 0 0 0 0 rgba(0,0,0,0) !important;
    }

    .text-center {
      text-align: center;
    }

    .text-primary {
      color: #6d28d9;
    }

    .text-primary:hover {
      text-decoration: underline;
    }

    .alert {
      display: flex;
      align-items: center;
      background: #dcfce7;
      color: #166534;
      padding: 10px 12px;
      border-radius: 8px;
      margin-bottom: 20px;
      font-size: 13px;
    }

    .alert-icon {
      margin-right: 6px;
      font-size: 16px;
    }

    .forgot-link {
      font-size: 13px;
      color: #6d28d9;
    }

    .forgot-link:hover {
      text-decoration: underline;
    }

    .register-link {
      font-size: 13px;
      margin-top: 16px;
      line-height: 1.5;
    }

    @media (max-width: 520px) {
      nav {
        padding: 14px 16px;
        flex-wrap: wrap;
      }

      .nav-logo {
        gap: 8px;
        font-size: 1rem;
      }

      .container {
        padding: 32px 16px 48px;
      }

      .card {
        padding: 24px 20px;
        border-radius: 10px;
      }

      h1 {
        font-size: 1.5rem;
      }

      .password-label {
        align-items: flex-start;
      }

      .forgot-link {
        font-size: 12px;
      }

      .alert {
        align-items: flex-start;
        line-height: 1.45;
      }
    }

    @media (max-width: 360px) {
      nav {
        padding-inline: 12px;
      }

      .container {
        padding-inline: 12px;
      }

      .card {
        padding: 20px 16px;
      }
    }