.auth-section {
        padding-top: 60px;
        padding-bottom: 60px;
        min-height: 70vh;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: #f9f9f9;
    }

    .auth-container {
        max-width: 480px;
        width: 100%;
        margin: 0 auto;
        padding: 35px 40px;
        background-color: #fff;
        border-radius: 12px;
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
        border: 1px solid #e7e7e7;
    }

    .auth-container h2 {
        text-align: center;
        margin-bottom: 30px;
        font-size: 1.8rem;
        color: #1815be;
        font-weight: 700;
    }

    .form-group {
        margin-bottom: 22px;
    }

    .form-group label {
        display: block;
        margin-bottom: 10px;
        font-weight: 600;
        font-size: 0.9rem;
        color: #333;
    }

    .form-group input[type="email"],
    .form-group input[type="text"],
    .form-group input[type="password"] {
        width: 100%;
        padding: 14px 18px;
        border: 1px solid #ddd;
        border-radius: 8px;
        font-size: 1rem;
        color: #465b52;
        font-family: "Spartan", sans-serif;
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
        box-sizing: border-box;
    }

    .form-group input[type="email"]:focus,
    .form-group input[type="text"]:focus,
    .form-group input[type="password"]:focus {
        border-color: #1815be;
        outline: none;
        box-shadow: 0 0 0 3px rgba(24, 21, 190, 0.15);
    }

    .form-group input.is-invalid {
        border-color: #e74c3c !important;
    }
    .form-group input.is-invalid:focus {
        box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.15) !important;
    }
    .invalid-feedback strong {
        display: block;
        margin-top: 5px;
        font-size: 0.85rem;
        color: #e74c3c;
    }

    .auth-button {
        display: block;
        width: 100%;
        padding: 14px;
        background-color: #1815be;
        color: white;
        border: none;
        border-radius: 8px;
        font-size: 1.05rem;
        font-weight: 600;
        font-family: "Spartan", sans-serif;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.1s ease;
        box-shadow: 0 4px 10px rgba(24, 21, 190, 0.2);
        text-align: center;
    }

    .auth-button:hover {
        background-color: #100d8a;
        transform: translateY(-2px);
    }
    .auth-button:active {
        transform: translateY(0px);
    }

    .auth-links {
        text-align: center;
        margin-top: 25px;
        font-size: 0.9rem;
    }
    .auth-links p {
        color: #465b52;
        margin-bottom: 10px;
    }
    .auth-links a {
        color: #1815be;
        font-weight: 600;
        text-decoration: none;
        transition: color 0.3s ease;
    }
    .auth-links a:hover {
        color: #100d8a;
        text-decoration: underline;
    }
    .alert {
        padding: 12px 18px; margin-bottom: 20px; border: 1px solid transparent; border-radius: 8px; font-size: 0.9rem;
    }
    .alert-danger { color: #721c24; background-color: #f8d7da; border-color: #f5c6cb; }
    .alert-danger ul { margin: 0; padding-left: 20px; list-style-type: disc; }
    .alert-success { color: #155724; background-color: #d4edda; border-color: #c3e6cb; }