body {
    background-color: #f5f5f5; /* Beyaz Arka Plan */
    color: #333; /* Koyu Gri Yazı Rengi */
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: sans-serif;
}

.login-card {
    background-color: #ffffff; /* Beyaz Kart Arka Planı */
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 2.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
}

.login-card-header {
    text-align: center;
    margin-bottom: 2rem;
}

    .login-card-header h2 {
        font-size: 2.5rem;
        font-weight: 700;
        color: #8B0000; /* Koyu Kan Kırmızısı Başlık */
    }

.form-control {
    background-color: #fcfcfc;
    color: #333;
    border: 1px solid #ccc;
    transition: all 0.3s ease;
}

    .form-control:focus {
        background-color: #fff;
        border-color: #8B0000; /* Koyu Kan Kırmızısı Odak Rengi */
        box-shadow: 0 0 0 0.25rem rgba(139, 0, 0, 0.25);
    }

.btn-primary {
    background-color: #8B0000; /* Koyu Kan Kırmızısı Buton */
    border-color: #8B0000;
    font-weight: 600;
    transition: all 0.3s ease;
}

    .btn-primary:hover {
        background-color: #6a0000; /* Daha Koyu Kan Kırmızısı Hover Rengi */
        border-color: #6a0000;
    }

.form-check-input:checked {
    background-color: #8B0000; /* Koyu Kan Kırmızısı Checkbox */
    border-color: #8B0000;
}

.form-check-label, .forgot-password {
    color: #555; /* Daha Koyu Gri Metin */
}

    .forgot-password a {
        color: #8B0000;
        text-decoration: none;
        transition: color 0.3s ease;
    }

        .forgot-password a:hover {
            color: #6a0000;
        }