body {
        background: radial-gradient(circle at top left, #fff0f5, #ffe4e1);
        font-family: 'Open Sans', sans-serif;
        margin: 0;
        padding: 3rem;
        color: #5c3a3a;
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        text-align: justify;
    }

    .letter-container {
        background: #fff;
        padding: 3rem;
        max-width: 900px;
        border-radius: 20px;
        box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
        border: 1px solid #eac8c8;
        position: relative;
        overflow: hidden;
        animation: fadeIn 2s ease-in-out;
    }

    .letter-container::before {
        content: '';
        position: absolute;
        top: -50px;
        left: -50px;
        width: 200px;
        height: 200px;
        background: url('https://cdn.pixabay.com/photo/2014/04/02/10/44/heart-306404_1280.png') no-repeat center;
        background-size: contain;
        opacity: 0.1;
        transform: rotate(-15deg);
    }

    h1 {
        font-family: 'Great Vibes', cursive;
        text-align: center;
        font-size: 3rem;
        color: #c06060;
        margin-bottom: 2rem;
    }

    .letter-container p {
        line-height: 1.9;
        font-size: 1.15rem;
        margin-bottom: 1.5rem;
    }

    .signature {
        margin-top: 2.5rem;
        text-align: right;
        font-style: italic;
        font-weight: 600;
        font-size: 1.1rem;
    }

    .hearts {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        pointer-events: none;
        overflow: hidden;
        z-index: 999;
    }

    .heart {
        position: absolute;
        width: 20px;
        height: 20px;
        background: url('https://cdn-icons-png.flaticon.com/512/833/833472.png') no-repeat center;
        background-size: contain;
        animation: floatUp 5s infinite ease-in;
    }

    @keyframes floatUp {
        0% {
            transform: translateY(100vh) scale(0.5);
            opacity: 0;
        }

        50% {
            opacity: 1;
        }

        100% {
            transform: translateY(-10vh) scale(1);
            opacity: 0;
        }
    }

    @keyframes fadeIn {
        from {
            opacity: 0;
            transform: translateY(20px);
        }

        to {
            opacity: 1;
            transform: translateY(0);
        }
    }