body {
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url("Blue\ hearts\ on\ white\ background.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    font-family: "Pixelify Sans", sans-serif;
}

/* Envelope Screen */
#envelope-container {
    text-align: center;
    cursor:pointer;
    padding: 20px;
}

#envelope-container #heart {
    max-width: 100%;
    height: auto;
    width: min(300px, 50vw);
}

@keyframes pulse {
    0% {
        transform:scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

#envelope{
    width: 200px;
    animation: pulse 1.5s infinite;
    cursor: pointer;
}

#letter-container{
    display: none;
    position:fixed;
    inset: 0;
    justify-content: center;
    align-items: center;
}

.letter-window{
    width: 90vw;
    max-width: 800px;
    min-width: 280px;
    aspect-ratio: 3/2;
    padding: 20px 20px 0 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-image: url("windowisi_scaled_66x_pngcrushed.png");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    border-radius: 12px;
    gap: 1px;
    padding-top: clamp(120px, 20vw, 180px);

    transform: scale(1.2);
    opacity: 0;
    transition: transform 0.6s ease, opacity 0.6s ease;
}

.letter-window.open {
    transform: scale(1);
    opacity: 1;
}

h1 {
    font-size: clamp(18px, 4vw, 30px);
    margin:0;
    padding: 0 10px;
}

#envelope-container p {
    font-size: clamp(20px, 5vw, 40px);
    margin: 30px 0 10px 0;
    padding: 0 10px;
}

/* Cat */

.cinnamon-heart {
    width: min(250px, 50vw);
    max-width: 250px;
    margin: 10px 0;
    transition: width 0.4s ease;
}

.letter-window.final .cinnamon-heart {
    width: min(180px, 40vw);
}

/* buttons */
.buttons {
    display: flex;
    justify-content: center;
    gap: clamp(15px, 4vw, 30px);
    position: relative;
    flex-wrap: wrap;
    padding: 0 10px;
}

.no-wrapper{
    position:relative;
}

.btn {
    width: clamp(80px, 20vw, 120px);
    max-width: 120px;
    cursor: pointer;
    user-select: none;
}

.yes-btn,
.no-btn {
    width: clamp(80px, 20vw, 120px);
    max-width: 120px;
    height: auto;
    display: inline-block;
}

.yes-btn {
    position: relative;
    z-index: 2;
    transform-origin: center center;
    transition: transform 0.3s ease;
}

.no-btn {
    z-index: 1;
    position: relative;
    transition: transform 0.15s ease;
    cursor: default;
}

.final-text{
    font-size: clamp(16px, 3vw, 22px);
    line-height: 1.4;
    text-align: center;
    display: inline-block;
    padding: 10px clamp(15px, 4vw, 20px);
    margin: 0 10px;
    background-color: rgba(255,240,240,0.5);
    border-radius: 12px;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
    .letter-window {
        width: 95vw;
        padding-top: clamp(120px, 25vw, 160px);
        gap: 5px;
        padding-bottom: 20px;
    }
    
    .letter-window h1 {
        font-size: clamp(16px, 5vw, 24px);
        margin-top: 20px;
        margin-bottom: 5px;
    }
    
    .letter-window .cinnamon-heart {
        margin: 5px 0;
        width: min(180px, 40vw);
    }
    
    .letter-window .buttons {
        margin-top: -20px;
        margin-bottom: 10px;
    }
    
    #envelope-container p {
        font-size: clamp(18px, 6vw, 32px);
    }
    
    #envelope-container #heart {
        width: min(250px, 45vw);
    }
}

@media (max-width: 480px) {
    .letter-window {
        width: 98vw;
        padding: 15px 15px 20px 15px;
        padding-top: clamp(100px, 35vw, 140px);
        gap: 3px;
        justify-content: flex-start;
        overflow-y: auto;
        max-height: 95vh;
    }
    
    .letter-window h1 {
        font-size: clamp(14px, 4.5vw, 20px);
        margin-top: 15px;
        margin-bottom: 3px;
        line-height: 1.2;
    }
    
    .letter-window .cinnamon-heart {
        width: min(150px, 50vw);
        margin: 3px 0;
    }
    
    .letter-window .buttons {
        gap: 8px;
        margin-top: -25px;
        margin-bottom: 5px;
        flex-shrink: 0;
    }
    
    .letter-window .btn {
        width: clamp(70px, 18vw, 100px);
    }
    
    .letter-window.final .cinnamon-heart {
        width: min(120px, 45vw);
    }
    
    #envelope-container #heart {
        width: min(200px, 50vw);
    }
}