* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


/* DO NOT SET BACKGROUND HERE */

body {
    height: 100vh;
    overflow: hidden;
}


/* Center layout */

.screen {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}


/* Whistle */

.whistle-img {
    width: 230px;
    margin-bottom: 25px;
    transition: filter 0.4s ease, transform 0.4s ease;
}

.whistle-img:hover {
    filter: drop-shadow(0 0 25px rgba(150, 220, 255, 0.9));
    transform: scale(1.05);
}


/* Button */

.blow-btn {
    padding: 15px 45px;
    border-radius: 50px;
    border: none;
    background: linear-gradient(#2b6cb0, #1e3a8a);
    color: #ffffff;
    font-size: 15px;
    letter-spacing: 2px;
    cursor: pointer;
    transition: box-shadow 0.4s ease, transform 0.2s ease;
}

.blow-btn:hover {
    box-shadow: 0 0 25px rgba(120, 190, 255, 0.9);
}

.blow-btn:active {
    transform: scale(0.95);
    box-shadow: 0 0 35px rgba(160, 220, 255, 1);
}


/* 🎬 CINEMATIC PUSH + FADE TRANSITION */

body.push-transition .screen {
    animation: cinematicExit 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes cinematicExit {
    0% {
        transform: scale(1);
        opacity: 1;
        filter: blur(0);
    }
    60% {
        opacity: 0.6;
    }
    100% {
        transform: scale(1.08);
        opacity: 0;
        filter: blur(10px);
    }
}