.happy{

    display: inline;
    display: flex;
    flex-direction: column;     /* image on top, letter below */
    align-items: center;
     
    
}

/* Perfect horizontal centering of the two demo images */
.demo-wrapper {
    width: 100%;
    text-align: center;
}



/* Center both demo boxes */
#content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;   /* space between the two */
    flex-wrap: wrap; /* works for mobile also */
}

body {
    margin: 0;
    padding: 0;
    height: 100vh;          /* full screen height */
    display: flex;
    justify-content: center; /* horizontal center */
    align-items: center;     /* vertical center */
    background: #000;        /* optional */
}
.demo img{
    height: 100px;
    transition: 1s;
    filter: grayscale(0%) drop-shadow(0 0 32px #ff0022);
}

.demo img:hover{
    height: 120px;
    filter: grayscale(0%) drop-shadow(0 0 32px #ff0022);

    

}
.demo {
    
    height: 150px;
    width: 150px;
    margin-right: 65px;
    margin-bottom: 40px;
   transition: 1s;
   display: inline;
}



.box1{
   
    height: 100px;
    width: 200px;
    margin: 0 auto;   /* THIS centers horizontally */
    border-radius: 20px;
    margin-bottom: 50px;
    margin-top: 50px;
     display: flex;              /* Make it a flex container */
    justify-content: center;    /* Horizontal center */
    align-items: center; 
}

.boxi{
    background-color: aliceblue;
    height: 50px;
    width: 100px;
    margin: 0 auto; 
    justify-content: center;
    align-items: center;
    border-radius: 20px;
}


.Ha{
   

    display: flex;
    justify-content: center;   /* centers horizontally */
    align-items: center;        /* centers vertically (optional) */
    gap: 10px; 
     
}

.Bi {
    display: flex;
    justify-content: center;   /* centers horizontally */
    align-items: center;        /* optional (vertical alignment) */
    gap: 10px;                  /* spacing between items */
}

body{
    color: white;
    background-color: black;
}
img {
  height: 40px;
}

.happy1{

    display: flex;
    flex-direction: column;     /* image above, letter below */
    align-items: center; 
  
    
}




.Ba {
    display: flex;
    justify-content: center;   /* horizontal center */
    align-items: center;        /* vertical center (optional) */
    gap: 10px;  
                   /* space between each item */
}

.happy2{
     display: flex;
    flex-direction: column;     /* image on top, letter below */
    align-items: center;   
 
    
}


.happy2 img {
    transform: rotate(180deg); /* rotate only images inside .happy2 */
}

.happy1 img {
    transform: rotate(180deg); /* rotate only images inside .happy2 */
}

.happy img {
    transform: rotate(180deg); /* rotate only images inside .happy2 */
}



@font-face {
    font-family: 'StrangerThings';
    src: url('StrangerThings-Regular.ttf') format('truetype');
}

.happy,
.happy1,
.happy2 {
    font-family: 'StrangerThings', serif;
    color: #e50914;        /* Stranger Things red */
    font-size: 100px;
    letter-spacing: 5px;
    text-transform: uppercase;

    text-shadow: 
        0 0 5px #e50914,
        0 0 10px #e50914,
        0 0 20px #e50914;

    transition: 0.5s;
}




/* ----------- BASE STYLE ----------- */
.happy img,
.happy1 img,
.happy2 img {
    filter: grayscale(100%) drop-shadow(0 0 0 #000);
    transform: rotate(180deg);
    opacity: 0.7;
    animation: stFlicker 2s infinite ease-in-out;
}

/* ----------- FLICKER ANIMATION ----------- */
@keyframes stFlicker {
    0% {
        opacity: 0.4;
        filter: grayscale(100%) drop-shadow(0 0 0 #000);
    }
    5% {
        opacity: 1;
        filter: grayscale(0%) drop-shadow(0 0 8px #e50914);
    }
    10% {
        opacity: 0.3;
        filter: grayscale(100%) drop-shadow(0 0 0 #000);
    }
    15% {
        opacity: 1;
        filter: grayscale(0%) drop-shadow(0 0 12px #ff0022);
    }
    25% {
        opacity: 0.5;
        filter: grayscale(100%) drop-shadow(0 0 0 #000);
    }
    40% {
        opacity: 1;
        filter: grayscale(0%) drop-shadow(0 0 10px #e50914);
    }
    60% {
        opacity: 0.5;
        filter: grayscale(100%) drop-shadow(0 0 0 #000);
    }
    100% {
        opacity: 0.7;
        filter: grayscale(100%) drop-shadow(0 0 0 #000);
    }
}

/* ----------- INDIVIDUAL DELAYS ----------- */

/* HAPPY */
.Ha .happy:nth-child(1) img { animation-delay: 0s; }
.Ha .happy:nth-child(2) img { animation-delay: 0.2s; }
.Ha .happy:nth-child(3) img { animation-delay: 0.4s; }
.Ha .happy:nth-child(4) img { animation-delay: 0.6s; }
.Ha .happy:nth-child(5) img { animation-delay: 0.8s; }

/* BIRTHDAY */
.Bi .happy1:nth-child(1) img { animation-delay: 0.1s; }
.Bi .happy1:nth-child(2) img { animation-delay: 0.3s; }
.Bi .happy1:nth-child(3) img { animation-delay: 0.5s; }
.Bi .happy1:nth-child(4) img { animation-delay: 0.7s; }
.Bi .happy1:nth-child(5) img { animation-delay: 0.9s; }
.Bi .happy1:nth-child(6) img { animation-delay: 1.1s; }
.Bi .happy1:nth-child(7) img { animation-delay: 1.3s; }
.Bi .happy1:nth-child(8) img { animation-delay: 1.5s; }

/* BABY */
.Ba .happy2:nth-child(1) img { animation-delay: 0.2s; }
.Ba .happy2:nth-child(2) img { animation-delay: 0.4s; }
.Ba .happy2:nth-child(3) img { animation-delay: 0.6s; }
.Ba .happy2:nth-child(4) img { animation-delay: 0.8s; }




.play-button {
    background-color: #e50914;
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    cursor: pointer;
    transition: 0.3s;
}

.play-button:hover {
    background-color: #b20710;
    transform: scale(1.05);
}

.loveBtn {
    background-color: #e50914;
    color: white;
    padding: 12px 25px;
    margin: 10px;
    border: none;
    border-radius: 10px;
    font-size: 22px;
    cursor: pointer;
    transition: 0.3s;
}

.loveBtn:hover {
    background-color: #b20710;
    transform: scale(1.05);
}






/* ---------------------------------------------------
   RESPONSIVE DESIGN FOR ALL SCREENS
--------------------------------------------------- */

/* Medium Screens (Tablets, small laptops) */
@media (max-width: 1024px) {
    .happy, .happy1, .happy2 {
        font-size: 70px;
    }

    img {
        height: 30px;
    }

    .Ha, .Bi, .Ba {
        gap: 6px;
    }

    h1 {
        font-size: 32px !important;
    }
}


/* Mobile Screens */
@media (max-width: 768px) {
    .happy, .happy1, .happy2 {
        font-size: 55px;
        letter-spacing: 3px;
    }

    img {
        height: 25px;
    }

    .Ha, .Bi, .Ba {
        gap: 5px;
        flex-wrap: wrap;   /* allow shifting to next line if small screen */
    }

    h1 {
        font-size: 28px !important;
    }

    .loveBtn {
        font-size: 18px;
        padding: 10px 20px;
    }
}


/* Very Small Phones (below 480px) */
@media (max-width: 480px) {
    .happy, .happy1, .happy2 {
        font-size: 40px;
        letter-spacing: 2px;
    }

    img {
        height: 20px;
    }

    .Ha, .Bi, .Ba {
        gap: 4px;
        flex-wrap: wrap;
    }

    h1 {
        font-size: 24px !important;
    }

    .loveBtn {
        font-size: 16px;
        padding: 8px 18px;
        border-radius: 8px;
    }

    body {
        padding: 10px;
    }
}