/* Base styles */
body {
    margin: 0;
    overflow-x: hidden;
    height: 2000vh; /* Long scrollable page */
    background: linear-gradient(#D8BFD8, #FFD700, #4682B4); /* Purple to gold to blue */
    font-family: 'Amatic SC', cursive;
    -webkit-tap-highlight-color: transparent; /* Remove tap highlight on mobile */
    overscroll-behavior: contain; /* Prevent overscroll effects */
}

#container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    touch-action: none; /* Prevent default touch behaviors */
}

/* Button styles */
#night-mode, #music-toggle, #volume-up {
    position: fixed;
    padding: 12px 18px;
    z-index: 10;
    background: rgba(255, 215, 0, 0.7);
    border: 2px solid #4B0082;
    border-radius: 20px;
    cursor: pointer;
    font-family: 'Amatic SC', cursive;
    font-size: 18px;
    color: #4B0082;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    -webkit-tap-highlight-color: transparent;
    min-width: 100px; /* Ensure buttons are large enough for touch */
    -webkit-appearance: none; /* Remove default styling on iOS */
    appearance: none; /* Standard property for cross-browser compatibility */
    touch-action: manipulation; /* Improve touch response */
}

#night-mode {
    top: 20px;
    right: 20px;
}

#music-toggle {
    top: 20px;
    left: 20px;
}

#volume-up {
    top: 20px;
    left: 140px;
}

#night-mode:hover, #music-toggle:hover, #volume-up:hover {
    background: rgba(255, 215, 0, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

#night-mode:active, #music-toggle:active, #volume-up:active {
    transform: translateY(1px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

/* Image styles */
.photo-pair {
    position: fixed;
    z-index: 5;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0;
    transition: opacity 1s ease;
}

.left-pic, .right-pic {
    position: absolute;
    width: 200px;
    height: auto;
    opacity: 0;
    transition: opacity 1s ease, transform 1s ease;
}

.left-pic {
    left: -250px;
    top: 20%;
    transform: translateX(0);
}

.right-pic {
    right: -250px;
    top: 20%;
    transform: translateX(0);
}

/* Active state for photo pairs */
.photo-pair.active .left-pic {
    opacity: 1;
    transform: translateX(250px);
}

.photo-pair.active .right-pic {
    opacity: 1;
    transform: translateX(-250px);
}

.photo-pair.active {
    opacity: 1;
}

/* Position variations for each photo pair */
#photo-pair-1 .left-pic { top: 15%; }
#photo-pair-1 .right-pic { top: 15%; }
#photo-pair-1 .pair-text { top: 30%; }

#photo-pair-2 .left-pic { top: 25%; }
#photo-pair-2 .right-pic { top: 25%; }
#photo-pair-2 .pair-text { top: 40%; }

#photo-pair-3 .left-pic { top: 35%; }
#photo-pair-3 .right-pic { top: 35%; }
#photo-pair-3 .pair-text { top: 50%; }

#photo-pair-4 .left-pic { top: 45%; }
#photo-pair-4 .right-pic { top: 45%; }
#photo-pair-4 .pair-text { top: 60%; }

/* Scroll text */
#scroll-text {
    position: fixed;
    top: -100px;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-family: 'Amatic SC', cursive;
    font-size: 60px;
    color: #FFD700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.7), 2px 2px 4px #000;
    z-index: 15; /* Higher than photo pairs */
    opacity: 0;
    transition: all 1.2s ease;
    text-align: center;
    width: 100%;
    max-width: 800px;
    animation: glow 2s infinite alternate;
}

/* End video styles */
#end-video {
    position: fixed;
    top: -100px;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 30%; /* Reduced from 50% */
    max-width: 250px; /* Reduced from 400px */
    height: auto;
    z-index: 14;
    opacity: 0;
    transition: all 1.2s ease;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

#end-video.active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    top: 45%; /* Adjusted to cover the tower window */
}

#scroll-text.active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    top: calc(45% + 250px); /* Increased distance from video */
    margin-top: 0;
}

@keyframes glow {
    from {
        text-shadow: 0 0 10px rgba(255, 215, 0, 0.7), 0 0 20px rgba(255, 215, 0, 0.5), 2px 2px 4px #000;
    }
    to {
        text-shadow: 0 0 15px rgba(255, 215, 0, 0.9), 0 0 30px rgba(255, 215, 0, 0.7), 2px 2px 4px #000;
    }
}

/* Pair text styles */
.pair-text {
    position: absolute;
    left: 50%;
    top: 30%;
    transform: translate(-50%, -50%) scale(0);
    font-family: 'Amatic SC', cursive;
    font-size: 48px;
    color: #FFD700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    z-index: 10;
    opacity: 0;
    transition: all 1s ease;
    text-align: center;
    width: 80%;
    max-width: 600px;
    pointer-events: none;
}

.photo-pair.active .pair-text {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    transition-delay: 0.3s;
}

/* Media queries for responsive design */
/* Tablets */
@media screen and (max-width: 1024px) {
    #night-mode, #music-toggle {
        padding: 12px 15px; /* Slightly larger for better touch targets */
    }
    
    .left-pic, .right-pic {
        width: 150px;
    }
    
    #scroll-text {
        font-size: 40px;
        padding: 0 20px;
    }
    
    .pair-text {
        font-size: 40px;
    }
}

/* Large mobile phones */
@media screen and (max-width: 768px) {
    #night-mode, #music-toggle {
        padding: 12px 16px; /* Increased padding for better touch targets */
        font-size: 16px; /* Slightly larger font for better readability */
        min-width: 80px;
    }
    
    .left-pic, .right-pic {
        width: 120px;
    }
    
    #scroll-text {
        font-size: 36px;
        width: 85%;
        padding: 0 15px;
    }
    
    #photo-pair-1 .left-pic, #photo-pair-2 .left-pic, 
    #photo-pair-3 .left-pic, #photo-pair-4 .left-pic {
        left: -150px;
    }
    
    #photo-pair-1 .right-pic, #photo-pair-2 .right-pic,
    #photo-pair-3 .right-pic, #photo-pair-4 .right-pic {
        right: -150px;
    }
    
    .photo-pair.active .left-pic {
        transform: translateX(180px);
    }
    
    .photo-pair.active .right-pic {
        transform: translateX(-180px);
    }
    
    .pair-text {
        font-size: 36px;
        width: 90%;
    }
    
    #end-video {
        width: 40%;
        max-width: 200px;
    }
}

/* Medium mobile phones */
@media screen and (max-width: 480px) {
    #night-mode, #music-toggle {
        padding: 7px 10px;
        font-size: 14px;
        min-width: 70px;
    }
    
    #night-mode {
        top: 10px;
        right: 10px;
    }
    
    #music-toggle {
        top: 10px;
        left: 10px;
    }
    
    .left-pic, .right-pic {
        width: 100px;
    }
    
    #photo-pair-1 .left-pic, #photo-pair-2 .left-pic, 
    #photo-pair-3 .left-pic, #photo-pair-4 .left-pic {
        left: -120px;
    }
    
    #photo-pair-1 .right-pic, #photo-pair-2 .right-pic,
    #photo-pair-3 .right-pic, #photo-pair-4 .right-pic {
        right: -120px;
    }
    
    .photo-pair.active .left-pic {
        transform: translateX(130px);
    }
    
    .photo-pair.active .right-pic {
        transform: translateX(-130px);
    }
    
    #scroll-text {
        font-size: 32px;
        width: 80%;
        padding: 0 10px;
    }
    
    .pair-text {
        font-size: 30px;
        width: 95%;
    }
    
    #end-video {
        width: 50%;
        max-width: 180px;
    }
}

/* Small mobile phones */
@media screen and (max-width: 375px) {
    #night-mode, #music-toggle {
        padding: 6px 8px;
        font-size: 12px;
        min-width: 60px;
    }
    
    #night-mode {
        top: 8px;
        right: 8px;
    }
    
    #music-toggle {
        top: 8px;
        left: 8px;
    }
    
    .left-pic, .right-pic {
        width: 80px;
    }
    
    #photo-pair-1 .left-pic, #photo-pair-2 .left-pic, 
    #photo-pair-3 .left-pic, #photo-pair-4 .left-pic {
        left: -100px;
    }
    
    #photo-pair-1 .right-pic, #photo-pair-2 .right-pic,
    #photo-pair-3 .right-pic, #photo-pair-4 .right-pic {
        right: -100px;
    }
    
    .photo-pair.active .left-pic {
        transform: translateX(110px);
    }
    
    .photo-pair.active .right-pic {
        transform: translateX(-110px);
    }
    
    #scroll-text {
        font-size: 28px;
        width: 90%;
        padding: 0 8px;
    }
    
    .pair-text {
        font-size: 24px;
    }
}

/* Extra small mobile phones */
@media screen and (max-width: 320px) {
    #night-mode, #music-toggle {
        padding: 5px 7px;
        font-size: 11px;
        min-width: 50px;
    }
    
    .left-pic, .right-pic {
        width: 70px;
    }
    
    #photo-pair-1 .left-pic, #photo-pair-2 .left-pic, 
    #photo-pair-3 .left-pic, #photo-pair-4 .left-pic {
        left: -80px;
    }
    
    #photo-pair-1 .right-pic, #photo-pair-2 .right-pic,
    #photo-pair-3 .right-pic, #photo-pair-4 .right-pic {
        right: -80px;
    }
    
    .photo-pair.active .left-pic {
        transform: translateX(90px);
    }
    
    .photo-pair.active .right-pic {
        transform: translateX(-90px);
    }
    
    #scroll-text {
        font-size: 24px;
        padding: 0 5px;
    }
    
    .pair-text {
        font-size: 20px;
    }
}

/* Portrait orientation adjustments */
@media screen and (orientation: portrait) {
    .left-pic {
        top: 40%;
    }
    
    .right-pic {
        top: 60%;
    }
    
    #scroll-text {
        top: 20%;
    }
}

/* Landscape orientation on small height devices */
@media screen and (max-height: 500px) and (orientation: landscape) {
    #night-mode {
        top: 5px;
        right: 5px;
    }
    
    #music-toggle {
        top: 5px;
        left: 5px;
    }
    
    .left-pic, .right-pic {
        width: 80px;
    }
    
    .left-pic {
        top: 15%;
    }
    
    .right-pic {
        top: 15%;
    }
    
    #scroll-text {
        font-size: 24px;
        top: 10%;
    }
}

/* Touch device specific optimizations */
@media (hover: none) {
    #night-mode:hover, #music-toggle:hover {
        transform: none; /* Disable hover effects on touch devices */
        background: rgba(255, 215, 0, 0.8);
    }
    
    #night-mode:active, #music-toggle:active {
        transform: scale(0.98); /* Simple scale effect for touch */
        background: rgba(255, 215, 0, 0.9);
    }
    
    /* Increase tap target sizes */
    #night-mode, #music-toggle {
        padding: 14px 20px;
    }
    
    /* Fix for iOS/Safari display issues */
    #container {
        width: 100vw;
        height: 100vh;
        position: fixed;
        top: 0;
        left: 0;
    }
}

/* Smaller screens */
@media (max-width: 768px) {
    /* Normal mobile styles only */
}