.body{
    background-color: black;
    z-index: -2;
  }
.video-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.video-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.logo-panel {
    text-align: center;
    margin-bottom: 30px;
    opacity: 0;
    animation: fade-in-black 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.8s forwards;
    transition: 
        transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
        filter 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo-panel img {
    max-width: 50%;
    height: auto;
    filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.1))
            drop-shadow(0 0 40px rgba(255, 255, 255, 0.08))
            drop-shadow(0 0 60px rgba(255, 255, 255, 0.06));
    transition: 
        transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
        filter 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.logo-panel img:hover {
    filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.3))
            drop-shadow(0 0 50px rgba(255, 255, 255, 0.25))
            drop-shadow(0 0 70px rgba(255, 255, 255, 0.4));
}

@keyframes fade-in-black {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.music-control {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 10;
    cursor: pointer;
    width: 70px;
    height: 70px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}

.music-icon {
    width: 70px;
    height: 70px;
    transition: transform 0.3s ease, filter 0.3s ease;
}

.music-control:hover .music-icon {
    transform: scale(1.1);
}

.music-control .music-icon {
    content: url('/assets/images/icons/special/music-icon.png');
}

.music-control:hover .music-icon {
    content: url('/assets/images/icons/special/music-icon-hover.png');
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.7))
            drop-shadow(0 0 20px rgba(255, 255, 255, 0.5))
            drop-shadow(0 0 30px rgba(255, 255, 255, 0.3));
    animation: music-icon-glow 2s infinite alternate ease-in-out;
}

.music-control.muted .music-icon {
    content: url('/assets/images/icons/special/music-icon-mute.png');
}

@keyframes music-icon-glow {
    0% {
        filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5))
                drop-shadow(0 0 20px rgba(255, 255, 255, 0.3))
                drop-shadow(0 0 30px rgba(255, 255, 255, 0.2));
    }
    100% {
        filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.7))
                drop-shadow(0 0 25px rgba(255, 255, 255, 0.5))
                drop-shadow(0 0 35px rgba(255, 255, 255, 0.4));
    }
}
.enter {
    text-align: center;
    color: #fff;
    font-size: 30px;
    margin-top: 30px !important;
    text-shadow: 0 0 10px rgba(255,255,255,0.5);
    font-family: 'ZHFont', sans-serif;
    cursor: pointer; 
    user-select: none; 
    -webkit-tap-highlight-color: transparent; 
    animation: fade-in-text 3s ease forwards;
}

@keyframes fade-in-text {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.enter-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 400px;
}

.enter-arrow {
    width: 300px;
    height: auto;
    margin: 0 10px;
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.left-arrow {
    transform: translateX(-20px) scaleX(-1);
}

.enter-arrow:hover {
    filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.7))
            drop-shadow(0 0 25px rgba(255, 255, 255, 0.5))
            drop-shadow(0 0 35px rgba(255, 255, 255, 0.4));
    transform: translateX(0) scale(1.1);
}

.enter-container .enter {
    margin-top: 0;
}

@keyframes fade-in-arrows {
    0% {
        opacity: 0;
        transform: translateX(20px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.left-arrow {
    animation: fade-in-arrows 3s ease 1s forwards;
}

.right-arrow {
    animation: fade-in-arrows 3s ease 1s forwards;
}
.menu-container {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    z-index: 10;
    opacity: 0;
    animation: fade-in-menu 1s ease 1s forwards;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 10px;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.menu-item:hover {
    filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.27))
            drop-shadow(0 0 50px rgba(255, 255, 255, 0.23))
            drop-shadow(0 0 70px rgba(255, 255, 255, 0.35));
}

.menu-item img {
    width: 34px;
    height: 34px;
}

.menu-item span {
    color: white;
    font-family: 'ZHFont', sans-serif;
    font-size: 14px;
}

.vertical-layout {
    flex-direction: column;
    text-align: center;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.137);
    backdrop-filter: blur(8px);
    z-index: 100;
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-panel {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.9);
    background: rgba(255, 255, 255, 0.199);
    backdrop-filter: blur(10px);
    padding: 30px;
    border-radius: 15px;
    min-width: 300px;
    max-width: 80%;
    max-height: 80vh;
    overflow-y: auto;
    color: white;
    font-family: 'ZHFont', sans-serif;
    opacity: 0;
    transition: all 0.3s ease;
}

.modal-panel.active {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

.modal-overlay.active {
    display: block;
    opacity: 1;
}

.close-button {
    position: absolute;
    top: 15px;
    right: 15px;
    color: white;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.close-button:hover {
    transform: scale(1.1);
}

@keyframes fade-in-menu {
    0% {
        opacity: 0;
        transform: translateX(20px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

.menu-item:nth-child(1) { animation-delay: 1.2s; }
.menu-item:nth-child(2) { animation-delay: 1.4s; }
.menu-item:nth-child(3) { animation-delay: 1.6s; }
.menu-item:nth-child(4) { animation-delay: 1.8s; }

.settings-container {
    padding: 20px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
}

.setting-item label {
    margin-right: 10px;
}

.setting-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.update-alert-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.update-alert-icon {
    position: absolute;
    width: 60px !important;
    height: 60px !important;
    left: -70px;
    top: 50px;
    animation: breathing-pulse 2s infinite ease-in-out;
    opacity: 1;
    transition: opacity 0.3s ease;
}

@keyframes breathing-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

.menu-item.updates-clicked .update-alert-icon {
    opacity: 0;
    animation: none;
}

body ::selection {
    background: #91ceff;
  }