.video-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -2;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.video-background video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.support-panel {
    text-align: center;
    margin-bottom: 30px;
    animation: float 3s ease-in-out infinite;
}

.support-panel img {
    max-width: 50%;
    height: auto;
    filter: drop-shadow(0 0 30px rgba(255, 255, 255, 0.133))
    drop-shadow(0 0 50px rgba(255, 255, 255, 0.118))
    drop-shadow(0 0 70px rgba(255, 255, 255, 0.111));
}

@keyframes float {
    0%, 100% {
        transform: translateY(0); 
    }
    50% {
        transform: translateY(-10px); 
    }
}
    body {
        margin: 0;
        min-height: calc(100 * var(--vh, 1vh));
        padding: 20px;
        overflow: auto;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        }
        
        .grid {
        position: relative;
        margin: 0 auto;
        max-width: 1200px;
        width: 100%;
        display: flex;
        justify-content: center;
        }
        
        .item {
        position: absolute;
        width: 380px;
        margin: 10px;
        z-index: 1;
        }
        
        .item.muuri-item-dragging {
        z-index: 3;
        }
        
        .item.muuri-item-releasing {
        z-index: 2;
        }
        
        
        .window-muuri {
        width: 100%;
        background: transparent;
        border: 2px solid #97deff;
        border-radius: 4px;
        box-shadow: 4px 4px 0 rgba(225, 246, 255, 0.5);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        }
        
        .window-muuri-header {
        background: #80aaff;
        padding: 8px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: move;
        }
        
        .window-muuri-controls {
        display: flex;
        gap: 6px;
        }
        
        .material-icons {
        font-size: 18px;
        color: white;
        cursor: pointer;
        }
        
        .drag-handle .material-icons {
        color: white;
        font-size: 20px;
        }
        
        .window-muuri-content {
        padding: 20px;
        font-family: 'Press Start 2P', cursive;
        color: #ffffff;
        }
        
        .preview-image {
        width: 100%;
        height: 160px;
        object-fit: contain;
        }
        
        .title {
        font-size: 16px;
        margin-bottom: 20px;
        }
        
        .date {
        font-size: 12px;
        margin-bottom: 15px;
        color: #ffffff;
        font-family: 'ZHFont', sans-serif;
        }
        
        .description {
        font-size: 12px;
        line-height: 1.6;
        border-left: 2px solid #ffffff;
        padding-left: 10px;
        font-family: 'ZHFont', sans-serif;
        font-weight: lighter;
        margin: 15px 0;
        }
        
        .footer {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-top: 20px;
        font-family: 'ZHFont', sans-serif;
        font-weight: bold;
        font-size: 12px;
        }
        
        .tag {
        color: #89CFF0;
        }
        
        .link {
        color: #89CFF0;
        text-decoration: none;
        }
        
        .link:hover {
        text-decoration: underline;
        }
        
        .filter-controls {
        margin: 20px auto;
        padding: 25px;
        background: rgba(128, 170, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 8px;
        border: 2px solid #97deff;
        box-shadow: 4px 4px 0 rgba(225, 246, 255, 0.5);
        display: flex;
        gap: 30px;
        align-items: flex-start;
        max-width: 800px;
        position: relative;
        }
        
        .filter-group {
        display: flex;
        flex-direction: column;
        gap: 12px;
        flex: 1;
        }
        
        .filter-group label {
        font-family: 'Press Start 2P', cursive;
        font-size: 10px;
        color: #ffffff;
        text-shadow: 2px 2px 0 rgba(128, 170, 255, 0.5);
        letter-spacing: 1px;
        }
        
        .filter-group::before {
        content: '▶';
        color: #97deff;
        font-size: 12px;
        position: absolute;
        margin-left: -20px;
        margin-top: 25px;
        }
        
        .category-options {
        display: flex;
        flex-direction: column;
        gap: 8px;
        }
        
        .option-box {
        padding: 8px 12px;
        border: 2px solid #97deff;
        border-radius: 4px;
        background: rgba(128, 170, 255, 0.07);
        color: #ffffff;
        font-family: 'DepartureMono', monospace;
        cursor: pointer;
        transition: all 0.3s ease;
        box-shadow: 2px 2px 0 rgba(225, 246, 255, 0.3);
        display: block;
        width: 100%;
        text-align: left;
        appearance: none;
        -webkit-appearance: none;
        -moz-appearance: none;
        }
        
        .option-box:hover {
        border-color: #80aaff;
        transform: translateX(2px);
        }
        
        .option-box.selected {
        background: rgba(128, 170, 255, 0.3);
        border-color: #80aaff;
        box-shadow: 4px 4px 0 rgba(225, 246, 255, 0.5);
        }
        
        input {
        padding: 12px 16px;
        border: 2px solid #97deff;
        border-radius: 4px;
        background: rgba(128, 170, 255, 0.07);
        color: #ffffff;
        font-family: 'DepartureMono', monospace;
        outline: none;
        transition: all 0.3s ease;
        box-shadow: 2px 2px 0 rgba(225, 246, 255, 0.3);
        }
        
        input:focus {
        border-color: #80aaff;
        box-shadow: 4px 4px 0 rgba(225, 246, 255, 0.5);
        transform: translateY(-2px);
        }
        
        input:hover {
        border-color: #80aaff;
        transform: translateY(-1px);
        }
        
        input::placeholder {
        color: rgba(255, 255, 255, 0.3);
        font-style: italic;
        }
        
        #category-filter {
        position: absolute;
        opacity: 0;
        pointer-events: none;
        }
        
        .filter-controls::before,
        .filter-controls::after {
        content: '';
        position: absolute;
        width: 6px;
        height: 6px;
        background: #97deff;
        }
        
        .filter-controls::before {
        top: -2px;
        left: -2px;
        }
        
        .filter-controls::after {
        bottom: -2px;
        right: -2px;
        }
        @media (max-width: 768px) {
          body {
            padding: 10px;
          }
        
          .grid {
            flex-wrap: wrap;
            justify-content: center; 
          }
        
          .item {
            width: 90%;
            max-width: 400px;
            margin: 10px auto;
          }
        
          .window-muuri-header {
            padding: 10px; 
            flex-wrap: wrap;
            gap: 5px;
          }
        
          .window-muuri-content {
            padding: 15px;
            font-size: 14px; 
          }
        
          .preview-image {
            height: 140px; 
          }
        
          .title {
            font-size: 18px;
            text-align: center;
            margin-bottom: 10px;
          }
        
          .description {
            font-size: 12px;
            line-height: 1.5;
            padding-left: 8px;
          }
        
          .footer {
            font-size: 12px;
            margin-top: 15px;
            flex-wrap: wrap; 
            gap: 10px;
          }
        
          .filter-controls {
            padding: 15px;
            gap: 20px;
            flex-wrap: wrap; 
          }
        
          .filter-group {
            gap: 10px;
          }
        
          input {
            font-size: 14px;
            padding: 10px;
          }
        
          .option-box {
            padding: 10px;
            font-size: 12px;
          }
        }
        
        @media (max-width: 480px) {
          .grid {
            gap: 10px; 
          }
        
          .item {
            width: 95%;
            max-width: 320px;
          }
        
          .window-muuri {
            border-width: 1px; 
          }
        
          .window-muuri-header {
            padding: 8px; 
          }
        
          .material-icons {
            font-size: 18px; 
          }
        
          .window-muuri-content {
            padding: 12px;
            font-size: 12px;
          }
        
          .title {
            font-size: 16px; 
          }
        
          .description {
            font-size: 11px; 
            padding-left: 5px;
          }
        
          .footer {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
          }
        
          .filter-controls {
            padding: 12px;
            gap: 15px;
          }
        
          input {
            padding: 8px;
            font-size: 12px; 
          }
        
          .option-box {
            padding: 8px;
            font-size: 11px; 
          }
        }

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: #7cc6ffcc;
}

::-webkit-scrollbar-thumb {
  background: #7cc6ffcc;

}

::-webkit-scrollbar-thumb:hover {
  background: #7db8ff;
}

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