body { 
    margin: 0; 
    font-family: system-ui, sans-serif; 
    display: flex; 
    height: 100vh; 
}

#sidebar-layout { 
    width: 280px; 
    background: #222; 
    color: #fff; 
    padding: 1rem; 
    box-sizing: border-box; 
    overflow-y: auto; 
}

#sidebar-menu { 
    display: flex; 
    flex-direction: column; 
    gap: 0.5rem; 
}

.sidebar-link { 
    background: #333; 
    color: #fff; 
    border: none; 
    padding: 0.75rem; 
    text-align: left; 
    cursor: pointer; 
    border-radius: 4px; 
    transition: background 0.2s; 
}

.sidebar-link:hover, .sidebar-link.active { 
    background: #007acc; 
}

#main-content { 
    flex: 1; 
    padding: 2rem; 
    overflow-y: auto; 
    background: #f5f5f5; 
    scroll-behavior: smooth; 
}

.jump-nav-bar { 
    background: #fff; 
    padding: 1rem; 
    border-radius: 6px; 
    margin-bottom: 2rem; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.05); 
    display: flex; 
    gap: 1.5rem; 
    align-items: center; 
}

.jump-nav-bar span { 
    font-weight: bold; 
    color: #555; 
}

.jump-link { 
    color: #007acc; 
    text-decoration: none; 
    font-weight: 500; 
}

.jump-link:hover { 
    text-decoration: underline; 
}

.gallery-section { 
    scroll-margin-top: 1.5rem; 
    margin-bottom: 3rem; 
}

.media-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); 
    gap: 1.5rem; 
    margin-top: 1rem; 
}

.media-card { 
    background: white; 
    padding: 1rem; 
    border-radius: 6px; 
    box-shadow: 0 2px 4px rgba(0,0,0,0.05); 
    display: flex; 
    flex-direction: column; 
    align-items: flex-start; 
    justify-content: flex-start; 
    box-sizing: border-box; 
    width: 100%;
    border: 2px solid transparent; 
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    position: relative;
}

.media-card.image-card {
    cursor: pointer;
}

.media-card.image-card:hover {
    border-color: #007acc; 
    box-shadow: 0 4px 12px rgba(0, 122, 204, 0.15);
}

.media-preview-box { 
    width: 100%; 
    height: 160px;
    border-radius: 4px; 
    background: #1e1e1e; 
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden; 
}

.media-preview-box img { 
    max-width: 100%; 
    max-height: 100%; 
    object-fit: contain;
    display: block; 
}

.media-details {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-top: 0.5rem;
    box-sizing: border-box;
    gap: 0.5rem;
}

.media-filename { 
    display: block; 
    font-size: 0.85rem; 
    word-break: break-all; 
    color: #333; 
    font-weight: bold; 
    flex: 1;
}

.copy-link-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #888;
    transition: color 0.15s ease, background 0.15s ease;
    flex-shrink: 0;
}

.copy-link-btn:hover {
    color: #007acc;
    background: #eef6fc;
}

.copy-link-btn.copied {
    color: #28a745;
}

.copy-link-btn svg {
    width: 16px;
    height: 16px;
    display: block;
}

.error { 
    color: #d9534f; 
    font-weight: bold; 
    font-size: 0.9rem; 
}

.media-card.sound-card {
    min-height: auto;
    height: 100%;
}

midi-player, midi-visualizer { 
    display: block !important; 
    width: 100% !important; 
    box-sizing: border-box; 
}

midi-player {
    margin-top: 0.25rem;
}

midi-visualizer { 
    min-height: 100px; 
    background: #ffffff; 
    border: 1px solid #dddddd; 
    border-radius: 4px; 
    margin-top: 0.5rem; 
    overflow-x: auto; 
}

midi-player::part(control-panel) { 
    background: #ffffff; 
    border: 1px solid #ddd; 
    border-radius: 4px; 
}

midi-player::part(play-button), midi-player::part(current-time) { 
    color: #007acc; 
}

midi-player::part(timeline) { 
    --midi-player-player-color: #007acc; 
}

midi-visualizer rect.note { 
    fill: #e1f0fc !important; 
    stroke: #b3d7f7 !important; 
    stroke-width: 1px !important; 
    opacity: 0.5 !important; 
}

midi-visualizer rect.note.active { 
    fill: #005a9e !important; 
    stroke: #002d50 !important; 
    stroke-width: 1.5px !important; 
    opacity: 1 !important; 
  }

@keyframes linkHighlightGlow {
    0% { border-color: transparent; box-shadow: 0 0 0 rgba(0, 122, 204, 0); }
    30% { border-color: #007acc; box-shadow: 0 0 20px rgba(0, 122, 204, 0.6); }
    70% { border-color: #007acc; box-shadow: 0 0 20px rgba(0, 122, 204, 0.6); }
    100% { border-color: #007acc; box-shadow: 0 4px 12px rgba(0, 122, 204, 0.15); }
}

.media-card.deep-linked-highlight {
    animation: linkHighlightGlow 3s ease-in-out forwards;
}

.gallery-footer { 
    margin-top: 4rem; 
    padding-top: 1.5rem; 
    border-top: 1px solid #ddd; 
    text-align: center; 
    padding-bottom: 2rem; 
}

.back-to-top-btn { 
    display: inline-block; 
    padding: 0.5rem 1rem; 
    background: #e0e0e0; 
    color: #333; 
    text-decoration: none; 
    border-radius: 4px; 
    font-size: 0.9rem; 
    transition: background 0.2s; 
}

.back-to-top-btn:hover { 
    background: #d0d0d0; 
}

#lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.9);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    -webkit-user-select: none;
    user-select: none;
}

#lightbox-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: grab;
}

#lightbox-container:active {
    cursor: grabbing;
}

.lightbox-controls-group {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    display: flex;
    gap: 0.5rem;
    align-items: center;
    z-index: 10001;
}

#lightbox-header {
    color: #fff;
    font-size: 1.1rem;
    background: rgba(0, 0, 0, 0.6);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.lightbox-action-btn {
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    border: none;
    border-radius: 6px;
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease, color 0.15s ease;
}

.lightbox-action-btn:hover {
    background: #007acc;
    color: #fff;
}

#lightbox-zoom-actual {
    font-size: 0.85rem;
    font-weight: bold;
}

#lightbox-img {
    position: relative;
    max-width: none !important; 
    max-height: none !important;
    width: auto !important;
    height: auto !important;
    transform-origin: center center;
    image-rendering: pixelated;
    image-rendering: -webkit-optimize-contrast;
     image-rendering: crisp-edges;
    transition: transform 0.05s ease-out;
    will-change: transform;
}

#lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 6.5rem;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 10001;
}

#lightbox-close:hover {
    background: rgba(255, 255, 255, 0.4);
}

#lightbox-counter {
    color: #007acc;
    font-weight: bold;
    margin-left: 0.75rem;
}

.lightbox-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 3.5rem;
    height: 3.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
    z-index: 10001;
    -webkit-user-select: none;
    user-select: none;
}

.lightbox-nav-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    color: #007acc;
}

#lightbox-prev {
    left: 1.5rem;
}

#lightbox-next {
    right: 1.5rem;
}