body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #1a1a1a;
    color: #e0e0e0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #2c2c2c;
    color: #fff;
    padding: 1rem 2rem;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

header h1 {
    margin: 0;
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
}

header nav {
    margin-top: 0.5rem;
}

header nav a {
    color: #4db8ff;
    text-decoration: none;
    margin: 0 1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

header nav a:hover {
    color: #80d4ff;
}

main {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    width: 100%;
    box-sizing: border-box;
}

.viewer-page-content.animated-viewer-content {
    background-color: rgba(var(--bg-secondary-rgb, 28, 28, 43), 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid rgba(var(--accent-primary-rgb, 255, 215, 0), 0.3);
    box-shadow: 0 8px 25px rgba(0,0,0,0.4);
    width: 100%;
    max-width: 1000px;
    margin: 1.5rem auto;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.viewer-page-content.animated-viewer-content h1 {
    font-family: 'Orbitron', sans-serif;
    color: var(--accent-primary);
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

#controlsContainer {
    background-color: rgba(var(--bg-accent-rgb, 42, 42, 63), 0.7);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    width: 100%;
    max-width: 800px;
    border: 1px solid rgba(var(--accent-primary-rgb, 255, 215, 0), 0.2);
}

#modeSelectorContainer {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem;
    background-color: rgba(var(--bg-primary-rgb, 10, 10, 20), 0.5);
    border-radius: 6px;
    justify-content: center;
}

#modeSelectorContainer label {
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

#modeSelectorContainer label:hover {
    color: var(--text-primary);
}

#modeSelectorContainer input[type="radio"] {
    accent-color: var(--accent-primary);
}

#individualAnimationControls, 
#allAnimationControls {
    padding: 0.75rem;
    border-top: 1px solid rgba(var(--accent-primary-rgb, 255, 215, 0), 0.15);
    margin-top: 0.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

#controlsContainer > div:first-child:not(#modeSelectorContainer) {
    display: flex; 
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 0.5rem;
}

#controlsContainer label {
    font-weight: 600;
    color: var(--text-secondary);
    margin-right: 0.25rem;
    font-size: 0.9rem;
    flex-shrink: 0;
}

#modelSelect, #animationSelect {
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--accent-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    flex-grow: 1;
    min-width: 150px;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
}

#playPauseBtn {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
}

#masterPlayAllBtn {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    background-color: #28a745;
    border-color: #28a745;
    color: white;
}

#masterPlayAllBtn:hover {
    background-color: #218838;
}

#pauseAllBtn {
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    background-color: #dc3545;
    border-color: #dc3545;
    color: white;
}

#pauseAllBtn:hover {
    background-color: #c82333;
}

#timeSlider, #masterTimeSlider {
    flex-grow: 2;
    margin: 0 0.25rem;
    cursor: pointer;
    height: 10px;
    min-width: 100px;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    cursor: pointer;
    width: 100%;
}

input[type="range"]::-webkit-slider-runnable-track {
    background: rgba(var(--text-secondary-rgb, 192, 192, 192), 0.5);
    height: 6px;
    border-radius: 3px;
}

input[type="range"]::-moz-range-track {
    background: rgba(var(--text-secondary-rgb, 192, 192, 192), 0.5);
    height: 6px;
    border-radius: 3px;
    border: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    margin-top: -4px;
    background-color: var(--accent-primary);
    height: 14px;
    width: 14px;
    border-radius: 50%;
    border: 1px solid var(--bg-primary);
}

input[type="range"]::-moz-range-thumb {
    background-color: var(--accent-primary);
    height: 12px;
    width: 12px;
    border-radius: 50%;
    border: 1px solid var(--bg-primary);
}

#timeDisplay, #masterTimeDisplay {
    font-size: 0.85em;
    min-width: 70px; 
    text-align: right;
    color: var(--text-secondary);
    white-space: nowrap;
}

#loadingIndicator {
    color: var(--accent-secondary);
    font-style: italic;
    text-align: center;
    width: 100%;
    padding: 0.5rem 0;
}

#viewerContainer {
    width: 100%;
    height: 55vh; 
    min-height: 400px;
    background-color: rgba(var(--bg-primary-rgb, 10, 10, 20), 0.0);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(var(--accent-primary-rgb, 255, 215, 0), 0.1);
}

#modelCanvas {
    display: block; 
    width: 100% !important; 
    height: 100% !important;
}

footer {
    background-color: #2c2c2c;
    color: #aaa;
    text-align: center;
    padding: 1rem;
    font-size: 0.9rem;
    margin-top: auto;
}

@media (max-width: 768px) {
    .viewer-page-content.animated-viewer-content h1 {
        font-size: 1.5rem;
    }
    #controlsContainer {
        padding: 0.75rem;
    }
    #controlsContainer > div:first-child:not(#modeSelectorContainer),
    #individualAnimationControls,
    #allAnimationControls {
        flex-direction: column;
        align-items: stretch;
    }
    #modelSelect, #animationSelect,
    #playPauseBtn, #masterPlayAllBtn, #pauseAllBtn  {
        width: 100%;
        margin-left: 0; 
        margin-right: 0;
    }
    #timeSlider, #masterTimeSlider {
        width: calc(100% - 0.5rem);
        margin: 0.5rem 0.25rem;
    }
    #viewerContainer {
        height: 45vh;
        min-height: 300px;
    }
    #masterPlaybackControls {
        flex-direction: column;
        align-items: stretch;
    }
    #masterTimeDisplay {
        text-align: left;
        margin-top: 0.25rem;
    }
}

#masterPlaybackControls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.5rem;
    background-color: rgba(var(--bg-primary-rgb, 10, 10, 20), 0.3);
    border-radius: 6px;
}

#masterPlaybackControls label {
    flex-shrink: 0;
}

:root {
    --bg-primary-rgb: 10, 10, 20;
    --bg-secondary-rgb: 28, 28, 43;
    --bg-accent-rgb: 42, 42, 63;
    --text-primary: #EAEAEA;
    --text-secondary: #C0C0C0;
    --text-secondary-rgb: 192, 192, 192;
    --accent-primary: #FFD700;
    --accent-primary-rgb: 255, 215, 0;
    --accent-secondary: #FFA500;
}