* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark theme variables */
    --color-primary: #4CAF50;    /* Green */
    --color-secondary: #FFD700;  /* Yellow */
    --color-dark: #121212;       /* Very dark gray for main background */
    --color-darker: #0A0A0A;     /* Even darker for contrasts */
    --color-gray-dark: #1E1E1E;  /* Dark gray for cards */
    --color-gray: #2D2D2D;       /* Medium dark gray for hover states */
    --color-gray-light: #404040; /* Lighter gray for borders */
    --color-text: #E0E0E0;       /* Light gray for text */
    --shadow: 0 2px 4px rgba(0,0,0,0.3);
}

/* Light theme variables */
[data-theme="light"] {
    --color-primary: #2E7D32;    /* Darker Green */
    --color-secondary: #FFA000;  /* Amber */
    --color-dark: #FFFFFF;       /* White for main background */
    --color-darker: #F5F5F5;     /* Light gray for contrasts */
    --color-gray-dark: #FFFFFF;  /* White for cards */
    --color-gray: #EEEEEE;       /* Light gray for hover states */
    --color-gray-light: #E0E0E0; /* Medium gray for borders */
    --color-text: #212121;       /* Very dark gray for text */
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--color-dark);
    color: var(--color-text);
}

.hidden {
    display: none;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    padding: 0.5rem 0;
    display: flex;
    /* justify-content: space-between; */
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

h1 {
    font-size: 1.8rem;
    color: var(--color-text);
}

select {
    padding: 0.5rem;
    font-size: 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: white;
    min-width: 200px;
}

main {
    width: 100%;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

#viewer-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    /* margin: 0.5rem; */
    max-height: calc(100vh - 150px); /* Account for header, margins, and nav */
}

.viewer-header {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 0.5rem;
}

.viewer-header h2 {
    margin: 0;
    padding: 0;
    color: var(--color-text);
    text-align: center;
    font-size: 1.6rem;
    /* text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 4px; */
}

/* .viewer-header .nav-button {
    min-width: 48px;
    min-height: 48px;
    font-size: 30px;
    padding: 0;
    margin: 0;
} */

#scene-container {
    background-color: var(--color-gray-dark);
    border-radius: 8px;
    box-shadow: var(--shadow);
    position: relative;
    width: 100%;
    max-width: calc(100vh - 150px); /* Match max-height */
    margin: 0 auto;
    height: 0;
    padding-bottom: min(100%, calc(100vh - 150px)); /* Use the smaller value */
    margin-bottom: 64px; /* Space for nav bar */
    filter: drop-shadow(1px 1px 2px var(--color-text));

}

#scene-container canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}


/* Navigation bar styles */
.polyhedron-nav {
    position: absolute;
    bottom: -64px; /* Position below the canvas */
    left: 0;
    right: 0;
    min-height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    border-radius: 8px;
    opacity: 1;
    transform: translateY(0);
    flex-wrap: nowrap;
}

.nav-arrow, .nav-button {
    min-width: 48px;
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-gray);
    border: none;
    border-radius: 4px;
    color: var(--color-text);
    cursor: pointer;
    font-size: 30px;
    transition: background-color 0.2s;
}

.nav-arrow:hover, .nav-button:hover {
    background-color: var(--color-secondary);
    color: var(--color-dark);
}

.nav-arrow:disabled {
    opacity: 0.5;
    background-color: var(--color-gray);
    color: var(--color-text);
    cursor: not-allowed;
}

#settings-panel {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background-color: var(--color-gray-dark);
    border: 1px solid var(--color-gray-light);
    color: var(--color-text);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: var(--shadow);
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 100;
}

#settings-panel.hidden {
    display: none;
}

#settings-panel h3 {
    color: var(--color-text);
    margin-bottom: 0.8rem;
    font-size: 1rem;
}

.settings-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.settings-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text);
    cursor: pointer;
}

.settings-group input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--color-primary);
}

#info-panel {
    position: absolute;
    bottom: 10px;
    right: 10px;
    max-height: calc(100% - 68px); /* 48px nav bar + 20px padding */
    width: 300px;
    background-color: var(--color-gray-dark);
    border: 1px solid var(--color-gray-light);
    overflow-y: auto;
    color: var(--color-text);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: var(--shadow);
}

#info-panel.hidden {
    display: none;
}

#nav-scroll-container {
    flex: 1;
    height: 4px;
    background-color: var(--color-gray);
    border-radius: 2px;
    position: relative;
    cursor: pointer;
}

#nav-scroll-handle {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 25px;
    height: 25px;
    background-color: var(--color-secondary);
    border-radius: 50%;
    cursor: grab;
    transition: width 0.2s, height 0.2s, background-color 0.2s;
}

#nav-scroll-handle:active {
    cursor: grabbing;
    background-color: var(--color-secondary);
}

#stats {
    font-size: 0.9rem;
    line-height: 1.5;
}

.stats-section-title {
    margin: 0.75rem 0 0.25rem 0;
    font-size: 1rem;
    color: var(--color-text);
}

.stats-section-title:first-child {
    margin-top: 0;
}

.polyhedron-stats {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-gray-dark);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--color-gray-light);
}

.polyhedron-stats th,
.polyhedron-stats td {
    padding: 0.25rem;
    text-align: center;
    border: 1px solid var(--color-gray-light);
    color: var(--color-text);
}

.polyhedron-stats th {
    background-color: var(--color-gray);
    font-weight: 600;
    color: var(--color-text);
}

.polyhedron-stats td {
    font-weight: 500;
    border-color: var(--color-gray-light);
}

/* Specific table styles */
.basic-stats {
    background-color: var(--color-gray-dark);
}

.face-stats th {
    /* background-color: var(--color-primary);
    color: var(--color-text); */
    background-color: var(--color-gray);
    color: var(--color-text);
}

.vertex-stats th {
    background-color: var(--color-secondary);
    /* color: var(--color-dark); */
    background-color: var(--color-gray);
    color: var(--color-text);
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }

    /* header { */
        /* flex-direction: column; */
        /* align-items: stretch; */
    /* } */

    h1 {
        text-align: center;
    }

    #scene-container {
        max-width: calc(100vh - 140px);
        padding-bottom: min(100%, calc(100vh - 140px));
    }

    .polyhedron-stats {
        font-size: 0.85rem;
    }

    .polyhedron-stats th,
    .polyhedron-stats td {
        padding: 0.4rem;
    }

    #info-panel {
        width: calc(70% - 20px);
        max-height: 70%;
    }

    .viewer-header {
        gap: 0.75rem;
    }

    .viewer-header h2 {
        font-size: 1.2rem;
    }

    .viewer-header .nav-button {
        min-width: 48px;
        min-height: 48px;
        font-size: 30px;
    }

    .polyhedron-nav {
        /* padding: 0.6rem; */
        gap: 0.4rem;
    }

    #viewer-section {
        max-height: calc(100vh - 140px); /* Smaller margins on mobile */
    }
}

@media (max-width: 360px) {
    .nav-arrow, .nav-button {
        min-width: 42px;
        min-height: 42px;
        font-size: 21px;
    }

    .polyhedron-nav {
        /* padding: 0.5rem; */
        gap: 0.4rem;
    }
}

#polyhedron-browser {
    padding: 1rem;
}

.category-section {
    margin-bottom: 0.5rem;
    border: 1px solid var(--color-gray-light);
    border-radius: 8px;
    background: var(--color-gray-dark);
}

.category-title {
    color: var(--color-text);
    padding: 0.5rem;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: 600;
    user-select: none;
    position: relative;
    background-color: var(--color-gray);
    list-style: none;
}

.category-title:hover {
    background-color: var(--color-secondary);
    color: var(--color-dark);
}

.category-title::after {
    content: '▼';
    position: absolute;
    right: 1rem;
    transition: transform 0.3s;
}

details[open] > .category-title::after {
    transform: rotate(180deg);
}

.polyhedra-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(128px, 1fr));
    gap: 0.5rem;
    padding: 0.5rem 0.5rem 0.5rem 0.5rem;
}

.polyhedron-card {
    background: var(--color-gray-dark);
    border-radius: 8px;
    padding: 0.5rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    overflow: hidden;
    border: 1px solid var(--color-gray);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    filter: drop-shadow(1px 1px 2px var(--color-text));
}

.polyhedron-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    background-color: var(--color-gray);
}

.polyhedron-preview {
    width: 96px;
    height: 96px;
    flex-shrink: 0;
    background-color: inherit;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.polyhedron-preview img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.polyhedron-info {
    width: 100%;
    text-align: center;
}

.polyhedron-title {
    font-size: 1rem;
    font-weight: bold;
    color: var(--color-text);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.2;
    max-height: 2.4em;
}

.polyhedron-quick-stats {
    color: var(--color-text);
    text-align: center;
}


#search-container {
    margin-bottom: 1rem;
    padding: 0 0.5rem;
    position: relative;
}

#search-input {
    width: 100%;
    padding: 0.5rem 0.8rem;
    font-size: 1rem;
    border: 2px solid var(--color-gray-light);
    border-radius: 8px;
    background-color: var(--color-gray-dark);
    transition: border-color 0.2s, box-shadow 0.2s;
    color: var(--color-text);
    filter: drop-shadow(0px 0px 2px var(--color-text));
}

#search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#search-input::placeholder {
    /* color: var(--color-gray-light); */
    color: var(--color-secondary);
}

#no-results {
    text-align: center;
    padding: 2rem;
    color: var(--color-text);
    font-size: 1.1rem;
    background-color: var(--color-gray-dark);
    border-radius: 8px;
    margin: 1rem 0.5rem;
    border: 1px solid var(--color-gray-light);
    display: none;
}

#no-results.visible {
    display: block;
}

footer {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background-color: var(--color-gray-dark);
    color: var(--color-text);
    padding: 1rem;
    margin-top: auto;
    border-top: 1px solid var(--color-gray-light);
}

footer details {
    background-color: var(--color-dark);
    border: 1px solid var(--color-gray-light);
    border-radius: 4px;
    padding: 0.5rem;
}

footer details summary {
    cursor: pointer;
    padding: 0.5rem;
    user-select: none;
    font-weight: 600;
}

footer details summary:hover {
    background-color: var(--color-gray);
    border-radius: 4px;
}

footer details[open] summary {
    border-bottom: 1px solid var(--color-gray-light);
    margin-bottom: 0.5rem;
}

footer details p {
    padding: 0.5rem;
    margin: 0;
    line-height: 1.5;
}

footer a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: var(--color-secondary);
    text-decoration: underline;
}

#loading-animation {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    gap: 1rem;
}

#loading-animation > #loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--color-gray);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

#loading-animation  > #loading-text {
    color: var(--color-text);
    font-size: 1.1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#loading-progress-container {
    width: 200px;
    height: 4px;
    background-color: var(--color-gray);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

#loading-progress-bar {
    height: 100%;
    width: 0%;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
    border-radius: 2px;
}

/* Theme toggle button styles */
#theme-toggle {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-gray-dark);
    border: 2px solid var(--color-gray-light);
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

#theme-toggle:hover {
    background-color: var(--color-gray);
    transform: scale(1.05);
}

/* Install button styles */
#install-button {
    position: absolute;
    top: 1rem;
    right: 4rem;
    padding: 0.5rem 1rem;
    border-radius: 24px;
    background-color: var(--color-primary);
    border: 2px solid var(--color-gray-light);
    color: var(--color-dark);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 600;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

#install-button:hover {
    background-color: var(--color-secondary);
    transform: scale(1.05);
}

#install-button.hidden {
    display: none;
}

/* Adjust theme icon based on current theme */
#theme-toggle[data-theme="dark"] .theme-icon-light {
    display: none;
}

#theme-toggle[data-theme="light"] .theme-icon-dark {
    display: none;
}

/* Additional light theme adjustments */
[data-theme="light"] .polyhedron-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
    background-color: var(--color-gray);
}

[data-theme="light"] #search-input {
    background-color: var(--color-dark);
    border-color: var(--color-gray-light);
}

[data-theme="light"] #search-input:focus {
    border-color: var(--color-primary);
}

[data-theme="light"] .category-title {
    background-color: var(--color-gray);
}

[data-theme="light"] .category-title:hover {
    background-color: var(--color-secondary);
    color: var(--color-dark);
}

[data-theme="light"] .nav-arrow:hover,
[data-theme="light"] .nav-button:hover {
    background-color: var(--color-secondary);
    color: var(--color-dark);
}

[data-theme="light"] footer {
    background-color: var(--color-gray);
    border-top-color: var(--color-gray-light);
}

.preview-placeholder {
    width: 100%;
    height: 100%;
    background-color: var(--color-gray-dark);
    border-radius: 4px;
    position: relative;
    overflow: hidden;
}

.preview-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        transparent,
        var(--color-secondary),
        transparent,
        transparent
    );
    opacity: 0.5;
    transform: skewX(-20deg) translateX(-100%);
    animation: sheen 2s ease-in-out infinite;
}

@keyframes sheen {
    0% {
        transform: skewX(-20deg) translateX(-120%);
    }
    100% {
        transform: skewX(-20deg) translateX(120%);
    }
}

#filter-container {
    display: flex;
    gap: 1rem;
    /* margin-top: 0.5rem; */
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    color: var(--color-text);
    font-size: 0.9rem;
    white-space: nowrap;
}

.range-inputs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.range-inputs input[type="number"] {
    width: 80px;
    padding: 0.25rem 0.5rem;
    font-size: 0.9rem;
    border: 1px solid var(--color-gray-light);
    border-radius: 4px;
    background-color: var(--color-gray-dark);
    color: var(--color-text);
}

.range-inputs input[type="number"]:focus {
    outline: none;
    border-color: var(--color-primary);
}

.range-inputs span {
    color: var(--color-text);
    font-size: 0.9rem;
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .filter-container {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .filter-group {
        width: 100%;
        justify-content: space-between;
    }
    
    .range-inputs input[type="number"] {
        width: 70px;
    }
}

#filter-container summary {
    cursor: pointer;
    color: var(--color-text);
    padding: 0.5rem;
    user-select: none;
    border-radius: 4px;
    background-color: var(--color-gray);
    /* margin-bottom: 0.5rem; */
}

#filter-container summary:hover {
    background-color: var(--color-gray-light);
}

.sub-filters {
    margin: 0.5rem 0;
    padding-left: 0.5rem;
}

.sub-filters summary {
    font-size: 0.9rem;
    /* margin-bottom: 0.5rem; */
}

.type-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 0.5rem;
    padding: 0.5rem;
    background-color: var(--color-gray-dark);
    border-radius: 4px;
}

.type-filter {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    background-color: var(--color-gray-dark);
    border-radius: 4px;
    border: 1px solid var(--color-gray-light);
}

.type-filter label {
    font-size: 0.9rem;
    color: var(--color-text);
}

.type-filter .range-inputs {
    margin-left: 0.5rem;
}

.filter-reset-button {
    background-color: var(--color-gray);
    color: var(--color-text);
    border: 1px solid var(--color-gray-light);
    border-radius: 4px;
    padding: 0.5rem 1rem;
    margin: 0.5rem 0;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.filter-reset-button:hover {
    background-color: var(--color-secondary);
    color: var(--color-dark);
}

.type-icon-container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 48px;
    height: 48px;
}

.type-inputs-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex: 1;
}

.type-inputs-container input {
    width: 100%;
    padding: 0.25rem 0.5rem;
    font-size: 0.9rem;
    border: 1px solid var(--color-gray-light);
    border-radius: 4px;
    background-color: var(--color-gray-dark);
    color: var(--color-text);
}

.type-inputs-container input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.type-icon {
    width: 48px;
    height: 48px;
}

/* SVG styles for vertex type */
.type-icon .vertex {
    fill: var(--color-primary);
    stroke: none;
}

.type-icon .edge {
    stroke: var(--color-text);
    stroke-width: 2;
}

.type-icon .edge-colored {
    stroke: var(--color-primary);
    stroke-width: 2;
}

/* SVG styles for face type */
.type-icon .face {
    fill: none;
    stroke: var(--color-text);
    stroke-width: 2;
}

/* SVG styles for face type */
.type-icon .face-filled {
    fill: var(--color-primary);
    stroke: none;
}

.type-icon .type-text {
    fill: var(--color-text);
    font-size: 14px;
    font-weight: bold;
    font-family: inherit;
}

/* Light theme adjustments */
[data-theme="light"] .type-icon .vertex {
    fill: var(--color-primary);
}

[data-theme="light"] .type-icon .edge,
[data-theme="light"] .type-icon .face {
    stroke: var(--color-text);
}

[data-theme="light"] .type-icon .type-text {
    fill: var(--color-text);
}