:root {
    --accent: #00ff88;
    --bg: #000000;
    --panel: rgba(12, 12, 12, 0.95);
    --border: rgba(255, 255, 255, 0.15);
    --hud-bg: rgba(0, 20, 10, 0.9);
}

/* --- CUSTOM SCROLLBAR --- */
/* --- CUSTOM SCROLLBAR --- */
/* Target the Sidebar Scroll Area specifically */
.scroll-area::-webkit-scrollbar {
    width: 6px;
    /* Slightly thinner for sidebar */
}

/* Fallback/Global */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    /* More subtle */
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    /* Create padding effect */
    border: 2px solid transparent;
    background-clip: content-box;
    transition: background-color 0.2s;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--accent);
    box-shadow: 0 0 10px var(--accent);
    border: 0;
}

::-webkit-scrollbar-corner {
    background: transparent;
}

* {
    /* Removed scrollbar-width/color to allow WebKit styling to take precedence */
    box-sizing: border-box;
    /* Good practice to keep if not present */
    -webkit-tap-highlight-color: transparent;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: var(--bg);
    font-family: 'Segoe UI', Roboto, Helvetica, sans-serif;
    color: white;
    touch-action: none;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    outline: none;
}

/* --- UI SIDEBAR --- */
#sidebar {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 340px;
    /* Glass Effect: Lower opacity + Strong Blur */
    background: rgba(12, 12, 12, 0.6);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 300;
    transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

#sidebar.collapsed {
    transform: translateX(-100%);
}

.header {
    padding: 0 15px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.03);
    position: relative;
    min-height: 80px; /* Unified luxury height */
}

.header-brand {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.header h1 {
    margin: 0;
    font-size: 13px;
    letter-spacing: 1px;
    color: var(--accent);
    text-transform: uppercase;
    font-weight: 800;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.app-version {
    font-size: 9px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 0.5px;
    margin-top: 2px;
    font-weight: 500;
}

.guide-btn-mini {
    width: auto !important;
    padding: 6px 10px !important;
    font-size: 9px !important;
    border-color: #444 !important;
    white-space: nowrap;
}

.scroll-area {
    flex: 1;
    overflow-y: auto;
    padding: 20px 20px 80px 20px;
    -webkit-overflow-scrolling: touch;
}

.mode-toggle-container {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 4px;
    margin-bottom: 20px;
}

.mode-pill {
    flex: 1;
    text-align: center;
    padding: 8px 0;
    font-size: 11px;
    font-weight: 800;
    color: #666;
    letter-spacing: 1px;
    cursor: pointer;
    border-radius: 16px;
    transition: all 0.3s ease;
    border: none;
    background: transparent;
}

.mode-pill:hover:not(.active) {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.mode-pill.active {
    background: var(--accent);
    color: #000;
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.section {
    margin-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 15px;
}

.section:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
}


.section-title {
    font-size: 10px;
    color: #666;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
    font-weight: 700;
}

.row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 12px;
    color: #ccc;
}

input[type=range] {
    width: 55%;
    accent-color: var(--accent);
    cursor: pointer;
    height: 4px;
    border-radius: 2px;
}

input[type=checkbox] {
    accent-color: var(--accent);
    transform: scale(1.2);
    cursor: pointer;
}

button {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: #ccc;
    padding: 12px 10px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 11px;
    font-weight: 600;
    transition: 0.2s;
    text-transform: uppercase;
    touch-action: manipulation;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

button:hover {
    border-color: var(--accent);
    color: white;
    background: rgba(0, 255, 136, 0.1);
}

.btn-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.custom-item {
    display: flex;
    width: 100%;
    margin-bottom: 8px;
    align-items: center;
    gap: 6px;
}

.shape-btn {
    flex: 1;
    height: 34px;
    justify-content: flex-start;
    text-align: left;
    padding-left: 12px;
    padding-right: 5px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    font-size: 11px;
    border-radius: 6px;
}

.icon-btn {
    width: 34px;
    height: 34px;
    padding: 0;
    flex-shrink: 0;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
}

svg.btn-icon {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    pointer-events: none;
}

.text-input-wrapper {
    background: #111;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
}

textarea.input-area {
    width: 100%;
    background: none;
    border: none;
    border-bottom: 1px solid #444;
    color: white;
    padding: 8px 0;
    font-size: 14px;
    margin-bottom: 10px;
    outline: none;
    box-sizing: border-box;
    resize: vertical;
    min-height: 40px;
    font-family: monospace;
}

select {
    background: #222;
    color: white;
    border: 1px solid #444;
    padding: 8px;
    border-radius: 4px;
    width: 100%;
    margin-bottom: 8px;
    font-size: 11px;
}

.sidebar-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    box-sizing: border-box;
    z-index: 10;
    padding: 30px 20px 20px;
    border-top: none;
    font-size: 9px;
    color: rgba(255, 255, 255, 0.4);
    text-align: center;
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.8) 40%, #050505 100%);
    text-transform: uppercase;
    letter-spacing: 2px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 700;
    pointer-events: none;
}

.sidebar-footer > div {
    pointer-events: auto;
}


.footer-socials {
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: center;
}

.social-link {
    color: rgba(255, 255, 255, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.social-link svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
    display: block;
}

.social-link:hover {
    color: var(--accent);
    filter: drop-shadow(0 0 8px var(--accent));
    transform: translateY(-2px);
}


.sidebar-footer a {
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.sidebar-footer a:hover {
    color: white;
    border-bottom-color: var(--accent);
    text-shadow: 0 0 15px var(--accent);
}


.heart-icon {
    color: #ff0055;
    font-size: 14px;
    line-height: 1;
    display: inline-block;
}



/* SIDEBAR HEADER TWEAKS - REMOVED GENERIC MARGIN */

#toggle-sidebar {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
    position: relative; /* Default in flow */
    z-index: 310;
    padding: 0;
}

#toggle-sidebar:hover {
    border-color: var(--accent);
    background: rgba(0, 255, 136, 0.1);
}

#toggle-sidebar svg {
    width: 24px;
    height: 24px;
    display: block;
    /* Removes descender space */
}

/* Collapsed State: Stick Out */
#sidebar.collapsed #toggle-sidebar {
    position: absolute;
    top: 20px; /* Perfectly aligned with toolbar (20px) */
    left: 100%;
    margin-left: 12px;
    background: rgba(10, 10, 10, 0.9);
    border: 1px solid var(--border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    width: 40px;
    height: 40px;
    box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

/* UI TOOLBAR */
#ui-toolbar {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 200;
    display: flex;
    gap: 8px;
    align-items: center;
}

.tool-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.2s;
    position: relative;
}

.tool-btn:hover {
    border-color: var(--accent);
    background: rgba(0, 255, 136, 0.1);
}

.tool-btn svg {
    width: 20px;
    height: 20px;
    fill: #fff;
    transition: fill 0.2s, stroke 0.2s;
}

.tool-btn.active svg {
    fill: var(--accent);
    stroke: var(--accent);
}

.tool-btn.active {
    border-color: var(--accent);
    background: rgba(0, 255, 136, 0.2);
}

/* Green Shimmer for AI Prompt Button */
@keyframes green-shimmer {
    0% { box-shadow: 0 0 5px rgba(0, 255, 136, 0.2); border-color: rgba(0, 255, 136, 0.3); }
    50% { box-shadow: 0 0 15px rgba(0, 255, 136, 0.6); border-color: rgba(0, 255, 136, 1); }
    100% { box-shadow: 0 0 5px rgba(0, 255, 136, 0.2); border-color: rgba(0, 255, 136, 0.3); }
}

#btn-sample-prompt {
    animation: green-shimmer 2s infinite ease-in-out;
    border: 1px solid var(--accent);
    color: var(--accent);
}


/* MUSIC PLAYER */
#music-player {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0 4px;
    height: 40px;
    margin-right: 10px;
    backdrop-filter: blur(10px);
}

.music-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: #aaa;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
}

.music-btn:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.music-btn svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

#track-info {
    position: absolute;
    top: 45px;
    right: 180px;
    background: var(--accent);
    color: black;
    font-size: 10px;
    font-weight: bold;
    padding: 4px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    pointer-events: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.5s, transform 0.5s;
    white-space: nowrap;
}

#track-info.show {
    opacity: 1;
    transform: translateY(0);
}

/* CONTROLS HUD */
#controls-panel {
    position: fixed;
    top: 75px;
    right: 20px;
    width: 260px;
    background: var(--hud-bg);
    border-right: 3px solid var(--accent);
    backdrop-filter: blur(10px);
    padding: 15px;
    border-radius: 6px;
    z-index: 95;
    display: none;
    flex-direction: column;
    gap: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
    transition: opacity 0.3s, transform 0.3s;
}

#controls-panel.visible {
    display: flex;
    animation: slideInRight 0.3s ease-out;
}

.control-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
    transition: 0.3s;
    padding: 5px;
    border-radius: 4px;
}

.control-item.active-control {
    background: rgba(0, 255, 136, 0.2);
    border-left: 3px solid var(--accent);
    padding-left: 8px;
}

.control-label {
    font-size: 11px;
    color: var(--accent);
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    letter-spacing: 1px;
}

.control-val {
    color: white;
    font-weight: normal;
}

/* INFO HUD */
#hud-panel {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 320px;
    max-height: 40vh;
    background: var(--hud-bg);
    border-left: 3px solid var(--accent);
    backdrop-filter: blur(10px);
    padding: 20px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    display: none;
    flex-direction: column;
    overflow-y: auto;
    z-index: 90;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.8);
    transition: opacity 0.3s;
}

#hud-panel.visible {
    display: flex;
    animation: slideInUp 0.3s ease-out;
}

#hud-title {
    margin: 0 0 10px 0;
    font-size: 16px;
    font-weight: bold;
    color: var(--accent);
    text-transform: uppercase;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding-bottom: 5px;
}

#hud-desc {
    margin: 0;
    font-size: 12px;
    line-height: 1.5;
    color: #ddd;
    white-space: pre-wrap;
}

/* FULLSCREEN GESTURE HUD (HIDDEN PROJECTION) */
#gesture-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 998;
    pointer-events: none;
    /* Let clicks pass through */
    display: none;
}

#webcam-canvas {
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    transform: scaleX(-1);
    /* Mirror effect */
    object-fit: cover;
    /* ESSENTIAL FOR FULLSCREEN MAPPING */
    opacity: 0;
    /* HIDDEN VISUALLY, ACTIVE IN BACKGROUND */
}

#gesture-status {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid var(--accent);
    color: var(--accent);
    font-size: 14px;
    padding: 10px 24px;
    text-align: center;
    font-weight: bold;
    border-radius: 30px;
    z-index: 999;
    display: none;
    text-transform: uppercase;
    box-shadow: 0 0 20px var(--accent);
    letter-spacing: 2px;
}

/* GESTURE GUIDE OVERLAY */
#gesture-guide {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    border: 1px solid var(--accent);
    padding: 20px;
    border-radius: 12px;
    z-index: 2000;
    display: none;
    flex-direction: column;
    gap: 15px;
    width: 340px;
    box-shadow: 0 0 50px rgba(0, 255, 136, 0.2);
}

.guide-row {
    display: flex;
    align-items: center;
    gap: 15px;
    color: #ccc;
    font-size: 12px;
}

.guide-icon {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.guide-btn {
    background: var(--accent);
    color: black;
    border: none;
    padding: 8px;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 10px;
}

/* ANNOTATIONS */
#annotation-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
    z-index: 80;
    opacity: 0; /* Hidden by default to fix mobile glitch */
    transition: opacity 0.3s ease;
}


.annotation {
    position: absolute;
    transform: translate(-50%, -50%);
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0.9;
}

.anno-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent);
}

.anno-line {
    width: 30px;
    height: 1px;
    background: var(--accent);
    transform-origin: left center;
}

.anno-text {
    background: rgba(0, 0, 0, 0.8);
    padding: 4px 8px;
    border: 1px solid var(--accent);
    font-size: 10px;
    font-family: monospace;
    color: var(--accent);
    border-radius: 4px;
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* MODALS & OVERLAYS */
#guide-modal,
#export-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 650px;
    height: auto; /* Shrink to fit content */
    max-height: 85vh; /* But don't exceed screen */
    background: #111;
    border: 1px solid var(--accent);
    padding: 25px;
    padding-bottom: 20px;
    z-index: 2000;
    display: none;
    flex-direction: column;
    border-radius: 8px;
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.9);
    overflow: hidden; 
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding-right: 5px;
    margin-bottom: 20px;
    -webkit-overflow-scrolling: touch;
}


.guide-header {
    display: flex;
    flex-direction: column;
    gap: 4px;
    border-bottom: 1px solid #333;
    padding-bottom: 12px;
    margin-bottom: 5px;
    padding-right: 40px; /* Make room for absolute close button */
}


.recommended-models {
    font-size: 11px;
    color: #aaa;
    font-weight: bold;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

#guide-modal h3,
#export-modal h3 {
    color: var(--accent);
    margin: 0;
}

.modal-close-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: #555;
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
}

.modal-close-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: #fff;
    transform: rotate(90deg);
}


.modal-btn-row {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: auto; /* Push to bottom */
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}


.modal-btn-row button {
    height: 42px;
    padding: 0 25px;
    font-size: 13px;
    font-weight: 500;
}


.code-block {
    background: #222;
    padding: 15px;
    font-family: monospace;
    font-size: 12px;
    color: #ccc;
    border-radius: 4px;
    white-space: pre-wrap;
    margin: 15px 0;
    border: 1px solid #333;
    user-select: all;
    flex-grow: 1; /* Allow to expand */
    overflow-y: auto;
}


#draw-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #050505;
    z-index: 5000;
    /* Ensure it's on top of everything */
    display: none;
    flex-direction: column;
}

#draw-header {
    padding: 15px 20px;
    background: #111;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #333;
    flex-shrink: 0;
}

#draw-canvas {
    flex: 1;
    width: 100%;
    background: #000;
    cursor: crosshair;
    touch-action: none;
    display: block;
}

#draw-footer {
    padding: 15px;
    background: #111;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    border-top: 1px solid #333;
    flex-shrink: 0;
    z-index: 5001;
    flex-wrap: wrap;
    /* Allow wrapping on small screens */
}

/* Footer Groups */
.footer-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

#fill-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 12px;
    color: #aaa;
    cursor: pointer;
}

#fill-toggle input {
    accent-color: var(--accent);
}

.separator {
    width: 1px;
    height: 20px;
    background: #333;
}

.label-text {
    font-size: 12px;
    color: #aaa;
    white-space: nowrap;
}

#drawDepth {
    width: 150px;
}

#drawDepthVal {
    font-size: 12px;
    color: var(--accent);
    width: 60px;
    white-space: nowrap;
}

#btn-build-3d {
    margin-left: 10px;
    display: flex;
    align-items: center;
}

#btn-build-3d svg {
    width: 14px;
    fill: currentColor;
    margin-right: 4px;
}

/* Responsive Footer */
@media (max-width: 600px) {
    #draw-footer {
        padding: 10px;
        gap: 10px;
        justify-content: space-between;
    }

    .footer-group.main-controls {
        flex: 1;
        justify-content: center;
    }

    #drawDepth {
        width: 80px;
        /* Smaller slider on mobile */
        flex: 1;
    }

    #btn-build-3d {
        width: 100%;
        margin-left: 0;
        justify-content: center;
        margin-top: 5px;
    }
}

#loader {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0, 0, 0, 0.9);
    color: var(--accent);
    padding: 20px 40px;
    border: 1px solid var(--accent);
    display: none;
    z-index: 3000;
    font-family: monospace;
    letter-spacing: 2px;
    border-radius: 4px;
}

.file-box {
    border: 1px dashed #444;
    padding: 10px;
    border-radius: 6px;
    position: relative;
    margin-bottom: 10px;
    transition: border-color 0.2s;
}

.file-box:hover {
    border-color: var(--accent);
}

@keyframes slideInUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(20px);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* --- VISUAL STYLE GRID --- */
.style-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-bottom: 12px;
}

.style-btn {
    aspect-ratio: 1;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #1a1a1a;
    border: 1px solid #333;
    border-radius: 6px;
    cursor: pointer;
    transition: 0.2s;
}


.style-btn svg {
    width: 20px;
    height: 20px;
    fill: #666;
    transition: all 0.2s;
}

.style-btn:hover {
    background: #222;
    border-color: #555;
    transform: translateY(-2px);
}

.style-btn:hover svg {
    fill: #fff;
    transform: scale(1.1);
}

.style-btn.active {
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--accent);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.2);
}

.style-btn.active svg {
    fill: var(--accent);
    filter: drop-shadow(0 0 5px var(--accent));
}

/* Tooltip on hover */
.style-btn::after {
    content: attr(title);
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 8px;
    color: white;
    opacity: 0;
    transition: 0.2s;
    pointer-events: none;
    background: rgba(0, 0, 0, 0.8);
    padding: 2px 4px;
    border-radius: 4px;
    white-space: nowrap;
}

.style-btn:hover::after {
    bottom: 2px;
    opacity: 1;
}

/* Generic Icon Fixes */
.btn-icon,
button svg {
    pointer-events: none;
    /* Prevent clicks on SVG path */
}

/* --- MOBILE RESPONSIVENESS --- */
@media (max-width: 768px) {

    /* 1. Sidebar */
    #sidebar {
        width: 85%;
        max-width: 320px;
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.5);
    }

    .header-controls {
        gap: 5px;
    }

    #toggle-sidebar {
        width: 32px;
        height: 32px;
    }

    #sidebar.collapsed #toggle-sidebar {
        position: absolute;
        top: 10px;
        left: 100%;
        margin-left: 8px;
        width: 36px;
        height: 36px;
    }

    /* Tool button inherited shimmer removed from here */



    /* 2. Toolbar - Compact Mode */
    #ui-toolbar {
        top: 10px;
        right: 10px;
        gap: 5px;
        flex-wrap: wrap;
        width: auto;
        max-width: 85%;
        /* Allow space for toggle button if needed */
        justify-content: flex-end;
    }

    .tool-btn {
        width: 36px;
        height: 36px;
    }

    #music-player {
        height: 36px;
    }

    .music-btn {
        width: 28px;
        height: 28px;
    }

    /* 3. Layout Adjustments */
    .header h1 {
        font-size: 12px;
    }

    /* CONTROLS PANEL - BOTTOM SHEET STYLE */
    #controls-panel {
        top: auto;
        bottom: 85px; /* Sit above the #nav-footer */
        left: 20px;
        right: 20px;
        width: auto;
        height: auto;
        max-height: 40vh;
        border-radius: 12px 12px 0 0;
        border-right: none;
        border-top: 2px solid var(--accent);
        transform: translateY(110%);
        transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1);
        padding: 20px;
        box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.8);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        touch-action: pan-y;
    }

    #controls-panel.visible {
        display: flex;
        transform: translateY(0);
        animation: none;
        /* Override slideInRight */
    }

    /* INFO HUD - CENTERED OVERLAY */
    #hud-panel {
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0.9);
        bottom: auto;
        right: auto;
        width: 85%;
        max-width: 320px;
        max-height: 60vh;
        padding: 25px;
        border-left: none;
        border: 1px solid var(--accent);
        background: rgba(10, 10, 10, 0.85);
        /* Slightly more opaque */
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        box-shadow: 0 0 40px rgba(0, 0, 0, 0.8);
        border-radius: 12px;
        opacity: 0;
        pointer-events: none;
    }

    #hud-panel.visible {
        opacity: 1;
        pointer-events: auto;
        transform: translate(-50%, -50%) scale(1);
        animation: none;
        /* Override slideInUp */
    }

    #guide-modal,
    #export-modal {
        width: 100%;
        height: 100% !important; /* Fullscreen on mobile */
        max-height: none; /* Override desktop max-height */
        top: 0;
        left: 0;
        transform: none;
        border-radius: 0;
        border: none;
        padding: 20px;
        padding-top: 25px;
        background: rgba(10, 10, 10, 0.98);
        flex-direction: column;
        overflow: hidden; 
    }

    /* Refine Modal Header for Mobile */
    .guide-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        padding-bottom: 15px;
    }

    .recommended-models {
        font-size: 9px;
        opacity: 0.7;
    }


    #export-modal .row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        margin-bottom: 25px;
        font-size: 14px;
    }

    #export-modal .row select,
    #export-modal .row input {
        width: 100%;
        text-align: left;
        height: 48px;
        background: rgba(255,255,255,0.05);
        border: 1px solid rgba(255,255,255,0.1);
        border-radius: 8px;
        padding: 0 15px;
        color: white;
    }

    #export-modal .modal-btn-row {
        flex-direction: column-reverse;
        gap: 12px;
        padding-top: 20px;
        margin-top: auto;
    }

    .modal-btn-row button {
        width: 100%;
        height: 46px; 
        margin: 0;
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.5px;
    }

    .code-block {
        font-size: 11px;
        padding: 10px;
    }



    /* 4. Canvas interaction */
    canvas {
        touch-action: none;
    }
}

/* MINI NAVIGATION FOOTER */
#nav-footer {
    position: fixed;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    z-index: 1000;
    transition: all 0.3s ease;
    user-select: none;
}

#nav-footer:hover {
    background: rgba(0, 0, 0, 0.6);
    border-color: var(--accent);
}

.nav-btn {
    background: none;
    border: none;
    color: white;
    padding: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.7;
    transition: all 0.2s ease;
}

.nav-btn:hover {
    opacity: 1;
    color: var(--accent);
    transform: scale(1.1);
}

.nav-btn svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
}

#nav-sim-name {
    color: white;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    cursor: pointer;
    white-space: nowrap;
    min-width: 80px;
    text-align: center;
    opacity: 0.9;
}

#nav-sim-name:hover {
    color: var(--accent);
}

/* Scroll area anchoring fix */
.scroll-area {
    scroll-behavior: smooth;
}
/* HEART POP ANIMATION */
@keyframes heart-pop {
    0% { transform: scale(1); }
    50% { transform: scale(1.4); }
    100% { transform: scale(1.1); }
}

#btn-like-main.liked,
.like-btn.liked {
    color: #ff4d4d !important;
    opacity: 1;
    filter: drop-shadow(0 0 8px rgba(255, 77, 77, 0.6));
    animation: heart-pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#btn-like-main.liked svg,
.like-btn.liked svg {
    fill: #ff4d4d !important;
    stroke: #ff4d4d !important;
}

/* ================================================
   MESH SCULPTOR SECTION STYLES
   ================================================ */

#section-sculptor {
    position: relative;
    border: 1px solid rgba(0, 255, 136, 0.12);
    border-radius: 8px;
    padding: 14px;
    margin-bottom: 20px;
    background: rgba(0, 255, 136, 0.02);
    transition: border-color 0.3s;
}

#section-sculptor:hover {
    border-color: rgba(0, 255, 136, 0.25);
}

#section-sculptor .section-title {
    color: var(--accent);
    margin-bottom: 10px;
}

/* Sculpt button hover — green glow */
#btn-sculpt-run:hover {
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--accent) !important;
    color: var(--accent) !important;
    box-shadow: 0 0 12px rgba(0, 255, 136, 0.3);
}

/* Clear button hover — red glow */
#btn-sculpt-clear:hover {
    background: rgba(255, 68, 68, 0.12);
    border-color: #f44 !important;
    color: #f88 !important;
    box-shadow: 0 0 12px rgba(255, 68, 68, 0.3);
}

/* Code textarea focus ring */
#meshCode:focus {
    outline: none;
    border-color: rgba(0, 255, 136, 0.4) !important;
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.1);
}

/* Mesh name input focus */
#meshName:focus {
    outline: none;
    border-color: rgba(0, 255, 136, 0.4) !important;
}