/* Visualizador 3D/2D — estilos próprios (tema claro/escuro e cabeçalho ficam em base.css) */

:root {
    --accent-viewer: #8b5cf6;
    --accent-viewer-dark: #6d28d9;
    --accent-rgb: 139, 92, 246;
    --sidebar-width: 250px;
}

.app-container {
    max-width: 100%;
    margin: 0;
}

.app-header h1 i { color: var(--accent-viewer); }

.main-content {
    padding: 0;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 60px);
}

/* ---------- Área de upload ---------- */
.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .25rem;
    padding: 2.5rem 1.5rem;
    margin: 1.25rem;
    border: 2px dashed var(--border);
    border-radius: calc(var(--radius) + 4px);
    background: var(--surface);
    transition: border-color .25s, background .25s, transform .15s;
    cursor: pointer;
    min-height: 220px;
    text-align: center;
}

.upload-area:hover {
    border-color: rgba(var(--accent-rgb), 0.5);
}

.upload-area.dragover {
    border-color: var(--accent-viewer);
    background: rgba(var(--accent-rgb), 0.08);
    transform: scale(1.01);
}

.upload-area .upload-icon {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: .5rem;
    background: rgba(var(--accent-rgb), 0.12);
    color: var(--accent-viewer);
    transition: transform .25s;
}

.upload-area.dragover .upload-icon { transform: translateY(-4px); }

.upload-area .upload-icon i { font-size: 1.9rem; margin: 0; }

.upload-area p {
    color: var(--text-secondary);
    font-size: .95rem;
    margin-bottom: .2rem;
}

.upload-area .formats {
    font-size: .72rem;
    letter-spacing: .03em;
    opacity: .6;
    margin-bottom: 1.25rem;
}

.upload-area .btn {
    max-width: 240px;
    background: linear-gradient(135deg, var(--accent-viewer-dark), var(--accent-viewer));
    box-shadow: 0 4px 14px rgba(var(--accent-rgb), 0.35);
    border: none;
}

.upload-area .btn:hover { box-shadow: 0 6px 18px rgba(var(--accent-rgb), 0.45); }

/* ---------- Viewport ---------- */
.viewport-container {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

#three-container {
    flex: 1;
    position: relative;
    background: var(--bg);
    overflow: hidden;
    min-height: 0;
    transition: margin-left 0.3s ease;
}

#three-container canvas { display: block; }

/* Barra fina de informações do arquivo, sempre acima do viewport */
.file-info-bar {
    display: flex;
    align-items: center;
    gap: .55rem;
    padding: .4rem .75rem;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    font-size: .75rem;
    color: var(--text-secondary);
    flex-wrap: nowrap;
    flex-shrink: 0;
    width: 100%;
    overflow: hidden;
}

.file-info-bar .file-icon {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent-viewer);
    font-size: .7rem;
}

.file-info-bar .badge {
    flex-shrink: 0;
    padding: 2px 7px;
    border-radius: 99px;
    font-size: .65rem;
    font-weight: 700;
    letter-spacing: .03em;
    background: rgba(var(--accent-rgb), 0.15);
    color: var(--accent-viewer);
}

.file-info-bar .name {
    font-weight: 600;
    color: var(--text);
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-info-bar .quick-info {
    flex-shrink: 0;
    white-space: nowrap;
    opacity: .85;
}

.file-info-bar .close-btn {
    flex-shrink: 0;
    cursor: pointer;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: background .2s, color .2s;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: .9rem;
}

.file-info-bar .close-btn:hover {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
}

/* Stats na sidebar */
.sidebar-stats {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
}

.stat-chip {
    flex: 0 0 calc(50% - 0.2rem);
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
    padding: .25rem .5rem;
    border-radius: var(--radius-sm);
    background: var(--bg);
    border: 1px solid var(--border);
    min-width: 0;
}

.stat-chip .label {
    font-size: .55rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--text-secondary);
    opacity: .75;
    line-height: 1.2;
}

.stat-chip .value {
    font-size: .75rem;
    font-weight: 700;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ---------- Barra Lateral Industrial ---------- */

/* Backdrop escuro atrás da sidebar quando expandida */
.sidebar-backdrop {
    position: absolute;
    inset: 0;
    z-index: 14;
    background: rgba(0, 0, 0, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.viewport-container.show-sidebar .sidebar-backdrop.backdrop-visible {
    opacity: 1;
    pointer-events: auto;
}

.industrial-sidebar {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--surface);
    border-right: 1px solid var(--border);
    z-index: 15;
    display: flex;
    flex-direction: column;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    box-shadow: 4px 0 24px rgba(0,0,0,0.18);
}

/* Botão flutuante para reabrir a sidebar (desktop) */
.sidebar-toggle-btn {
    display: none;
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 13;
    width: 28px;
    height: 52px;
    border-radius: 0 8px 8px 0;
    border: 1px solid var(--border);
    border-left: none;
    background: var(--surface);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: .8rem;
    box-shadow: 2px 0 8px rgba(0,0,0,0.1);
    transition: color .2s, background .2s, left 0.3s ease;
    align-items: center;
    justify-content: center;
}

.sidebar-toggle-btn:hover {
    color: var(--accent-viewer);
    background: rgba(var(--accent-rgb), 0.08);
}

/* Sidebar recolhida desliza totalmente para fora no desktop */
@media (min-width: 769px) {
    .viewport-container.show-sidebar .industrial-sidebar.collapsed {
        transform: translateX(-100%);
    }
    
    .sidebar-toggle-btn.visible {
        display: flex;
    }
}

.viewport-container.show-sidebar .industrial-sidebar {
    transform: translateX(0);
}

/* Sidebar sobrepõe o canvas em vez de empurrar */
.viewport-container.show-sidebar #three-container {
    margin-left: 0;
}

/* Cabeçalho do painel de ferramentas */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: rgba(var(--accent-rgb), 0.08);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text);
    user-select: none;
    flex-shrink: 0;
}

.sidebar-header .toggle-icon {
    transition: transform 0.3s ease;
}

/* Área de conteúdo rolável */
.sidebar-content {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    transition: max-height 0.3s ease, opacity 0.2s ease, padding 0.3s ease;
}

/* Lógica da classe 'collapsed' (Recolhido) */
.industrial-sidebar.collapsed .sidebar-content {
    max-height: 0 !important;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    padding-bottom: 0;
}

.industrial-sidebar.collapsed .sidebar-header .toggle-icon {
    transform: rotate(-90deg);
}

.sidebar-section {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-section h3 {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.sidebar-section input[type="range"] {
    width: 100%;
    margin-top: 0.5rem;
    accent-color: var(--accent-viewer);
}

.component-tree {
    max-height: 180px;
    overflow-y: auto;
    font-size: 0.8rem;
    scrollbar-width: thin;
}

.tree-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 8px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.2s, color 0.2s;
    color: var(--text);
}

.tree-item:hover { 
    background: rgba(var(--accent-rgb), 0.1);
    color: var(--accent-viewer); 
}

.tree-item.hidden-part { 
    opacity: 0.5; 
}

.tree-item span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 180px;
}

.tool-btn {
    width: 100%;
    padding: 8px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.tool-btn:hover {
    border-color: var(--accent-viewer);
    color: var(--accent-viewer);
}

.tool-btn.active { 
    background: var(--accent-viewer); 
    border-color: var(--accent-viewer);
    color: white; 
}

.measure-result { 
    display: block; 
    margin-top: 8px; 
    font-weight: bold; 
    font-size: 0.85rem;
    text-align: center;
    color: var(--accent-viewer);
    min-height: 20px;
}

/* ---------- Controles flutuantes do viewport ---------- */
.viewport-overlay-controls {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    z-index: 10;
    padding: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) + 4px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
    max-width: 108px;
}

.viewport-overlay-controls button {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: .95rem;
    transition: color .2s, background .2s, transform .15s, border-color .2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Botão pequeno (para ações secundárias na sidebar) */
.tool-btn.small-btn {
    width: auto;
    padding: 4px 10px;
    font-size: .72rem;
    margin-top: 6px;
    display: inline-flex;
}

/* Seletor de cor de fundo */
.bg-color-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 4px;
}

.bg-color-row input[type="color"] {
    width: 40px;
    height: 36px;
    padding: 2px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    cursor: pointer;
}

.bg-color-row .tool-btn.small-btn {
    margin-top: 0;
    flex: 1;
}

/* ---------- Bottom toolbar (mobile, fixed) ---------- */
.viewport-bottom-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 6px 12px;
    justify-content: space-around;
    align-items: center;
    gap: 4px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.08);
}

.viewport-bottom-bar button {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: .85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color .2s, background .2s;
}

.viewport-bottom-bar button:hover {
    color: var(--accent-viewer);
    background: rgba(var(--accent-rgb), 0.08);
}

.viewport-bottom-bar button.active {
    color: #fff;
    background: var(--accent-viewer);
    border-color: var(--accent-viewer);
}

.viewport-overlay-controls button:hover {
    color: var(--accent-viewer);
    background: rgba(var(--accent-rgb), 0.08);
    border-color: rgba(var(--accent-rgb), 0.4);
    transform: translateY(-2px);
}

.viewport-overlay-controls button:active { transform: scale(0.92) translateY(0); }

.viewport-overlay-controls button.active {
    color: #fff;
    background: var(--accent-viewer);
    border-color: var(--accent-viewer);
    box-shadow: 0 0 12px rgba(var(--accent-rgb), 0.3);
}

/* ---------- Indicadores ---------- */
.stats-overlay {
    position: absolute;
    top: .6rem;
    left: .6rem;
    z-index: 10;
    font-size: .7rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: var(--surface);
    border: 1px solid var(--border);
    padding: 5px 11px;
    border-radius: 99px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity .25s, transform .25s;
}

.stats-overlay.visible { opacity: .92; transform: translateY(0); }

.loading-overlay {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    transition: opacity .3s;
}

.loading-overlay.hidden { opacity: 0; pointer-events: none; }

.loading-overlay .spinner {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 3px solid var(--border);
    border-top-color: var(--accent-viewer);
    border-right-color: var(--accent-viewer);
    animation: spin .8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Responsivo ---------- */
@media (max-width: 768px) {
    .viewport-container.show-sidebar .industrial-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        height: auto;
        bottom: auto;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }
    
    .sidebar-content {
        max-height: 35vh;
    }
    
    /* Bottom toolbar fixo no mobile, overlay escondido */
    .viewport-bottom-bar {
        display: flex;
    }

    .main-content {
        padding-bottom: 56px;
    }
    
    .viewport-overlay-controls {
        display: none;
    }
}

@media (max-width: 600px) {
    .upload-area { margin: .6rem; min-height: 170px; padding: 1.5rem 1rem; }
    .upload-area .upload-icon { width: 60px; height: 60px; }
    .upload-area .upload-icon i { font-size: 1.5rem; }
    .viewport-overlay-controls { bottom: .75rem; right: .75rem; gap: 6px; }
    .viewport-overlay-controls button { width: 36px; height: 36px; font-size: .8rem; }
}

/* ---------- Desktop refinements ---------- */
@media (min-width: 1024px) {
    :root {
        --sidebar-width: 320px;
    }

    .component-tree {
        max-height: 380px;
    }

    .sidebar-section {
        padding: 1.15rem 1rem;
    }

    .sidebar-section h3 {
        font-size: .78rem;
    }

    .sidebar-content {
        font-size: .85rem;
    }

    .tree-item span {
        max-width: 240px;
    }

    .file-info-bar {
        padding: .5rem .85rem;
        font-size: .8rem;
    }

    .stat-chip {
        flex: 0 0 calc(33.33% - 0.25rem);
        padding: .35rem .6rem;
    }

    .stat-chip .value {
        font-size: .8rem;
    }

    .upload-area {
        min-height: 280px;
        padding: 3rem 2.5rem;
        margin: 2rem 3rem;
    }

    .upload-area .upload-icon {
        width: 80px;
        height: 80px;
    }

    .upload-area .upload-icon i {
        font-size: 2.2rem;
    }

    .viewport-overlay-controls {
        bottom: 1.5rem;
        right: 1.5rem;
        padding: 10px;
        gap: 8px;
        max-width: 120px;
    }

    .viewport-overlay-controls button {
        width: 48px;
        height: 48px;
        font-size: 1rem;
    }
}