:root{
  --bg:#0b0e14; --panel:#0f1320; --panel2:#0d1018; --fg:#e5e7eb; --muted:#9aa4b2; --primary:#55c2ff; --accent:#7c3aed; --border:#1f2433; --green:#22c55e;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}

/* Menu Compacto */
.topbar{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;border-bottom:1px solid var(--border);background:linear-gradient(180deg,#0f1320,#0b0e14);min-height:48px}
.brand{display:flex;align-items:center;gap:6px;font-weight:700;letter-spacing:.3px;font-size:14px}
.brand .logo{width:20px;height:20px;display:block}
.brand .partner-link{display:inline-flex;align-items:center;margin-left:6px}
.brand .partner-logo{height:18px;width:auto;display:block;border-radius:3px;box-shadow:0 0 0 1px var(--border);object-fit:contain}
/* Garantia na produção: não deixar o logo estourar no topo */
.topbar .partner-logo{height:18px!important;max-height:18px!important;width:auto!important;object-fit:contain;vertical-align:middle}
.brand .wordmark{background:linear-gradient(90deg,#55c2ff,#b794f4);-webkit-background-clip:text;background-clip:text;color:transparent;font-size:16px}
.actions{display:flex;gap:6px;align-items:center}
/* Botões compactos */
.btn{padding:6px 10px;background:#12172a;color:var(--fg);border:1px solid var(--border);border-radius:6px;cursor:pointer;font-size:13px;transition:all 0.2s ease}
.btn:hover{filter:brightness(1.1);transform:translateY(-1px)}
.btn.primary{background:linear-gradient(90deg,#0ea5e9,#7c3aed);border-color:#334155}
.btn.ghost{background:transparent}
.select{padding:6px 10px;border-radius:6px;background:#0d1017;border:1px solid var(--border);color:var(--fg);font-size:13px}

/* Dropdown Menu */
.dropdown{position:relative;display:inline-block}
.dropdown-toggle{min-width:36px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:bold}
.dropdown-menu{position:absolute;top:100%;right:0;background:#12172a;border:1px solid var(--border);border-radius:6px;box-shadow:0 4px 12px rgba(0,0,0,0.3);z-index:1000;min-width:160px;opacity:0;visibility:hidden;transform:translateY(-10px);transition:all 0.2s ease}
.dropdown.active .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown-item{display:block;width:100%;padding:8px 12px;background:transparent;border:none;color:var(--fg);text-align:left;cursor:pointer;text-decoration:none;font-size:13px;transition:background 0.2s ease}
.dropdown-item:hover{background:#1e293b}
.dropdown-item:first-child{border-top-left-radius:6px;border-top-right-radius:6px}
.dropdown-item:last-child{border-bottom-left-radius:6px;border-bottom-right-radius:6px}

/* Mobile Menu */
.mobile-menu-toggle{display:none;background:transparent;border:1px solid var(--border);color:var(--fg);padding:6px 10px;border-radius:6px;cursor:pointer;font-size:16px}
.mobile-menu-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);z-index:2000;opacity:0;visibility:hidden;transition:all 0.3s ease}
.mobile-menu-overlay.active{opacity:1;visibility:visible}
.mobile-menu{position:absolute;top:0;right:0;bottom:0;width:280px;background:#0b0e14;transform:translateX(100%);transition:transform 0.3s ease;overflow-y:auto}
.mobile-menu-overlay.active .mobile-menu{transform:translateX(0)}
.mobile-menu-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border);background:#0f1320}
.mobile-menu-header span{font-weight:700;color:var(--fg)}
.mobile-menu-close{background:transparent;border:none;color:var(--fg);font-size:20px;cursor:pointer;padding:4px}
.mobile-menu-content{padding:16px}
.mobile-menu-section{margin-bottom:20px}
.mobile-menu-section:last-child{margin-bottom:0}

/* Label para mobile select */
.mobile-menu-section label{
  user-select:none;
  display:block;
  margin-bottom:6px;
  font-size:12px;
  font-weight:500;
  text-transform:uppercase;
  letter-spacing:0.5px;
  color:var(--muted);
}

.mobile-select,.mobile-btn{width:100%;margin-bottom:8px;text-align:center;min-height:44px;font-size:16px;-webkit-appearance:none;-moz-appearance:none;appearance:none}

/* Melhorias específicas para mobile-select */
.mobile-select{
  background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' fill='%23e5e7eb' viewBox='0 0 16 16'%3e%3cpath d='M4.646 7.646a.5.5 0 0 1 .708 0L8 10.293l2.646-2.647a.5.5 0 0 1 .708.708l-3 3a.5.5 0 0 1-.708 0l-3-3a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  background-repeat:no-repeat;
  background-position:right 10px center;
  background-size:16px 16px;
  padding-right:40px;
  text-align:left;
  padding-left:12px;
  cursor:pointer;
  outline:none;
  transition:all 0.2s ease;
}

.mobile-select:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(85, 194, 255, 0.1);
}

.mobile-select option{
  background:#0d1017;
  color:var(--fg);
  padding:8px;
}
.mobile-btn{justify-content:center}

/* Responsividade */
.primary-actions{display:flex;gap:6px}
@media (max-width: 1200px){
  .primary-actions{display:none}
}

@media (max-width: 960px){
  .actions > .btn:not(.mobile-menu-toggle),.actions > .select:not(.mobile-select),.dropdown,.primary-actions{display:none}
  .mobile-menu-toggle{display:block}
}

@media (max-width: 480px){
  .topbar{padding:6px 8px}
  .brand{gap:4px}
  .brand .wordmark{font-size:14px}
  .actions{gap:4px}
}

/* Tooltips informativos */
.info-tooltip{
  position:relative;
  display:inline-block;
  margin-left:6px;
  font-size:12px;
  color:var(--muted);
  cursor:help;
  opacity:0.7;
  transition:all 0.2s ease;
  user-select:none;
}

.info-tooltip:hover{
  opacity:1;
  color:var(--primary);
  transform:scale(1.1);
}

.info-tooltip:hover::after{
  content:attr(title);
  position:absolute;
  bottom:calc(100% + 8px);
  left:50%;
  transform:translateX(-50%);
  background:var(--panel);
  color:var(--fg);
  padding:8px 12px;
  border-radius:6px;
  box-shadow:0 4px 12px rgba(0,0,0,0.3);
  border:1px solid var(--border);
  font-size:11px;
  line-height:1.3;
  white-space:nowrap;
  z-index:1000;
  max-width:200px;
  white-space:normal;
  word-wrap:break-word;
}

.info-tooltip:hover::before{
  content:'';
  position:absolute;
  bottom:calc(100% + 2px);
  left:50%;
  transform:translateX(-50%);
  width:0;
  height:0;
  border-left:4px solid transparent;
  border-right:4px solid transparent;
  border-top:4px solid var(--panel);
  z-index:1001;
}

/* Ajuste do título do painel para tooltip inline */
.panel-title{
  display:flex;
  align-items:center;
  justify-content:flex-start;
}

/* Layout dinâmico: 2 colunas para p5, 3 colunas para robótica */
.split-grid{display:grid;height:calc(100% - 48px);gap:0;transition:grid-template-columns 0.3s ease;position:relative}

/* Divisor redimensionável */
.resize-handle {
  position: absolute;
  background: linear-gradient(to bottom, transparent 0%, #555 20%, #777 50%, #555 80%, transparent 100%);
  cursor: row-resize;
  z-index: 10;
  opacity: 0.7;
  transition: opacity 0.2s ease;
}

.resize-handle:hover {
  opacity: 1;
  background: linear-gradient(to bottom, transparent 0%, #777 20%, #999 50%, #777 80%, transparent 100%);
}

.resize-handle.active {
  opacity: 1;
  background: linear-gradient(to bottom, transparent 0%, #5ec4ff 20%, #7dd3f9 50%, #5ec4ff 80%, transparent 100%);
}

/* Divisor vertical para layout 2 colunas (p5.js) */
.resize-handle.vertical {
  top: 0;
  bottom: 0;
  width: 6px;
  height: auto;
  cursor: col-resize;
  background: linear-gradient(to right, transparent 0%, #555 20%, #777 50%, #555 80%, transparent 100%);
}

.resize-handle.vertical:hover {
  background: linear-gradient(to right, transparent 0%, #777 20%, #999 50%, #777 80%, transparent 100%);
}

.resize-handle.vertical.active {
  background: linear-gradient(to right, transparent 0%, #5ec4ff 20%, #7dd3f9 50%, #5ec4ff 80%, transparent 100%);
}

/* Divisor secundário (horizontal dentro do painel esquerdo no layout p5.js) */
.resize-handle-secondary {
  position: absolute;
  background: linear-gradient(to bottom, transparent 0%, #555 20%, #777 50%, #555 80%, transparent 100%);
  cursor: row-resize;
  z-index: 10;
  opacity: 0.7;
  transition: opacity 0.2s ease;
  display: none; /* Escondido por padrão */
  left: 0;
  width: 50%; /* Apenas dentro do painel esquerdo */
  height: 6px;
}

.resize-handle-secondary:hover {
  opacity: 1;
  background: linear-gradient(to bottom, transparent 0%, #777 20%, #999 50%, #777 80%, transparent 100%);
}

.resize-handle-secondary.active {
  opacity: 1;
  background: linear-gradient(to bottom, transparent 0%, #5ec4ff 20%, #7dd3f9 50%, #5ec4ff 80%, transparent 100%);
}

/* Layout 2 colunas para p5.js - vertical no meio, esquerda dividida, direita inteira */
.split-grid.layout-2col{grid-template-rows:75% 25%;grid-template-columns:1fr 1fr}
.split-grid.layout-2col .pane.top-left{grid-area:1/1/2/2;background:var(--panel);border-right:none;border-bottom:none}
.split-grid.layout-2col .pane.top-right{grid-area:2/1/3/2;background:var(--panel);border-right:none}
.split-grid.layout-2col .pane.bottom-left{display:none}
.split-grid.layout-2col .pane.bottom-right{grid-area:1/2/3/3;background:var(--panel2);border-bottom:none}
iframe{border:0;width:100%;height:100%;display:block;background:var(--panel2)}

/* Remover padding extra dos iframes de robótica para melhor aproveitamento do espaço */
.components-iframe {
  border: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: var(--panel2);
}

/* Divisor vertical no layout 2 colunas - posição inicial no meio */
.split-grid.layout-2col .resize-handle {
  display: block;
  left: 50%; /* Posição inicial no meio (50/50) */
  transform: translateX(-50%);
}

/* Divisor secundário horizontal no layout 2 colunas - posição inicial favorecendo superior */
.split-grid.layout-2col .resize-handle-secondary {
  display: block;
  top: 75%; /* Posição inicial favorecendo área superior */
  transform: translateY(-50%);
  width: 50%; /* 50% da largura (correspondente ao divisor principal no meio) */
}

/* Layout 3 colunas: robótica (componentes em cima, código embaixo) */
.split-grid.layout-3col{
  grid-template-columns:1fr 1fr;
  grid-template-rows:80% 20%; /* Maximizado: 80% para componentes, 20% para código */
}

.split-grid.layout-3col .pane.top-left{grid-area:2/1/3/3;background:var(--panel);border-right:none;border-top:none}
.split-grid.layout-3col .pane.top-right{display:none}
.split-grid.layout-3col .pane.bottom-left{grid-area:1/1/2/2;background:var(--panel2);border-right:none;border-bottom:none}
.split-grid.layout-3col .pane.bottom-right{grid-area:1/2/2/3;background:var(--panel2);border-bottom:none}

/* Otimizações específicas para painéis de robótica */
.split-grid.layout-3col .pane.bottom-left .components-panel{
  overflow-y:auto;
  max-height:100%;
  position:relative;
}

.split-grid.layout-3col .pane.bottom-left .panel-title{
  position:sticky;
  top:0;
  background:var(--panel2);
  z-index:10;
}

.split-grid.layout-3col .pane.bottom-right .panel-title{
  position:sticky;
  top:0;
  background:var(--panel2);
  z-index:10;
}

/* Garantir altura mínima adequada para visualização completa */
.split-grid.layout-3col .pane.bottom-left,
.split-grid.layout-3col .pane.bottom-right {
  min-height:350px; /* Aumentado para 80% split */
  position:relative;
}

/* Área de código mais compacta para robótica */
.split-grid.layout-3col .pane.top-left {
  max-height:20vh; /* Limitar a 20% da viewport */
}

.split-grid.layout-3col .pane.top-left .editor-wrap {
  min-height:120px; /* Editor mais compacto */
  max-height:150px; /* Máximo permitido */
  overflow-y:auto;
}

/* Indicador visual de foco para painel de componentes */
.split-grid.layout-3col .pane.bottom-left .components-panel {
  transition:box-shadow 0.3s ease;
}

/* Scroll otimizado específico para robótica */
.split-grid.layout-3col .pane.bottom-left::-webkit-scrollbar,
.split-grid.layout-3col .pane.bottom-right::-webkit-scrollbar {
  width:8px;
}

.split-grid.layout-3col .pane.bottom-left::-webkit-scrollbar-track,
.split-grid.layout-3col .pane.bottom-right::-webkit-scrollbar-track {
  background:var(--panel2);
}

.split-grid.layout-3col .pane.bottom-left::-webkit-scrollbar-thumb,
.split-grid.layout-3col .pane.bottom-right::-webkit-scrollbar-thumb {
  background:var(--border);
  border-radius:4px;
}

.split-grid.layout-3col .pane.bottom-left::-webkit-scrollbar-thumb:hover,
.split-grid.layout-3col .pane.bottom-right::-webkit-scrollbar-thumb:hover {
  background:var(--muted);
}

/* Divisor horizontal no layout 3 colunas (robótica) - posição inicial favorecendo superior */
.split-grid.layout-3col .resize-handle {
  display: block;
  top: 75%; /* Posição inicial favorecendo área superior (componentes) */
  left: 0;
  right: 0;
  width: auto;
  height: 6px;
  transform: translateY(-50%);
  cursor: row-resize;
  background: linear-gradient(to bottom, transparent 0%, #555 20%, #777 50%, #555 80%, transparent 100%);
}

/* Esconder divisor secundário no layout robótica */
.split-grid.layout-3col .resize-handle-secondary {
  display: none;
}

.pane{display:flex;flex-direction:column;min-width:0;min-height:0;border:1px solid var(--border)}
.panel-title{padding:10px 14px;border-bottom:1px solid var(--border);font-size:12px;color:var(--muted);letter-spacing:.3px;text-transform:uppercase}

.editor-wrap{flex:1;min-height:0;display:flex}
.editor{flex:1;width:100%;padding:12px 14px;background:#0b0f17;color:#e6edf3;border:none;outline:none;resize:none;line-height:1.5;font-family:ui-monospace,SFMono-Regular,Consolas,Monaco,monospace;font-size:14px}
/* Quando CodeMirror estiver presente, ele substituirá o textarea */
.CodeMirror{flex:1;height:100% !important;background:#0b0f17;color:#e6edf3;font-family:ui-monospace,SFMono-Regular,Consolas,Monaco,monospace;font-size:14px}
.cm-s-material-darker.CodeMirror{background:#0b0f17;color:#e6edf3}
.cm-s-material-darker .CodeMirror-gutters{background:#0b0f17;color:#64748b;border-right:1px solid var(--border)}
.cm-s-material-darker .CodeMirror-cursor{border-left:2px solid #7dd3fc}
.cm-s-material-darker .CodeMirror-selected{background:#1f2937}
.cm-s-material-darker .cm-keyword{color:#93c5fd}
.cm-s-material-darker .cm-string{color:#86efac}
.cm-s-material-darker .cm-number{color:#fca5a5}
.cm-s-material-darker .cm-comment{color:#94a3b8}
.cm-s-material-darker .cm-def{color:#f8fafc}
.cm-s-material-darker .cm-variable{color:#e5e7eb}
.cm-s-material-darker .cm-variable-2{color:#c7d2fe}
.cm-s-material-darker .cm-operator{color:#fda4af}
.CodeMirror-matchingbracket{background:#1f2937;border-radius:2px;color:#fca5a5!important;font-weight:600}
.CodeMirror{font-size:15px;line-height:1.5}
.CodeMirror-foldgutter{width: .8em}
.CodeMirror-foldmarker{color:#94a3b8; font-family: monospace;}
/* Anotações didáticas no editor */
.cm-anno{background:rgba(148,163,184,0.10); border-left:3px solid #64748b; color:#e5e7eb; padding:6px 8px; margin:4px 0; border-radius:6px}
.cm-anno small{display:block; color:#94a3b8}
.description{padding:10px 14px;border-top:1px solid var(--border);font-size:13px;color:var(--muted)}

.preview{flex:1;width:100%;border:none;background:#121212}

/* Sombra sutil nas áreas */
.pane.left,.pane.right{box-shadow: inset 0 1px 0 rgba(255,255,255,0.02)}

/* Painel de notas didáticas - agora sempre visível */
.notes{padding:12px 14px;flex:1;overflow-y:auto;background:rgba(255,255,255,0.02)}
.notes.hidden{display:block}
.notes h3{margin:0 0 8px 0;font-size:14px;color:#cbd5e1}
.notes ul{margin:0;padding-left:18px}
.notes li{margin:4px 0;color:#e5e7eb}
.notes-placeholder{color:var(--muted);font-style:italic;text-align:center;margin-top:40px}

/* Painel de componentes de robótica otimizado */
.components-panel{
  flex:1;
  overflow:hidden;
  position:relative;
  display:flex;
  flex-direction:column;
}

.components-panel .components-iframe{
  width:100%;
  flex:1;
  border:none;
  background:transparent;
  min-height:0; /* Permite que o iframe seja comprimido */
}

/* Scroll personalizado para painel de componentes */
.components-panel:hover {
  overflow-y:auto;
}

.components-panel::-webkit-scrollbar {
  width:6px;
}

.components-panel::-webkit-scrollbar-track {
  background:transparent;
}

.components-panel::-webkit-scrollbar-thumb {
  background:var(--border);
  border-radius:3px;
  transition:background 0.2s ease;
}

.components-panel::-webkit-scrollbar-thumb:hover {
  background:var(--muted);
}

/* Indicador de scroll para o painel de componentes */
.components-panel::after {
  content:'';
  position:absolute;
  top:0;
  right:0;
  width:3px;
  height:100%;
  background:linear-gradient(to bottom, transparent 0%, var(--border) 10%, var(--border) 90%, transparent 100%);
  opacity:0;
  transition:opacity 0.2s ease;
  pointer-events:none;
}

.components-panel:hover::after {
  opacity:0.3;
}

/* Otimização do placeholder */
.components-placeholder{
  color:var(--muted);
  font-style:italic;
  text-align:center;
  margin:20px;
  padding:20px;
  font-size:13px;
  line-height:1.4;
}

/* Melhorias para o iframe de componentes quando carregado */
.components-iframe{
  width:100%;
  height:100%;
  border:none;
  background:transparent;
}

/* Modal */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center;padding:16px}
.modal.hidden{display:none}
.modal-content{width:min(920px,96vw);max-height:90vh;overflow:auto;background:#0f1320;border:1px solid var(--border);border-radius:12px}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border)}
.icon-btn{background:transparent;border:1px solid var(--border);color:var(--fg);border-radius:8px;padding:4px 8px;cursor:pointer}
.modal-body{padding:14px}
.credit-name{color:var(--muted)}
.credits-text{white-space:pre-wrap;background:#0b0f17;color:#e6edf3;border:1px solid var(--border);border-radius:8px;padding:12px;line-height:1.5}

@media (max-width: 960px){
  .split-grid{grid-template-rows:auto auto auto auto;grid-template-columns:1fr!important;gap:1px}
  
  /* 📱 LAYOUT 2 COLUNAS (P5.JS) EM MOBILE - EMPILHADO: CÓDIGO > VISUALIZAÇÃO > DICAS */
  .split-grid.layout-2col{
    grid-template-rows:auto auto auto!important;
    grid-template-columns:1fr!important;
  }
  .split-grid.layout-2col .pane.top-left{
    grid-area:1/1/2/2!important;
    border-right:none!important;
    border-bottom:1px solid var(--border)!important;
    min-height:200px;
  }
  .split-grid.layout-2col .pane.bottom-right{
    grid-area:2/1/3/2!important;
    border-right:none!important;
    border-bottom:1px solid var(--border)!important;
    min-height:300px;
    display:block!important;
  }
  .split-grid.layout-2col .pane.top-right{
    grid-area:3/1/4/2!important;
    border-right:none!important;
    border-bottom:none!important;
    min-height:150px;
    display:block!important;
  }
  .split-grid.layout-2col .pane.bottom-left{display:none!important}
  
  /* Esconder divisores em mobile */
  .split-grid.layout-2col .resize-handle,
  .split-grid.layout-2col .resize-handle-secondary{display:none!important}
  
  /* 📱 LAYOUT 3 COLUNAS (ROBÓTICA) EM MOBILE - EMPILHADO */
  .split-grid.layout-3col{
    grid-template-rows:auto auto auto!important;
    grid-template-columns:1fr!important;
  }
  .split-grid.layout-3col .pane.bottom-left{
    grid-area:1/1/2/2!important;
    border-right:none!important;
    border-bottom:1px solid var(--border)!important;
    min-height:300px;
    display:block!important;
  }
  .split-grid.layout-3col .pane.bottom-right{
    grid-area:2/1/3/2!important;
    border-right:none!important;
    border-bottom:1px solid var(--border)!important;
    min-height:300px;
    display:block!important;
  }
  .split-grid.layout-3col .pane.top-left{
    grid-area:3/1/4/2!important;
    border-right:none!important;
    border-bottom:none!important;
    min-height:180px;
    max-height:none!important;
  }
}