:root {
  --primary-color: #0d6efd;
  --primary-hover: #0b5ed7;
  --secondary-color: #6c757d;
  --info-color: #17a2b8;
  --bg-color: #f4f6f8;
  --container-bg: #ffffff;
}

* {
  box-sizing: border-box;
}

body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: Arial, sans-serif;
  background: var(--bg-color);
}

.layout {
  display: flex;
  height: 100vh;
}

/* Menu lateral fixo */
.sidebar {
  width: 300px;
  background: var(--container-bg);
  padding: 20px;
  box-shadow: 2px 0 10px rgba(0,0,0,0.05);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.logo {
  max-width: 180px;
  margin: 0 auto 20px auto;
}

.titulo {
  margin-top: 0;
  color: #2c3e50;
  text-align: center;
}

.subtitulo {
  color: #555;
  font-size: 0.9rem;
  margin-bottom: 20px;
  text-align: center;
}

#paleta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 20px;
}

#paleta button {
  background-color: var(--primary-color);
  color: white;
  padding: 8px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.9rem;
  text-align: left;
}

#paleta button:hover {
  background-color: var(--primary-hover);
}

#form-ambiente {
  background-color: #f8f9fa;
  padding: 15px;
  border-radius: 8px;
}

#form-ambiente label {
  display: block;
  margin-bottom: 10px;
  font-size: 0.9rem;
}

#form-ambiente input {
  width: 100%;
  padding: 5px;
  margin-top: 3px;
}

#form-ambiente button {
  margin-top: 10px;
  width: 100%;
  padding: 6px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

#form-ambiente button:hover {
  background-color: var(--primary-hover);
}

/* Viewport fixa */
.viewport {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #eaecee;
  padding: 20px;
}

/* Janela visível com rolagem */
.canvas-wrapper {
  width: 1000px;
  height: 700px;
  overflow: auto;
  background: white;
  border: 2px solid #ccc;
  border-radius: 8px;
  box-shadow: inset 0 0 4px rgba(0,0,0,0.1);
}

/* Canvas grande */
#canvas {
  width: 8000px;
  height: 8000px;
  display: block;
}