:root {
  --bg-dark: #000;
  --bg-panel: #111;
  --accent: #ffaa00;
  --accent-light: #ffcc33;
  --text-light: #fff;
  --text-muted: #ccc;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Vazirmatn', 'Roboto', sans-serif;
  direction: rtl;
  background-color: var(--bg-dark);
  color: var(--text-light);
  line-height: 1.6;
}

.container {
  background-image: url("https://raw.githubusercontent.com/EDTA1000/-PowerPoint-Python-Codes-and-Libraries/refs/heads/main/a.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  padding: 40px 20px;
  text-align: center;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.8);
}

.container h2, .container p {
  color: var(--text-light);
}
#preview {
  margin-top: 8px;
  font-size: 1.2em;
  color: var(--accent);
  text-align: left;
  direction: ltr;
  font-family: monospace;
}
#threeDContainer {
  width: 800px;
  height: 600px;
  margin: 0 auto;
}

.download-btn {
  display: inline-block;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: bold;
  border-radius: 10px;
  background: var(--accent);
  color: var(--text-light);
  text-decoration: none;
  margin-top: 10px;
  transition: all 0.3s ease;
}
.download-btn:hover {
  background: var(--accent-light);
  color: var(--bg-dark);
}

#controls {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 10;
  background: rgba(0, 0, 0, 0.85);
  padding: 15px;
  border-radius: 12px;
  box-shadow: 0 0 12px var(--accent);
  width: 340px;
}

input, select, button {
  width: 100%;
  margin: 6px 0;
  padding: 10px;
  font-size: 1em;
  background-color: #222;
  color: var(--text-light);
  border: 1px solid #555;
  border-radius: 6px;
  transition: background 0.3s ease, color 0.3s ease;
}
button:hover, select:hover, input:focus {
  background-color: var(--accent);
  color: var(--bg-dark);
  outline: none;
}

#canvasWrapper {
  position: relative;
  margin-top: 20px;
  background-color: var(--bg-dark);
  min-height: 600px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

#gridCA, #gridMath, #threeDContainer {
  position: absolute;
  top: 0;
}

canvas {
  display: block;
  background-color: #000;
  border: 1px solid #333; 
  max-width: 100%;
}

#mathControls {
  margin: 40px 20px;
  padding: 20px;
  background-color: var(--bg-panel);
  border-radius: 12px;
  box-shadow: 0 0 8px var(--accent);
}

#output {
  margin-top: 10px;
  font-size: 1.2em;
  direction: ltr;
  text-align: left;
  color: var(--accent);
  font-family: monospace;
}

.math-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 10px;
  margin-top: 20px;
}
.math-buttons button {
  padding: 10px;
  font-size: 0.9em;
  background-color: #222;
  color: var(--text-light);
  border: 1px solid #555;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
}
.math-buttons button:hover {
  background-color: var(--accent);
  color: var(--bg-dark);
  transform: translateY(-2px);
}

.math-symbols {
  margin-top: 15px;
  display: flex;
  gap: 12px;
  justify-content: center;
}
.math-symbols button {
  flex: 1;
  padding: 8px;
  border-radius: 6px;
}