.shapes-container {
  position: relative;
  z-index: 10;
  width: 100%;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

.shapes-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.8);
  border-bottom: 1px solid var(--primary-green);
  flex-shrink: 0;
}

.back-link {
  color: var(--primary-green);
  text-decoration: none;
  font-size: 1.2rem;
  text-shadow: 0 0 10px var(--glow-green);
  transition: all 0.3s ease;
}

.back-link:hover {
  color: var(--glow-green);
  text-shadow: 0 0 20px var(--glow-green);
}

.page-path {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: var(--primary-green);
  text-shadow: 0 0 10px var(--glow-green);
}

.simulator-main {
  flex: 1;
  position: relative;
  display: flex;
  overflow: hidden;
}

#sim-canvas {
  flex: 1;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #0a0a0a 0%, #000000 50%, #0d0d0d 100%);
  box-shadow: inset 0 0 100px rgba(0, 0, 0, 0.8), inset 0 0 50px rgba(0, 221, 0, 0.05);
  border: 1px solid rgba(0, 221, 0, 0.2);
}

.control-toggle {
  position: fixed;
  right: 0;
  top: 40%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.9);
  border: 2px solid var(--primary-green);
  border-right: none;
  color: var(--primary-green);
  font-family: "VT323", monospace;
  font-size: 1.2rem;
  padding: 1rem 0.5rem;
  cursor: pointer;
  text-shadow: 0 0 10px var(--glow-green);
  writing-mode: vertical-rl;
  z-index: 100;
  transition: all 0.3s ease;
}

.control-toggle:hover {
  background: var(--dark-green);
}

.control-toggle.hidden {
  display: none;
}

.control-panel {
  position: fixed;
  right: -320px;
  top: 60px;
  width: 300px;
  height: calc(100vh - 60px);
  background: rgba(0, 0, 0, 0.95);
  border-left: 2px solid var(--primary-green);
  transition: right 0.4s ease;
  z-index: 101;
  overflow-y: auto;
  box-shadow: -5px 0 30px rgba(0, 51, 0, 0.5);
}

.control-panel.active {
  right: 0;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--dark-green);
  border-bottom: 1px solid var(--primary-green);
  font-size: 1.2rem;
  text-shadow: 0 0 10px var(--glow-green);
}

.close-panel {
  background: none;
  border: 1px solid var(--primary-green);
  color: var(--primary-green);
  font-family: "VT323", monospace;
  font-size: 1rem;
  width: 30px;
  height: 30px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.close-panel:hover {
  background: var(--primary-green);
  color: var(--background);
}

.panel-section {
  border-bottom: 1px solid var(--dark-green);
}

.section-header {
  padding: 1rem;
  cursor: pointer;
  font-size: 1.1rem;
  text-shadow: 0 0 5px var(--glow-green);
  transition: all 0.2s ease;
  user-select: none;
}

.section-header:hover {
  background: var(--dark-green);
}

.section-content {
  padding: 0 1rem 1rem;
  display: none;
}

.section-content.active {
  display: block;
}

.sim-btn {
  display: block;
  width: 100%;
  background: none;
  border: none;
  color: var(--primary-green);
  font-family: "VT323", monospace;
  font-size: 1rem;
  padding: 0.6rem;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s ease;
}

.sim-btn:hover {
  background: var(--dark-green);
  padding-left: 1rem;
}

.sim-btn.active {
  color: var(--glow-green);
  text-shadow: 0 0 15px var(--glow-green);
  background: var(--dark-green);
}

.control-group {
  margin-bottom: 1rem;
}

.control-group label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  opacity: 0.8;
}

.control-group input[type="range"] {
  width: calc(100% - 50px);
  height: 6px;
  background: var(--dark-green);
  border: 1px solid var(--primary-green);
  outline: none;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.control-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--primary-green);
  cursor: pointer;
  box-shadow: 0 0 10px var(--glow-green);
}

.control-group input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--primary-green);
  cursor: pointer;
  border: none;
  box-shadow: 0 0 10px var(--glow-green);
}

.control-group .value {
  display: inline-block;
  width: 40px;
  text-align: right;
  font-size: 1rem;
  color: var(--glow-green);
}

@media (max-width: 768px) {
  .shapes-header {
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.8rem 1rem;
  }

  .control-panel {
    right: -100%;
    width: 100%;
    top: auto;
    bottom: 0;
    height: 60vh;
    border-left: none;
    border-top: 2px solid var(--primary-green);
  }

  .control-panel.active {
    right: 0;
  }

  .control-toggle {
    right: 50%;
    transform: translateX(50%);
    top: auto;
    bottom: 20px;
    writing-mode: horizontal-tb;
    border: 2px solid var(--primary-green);
    padding: 0.5rem 2rem;
  }
}