:root {
  --bg-color: #050505;
  --accent-color: #00f2ff;
  --text-color: #dffbff;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg-color); color: var(--text-color);
  font-family: "Segoe UI", sans-serif; overflow-x: hidden;
}
#circuitCanvas {
  position: fixed; top: 0; left: 0; width: 100vw; height: 100vh;
  z-index: -1; pointer-events: none;
}
#canvas-container {
  position: relative; z-index: 10; width: 100%; min-height: 100vh;
  display: flex; justify-content: center; align-items: center; padding: 20px;
}

/* Botón Principal (Index) y Módulos (Servicios) */
#main-button, .module-btn {
  width: 200px; height: 200px; display: flex; flex-direction: column;
  justify-content: center; align-items: center; text-align: center;
  background: rgba(0, 0, 0, 0.85); border: 3px solid var(--accent-color);
  color: var(--accent-color); text-decoration: none; font-weight: bold;
  border-radius: 10px; box-shadow: 0 0 15px rgba(0, 242, 255, 0.2);
  transition: all 0.3s ease; padding: 15px;
}
#main-button:hover, .module-btn:hover {
  transform: scale(1.05); background: var(--accent-color); color: #000;
  box-shadow: 0 0 40px var(--accent-color);
}

/* Grid de Módulos */
.services-wrapper { text-align: center; width: 100%; max-width: 1000px; }
.neon-title { 
  text-transform: uppercase; letter-spacing: 5px; margin-bottom: 40px;
  text-shadow: 0 0 10px var(--accent-color);
}
.modules-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px; justify-items: center; margin-bottom: 40px;
}
.module-btn span { font-size: 1.1rem; line-height: 1.2; margin-bottom: 10px; }
.module-btn small { font-weight: normal; font-size: 0.75rem; opacity: 0.8; text-transform: none; }

.back-btn {
  color: var(--accent-color); text-decoration: none; font-size: 0.9rem;
  letter-spacing: 2px; border-bottom: 1px solid transparent; transition: 0.3s;
}
.back-btn:hover { border-bottom: 1px solid var(--accent-color); }

/* Info Overlay Index */
.info-overlay { position: absolute; bottom: 40px; width: 100%; text-align: center; pointer-events: none; }
.info-overlay h1 { font-size: 2rem; letter-spacing: 8px; margin: 0; }
.tagline { color: var(--accent-color); letter-spacing: 3px; font-size: 0.8rem; }