* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #1e1e2e, #2b2b3d);
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.center { width: 100%; max-width: 520px; padding: 40px 20px; }
h1 { font-size: 2rem; margin-bottom: 8px; text-align: center; }
p { color: #9ca3af; margin-bottom: 40px; text-align: center; }

.list { list-style: none; border-radius: 16px; overflow: hidden; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4); }
.list li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 20px 24px;
  background: #26263a;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  cursor: pointer;
  overflow: hidden;
  transition: color 0.3s ease;
  z-index: 1;
}
.list li:last-child { border-bottom: none; }
.list li::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, #6c63ff, #00d4ff);
  transform: translateX(-101%);
  transition: transform 0.45s ease;
  z-index: -1;
}
.list li:hover::before { transform: translateX(0); }
.list li:hover { color: #fff; padding-left: 34px; }
.list li .icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: #a5a5c4;
  transition: background 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}
.list li:hover .icon { background: rgba(255, 255, 255, 0.2); color: #fff; }
.list li { transition: padding-left 0.35s ease, color 0.3s ease; }