html, body {
  padding: 20px;
}
.open-btn {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  padding: 10px 20px;
  background: #1f2937;
  color: white;
  border-radius: 8px;
  cursor: pointer;
}
.drawer-overlay {
  font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999;
  visibility: hidden;
  transition: visibility 0.3s;
}
.overlay-close {
  position: absolute;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  opacity: 0;
  transition: opacity 0.3s;
}
.drawer-panel {
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 100%;
  background: #fff;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -5px 0 20px rgba(0,0,0,0.1);
  display: flex;
  flex-direction: column;
}
#drawer-toggle:checked ~ .drawer-overlay {
  visibility: visible;
}
#drawer-toggle:checked ~ .drawer-overlay .overlay-close {
  opacity: 1;
}
#drawer-toggle:checked ~ .drawer-overlay .drawer-panel {
  transform: translateX(0);
}
.drawer-header {
  padding: 20px;
  border-bottom: 1px solid #f3f4f6;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.drawer-header h3 {
  margin: 0;
  color: #1f2937;
}
.close-btn {
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
}
.drawer-content {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.drawer-content a {
  text-decoration: none;
  color: #4b5563;
  font-weight: 500;
  transition: color 0.2s;
}
.drawer-content a:hover {
  color: #2563eb;
}