body {
  background: #0b0e11;
  color: #e0e0e0;
  font-family: "Inter", sans-serif;
  margin: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

header {
  background: #1c1f24;
  padding: 0.75rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.6);
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

h1 {
  font-size: 1.25rem;
  margin: 0;
  color: #fff;
  letter-spacing: -0.5px;
}

h1 a {
  text-decoration: none;
  color: inherit;
}

h1 a:hover {
  opacity: 0.8;
}

.badge {
  background: #c23c2a;
  color: white;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
}

.controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.config-btn {
  background: #2a2e35;
  color: #888;
  padding: 0.5rem 1rem;
  border: 1px solid #3f444e;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

.config-btn:hover {
  border-color: #555c69;
  color: #ccc;
}

.config-btn.active {
  background: #c23c2a;
  color: #fff;
  border-color: #c23c2a;
  box-shadow: 0 0 15px rgba(194, 60, 42, 0.3);
}

#grid-container {
  position: relative;
  flex-grow: 1;
  overflow: auto;
  padding: 0;
  background-color: #0b0e11;
  background-image: radial-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

#scale-wrapper {
  position: relative;
  transform-origin: top left;
}

.category {
  position: absolute;
  background: rgba(28, 31, 36, 0.9);
  border: 1px solid #3f444e;
  border-radius: 0;
  padding: 6px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
}

.category-header {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 12px;
  border-bottom: 1px solid #3f444e;
  padding-bottom: 8px;
  color: #ffd700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  gap: 4px;
}

.hero-box {
  background: linear-gradient(135deg, #2a2e35 0%, #1c1f24 100%);
  border: 1px solid #3f444e;
  color: #eee;
  font-size: 0.5rem;
  font-weight: 800;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  border-radius: 4px;
  text-align: center;
  overflow: hidden;
  padding: 0 4px;
  letter-spacing: -0.2px;
  cursor: default;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.02);
  word-break: break-word;
  overflow-wrap: anywhere;
  line-height: 1.1;
}

.hero-box:hover {
  background: #c23c2a;
  color: #fff;
  border-color: #f04a35;
  transform: translateY(-2px);
  box-shadow:
    0 4px 8px rgba(0, 0, 0, 0.5),
    0 0 10px rgba(194, 60, 42, 0.4);
}