body {
  margin: 0;
  padding: 0;
  font-family: 'Share Tech Mono', monospace;
  background-color: #000;
  color: #00ff88;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* 更新：mainの最大幅を広げる */
main {
  padding: 2rem;
  max-width: 1200px;
  margin: auto;
}

h1, h4, label, p, select, input, textarea {
  color: #00ff88;
}

h1 {
  text-align: center;
  font-size: 1.8rem;
  padding: 10px 0;
  border-bottom: 2px solid #00ff88;
  background-color: #111;
  margin: 0;
}

h2,h3,h4 {
  background: #111;
  color: #00ff88;
  padding: 10px;
  border-right: 2px solid #00ff88;
}


/* 横並びに整列しやすいように調整 */
.palette {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

input.color-input {
  flex: 1 1 120px;
  min-width: 120px;
  height: 50px;
  padding: 0;
  border: none;
}

.palette button {
  flex: 1 1 140px;
  min-width: 140px;
}

/* threePalette セクション */
.threePalette {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-family: 'Share Tech Mono', monospace;
  font-size: 1.2rem;
  background: #222;
  padding: 1rem;
  margin-top: 1rem;
  border-radius: 8px;
  white-space: nowrap;
  overflow-x: auto;
}

/* カラーコード表示ボックス */
.color-box {
  width: 150px;
  height: 150px;
  margin: 0.5rem;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  position: relative;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.1);
}

.color-code {
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 0.3rem 0.6rem;
  font-size: 0.85rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
}

/* 履歴・お気に入り表示 */
.item-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.item {
  background: #333;
  padding: 0.6rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-family: 'Share Tech Mono', monospace;
  font-size: 0.9rem;
  border: 1px solid #555;
  white-space: nowrap;
  user-select: none;
}

.item:hover {
  background: #444;
  border-color: #00cc88;
}

/* favName input とボタン横並び対応 */
#favName {
  width: 100%;
  max-width: 400px;
}

section > button {
  margin-right: 0.5rem;
}

.threeColorGeneratorSection {
  background-color: rgba(10, 10, 10, 0.8);
  padding:20px;
}
.allClearButton { 
  margin: 10px;
  padding:20px;
}

input.text-input,
input[type="text"] {
  width: 100%;
  max-width: 400px;
  padding: 0.6rem 1rem;
  font-size: 1rem;
  font-family: 'Noto Sans JP', sans-serif;
  border: 1px solid #444;
  border-radius: 6px;
  background-color: #1a1a1a;
  color: #fff;
  box-sizing: border-box;
  margin-bottom: 1rem;
}
button {
  background: #00ff88;
  color: #000;
  border: none;
  padding: 10px 20px;
  margin-left: 4px;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  border-radius: 3px;
}

button:hover {
  background: #33ffaa;
}

/* メディアクエリでスマホにも対応 */
@media screen and (max-width: 600px) {
  .palette, .item-list {
    flex-direction: column;
  }

  .threePalette {
    font-size: 1rem;
  }

  .color-box {
    width: 90px;
    height: 90px;
  }
}