Tab Menu / 10 レトロゲーミング

デザイン見本

Tab 1
Tab 2
Tab 3

Good morning. This is the content of Tab 1.

Hello. This is the content of Tab 2.

Good evening. This is the content of Tab 3.

80年代のレトロゲームやSF映画を彷彿とさせる、黒×グリーンの端末風デザイン。スキャンラインやグリッチノイズの演出が、マニアックな世界観を作り出します。エンジニア向けブログやガジェット紹介サイトで、他にはない個性を放ちます。

実装コード

HTML

<div class="tab-container">
  <ul>
    <li class="selected" data-id="tab-1">Tab 1</li>
    <li data-id="tab-2">Tab 2</li>
    <li data-id="tab-3">Tab 3</li>
  </ul>
  <div class="tab-content selected" id="tab-1">
    Tab 1 のコンテンツ
  </div>
  <div class="tab-content" id="tab-2">
    Tab 2 のコンテンツ
  </div>
  <div class="tab-content" id="tab-3">
    Tab 3 のコンテンツ
  </div>
</div>

CSS

.tab-container {
  overflow: hidden;
  border-radius: 8px;
  position: relative;
  background: #0a0a0a;
  border: 3px solid #00ff00;
  box-shadow: 
      0 0 20px rgba(0, 255, 0, 0.5),
      inset 0 0 20px rgba(0, 255, 0, 0.1);
  z-index: 2;
}

.tab-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
      repeating-linear-gradient(
          0deg,
          transparent,
          transparent 2px,
          rgba(0, 255, 0, 0.03) 2px,
          rgba(0, 255, 0, 0.03) 4px
      );
  pointer-events: none;
  z-index: 1;
}

.tab-container ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  background: #000;
  border-bottom: 2px solid #00ff00;
  position: relative;
  z-index: 2;
}

.tab-container ul::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
      transparent 0%, 
      #00ff00 50%, 
      transparent 100%);
  animation: scanLine 2s linear infinite;
}

.tab-container ul li {
  flex: 1;
  padding: 16px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  color: #00ff00;
  font-family: 'Orbitron', 'Courier New', 'Courier', monospace;
  font-weight: 700;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-right: 1px solid #00ff00;
  background: #000;
  overflow: hidden;
}

.tab-container ul li:last-child {
  border-right: none;
}

.tab-container ul li::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
      transparent 0%, 
      rgba(0, 255, 0, 0.2) 50%, 
      transparent 100%);
  transition: left 0.5s ease;
}

.tab-container ul li:hover::before {
  left: 100%;
}

.tab-container ul li.selected {
  color: #000;
  background: #00ff00;
  box-shadow: 
      0 0 15px rgba(0, 255, 0, 0.8),
      inset 0 0 10px rgba(0, 0, 0, 0.3);
  text-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  animation: selectedPulse 1.5s ease-in-out infinite alternate;
}

@keyframes selectedPulse {
  from { 
      box-shadow: 
          0 0 15px rgba(0, 255, 0, 0.8),
          inset 0 0 10px rgba(0, 0, 0, 0.3);
  }
  to { 
      box-shadow: 
          0 0 25px rgba(0, 255, 0, 1),
          inset 0 0 10px rgba(0, 0, 0, 0.3);
  }
}

.tab-container ul li.selected::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: #00ff00;
  box-shadow: 0 0 10px rgba(0, 255, 0, 0.8);
}

.tab-container ul li:not(.selected):hover {
  background: rgba(0, 255, 0, 0.1);
  color: #00ff00;
  text-shadow: 0 0 8px rgba(0, 255, 0, 0.8);
  transform: translateY(-1px);
}

.tab-container .tab-content {
  display: none;
  padding: 24px;
  min-height: 150px;
  background: #000;
  color: #00ff00;
  font-family: 'Orbitron', 'Courier New', 'Courier', monospace;
  font-size: 14px;
  line-height: 1.6;
  position: relative;
  z-index: 2;
  border: 1px solid #00ff00;
  border-top: none;
}

.tab-container .tab-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
      transparent 0%, 
      #00ff00 50%, 
      transparent 100%);
  animation: scanLine 3s linear infinite;
}

@keyframes scanLine {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.tab-container .tab-content::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
      repeating-linear-gradient(
          90deg,
          transparent,
          transparent 2px,
          rgba(0, 255, 0, 0.02) 2px,
          rgba(0, 255, 0, 0.02) 4px
      );
  pointer-events: none;
}

.tab-container .tab-content.selected {
  display: block;
  animation: retroFadeIn 0.4s ease;
}

@keyframes retroFadeIn {
  from { 
      opacity: 0; 
      transform: translateY(-10px);
      filter: blur(2px);
  }
  to { 
      opacity: 1; 
      transform: translateY(0);
      filter: blur(0);
  }
}

const tabContainer = document.querySelector('.tab-container');
const tabMenuItems = tabContainer.querySelectorAll('ul li');
const tabContents = tabContainer.querySelectorAll('.tab-content');

tabMenuItems.forEach(tabMenuItem => {
  tabMenuItem.addEventListener('click', () => {
    tabMenuItems.forEach(item => {
      item.classList.remove('selected');
    });
    tabMenuItem.classList.add('selected');

    tabContents.forEach(tabContent => {
      tabContent.classList.remove('selected');
    });
    document.getElementById(tabMenuItem.dataset.id).classList.add('selected');
  });
});