:root {
      --bg-primary: #0a0a0a;
      --bg-secondary: #1a1a1a;
      --accent: #ff6b6b;
      --accent-hover: #ff5252;
      --text-primary: #ffffff;
      --text-secondary: #a0a0a0;
      --border: rgba(255, 255, 255, 0.1);
      --glow: rgba(255, 107, 107, 0.3);
      --font: 'Inter', sans-serif;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: var(--font);
      background: var(--bg-primary);
      color: var(--text-primary);
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      overflow-x: hidden;
      position: relative;
    }

    body::before {
      content: "";
      position: absolute;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 50% 30%, rgba(255, 107, 107, 0.08), transparent 70%);
      z-index: 0;
    }

    .container {
      max-width: 1200px;
      width: 100%;
      padding: 2rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 3rem;
      z-index: 1;
    }

    .header {
      text-align: center;
    }

    .title {
      font-size: 3.5rem;
      font-weight: 300;
      background: linear-gradient(135deg, var(--text-primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .subtitle {
      color: var(--text-secondary);
      font-size: 1.1rem;
    }

    .drum-kit {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
      gap: 1.5rem;
      max-width: 900px;
      width: 100%;
      padding: 2rem;
      border-radius: 20px;
      border: 1px solid var(--border);
      backdrop-filter: blur(8px);
      background: linear-gradient(to right, rgba(255,255,255,0.01), rgba(255,255,255,0.03));
    }

    .drum {
      aspect-ratio: 1;
      background: var(--bg-secondary);
      border: 1px solid var(--border);
      border-radius: 20px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
      backdrop-filter: blur(10px);
    }

    .drum:hover {
      transform: translateY(-4px);
      border-color: var(--accent);
      box-shadow: 0 0 15px var(--accent), 0 0 25px var(--accent-hover);
    }

    .drum:hover .drum-key {
      color: var(--accent);
      transform: scale(1.1);
    }

    .drum.active {
      background: var(--accent);
      border-color: var(--accent);
      transform: translateY(-2px) scale(0.95);
      box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
    }

    .drum-key {
      font-size: 2.5rem;
      font-weight: 500;
      margin-bottom: 0.5rem;
      transition: all 0.3s ease;
    }

    .drum-name {
      font-size: 0.875rem;
      color: var(--text-secondary);
      text-transform: uppercase;
    }

    .footer {
      text-align: center;
      color: var(--text-secondary);
      font-size: 0.875rem;
    }

    .footer a {
      color: var(--accent);
      text-decoration: none;
    }

    .footer a:hover {
      color: var(--accent-hover);
    }

    @media (max-width: 768px) {
      .title {
        font-size: 2.5rem;
      }

      .drum-kit {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 1rem;
      }

      .drum-key {
        font-size: 2rem;
      }
    }

    @keyframes wave {
      0% {
        transform: scale(1);
        opacity: 1;
      }
      100% {
        transform: scale(1.5);
        opacity: 0;
      }
    }

    .drum.wave::after {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 100%;
      height: 100%;
      border: 2px solid var(--accent);
      border-radius: 20px;
      transform: translate(-50%, -50%);
      animation: wave 0.6s ease-out;
    }