@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700;900&family=Space+Mono:wght@400;700&display=swap');

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

    :root {
      --bg: #07080f;
      --surface: #0d1020;
      --accent: #00ffe1;
      --accent2: #ff4d6d;
      --glow: rgba(0,255,225,0.25);
      --text: #e8eaf6;
      --muted: #5a6080;
    }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'Space Mono', monospace;
      display: flex;
      flex-direction: column;
      align-items: center;
      min-height: 100vh;
      overflow-x: hidden;
    }

    #stars {
      position: fixed;
      inset: 0;
      pointer-events: none;
      z-index: 0;
      background:
        radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.2) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 10%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 80%, rgba(255,255,255,0.2) 0%, transparent 100%),
        radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 15% 90%, rgba(255,255,255,0.2) 0%, transparent 100%),
        radial-gradient(1px 1px at 85% 5%, rgba(255,255,255,0.3) 0%, transparent 100%);
    }

    header {
      position: relative;
      z-index: 2;
      text-align: center;
      padding: 24px 0 8px;
    }

    h1 {
      font-family: 'Orbitron', sans-serif;
      font-size: 2.2rem;
      font-weight: 900;
      letter-spacing: 8px;
      color: var(--accent);
      text-shadow: 0 0 20px var(--accent), 0 0 40px rgba(0,255,225,0.3);
    }

    h1 span { color: var(--accent2); }

    .tagline {
      font-size: 0.7rem;
      letter-spacing: 4px;
      color: var(--muted);
      margin-top: 4px;
      text-transform: uppercase;
    }

    #controls-bar {
      position: relative;
      z-index: 2;
      display: flex;
      gap: 10px;
      margin: 14px 0 10px;
      flex-wrap: wrap;
      justify-content: center;
    }

    .btn {
      font-family: 'Space Mono', monospace;
      font-size: 0.72rem;
      letter-spacing: 2px;
      text-transform: uppercase;
      padding: 8px 18px;
      border: 1px solid var(--muted);
      background: transparent;
      color: var(--text);
      cursor: pointer;
      transition: all 0.2s;
      border-radius: 2px;
    }

    .btn:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 10px var(--glow); }
    .btn.active { border-color: var(--accent); color: var(--accent); background: rgba(0,255,225,0.05); }
    .btn.danger { border-color: var(--accent2); color: var(--accent2); }
    .btn.danger:hover { box-shadow: 0 0 10px rgba(255,77,109,0.3); }

    select {
      font-family: 'Space Mono', monospace;
      font-size: 0.72rem;
      letter-spacing: 2px;
      padding: 8px 14px;
      background: var(--surface);
      color: var(--text);
      border: 1px solid var(--muted);
      border-radius: 2px;
      cursor: pointer;
      text-transform: uppercase;
    }

    select:focus { outline: none; border-color: var(--accent); }

    #arena {
      position: relative;
      z-index: 2;
    }

    canvas {
      display: block;
      border: 1px solid rgba(0,255,225,0.3);
      border-radius: 4px;
      box-shadow: 0 0 30px rgba(0,255,225,0.1), inset 0 0 60px rgba(0,0,0,0.5);
    }

    #hud {
      position: relative;
      z-index: 2;
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 800px;
      max-width: 98vw;
      padding: 10px 0 0;
    }

    .player-label {
      font-size: 0.7rem;
      letter-spacing: 3px;
      text-transform: uppercase;
      color: var(--muted);
    }

    .player-label.p1 { color: var(--accent); }
    .player-label.p2 { color: var(--accent2); }

    #status-msg {
      font-size: 0.65rem;
      letter-spacing: 3px;
      color: var(--muted);
      text-transform: uppercase;
      text-align: center;
    }

    #info-bar {
      position: relative;
      z-index: 2;
      display: flex;
      gap: 24px;
      margin: 10px 0 18px;
      font-size: 0.65rem;
      color: var(--muted);
      letter-spacing: 2px;
    }

    #info-bar span { white-space: nowrap; }

    /* Overlay screens */
    #overlay {
      position: absolute;
      inset: 0;
      background: rgba(7,8,15,0.88);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      z-index: 10;
      border-radius: 4px;
    }

    #overlay h2 {
      font-family: 'Orbitron', sans-serif;
      font-size: 2.4rem;
      font-weight: 900;
      letter-spacing: 6px;
      margin-bottom: 8px;
    }

    #overlay p { font-size: 0.75rem; letter-spacing: 3px; color: var(--muted); margin-bottom: 20px; }
    #overlay .sub { font-size: 0.65rem; letter-spacing: 2px; color: var(--muted); margin-top: 12px; }

    .win-label { text-shadow: 0 0 30px currentColor; }