/* Buttons, touch controls, settings, rewards, and accessibility modes. */
    .btn {
      border-radius: 999px;
      padding: 8px 18px;
      border: 1px solid rgba(0,255,157,0.4);
      text-transform: uppercase;
      letter-spacing: 0.18em;
      font-size: 0.68rem;
      background: transparent;
      color: inherit;
      cursor: pointer;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    }
    .btn-primary {
      background: linear-gradient(120deg, var(--neon), var(--cyan));
      color: #000;
      box-shadow: 0 0 20px rgba(0,255,157,0.35);
      border-color: transparent;
    }
    .btn:hover {
      transform: translateY(-1px);
      box-shadow: 0 0 18px rgba(0,255,157,0.4);
    }

    .arcade-controls-hint {
      margin-top: 8px;
      text-align: center;
      font-size: 0.5rem;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      opacity: 0.75;
    }
    .touch-toggle {
      margin-top: 6px;
      text-align: center;
      font-size: 0.54rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      opacity: 0.9;
      display: flex;
      gap: 8px;
      justify-content: center;
      flex-wrap: wrap;
    }
    .touch-toggle label {
      display: inline-flex;
      gap: 8px;
      align-items: center;
      border: 1px solid rgba(0,255,157,0.25);
      border-radius: 999px;
      padding: 5px 10px;
      background: rgba(0,0,0,0.35);
      cursor: pointer;
    }
    .touch-toggle input {
      accent-color: var(--neon);
    }

    .mobile-controls {
      position: fixed;
      left: 50%;
      bottom: 10px;
      transform: translateX(-50%);
      z-index: 50;
      display: none;
      gap: 8px;
      align-items: center;
      background: rgba(0, 0, 0, 0.5);
      border: 1px solid rgba(0,255,157,0.2);
      border-radius: 999px;
      padding: 6px;
      backdrop-filter: blur(4px);
    }
    .ctrl {
      width: 46px;
      height: 40px;
      border-radius: 12px;
      border: 1px solid rgba(0,255,157,0.35);
      background: rgba(0,0,0,0.65);
      color: #fff;
      font: inherit;
      font-size: 0.65rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      user-select: none;
      -webkit-user-select: none;
    }
    .ctrl.wide {
      width: 84px;
    }
    .ctrl.attack {
      width: 76px;
    }
    .ctrl:active {
      transform: scale(0.96);
      background: rgba(0,255,157,0.2);
    }
    body.touch-ui .mobile-controls {
      display: flex;
    }
    body.left-handed .mobile-controls {
      flex-direction: row-reverse;
    }
    body.touch-ui .ctrl {
      width: 58px;
      height: 50px;
      font-size: 0.74rem;
    }
    body.touch-ui .ctrl.wide {
      width: 118px;
    }
    body.touch-ui .ctrl.attack {
      width: 96px;
    }
    .touch-only-text {
      display: none;
    }
    body.touch-ui .kbd-only {
      display: none;
    }
    body.touch-ui .touch-only-text {
      display: inline;
    }

    .howto {
      position: fixed;
      inset: 0;
      z-index: 1600;
      display: none;
      align-items: center;
      justify-content: center;
      background: rgba(0,0,0,0.9);
      padding: 16px;
    }
    .howto.show {
      display: flex;
    }
    .howto-card {
      width: min(440px, 96vw);
      border-radius: 16px;
      border: 1px solid var(--panel-border);
      background: rgba(10,10,10,0.95);
      box-shadow: 0 8px 30px rgba(0,0,0,0.8);
      padding: 16px;
    }
    .howto-card h3 {
      margin: 0 0 10px;
      font-size: 0.8rem;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--neon);
      text-align: center;
    }
    .howto-card ul {
      margin: 0 0 12px 18px;
      padding: 0;
      line-height: 1.55;
      font-size: 0.66rem;
      letter-spacing: 0.06em;
    }
    .settings-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin: 0 0 8px;
      align-items: center;
      justify-content: space-between;
      font-size: 0.62rem;
      letter-spacing: 0.07em;
      text-transform: uppercase;
    }
    .settings-row input[type="range"] {
      width: 120px;
    }
    .settings-row label {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .keybind-input {
      width: 56px;
      border: 1px solid rgba(0,255,157,0.35);
      background: rgba(0,0,0,0.5);
      color: #fff;
      border-radius: 6px;
      padding: 4px 6px;
      text-transform: uppercase;
      font-size: 0.6rem;
      letter-spacing: 0.08em;
    }
    .reward-modal {
      position: fixed;
      inset: 0;
      z-index: 1700;
      display: none;
      align-items: center;
      justify-content: center;
      background: rgba(0,0,0,0.86);
      padding: 14px;
    }
    .reward-modal.show {
      display: flex;
    }
    .reward-card {
      width: min(420px, 96vw);
      border-radius: 16px;
      border: 1px solid rgba(0,255,157,0.45);
      background: rgba(0,0,0,0.92);
      box-shadow: 0 8px 30px rgba(0,0,0,0.8);
      padding: 16px;
      text-align: center;
    }
    .reward-code {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      margin: 8px 0;
      min-width: 180px;
      border: 1px dashed rgba(0,255,157,0.6);
      border-radius: 999px;
      padding: 8px 12px;
      font-size: 0.68rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--neon);
    }
    body.reduced-motion * {
      animation: none !important;
      transition-duration: 0s !important;
    }
    body.high-contrast {
      filter: saturate(0.65) hue-rotate(-15deg);
    }
    body.big-touch .ctrl {
      width: 72px !important;
      height: 60px !important;
      font-size: 0.84rem !important;
    }
    body.big-touch .ctrl.wide {
      width: 138px !important;
    }


.quality-select {
  min-width: 118px;
  border: 1px solid rgba(0,255,157,0.35);
  background: rgba(0,0,0,0.72);
  color: #fff;
  border-radius: 8px;
  padding: 6px 8px;
  font: inherit;
  font-size: 0.62rem;
  text-transform: uppercase;
}
body.graphics-low .arcade-lights-overlay { display: none; }
body.graphics-low .fog-overlay { opacity: 0.35; }
body.graphics-medium .arcade-lights-overlay { opacity: 0.34; }
body.graphics-high .arcade-lights-overlay { opacity: 0.56; }