:root {
      --bg: #07090f;
      --panel: rgba(9, 13, 22, 0.8);
      --line: rgba(124, 156, 255, 0.25);
      --text: #eaf0ff;
      --muted: #8fa1c7;
    }

    * { box-sizing: border-box; }
    html, body {
      margin: 0;
      height: 100%;
      background: var(--bg);
      color: var(--text);
      font-family: "Space Grotesk", "Noto Sans", "Noto Sans Arabic", "Noto Sans Hebrew", "Avenir Next", sans-serif;
      overscroll-behavior: none;
    }
    body {
      overflow: hidden;
      touch-action: manipulation;
    }

    button,
    input,
    select {
      touch-action: manipulation;
    }

    #gl {
      position: fixed;
      inset: 0;
      width: 100vw;
      height: 100dvh;
      display: block;
      background: radial-gradient(circle at 30% 20%, #141b32 0%, #06080e 58%, #020205 100%);
    }

    #video {
      position: fixed;
      left: 0;
      top: 0;
      width: 1px;
      height: 1px;
      opacity: 0.01;
      pointer-events: none;
      object-fit: cover;
      clip-path: inset(50%);
      overflow: hidden;
      z-index: 1;
      background: #000;
    }

    #audio { display: none; }

    .hud {
      position: fixed;
      left: max(16px, env(safe-area-inset-left, 0px));
      top: max(16px, env(safe-area-inset-top, 0px));
      z-index: 10;
      width: min(660px, calc(100vw - 32px));
      max-height: min(calc(100dvh - 32px), 820px);
      padding: 14px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: var(--panel);
      backdrop-filter: blur(12px);
      overflow: auto;
      -webkit-overflow-scrolling: touch;
      scrollbar-width: thin;
    }

    .topBar {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 14px;
      margin-bottom: 10px;
      flex-wrap: wrap;
    }

    .introCopy {
      flex: 1 1 280px;
      min-width: 0;
    }

    .row {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 10px;
      flex-wrap: wrap;
    }
    .row:last-child { margin-bottom: 0; }

    .title {
      margin: 0 0 8px 0;
      font-weight: 700;
      letter-spacing: 0.04em;
      font-size: 14px;
      color: #cfe1ff;
      text-transform: uppercase;
    }

    .sub { margin: 0 0 10px 0; color: var(--muted); font-size: 12px; }
    .sub:last-child { margin-bottom: 0; }

    .row--warning {
      margin-bottom: 12px;
    }

    .warningNote {
      margin: 0;
      width: 100%;
      padding: 10px 12px;
      border-radius: 12px;
      border: 1px solid rgba(255, 201, 107, 0.4);
      background: linear-gradient(135deg, rgba(86, 48, 20, 0.62), rgba(34, 21, 9, 0.82));
      color: #ffe8bf;
      font-size: 11px;
      line-height: 1.5;
      box-shadow: inset 0 0 0 1px rgba(255, 239, 191, 0.05);
    }

    .warningNote strong {
      color: #fff4d6;
      font-weight: 700;
    }

    .warningNote a,
    .warningNote a:visited {
      color: #fff4d6;
    }

    label { font-size: 12px; color: #b9c9ea; min-width: 90px; }
    .inlineLabel { min-width: 0; display: inline-flex; align-items: center; gap: 6px; }
    input[type="range"] { width: 170px; }

    .btn {
      border: 1px solid var(--line);
      background: rgba(32, 48, 81, 0.6);
      color: var(--text);
      border-radius: 10px;
      padding: 8px 10px;
      font-size: 12px;
      cursor: pointer;
    }

    .btn:hover { border-color: rgba(160, 185, 255, 0.7); }
    .btn:disabled {
      opacity: 0.45;
      cursor: not-allowed;
      border-color: rgba(124, 156, 255, 0.2);
    }

    .fileInput { display: none; }
    .hint { color: var(--muted); font-size: 12px; }
    .demoNote {
      margin: 0;
      color: var(--muted);
      font-size: 11px;
      line-height: 1.45;
    }
    .demoNote a,
    .demoNote a:visited {
      color: #cfe1ff;
    }

    .srOnly {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }

    .langPicker {
      position: relative;
      display: inline-flex;
      align-items: center;
      min-width: 0;
      max-width: 100%;
    }

    .langGlobe {
      position: absolute;
      left: 12px;
      top: 50%;
      width: 18px;
      height: 18px;
      transform: translateY(-50%);
      color: #8ee3b8;
      animation: spinGlobe 7.2s linear infinite;
      pointer-events: none;
      z-index: 2;
    }

    .langPicker::after {
      content: "";
      position: absolute;
      right: 12px;
      top: 50%;
      width: 11px;
      height: 7px;
      transform: translateY(-50%);
      background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 6'%3E%3Cpath fill='%23d7e1f7' d='M1 1l4 4 4-4'/%3E%3C/svg%3E");
      background-repeat: no-repeat;
      background-size: 100% 100%;
      pointer-events: none;
    }

    .langSelectControl {
      appearance: none;
      border: 1px solid rgba(153, 180, 246, 0.35);
      background: rgba(18, 27, 46, 0.92);
      color: var(--text);
      border-radius: 999px;
      padding: 8px 34px 8px 38px;
      min-width: 150px;
      max-width: min(100%, 200px);
      font-size: 12px;
      font-weight: 700;
      cursor: pointer;
      box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
    }

    .langSelectControl:focus-visible {
      outline: 2px solid rgba(160, 185, 255, 0.85);
      outline-offset: 2px;
    }

    #status {
      font-size: 12px;
      color: #d2ddfa;
      padding: 5px 8px;
      border-radius: 8px;
      background: rgba(117, 147, 219, 0.13);
      border: 1px solid rgba(153, 180, 246, 0.25);
    }

    @keyframes spinGlobe {
      from { transform: translateY(-50%) rotate(0deg); }
      to { transform: translateY(-50%) rotate(360deg); }
    }

    [dir="rtl"] .hud {
      left: auto;
      right: max(16px, env(safe-area-inset-right, 0px));
    }

    [dir="rtl"] .topBar {
      flex-direction: row-reverse;
    }

    [dir="rtl"] .langGlobe {
      left: auto;
      right: 12px;
    }

    [dir="rtl"] .langPicker::after {
      right: auto;
      left: 12px;
    }

    [dir="rtl"] .langSelectControl {
      padding: 8px 38px 8px 34px;
    }

    @media (max-width: 820px) {
      .hud {
        width: calc(100vw - max(16px, env(safe-area-inset-left, 0px)) - max(16px, env(safe-area-inset-right, 0px)));
        left: max(8px, env(safe-area-inset-left, 0px));
        top: max(8px, env(safe-area-inset-top, 0px));
        max-height: min(calc(100dvh - 16px - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px)), 720px);
        padding: 12px;
      }

      [dir="rtl"] .hud {
        left: auto;
        right: max(8px, env(safe-area-inset-right, 0px));
      }

      .langPicker {
        width: 100%;
      }

      .langSelectControl {
        width: 100%;
        max-width: none;
      }

      .row {
        gap: 8px;
      }

      label {
        min-width: 72px;
      }

      input[type="range"] {
        width: min(150px, 45vw);
        flex: 1 1 120px;
      }

      .hint {
        flex: 1 1 100%;
      }

      #status {
        width: 100%;
      }

      .warningNote {
        font-size: 10.5px;
        padding: 9px 10px;
      }
    }

    body.mobile-ui.mobile-playback-focus .hud {
      top: auto;
      left: max(8px, env(safe-area-inset-left, 0px));
      right: max(8px, env(safe-area-inset-right, 0px));
      bottom: max(8px, env(safe-area-inset-bottom, 0px));
      width: auto;
      max-height: 118px;
      padding: 10px 12px;
      background: rgba(9, 13, 22, 0.62);
      backdrop-filter: blur(10px);
      overflow: hidden;
    }

    body.mobile-ui.mobile-playback-focus .topBar,
    body.mobile-ui.mobile-playback-focus .row:not(.row--transport):not(.row--status) {
      display: none;
    }

    body.mobile-ui.mobile-playback-focus .row--transport,
    body.mobile-ui.mobile-playback-focus .row--status {
      display: flex;
      margin-bottom: 0;
    }

    body.mobile-ui.mobile-playback-focus .row--transport {
      gap: 8px;
    }

    body.mobile-ui.mobile-playback-focus .row--transport .btn {
      flex: 1 1 auto;
    }

    body.mobile-ui.mobile-playback-focus #popoutBtn,
    body.mobile-ui.mobile-playback-focus #fsBtn {
      display: none;
    }

    body.mobile-ui.mobile-playback-focus .row--status {
      margin-top: 8px;
    }

    body.mobile-ui.mobile-playback-focus #status {
      width: 100%;
      font-size: 11px;
      padding: 6px 8px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }