:root {
      --cream: #fff9f0;
      --milk-tea: #e8dccc;
      --caramel: #8a6a56;
      --soft-rose: #ffb7a8;
      --gummy-bg: rgba(255, 245, 236, 0.72);
      --gummy-border: rgba(255, 255, 255, 0.58);
      --gummy-shadow: 0 18px 45px rgba(143, 107, 75, 0.18);
      --gummy-inner: inset 0 1px 0 rgba(255, 255, 255, 0.76), inset 0 -10px 28px rgba(255, 214, 192, 0.32);
    }

    * {
      box-sizing: border-box;
    }

    html, body {
      width: 100%;
      height: 100%;
      margin: 0;
    }

    body {
      overflow: hidden;
      color: var(--caramel);
      font-family: "Segoe Print", "Comic Sans MS", "KaiTi", cursive;
      background: linear-gradient(180deg, var(--cream) 0%, var(--milk-tea) 100%);
      user-select: none;
      -webkit-user-select: none;
    }

    body[data-cursor="pet"] #sceneCanvas {
      cursor: pointer;
    }

    body[data-cursor="drag"] #sceneCanvas {
      cursor: grabbing;
    }

    body[data-cursor="gift"] #sceneCanvas {
      cursor: grab;
    }

    #sceneCanvas {
      position: fixed;
      inset: 0;
      width: 100vw;
      height: 100vh;
      display: block;
      touch-action: none;
      cursor: default;
    }

    .ui {
      position: fixed;
      inset: 0;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 22px 28px 26px;
      pointer-events: none;
    }

    .top-bar,
    .controls,
    .gift-dock,
    .echo-panel {
      pointer-events: auto;
    }

    .top-bar {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      gap: 18px;
    }

    .title-wrap {
      display: flex;
      flex-direction: column;
      gap: 6px;
      padding: 16px 20px;
      border-radius: 26px;
      background: rgba(255, 248, 241, 0.45);
      border: 1px solid rgba(255, 255, 255, 0.45);
      backdrop-filter: blur(14px);
      box-shadow: 0 16px 36px rgba(145, 114, 88, 0.08);
    }

    .title-wrap h1 {
      margin: 0;
      font-size: clamp(26px, 3vw, 36px);
      line-height: 1;
      letter-spacing: 0.04em;
    }

    .title-wrap p {
      margin: 0;
      font-size: 14px;
      opacity: 0.75;
    }

    .mood-panel {
      display: flex;
      flex-wrap: wrap;
      justify-content: flex-end;
      gap: 10px;
      max-width: min(660px, 52vw);
    }

    .mood-button {
      border: 0;
      padding: 12px 18px;
      border-radius: 999px;
      font: inherit;
      color: #7b6151;
      background: var(--gummy-bg);
      backdrop-filter: blur(14px);
      box-shadow: var(--gummy-shadow), var(--gummy-inner);
      transition: transform 180ms ease, box-shadow 180ms ease, background 240ms ease;
      cursor: pointer;
    }

    .mood-button:hover {
      transform: translateY(-2px);
      box-shadow: 0 24px 48px rgba(143, 107, 75, 0.16), var(--gummy-inner);
    }

    .mood-button.active {
      background: rgba(255, 235, 215, 0.92);
      box-shadow: 0 20px 48px rgba(143, 107, 75, 0.19), inset 0 1px 0 rgba(255, 255, 255, 0.84), inset 0 -10px 28px rgba(255, 212, 170, 0.42);
      transform: translateY(-2px);
    }

    .controls {
      align-self: center;
      width: min(1080px, calc(100vw - 34px));
      display: grid;
      grid-template-columns: minmax(280px, 1.15fr) auto;
      align-items: center;
      gap: 18px;
      padding: 16px 20px;
      border-radius: 34px;
      background: rgba(255, 242, 232, 0.7);
      border: 1px solid var(--gummy-border);
      backdrop-filter: blur(18px);
      box-shadow: 0 24px 60px rgba(141, 104, 73, 0.16), var(--gummy-inner);
    }

    .whisper-form {
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
    }

    .whisper-input {
      width: 100%;
      min-width: 0;
      border: 0;
      outline: none;
      height: 48px;
      padding: 0 18px;
      border-radius: 999px;
      background: rgba(255, 248, 242, 0.88);
      color: #6c5345;
      font: inherit;
      box-shadow: inset 0 2px 6px rgba(255, 255, 255, 0.8), inset 0 -8px 18px rgba(241, 209, 185, 0.32);
    }

    .whisper-input::placeholder {
      color: rgba(122, 96, 79, 0.58);
    }

    .send-button {
      border: 0;
      min-width: 70px;
      height: 46px;
      padding: 0 18px;
      border-radius: 999px;
      font: inherit;
      color: #7a5d4a;
      background: rgba(255, 232, 214, 0.92);
      box-shadow: 0 14px 28px rgba(156, 120, 87, 0.14), var(--gummy-inner);
      cursor: pointer;
      transition: transform 160ms ease;
    }

    .send-button:hover {
      transform: translateY(-1px);
    }

    .mood-badge {
      min-width: 160px;
      padding: 12px 18px;
      border-radius: 999px;
      text-align: center;
      font-size: 18px;
      background: rgba(255, 247, 239, 0.86);
      box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78), inset 0 -8px 18px rgba(241, 209, 185, 0.26);
    }

    .icon-button {
      width: 54px;
      height: 54px;
      border: 0;
      padding: 0;
      border-radius: 50%;
      background: rgba(255, 230, 214, 0.92);
      box-shadow: 0 18px 32px rgba(147, 108, 76, 0.16), var(--gummy-inner);
      display: grid;
      place-items: center;
      cursor: pointer;
      transition: transform 180ms ease;
    }

    .icon-button:hover {
      transform: translateY(-2px) scale(1.02);
    }

    .icon-button canvas {
      width: 30px;
      height: 30px;
      display: block;
    }

    .gift-dock {
      position: fixed;
      right: 22px;
      top: 48%;
      transform: translateY(-50%);
      display: flex;
      flex-direction: column;
      gap: 8px;
      align-items: center;
      padding: 10px;
      border-radius: 20px;
      background: rgba(255, 242, 232, 0.74);
      border: 1px solid var(--gummy-border);
      box-shadow: 0 20px 42px rgba(141, 104, 73, 0.16), var(--gummy-inner);
      backdrop-filter: blur(14px);
      z-index: 4;
    }

    .gift-label {
      font-size: 12px;
      color: #7a5d4a;
      white-space: nowrap;
    }

    .echo-panel {
      position: fixed;
      left: 24px;
      bottom: 120px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 14px;
      border-radius: 16px;
      background: rgba(228, 246, 255, 0.74);
      border: 1px solid rgba(166, 211, 232, 0.92);
      box-shadow: 0 16px 38px rgba(72, 121, 146, 0.16);
      backdrop-filter: blur(12px);
      z-index: 4;
    }

    .echo-label {
      font-size: 13px;
      color: #3c6176;
      line-height: 1.3;
      max-width: 150px;
    }

    .hint {
      position: fixed;
      left: 50%;
      top: calc(50% + min(22vw, 180px));
      transform: translateX(-50%);
      padding: 10px 18px;
      border-radius: 999px;
      background: rgba(255, 249, 243, 0.62);
      border: 1px solid rgba(255, 255, 255, 0.58);
      box-shadow: 0 12px 30px rgba(140, 103, 73, 0.1);
      backdrop-filter: blur(10px);
      font-size: 14px;
      letter-spacing: 0.04em;
      opacity: 0.84;
      pointer-events: none;
      transition: opacity 300ms ease;
      z-index: 5;
    }

    @media (max-width: 980px) {
      .ui {
        padding: 16px;
      }

      .top-bar {
        flex-direction: column;
        align-items: stretch;
      }

      .mood-panel {
        justify-content: flex-start;
        max-width: none;
      }

      .controls {
        grid-template-columns: 1fr;
        gap: 14px;
        width: min(720px, calc(100vw - 20px));
      }

      .mood-badge {
        justify-self: center;
      }

      .gift-dock {
        right: 12px;
        top: auto;
        bottom: 170px;
        transform: none;
      }

      .echo-panel {
        left: 12px;
        bottom: 170px;
      }

      .hint {
        top: calc(50% + min(18vw, 140px));
      }
    }