/* ===============================
   Character Selector
   =============================== */
    .character-selector {
      position: absolute;
      top: 1rem;
      left: 50%;
      transform: translateX(-50%);
      z-index: 10;
    }
    .character-selector button {
      background: rgba(0, 0, 0, 0.5);
      color: #fff;
      border: none;
      padding: 0.6em 1em;
      margin: 0 0.5em;
      border-radius: 4px;
      cursor: pointer;
      transition: background 0.2s;
    }
    .character-selector button:hover {
      background: rgba(0, 0, 0, 0.7);
    }
    /* ===============================
   Card Layout
   =============================== */
    .cards {
      width: 100vw;
      height: 100vh;
      position: relative;
    }
    .card {
      display: none;
      flex-direction: row;
      width: 100%;
      height: 100%;
      overflow: hidden;
      font-family: "Yu Mincho", "Hiragino Mincho Pro", serif;
    }
    .card.active {
      display: flex;
    }
    /* --- Card Image Area --- */
    .card__image_area {
      position: relative;
      flex: 1;
    }
    .card__image {
      position: relative;
      width: 100%;
      height: 100%;
      background: #FCFCFC;
    }
    .card__image img {
      position: absolute;
      top: 50%;
      left: 50%;
      width: auto;
      height: 100%;
      transform: translate(-50%, -50%);
      object-fit: cover;
    }
    /* --- Card Body --- */
    .card__body {
      flex: 1;
      padding: 3rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
      background: #fff;
      background-image: url("../img/chara/chara_bg.jpg");
      background-position: bottom right;
      background-size: contain;
      background-repeat: no-repeat;
    }
    .card__tagline {
      font-size: 1.2rem;
      font-weight: bold;
      color: #555;
      margin-bottom: 1.5rem;
      height: 2.5em;
    }
    .card__title {
      font-size: 3rem;
      font-weight: 700;
      color: #2a2a2a;
      letter-spacing: 0.05em;
      display: flex;
      align-items: center;
    }
    .card__furigana {
      font-size: 1.2rem;
      color: #888;
      margin-left: 0.5em;
    }
    .card__stats {
      display: flex;
      flex-wrap: wrap;
      font-size: 1rem;
      margin: 1.5em 0;
      height: 3em;
    }
    .card__stats dt {
      font-weight: bold;
      margin-right: 0.5em;
    }
    .card__stats dd {
      margin-right: 4%;
    }
    .card__profile {
      font-size: 1.1rem;
      color: #444;
      line-height: 1.5;
      margin-bottom: 2rem;
    }
    .card__cta {
      align-self: flex-start;
    }
    .card__button {
      display: inline-block;
      background: #8a2be2;
      color: #fff;
      text-decoration: none;
      padding: 0.8em 2em;
      border-radius: 4px;
      transition: background 0.2s;
      font-size: 1.1rem;
    }
    .card__button:hover {
      background: #7000b0;
    }
    /* ===============================
   Tabs Navigation
   =============================== */
    .content {
      position: relative;
    }
    .tabs {
      display: flex;
      gap: 1rem;
      margin-bottom: 1rem;
    }
    .tab-btn {
      border: none;
      background: transparent;
      padding: 0;
      cursor: pointer;
      transition: transform 0.2s;
    }
    .tab-btn:hover {
      transform: scale(1.05);
    }
    .tab-btn img {
      width: 60px;
      height: 60px;
      object-fit: cover;
      border: 2px solid transparent;
      border-radius: 4px;
    }
    .tab-btn.active img {
      /* 強調色を適用する場合はここに */
    }
    /* ===============================
   Voice Buttons (モダン和風)
   =============================== */
    .chara_sample_voice {
      display: flex;
      gap: 8px;
      padding: 0;
      margin: 0;
      list-style: none;
    }
    .chara_sample_voice .voice-button {
      width: 56px;
      height: 44px;
      background: #fafaf8;
      border-radius: 4px;
      box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
      position: relative;
      cursor: pointer;
      transition: transform 0.2s ease, background 0.3s ease;
    }
    .chara_sample_voice .voice-button:hover {
      transform: scale(1.05);
      background: #ffffff;
    }
    .chara_sample_voice .voice-button::before {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-40%, -50%);
      border-top: 12px solid transparent;
      border-bottom: 12px solid transparent;
      border-left: 18px solid #828282;
    }
    .chara_sample_voice .voice-button.playing::before {
      border: none;
      width: 6px;
      height: 20px;
      background: #828282;
      top: 50%;
      left: 42%;
      transform: translate(-50%, -50%);
    }
    .chara_sample_voice .voice-button.playing::after {
      content: "";
      position: absolute;
      width: 6px;
      height: 20px;
      background: #828282;
      top: 50%;
      left: 58%;
      transform: translate(-50%, -50%);
    }
    .chara_sample_voice .voice-button.h_voice {
      border-color: #E06F9C;
    }
    .chara_sample_voice .voice-button.h_voice::before {
      border-left-color: #E06F9C;
    }
    /* ===============================
   Expression Thumbnails
   =============================== */
    .exp-thumbnails {
      position: absolute;
      top: 0;
      right: 3%;
      display: flex;
      flex-direction: column;
      justify-content: center;
      gap: 8px;
      height: 100%;
    }
    .exp-thumb {
      background: none;
      border: 2px solid transparent;
      border-radius: 50%;
      width: 48px;
      overflow: hidden;
      cursor: pointer;
      transition: border-color 0.2s;
      flex-shrink: 0;
      padding: 0;
    }
    .exp-thumb.active {
      border-color: #9F7DBF;
    }
    .exp-thumb img {
      display: block;
      width: 100%;
      height: auto;
      object-fit: cover;
    }
    /* カード群を重ねるために親を relative に */
    .cards {
      position: relative;
    }
    /* カード要素を重ね配置し、不透明度で切り替え */
    .card {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      display: flex; /* 常にレイアウト上は存在する */
      opacity: 0; /* 初期は見えない */
      transition: opacity 0.5s ease-in-out;
      pointer-events: none; /* 非アクティブ時はクリックなど無効 */
    }
    /* アクティブなカードだけ不透明にする */
    .card.active {
      opacity: 1;
      pointer-events: auto; /* クリックなどを受け付ける */
      /* z-index を上げたい場合はここで指定 */
    }
    /* ===============================
   Responsive Adjustments
   =============================== */
    @media (max-width: 800px) {
		#section3{height: 130vh;}
      .card {
        flex-direction: column;
        height: 100%;
      }
		.cards{
			height: 100%;
		}
      .card__body {
        padding: 2rem;
        justify-content: flex-start;
      }
      .card__stats {
        font-size: 0.8rem;
      }
      .card__title {
        font-size: 2.2rem;
      }
      .card__profile {
        font-size: 1rem;
      }
      .card__tagline {
        font-size: 1rem;
        margin-bottom: 0;
      }
      .exp-thumbnails {
        flex-direction: row;
        top: auto;
        right: auto;
        bottom: 3%;
        left: 50%;
        transform: translateX(-50%);
        flex-direction: row;
        top: auto;
        right: auto;
        bottom: 3%;
        left: 50%;
        transform: translateX(-50%);
        height: auto;
      }
      .exp-thumb {
        width: 40px;
      }
      .exp-thumb img {
        width: 100%;
        height: auto;
      }
      .card__image_area {
        position: relative;
        flex: none;
        height: 50vh;
      }


    }