/* ============================================================
   縦画面モード (840x1600) — 共通
   ============================================================ */
#app.portrait-mode .screen {
    padding: 0;
}

/* セットアップ画面（旧） */
#app.portrait-mode #setup-screen {
    padding: 40px 40px;
    justify-content: center;
}

.top-bg-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.top-bg-img {
    width: 100%;
    height: 100%;
    object-fit: fill;
    opacity: 0.6;
}

.title-img {
    margin-bottom: 0;
}

#app.portrait-mode .screen-title-img {
    display: block;
    width: 500px;
    max-width: 80%;
    height: auto;
    margin: 30px auto 16px;
}

#app.portrait-mode #top-screen .title-img {
    width: 100%;
    height: 100%;
    margin-bottom: 0;
    object-fit: cover;
}

#app.portrait-mode .setup-container {
    background: linear-gradient(180deg, rgba(28, 38, 70, 0.95) 0%, rgba(12, 16, 38, 0.98) 100%);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(79, 172, 254, 0.22);
    display: flex;
    flex-direction: column;
    gap: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

#app.portrait-mode .input-group label {
    font-size: 28px;
    margin-bottom: 12px;
}

#app.portrait-mode input[type="text"] {
    font-size: 40px;
    padding: 20px;
}

#app.portrait-mode .toggle-btn,
#app.portrait-mode .checkbox-btn {
    font-size: 36px;
    padding: 20px;
}

#app.portrait-mode #start-btn {
    /* 【縦画面】バトルスタートボタンのサイズ調整用 */
    font-size: 55px !important;
    padding: 50px 20px !important;
    margin-top: 20px;
}

#app.portrait-mode #note-btn {
    /* 【縦画面】モンスターノートボタンのサイズ調整用 */
    font-size: 30px !important;
    padding: 10px 10px !important;
    height: 80px !important;
    margin: 0;
    align-self: auto;
    flex: none;
    width: 300px !important;
}


#app.portrait-mode .setup-footer {
    margin-top: auto;
    font-size: 20px;
    color: #5a6275;
    text-align: center;
}

/* ============================================================
   トップ画面 (縦画面)
   ============================================================ */
#app.portrait-mode #top-screen {
    padding: 0;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* ライセンス表記オーバーレイ（タイトル画像前面最下部） */
#app.portrait-mode #top-screen .setup-footer {
    position: absolute;
    bottom: 20px;
    left: 0;
    right: 0;
    z-index: 10;
    margin-top: 0;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    background: rgba(8, 11, 22, 0.35);
    padding: 10px 20px;
    border-radius: 8px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    max-width: 80%;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(79, 172, 254, 0.3);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

/* タイトル画面専用（ゲームスタートボタンのみ） */
#app.portrait-mode .top-title-only {
    gap: 0;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* メイン画面 */
#app.portrait-mode #main-screen {
    padding: 0 40px;
    align-items: center;
    justify-content: center;
    position: relative;
}

#app.portrait-mode .top-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    flex: 1;
    position: relative;
    z-index: 1;
}

#app.portrait-mode .top-title-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    height: 100%;
}

#app.portrait-mode #top-screen .title-img {
    width: 100%;
    height: 100%;
    margin-bottom: 0;
    object-fit: cover;
}

#app.portrait-mode #top-screen .subtitle {
    font-size: 28px;
    margin-bottom: 40px;
}

#app.portrait-mode .top-menu {
    width: 80%;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

#app.portrait-mode .top-battle-btn {
    font-size: 68px !important;
    width: 100%;
}

#app.portrait-mode .top-menu-row {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

#app.portrait-mode .top-menu-row button {
    width: 100%;
}


/* メインメニューボタンのフォント色を白に統一 */
#app.portrait-mode #main-screen .top-menu button {
    color: #ffffff;
}

/* ============================================================
   セットアップ画面 back button (縦画面)
   ============================================================ */
#app.portrait-mode #setup-screen {
    position: relative;
}

/* ============================================================
   じょうほうウィンドウ（縦画面）
   ============================================================ */
#app.portrait-mode .info-content {
    width: 740px;
    padding: 44px 52px 52px;
}

#app.portrait-mode .info-section-title {
    font-size: 38px;
    margin: 0 0 18px;
}

#app.portrait-mode .info-row {
    font-size: 38px;
    padding: 10px 0;
    gap: 20px;
}

#app.portrait-mode .info-close-btn {
    font-size: 54px;
    padding: 20px 80px;
    margin-top: 8px;
}