/* ==========================================
   Sub Category - Prototype Submarine
   専用スタイル
========================================== */

/* ===== アクセントカラー ===== */
:root{
  --sub-accent: #7dff6b;
}

/* ==========================================
   アップグレード一覧
========================================== */

.sub-upgrades{
  margin-top: 60px;
  text-align: left;
}

.sub-upgrades h2{
  font-size: 26px;
  margin-bottom: 35px;
}

/* ===== グリッド ===== */

.upgrade-grid{
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 28px;
  max-width: 1200px;
  margin: 0 auto;
}

/* ===== カード ===== */

.upgrade-card{
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;

  height: 260px;

  background: rgba(10, 35, 50, 0.85);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(0, 180, 255, 0.25);
  border-radius: 14px;
  padding: 20px 14px 18px;
  cursor: pointer;

  transition: transform 0.25s ease,
              border-color 0.25s ease,
              box-shadow 0.25s ease;
}

.upgrade-card:hover{
  transform: translateY(-6px);
  border-color: color-mix(in srgb, var(--sub-accent) 70%, transparent);
  box-shadow: 0 0 22px color-mix(in srgb, var(--sub-accent) 40%, transparent);
}

/* ===== アイコン ===== */

.upgrade-card img{
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 14px;
  margin-bottom: 18px;

  background: rgba(0,0,0,0.35);
  padding: 10px;
}

/* ===== タイトル ===== */

.upgrade-card h3{
  color: var(--sub-accent);
  font-size: 15px;
  line-height: 1.4;
  font-weight: 600;

  height: 42px; /* 2行固定 */
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}


/* ==========================================
   モーダル
========================================== */

.sub-modal{
  position: fixed;
  inset: 0;
  display: none;
  z-index: 9999;
}

.sub-modal.is-open{
  display: block;
}

.sub-modal__overlay{
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(2px);
}

/* ===== パネル ===== */

.sub-modal__panel{
  position: relative;
  width: min(920px, calc(100% - 40px));
  margin: 60px auto;

  background: rgba(10, 18, 28, 0.96);
  border: 1px solid rgba(120, 210, 255, 0.28);
  border-radius: 14px;
  box-shadow: 0 18px 60px rgba(0,0,0,0.55);

  color: #eaf6ff;
  overflow: hidden;
}

/* ===== 閉じるボタン ===== */

.sub-modal__close{
  position: absolute;
  top: 14px;
  right: 16px;

  width: 38px;
  height: 38px;
  border: none;
  border-radius: 10px;

  background: rgba(255,255,255,0.06);
  color: #eaf6ff;
  font-size: 22px;

  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.sub-modal__close:hover{
  background: rgba(255,255,255,0.12);
  transform: translateY(-1px);
}

/* ===== ヘッダー ===== */

.sub-modal__header{
  padding: 24px 26px 10px;
  text-align: left;
}

.sub-modal__title{
  margin: 0;
  font-size: 26px;
  font-weight: 800;
  color: var(--sub-accent);
}

.sub-modal__eng{
  margin: 6px 0 0;
  opacity: 0.85;
  font-size: 15px;
}

/* ===== 本文 ===== */

.sub-modal__body{
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 26px;
  padding: 16px 26px 30px;
}

.sub-modal__figure{
  margin: 0;
}

.sub-modal__figure img{
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid rgba(140, 220, 255, 0.18);
}

.sub-modal__text{
  text-align: left;
  font-size: 15px;
  line-height: 1.9;
}

/* 背景スクロール防止 */

body.modal-lock{
  overflow: hidden;
}


/* ===== モーダル本文 ===== */

.sub-modal__content{
  padding: 20px 28px 32px  28px;
  overflow-y: auto;
}

/* 本文の段落に余白（これが一番確実） */
.sub-modal__content p{
  margin: 0;
  padding-right: 20px; /* 好みで 12〜20px */
}

.sub-modal__section{
  margin-top: 22px;
}

.sub-modal__section h4{
  color: var(--sub-accent);
  font-size: 15px;
  margin-bottom: 8px;
  font-weight: 700;
}

.sub-modal__section p{
  font-size: 15px;
  line-height: 1.9;
  opacity: 0.95;
}

/* ヘッダー英語名をやや淡色に */
.sub-modal__eng{
  opacity: 0.7;
  font-size: 15px;
  margin-top: 6px;
}

/* モーダル本体を画面内に収める */
.sub-modal__panel {
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}

/* ヘッダーは固定 */
.sub-modal__header {
  flex: 0 0 auto;
}

/* 本文だけスクロールさせる */
.sub-modal__content {
  flex: 1 1 auto;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch; /* スマホ用 */
  padding-right: 6px; /* スクロールバー分の余裕 */
}

.sub-modal__content {
  scrollbar-width: thin; /* Firefox */
}

.sub-modal__content::-webkit-scrollbar {
  width: 6px;
}

.sub-modal__content::-webkit-scrollbar-thumb {
  background: rgba(0, 255, 150, 0.4);
  border-radius: 3px;
}


/* ==========================================
   Sub Upgrades : Z順フェードイン
========================================== */

/* 初期状態：隠す（JSで is-inview を付けたら表示） */
.sub-upgrades .upgrade-card{
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .55s ease, transform .55s ease;
  will-change: opacity, transform;
}

/* 表示状態 */
.sub-upgrades.is-inview .upgrade-card{
  opacity: 1;
  transform: translateY(0);
}

/* 遅延（JSが --delay を付ける） */
.sub-upgrades .upgrade-card{
  transition-delay: var(--delay, 0ms);
}

/* ユーザー設定：動きを減らす */
@media (prefers-reduced-motion: reduce){
  .sub-upgrades .upgrade-card{
    transition: none;
    opacity: 1;
    transform: none;
  }
}


/* ==========================================
   レスポンシブ
========================================== */

@media (max-width: 1100px){
  .upgrade-grid{
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 800px){
  .sub-modal__body{
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px){
  .upgrade-grid{
    grid-template-columns: repeat(2, 1fr);
  }

  .sub-modal__panel{
    margin: 30px auto;
  }
}


/* ==========================================
   Sub UI Guide (Piloting UI)
========================================== */

.sub-ui-guide{
  margin-top: 70px;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 10px;
}

.sub-ui-guide h2{
  text-align: left;
  font-size: 26px;
  margin-bottom: 14px;
}



/* ---- block ---- */

.sub-ui-block{
  background: rgba(10, 18, 28, 0.55);
  border: 1px solid rgba(120, 210, 255, 0.16);
  border-radius: 14px;
  padding: 22px 22px;
  margin-bottom: 26px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.25);
}

.sub-ui-grid{
  display: grid;
  gap: 26px;
  align-items: center;
}

/* PC優先：①は画像を大きめ、②③は均等 */
.sub-ui-grid--main{
  grid-template-columns: 1.4fr 1fr;
}
.sub-ui-grid--half{
  grid-template-columns: 1fr 1fr;
}

/* ---- figure ---- */

.sub-ui-figure{
  position: relative;
  margin: 0;
}

.sub-ui-figure img{
  width: 100%;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(140, 220, 255, 0.18);
}

.sub-ui-figure figcaption{
  margin-top: 10px;
  font-size: 13px;
  opacity: 0.85;
}

/* ---- pins (番号マーカー) ---- */

.ui-pin{
  position: absolute;
  width: 34px;
  height: 34px;
  border-radius: 999px;
  display: grid;
  place-items: center;

  background: rgba(10, 18, 28, 0.85);
  border: 1px solid color-mix(in srgb, var(--sub-accent) 60%, transparent);
  color: var(--sub-accent);
  font-weight: 800;
  font-size: 16px;

  box-shadow: 0 0 18px color-mix(in srgb, var(--sub-accent) 30%, transparent);
}

/* 位置は“このセクションの画像”に合わせて後で微調整してください */
.ui-pin--a{ left: 50%; top: 46%; transform: translate(-50%, -50%); } /* ①中央 */
.ui-pin--b{ right: 8%; top: 52%; }                                  /* ②右寄り */
.ui-pin--c{ left: 8%; top: 52%; }                                   /* ③左寄り */

/* ---- text ---- */

.sub-ui-text h3{
  margin: 0 0 10px;
  font-size: 20px;
  color: var(--sub-accent);
}

.sub-ui-text p{
  margin: 0 0 12px;
  line-height: 1.9;
  opacity: 0.95;
}

.sub-ui-list{
  margin: 0;
  padding-left: 1.1em;
  line-height: 1.9;
}

.sub-ui-note{
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(20, 40, 60, 0.55);
  border: 1px solid rgba(120, 210, 255, 0.14);
  line-height: 1.8;
}

/* ---- DL (用語解説) ---- */

.sub-ui-dl{
  margin: 0;
  display: grid;
  gap: 12px;
}

.sub-ui-dl > div{
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(20, 40, 60, 0.45);
  border: 1px solid rgba(120, 210, 255, 0.12);
}

.sub-ui-dl dt{
  font-weight: 800;
  color: color-mix(in srgb, var(--sub-accent) 70%, #ffffff);
  margin-bottom: 4px;
}

.sub-ui-dl dd{
  margin: 0;
  line-height: 1.85;
  opacity: 0.95;
}

/* ---- responsive ---- */
@media (max-width: 900px){
  .sub-ui-grid--main,
  .sub-ui-grid--half{
    grid-template-columns: 1fr;
  }

  /* スマホだとピンが邪魔な場合があるので薄める */
  .ui-pin{
    opacity: 0.75;
    transform: none;
  }
}

/* ===== 中央画面：ピン位置（専用） ===== */
.pinset-center .ui-pin--a{
  /* ①は今のままなら不要。残すなら現在値をここへ */
  left: 35%;
  top: 46%;
  transform: translate(-50%, -50%);
}

/* ③：上側赤丸（方角） */
.pinset-center .ui-pin--c{
  left: 45%;
  top: 9.0%;
  transform: translate(-50%, -50%);
}

/* ②：下側赤丸（選択アップグレード表示位置） */
.pinset-center .ui-pin--b{
  left: 45%;
  top: 19.5%;
  transform: translate(-50%, -50%);
}

/* ===== 右側UI：ピン位置（専用） ===== */
.pinset-right .ui-pin--a{
  left: 56%;
  top: 30%;
  transform: translate(-50%, -50%);
}

.pinset-right .ui-pin--b{
  left: 75%;
  top: 40%;
  transform: translate(-50%, -50%);
}

.pinset-right .ui-pin--c{
  left: 70%;
  top: 85%;
  transform: translate(-50%, -50%);
}

/* ===== 左側UI：ピン位置（専用） ===== */
.pinset-left .ui-pin--a{
  left: 32%;
  top: 20%;
  transform: translate(-50%, -50%);
}

.pinset-left .ui-pin--b{
  left: 38%;
  top: 60%;
  transform: translate(-50%, -50%);
}

.pinset-left .ui-pin--c{
  left: 25%;
  top: 85%;
  transform: translate(-50%, -50%);
}


.ui-pin{
  animation: uiPulse 2.5s infinite ease-in-out;
}

@keyframes uiPulse{
  0%,100% { box-shadow: 0 0 10px rgba(125,255,107,0.4); }
  50% { box-shadow: 0 0 22px rgba(125,255,107,0.9); }
}


/* ===== Structure：左右レイアウト ===== */
.sub-structure-row{
  display: grid;
  grid-template-columns: 1.25fr 0.95fr; /* 左文多め */
  gap: 22px;
  align-items: start;
  margin-top: 12px;
}

.sub-structure-text p{
  margin: 0;
  line-height: 1.9;
}

.sub-structure-media{
  margin: 0;
}

.sub-structure-media img{
  width: 100%;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(140, 220, 255, 0.18);
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
}

.sub-structure-media figcaption{
  margin-top: 8px;
  font-size: 13px;
  opacity: 0.85;
}

/* エンジンルーム用：画像縦並び */
.sub-structure-media-stack{
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ===== モバイルは縦積み ===== */
@media (max-width: 900px){
  .sub-structure-row{
    grid-template-columns: 1fr;
  }
}


/* ===== プロトタイプ専用セクション ===== */

.mod-vehicle-feature {
  margin: 80px 0;
  text-align: center;
}

.mod-vehicle-feature h2 {
  margin-bottom: 40px;
}

/* 中央固定ラッパ */
.vehicle-feature-wrap {
  display: flex;
  justify-content: center;
}

/* カード本体 */
.vehicle-feature-card {
  display: block;
  width: min(640px, 90%);
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(
    180deg,
    rgba(0, 30, 40, 0.9),
    rgba(0, 10, 20, 0.95)
  );
  box-shadow: 0 0 40px rgba(0, 255, 200, 0.15);
  transition: transform 0.35s ease, box-shadow 0.35s ease;
  text-decoration: none;
}

/* 画像 */
.vehicle-feature-card img {
  width: 100%;
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* キャプション */
.vehicle-feature-caption {
  padding: 20px 24px;
}

.vehicle-feature-caption h3 {
  margin: 0;
  font-size: 1.6rem;
  color: #00ffe0;
}

.vehicle-feature-caption p {
  margin: 6px 0 0;
  font-size: 0.95rem;
  color: #a0eaff;
  opacity: 0.8;
}

/* ホバー演出（特別感） */
.vehicle-feature-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 0 60px rgba(0, 255, 200, 0.35);
}


.energy-order {
  list-style: none;
  padding-left: 0;
}

.energy-order li::before {
  content: "＞ ";
  color: #00e0ff;
}