/* 将棋β SPEC.md §6 準拠スタイル */

:root {
  --c-board: #f0c060;
  --c-line: #5a3a1a;
  --c-piece: #f5deb3;
  --c-piece-text: #111111;
  --c-promoted: #c62828;
  --c-cursor: #ffd54f;
  --c-selected: rgba(255, 213, 79, 0.55);
  --c-target: rgba(66, 165, 245, 0.45);
  --c-last: rgba(255, 152, 0, 0.35);
  --c-hint: #42a5f5;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: #15151a;
  overflow: hidden;
}

#stage, #stage * {
  box-sizing: border-box;
}

/* ---------- 6.1 ステージ ---------- */

#stage {
  position: fixed;
  left: 0;
  top: 0;
  width: 1280px;
  height: 720px;
  transform-origin: 0 0;
  background: #2b2b33;
  overflow: hidden;
  font-family: "Segoe UI", Meiryo, sans-serif;
  font-size: 16px;
  color: #fff;
}

#stage > div {
  position: absolute;
}

/* 共通パネル調（枠のあるもの以外） */
#gotePanel, #sentePanel, #keys, #msg, #promo, #menu {
  background: rgba(0, 0, 0, 0.45);
  border-radius: 6px;
}

/* ---------- 6.2 部品の配置 ---------- */

#files {
  left: 370px;
  top: 8px;
  width: 540px;
  height: 20px;
  display: flex;
}
#files span {
  width: 60px;
  line-height: 20px;
  font-size: 14px;
  text-align: center;
}

#board {
  left: 370px;
  top: 30px;
  width: 540px;
  height: 540px;
}

#ranks {
  left: 914px;
  top: 30px;
  width: 20px;
  height: 540px;
  display: flex;
  flex-direction: column;
}
#ranks span {
  height: 60px;
  line-height: 60px;
  font-size: 14px;
  text-align: center;
}

#gotePanel {
  left: 40px;
  top: 30px;
  width: 300px;
  height: 250px;
  padding: 12px;
}

#sentePanel {
  left: 940px;
  top: 320px;
  width: 300px;
  height: 250px;
  padding: 12px;
}

#keys {
  left: 940px;
  top: 580px;
  width: 300px;
  height: 60px;
  padding: 6px 12px;
  font-size: 13px;
  line-height: 1.5;
}

#msg {
  left: 370px;
  top: 574px;
  width: 540px;
  height: 24px;
  padding: 2px 10px;
  font-size: 16px;
  line-height: 20px;
  white-space: nowrap;
  overflow: hidden;
}

#band {
  left: 190px;
  top: 604px;
  width: 900px;
  height: 100px;
  padding: 12px 20px;
  background: rgba(20, 40, 90, 0.9);
  border: 2px solid #7aa7ff;
  border-radius: 6px;
  font-size: 18px;
  line-height: 1.4;
}
#band[hidden] {
  display: none;
}

#promo {
  left: 490px;
  top: 270px;
  width: 300px;
  height: 90px;
  padding: 10px;
  text-align: center;
}
#promo .ask {
  margin: 0 0 10px;
  font-size: 16px;
}
#promo .choices {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 20px;
}
/* ★ボタンは中身の幅で置く（横幅いっぱいに伸ばさない）／★色は必ず指定する */
#promo button {
  width: 120px;
  height: 36px;
  flex: none;
  font-family: inherit;
  font-size: 16px;
  color: #ffffff;
  background: #3a3a48;
  border: 2px solid #6a6a7a;
  border-radius: 4px;
  cursor: pointer;
}
#promo button.cursor {
  border-color: var(--c-cursor);
  box-shadow: inset 0 0 0 3px var(--c-cursor);
}

#menu {
  left: 440px;
  top: 200px;
  width: 400px;
  height: 240px;
  padding: 12px 16px;
}
#menu h2 {
  margin: 0 0 10px;
  font-size: 22px;
  font-weight: bold;
}
#menu .row {
  height: 32px;
  line-height: 32px;
  font-size: 20px;
  padding: 0 8px;
}
#menu .row.cursor {
  background: rgba(255, 213, 79, 0.3);
}

#banner {
  left: 0;
  top: 290px;
  width: 1280px;
  height: 140px;
  background: rgba(0, 0, 0, 0.75);
  text-align: center;
  padding-top: 20px;
}
#banner .line1 {
  font-size: 44px;
  font-weight: bold;
  margin-bottom: 10px;
}
#banner .line2 {
  font-size: 22px;
  margin-bottom: 8px;
}
#banner .line3 {
  font-size: 16px;
}

#title {
  left: 0;
  top: 0;
  width: 1280px;
  height: 720px;
  background: rgba(0, 0, 0, 0.7);
  text-align: center;
}
#title .ttl {
  position: absolute;
  left: 0;
  top: 200px;
  width: 100%;
  font-size: 48px;
  font-weight: bold;
}
#title .opt {
  position: absolute;
  left: 0;
  width: 100%;
  font-size: 28px;
}
#title .opt-tutorial {
  top: 330px;
}
#title .opt-free {
  top: 390px;
}
#title .opt.cursor::before {
  content: "▶ ";
}
#title .help {
  position: absolute;
  left: 0;
  top: 470px;
  width: 100%;
  font-size: 16px;
}

/* ---------- 6.3 マスと駒 ---------- */

.sq {
  position: absolute;
  width: 60px;
  height: 60px;
  background: var(--c-board);
  border: 1px solid var(--c-line);
}

.piece {
  position: absolute;
  left: 7px;
  top: 5px;
  width: 46px;
  height: 50px;
  clip-path: polygon(50% 0%, 100% 22%, 88% 100%, 12% 100%, 0% 22%);
  background: var(--c-piece);
  color: var(--c-piece-text);
  font-size: 24px;
  font-weight: bold;
  line-height: 50px;
  text-align: center;
}
.piece.promoted {
  color: var(--c-promoted);
}
.piece.gote {
  transform: rotate(180deg);
}

/* マスの強調（複数同時可） */
.sq.cursor {
  box-shadow: inset 0 0 0 3px var(--c-cursor);
}
.sq.selected {
  background: var(--c-selected);
}
.sq.target {
  background: var(--c-target);
}
.sq.last {
  background: var(--c-last);
}
.sq.hint-from,
.sq.hint-to {
  border: 3px dotted var(--c-hint);
}

/* ---------- 6.4 パネルと駒台 ---------- */

.chip {
  position: relative;
  display: inline-block;
  width: 46px;
  height: 50px;
  margin-right: 6px;
  clip-path: polygon(50% 0%, 100% 22%, 88% 100%, 12% 100%, 0% 22%);
  background: var(--c-piece);
  color: var(--c-piece-text);
  font-size: 24px;
  font-weight: bold;
  line-height: 50px;
  text-align: center;
}
.chip:last-child {
  margin-right: 0;
}
.chip .count {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 12px;
  font-weight: normal;
}
.chip.cursor {
  box-shadow: inset 0 0 0 3px var(--c-cursor);
}
.chip.selected {
  background: var(--c-selected);
}

/* ---------- band の内訳（Tutorial.show が組み立てる） ---------- */

#band .next {
  position: absolute;
  right: 20px;
  bottom: 12px;
  font-size: 14px;
  color: var(--c-cursor);
}
#band .page {
  position: absolute;
  left: 20px;
  bottom: 12px;
  font-size: 14px;
}

/* hidden 属性は全要素で非表示にする。アニメーションは一切付けない */
[hidden] {
  display: none;
}