/* =====================================================
   漢字スナイパー v1.1.0
   Prefix: ks-  (WordPress テーマ競合防止)
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=BIZ+UDGothic:wght@400;700&family=BIZ+UDMincho&family=Dela+Gothic+One&display=swap');

/* ===== 変数 ===== */
.ks-root {
  --ks-main:    #1e3a5f;
  --ks-main-l:  #2d5a8f;
  --ks-main-d:  #0f1e3a;
  --ks-gold:    #d4af37;
  --ks-gold-l:  #f4cf5f;
  --ks-gold-d:  #a07d10;
  --ks-bg:      #f4f6f9;
  --ks-text:    #2c3e50;
  --ks-border:  #dde3ec;
  --ks-sidebar: 210px;
  --ks-header:  52px;
  font-family: 'BIZ UDGothic', sans-serif;
  color: var(--ks-text);
}

/* ===== ユーティリティ ===== */
.ks-hidden { display: none !important; }

/* ===== ボタン（共通） ===== */
.ks-btn {
  all: unset;
  display: inline-flex; align-items: center; justify-content: center; gap: 5px;
  width: 100%; box-sizing: border-box;
  border-radius: 10px; padding: 10px 14px;
  font-family: 'BIZ UDGothic', sans-serif; font-weight: 700; font-size: .88rem;
  cursor: pointer; transition: all .16s; text-align: center;
}
.ks-btn:disabled { opacity: .4 !important; cursor: not-allowed !important; transform: none !important; filter: none !important; }
.ks-btn-primary { background: linear-gradient(135deg, var(--ks-main-l), var(--ks-main)); color: #fff !important; box-shadow: 0 3px 8px rgba(30,58,95,.3); }
.ks-btn-primary:hover:not(:disabled) { filter: brightness(1.12); transform: translateY(-2px); }
.ks-btn-gold    { background: linear-gradient(135deg, var(--ks-gold-l), var(--ks-gold)); color: var(--ks-main-d) !important; box-shadow: 0 3px 8px rgba(212,175,55,.35); }
.ks-btn-gold:hover:not(:disabled)    { filter: brightness(1.08); transform: translateY(-2px); }
.ks-btn-gray    { background: #7f8c8d; color: #fff !important; }
.ks-btn-gray:hover:not(:disabled)    { background: #636e72; transform: translateY(-1px); }
.ks-btn-danger  { background: #c0392b; color: #fff !important; }
.ks-btn-danger:hover:not(:disabled)  { background: #a93226; transform: translateY(-1px); }

/* =====================================================
   設定画面
   ===================================================== */
.ks-setup {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--ks-main-d);
  overflow-y: auto; padding: 16px; z-index: 9990;
}
.ks-setup-modal {
  background: #fff; border-radius: 20px;
  box-shadow: 0 16px 48px rgba(0,0,0,.45);
  width: 100%; max-width: 560px;
  display: flex; flex-direction: column;
  max-height: calc(100vh - 32px); overflow: hidden;
}
.ks-setup-title {
  text-align: center; padding: 22px 24px 16px;
  font-family: 'Dela Gothic One', sans-serif;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  color: var(--ks-main); letter-spacing: .04em; flex-shrink: 0;
}
.ks-setup-title em { font-style: normal; color: var(--ks-gold-d); }

.ks-grade-tabs { display: flex; gap: 6px; padding: 0 20px 12px; flex-shrink: 0; }
.ks-grade-tab {
  flex: 1; padding: 9px 4px;
  border: 2px solid var(--ks-border); border-radius: 10px;
  background: var(--ks-bg); color: var(--ks-main);
  font-weight: 700; font-size: 1rem; cursor: pointer; text-align: center; transition: all .14s;
}
.ks-grade-tab.ks-active { background: var(--ks-main); color: #fff !important; border-color: var(--ks-main); }

.ks-unit-scroll {
  flex: 1; overflow-y: auto; min-height: 0;
  margin: 0 12px; border: 1.5px solid var(--ks-border);
  border-radius: 12px; background: #fafcff;
}
.ks-unit-item { border-bottom: 1px solid var(--ks-border); }
.ks-unit-item:last-child { border-bottom: none; }
.ks-unit-header {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 16px; background: #f4f7fb;
  cursor: pointer; user-select: none; transition: background .12s;
}
.ks-unit-header:hover { background: #ddeaf8; }
.ks-unit-cb-wrap { display: flex; align-items: center; flex-shrink: 0; }
.ks-unit-cb { width: 17px; height: 17px; accent-color: var(--ks-main); cursor: pointer; margin: 0; }
.ks-unit-name { flex: 1; font-size: .95rem; font-weight: 700; color: var(--ks-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ks-unit-count { font-size: .8rem; color: #999; white-space: nowrap; flex-shrink: 0; }
.ks-unit-toggle { font-size: .65rem; color: #bbb; transition: transform .18s; flex-shrink: 0; }
.ks-unit-toggle.ks-open { transform: rotate(90deg); }
.ks-kanji-grid { display: none; flex-wrap: wrap; gap: 6px; padding: 10px 14px 12px; background: #f0f4fb; border-top: 1px solid var(--ks-border); }
.ks-kanji-grid.ks-open { display: flex; }
.ks-kanji-chip {
  display: flex; align-items: center; gap: 5px; padding: 5px 10px;
  background: #fff; border: 1.5px solid var(--ks-border); border-radius: 8px;
  cursor: pointer; user-select: none; transition: background .1s;
}
.ks-kanji-chip:hover { background: #e4edf8; }
.ks-kanji-chip.ks-checked { background: #dceeff; border-color: var(--ks-main-l); }
.ks-kanji-chip input[type="checkbox"] { width: 14px; height: 14px; accent-color: var(--ks-main); cursor: pointer; margin: 0; }
.ks-kanji-chip span { font-size: 1.3rem; color: var(--ks-main); line-height: 1; }

.ks-sel-count-bar { text-align: right; font-size: .82rem; color: #888; padding: 6px 20px 0; flex-shrink: 0; }
.ks-sel-count-bar strong { color: var(--ks-main); font-size: 1rem; }

.ks-setup-opts { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; padding: 12px 20px 4px; flex-shrink: 0; }
.ks-opt-group { display: flex; flex-direction: column; gap: 6px; }
.ks-opt-label { font-size: .78rem; font-weight: 700; color: #888; letter-spacing: .06em; }
.ks-grid-size-opts { display: flex; gap: 5px; }
.ks-grid-size-btn {
  flex: 1; padding: 8px 4px;
  border: 2px solid var(--ks-border); border-radius: 8px;
  background: var(--ks-bg); color: var(--ks-main);
  font-weight: 700; font-size: .9rem; cursor: pointer; text-align: center; transition: all .13s;
}
.ks-grid-size-btn.ks-active { background: var(--ks-main); color: #fff !important; border-color: var(--ks-main); }
.ks-auto-open-opts { display: flex; flex-direction: column; gap: 5px; }
.ks-auto-open-opts label { display: flex; align-items: center; gap: 7px; cursor: pointer; font-size: .88rem; }
.ks-auto-open-opts input { accent-color: var(--ks-main); width: 15px; height: 15px; }

.ks-start-area { padding: 12px 20px 20px; flex-shrink: 0; }
.ks-start-area .ks-btn { font-size: 1.1rem; padding: 15px; border-radius: 12px; }

/* =====================================================
   ゲーム画面
   ===================================================== */
.ks-game {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  background: linear-gradient(135deg, #fff 0%, var(--ks-bg) 100%);
  z-index: 9980; cursor: none;
}
.ks-game-header {
  background: var(--ks-main); border-bottom: 3px solid var(--ks-gold);
  height: var(--ks-header); display: flex; align-items: center;
  justify-content: space-between; padding: 0 16px; flex-shrink: 0;
}
.ks-game-header h1 {
  all: unset;
  font-family: 'Dela Gothic One', sans-serif; color: #fff !important;
  font-size: 1.1rem; letter-spacing: .05em;
}
.ks-pill-row { display: flex; gap: 7px; }
.ks-pill {
  display: inline-flex; align-items: center; gap: 4px; padding: 4px 11px;
  border-radius: 999px; background: rgba(255,255,255,.13);
  color: #fff !important; font-size: .86rem; font-weight: 700;
}
.ks-pill strong { color: var(--ks-gold-l) !important; font-size: .96rem; }

.ks-game-body {
  flex: 1; display: grid;
  grid-template-columns: var(--ks-sidebar) 1fr var(--ks-sidebar);
  overflow: hidden; min-height: 0;
}

/* ===== 左サイドバー ===== */
.ks-sidebar-left {
  background: #fff; border-right: 2px solid var(--ks-border);
  display: flex; flex-direction: column; padding: 10px; gap: 8px; overflow-y: auto;
}
.ks-sb-section {
  background: var(--ks-bg); border: 1.5px solid var(--ks-border);
  border-radius: 9px; padding: 9px;
}
.ks-sb-section h3 {
  all: unset;
  display: flex; align-items: center; gap: 4px;
  font-size: .78rem; color: var(--ks-main) !important; font-weight: 700 !important;
  margin-bottom: 5px;
}
.ks-sb-section h3::before { content: ''; width: 3px; height: 11px; background: var(--ks-gold); border-radius: 2px; }

/* めくり数 */
.ks-open-num { font-family: 'Dela Gothic One', sans-serif; font-size: 1.7rem; color: var(--ks-main); text-align: center; line-height: 1; margin: 3px 0 1px; }
.ks-open-label { font-size: .7rem; color: #888; text-align: center; }
.ks-open-prog-bar { height: 8px; border-radius: 999px; background: var(--ks-border); overflow: hidden; margin-top: 5px; }
.ks-open-prog-fill { height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--ks-main-l), var(--ks-gold)); transition: width .25s; }

/* 得点 */
.ks-score-display { text-align: center; padding: 6px 0; }
.ks-score-now {
  font-family: 'Dela Gothic One', sans-serif;
  font-size: 2.4rem; line-height: 1; color: var(--ks-gold-d);
  text-shadow: 0 2px 6px rgba(160,125,16,.25);
}
.ks-score-now.ks-bump { animation: ksBump .3s ease; }
.ks-score-max { font-size: .72rem; color: #aaa; margin-top: 1px; }
@keyframes ksBump {
  0%   { transform: scale(1); }
  40%  { transform: scale(1.22); color: var(--ks-gold); }
  100% { transform: scale(1); }
}

/* ===== 答え入力・判定エリア（スクラッチ同仕様） ===== */
.ks-judge-section { display: flex; flex-direction: column; gap: 6px; }

.ks-answer-input {
  all: unset;
  display: block; width: 100%; box-sizing: border-box;
  height: 44px; padding: 0 10px;
  border: 2px solid var(--ks-main-l); border-radius: 8px;
  background: #fff;
  font-family: 'BIZ UDMincho', serif; /* スクラッチと同じフォント */
  font-size: 1.3rem; color: var(--ks-main);
  text-align: center; letter-spacing: 4px;
  transition: border-color .15s;
}
.ks-answer-input:focus { border-color: var(--ks-gold); outline: none; }

.ks-btn-judge {
  background: var(--ks-main) !important; color: #fff !important;
  box-shadow: 0 3px 8px rgba(30,58,95,.3);
  font-size: .92rem; padding: 10px;
}
.ks-btn-judge:hover:not(:disabled) { background: var(--ks-main-l) !important; transform: translateY(-1px); }

/* ボタン群 */
.ks-sb-btns { display: flex; flex-direction: column; gap: 6px; }

/* ===== 中央ステージ ===== */
.ks-stage { display: flex; align-items: center; justify-content: center; padding: 12px 12px 24px; }
.ks-grid-wrap {
  position: relative;
  width: min(calc(100vh - var(--ks-header) - 36px), calc(100vw - var(--ks-sidebar) * 2 - 24px));
  aspect-ratio: 1/1;
}
.ks-grid { position: relative; display: grid; width: 100%; height: 100%; }

.ks-kanji-bg {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  font-family: 'BIZ UDMincho', serif; font-weight: 900; line-height: 1;
  color: var(--ks-text); pointer-events: none; user-select: none; z-index: 0;
}
.ks-cell { position: relative; border: 2px solid var(--ks-main); z-index: 1; overflow: hidden; }
.ks-cover {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-weight: 900; color: rgba(30,58,95,.75);
  user-select: none; cursor: none; z-index: 2;
  background: linear-gradient(145deg, var(--ks-gold-l), var(--ks-gold), var(--ks-gold-d));
  box-shadow: inset 0 2px 6px rgba(255,255,255,.4), inset 0 -2px 6px rgba(0,0,0,.15);
  clip-path: inset(0);
}
.ks-cover:hover:not(.ks-locked) { filter: brightness(1.1); }
.ks-cover.ks-locked { cursor: not-allowed; filter: brightness(.55) saturate(.5); }

@keyframes ksBulletThrough {
  0%   { clip-path: circle(0% at var(--cx) var(--cy)); opacity: 1; }
  100% { clip-path: circle(150% at var(--cx) var(--cy)); opacity: 0; }
}
.ks-cover.ks-shooting {
  animation: ksBulletThrough .38s cubic-bezier(.4,0,.2,1) forwards;
  pointer-events: none;
}

/* 照準カーソル */
#ks-sniper-cursor {
  position: fixed; pointer-events: none; z-index: 9999;
  width: 52px; height: 52px; transform: translate(-50%, -50%);
}
#ks-sniper-cursor svg { width: 100%; height: 100%; }

/* ===== 右サイドバー ===== */
.ks-sidebar-right {
  background: #fff; border-left: 2px solid var(--ks-border);
  display: flex; flex-direction: column; padding: 10px; gap: 8px; overflow-y: auto;
}
.ks-history-list { display: flex; flex-direction: column; gap: 5px; overflow-y: auto; flex: 1; min-height: 0; }
.ks-history-empty { color: #aaa; font-size: .76rem; text-align: center; padding: 10px 0; }
.ks-history-item {
  background: var(--ks-bg); border: 1.5px solid var(--ks-border);
  border-radius: 7px; padding: 6px 8px; display: flex; align-items: center; gap: 7px;
}
.ks-history-kanji { font-family: 'BIZ UDMincho', serif; font-size: 1.45rem; font-weight: 900; color: var(--ks-main); flex-shrink: 0; width: 32px; text-align: center; }
.ks-history-meta { font-size: .74rem; color: #888; line-height: 1.55; }
.ks-history-num { font-weight: 700; color: var(--ks-main); font-size: .82rem; }
.ks-history-score { font-weight: 700; color: var(--ks-gold-d); }
/* 答を見た履歴は薄く */
.ks-history-item.ks-revealed { opacity: .6; }
.ks-history-item.ks-revealed .ks-history-score { color: #aaa; }

/* =====================================================
   結果オーバーレイ
   ===================================================== */
.ks-result {
  position: fixed; inset: 0; z-index: 9995;
  display: flex; align-items: center; justify-content: center;
  background: rgba(15,30,58,.85); padding: 20px;
}
.ks-result-card {
  background: #fff; border: 4px solid var(--ks-gold); border-radius: 20px;
  padding: 24px 28px; max-width: 380px; width: 100%; text-align: center;
  box-shadow: 0 12px 40px rgba(0,0,0,.35);
}
.ks-result-label { font-size: .82rem; color: #888; margin-bottom: 4px; }
.ks-result-kanji { font-family: 'BIZ UDMincho', serif; font-size: clamp(72px, 14vmin, 116px); font-weight: 900; color: var(--ks-main); line-height: 1; margin: 6px 0; }

.ks-result-summary {
  display: flex; align-items: stretch;
  border: 2px solid var(--ks-border); border-radius: 12px;
  overflow: hidden; margin: 10px 0 18px;
}
.ks-result-summary-cell {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center; padding: 10px 8px;
}
.ks-result-summary-cell:first-child { background: #f4f7fb; border-right: 2px solid var(--ks-border); }
.ks-result-summary-cell:last-child  { background: linear-gradient(135deg, #fffbe8, #fff8d6); }
.ks-result-summary-label { font-size: .72rem; color: #999; font-weight: 700; letter-spacing: .05em; margin-bottom: 4px; }
.ks-result-summary-val { font-family: 'Dela Gothic One', sans-serif; font-size: 1.9rem; line-height: 1; color: var(--ks-main); }
.ks-result-summary-val.ks-gold { color: var(--ks-gold-d); }
.ks-result-summary-unit { font-size: .72rem; color: #aaa; margin-top: 3px; }

.ks-result-btns { display: flex; gap: 9px; }
.ks-result-btns .ks-btn { flex: 1; }

/* =====================================================
   フラッシュメッセージ（スクラッチと完全同仕様）
   ===================================================== */
.ks-flash {
  position: fixed; top: 50%; left: 50%;
  transform: translate(-50%, -50%) scale(.5);
  font-family: 'Dela Gothic One', sans-serif;
  font-size: 5rem; padding: 20px 52px; border-radius: 20px;
  opacity: 0; pointer-events: none; z-index: 99999;
  white-space: nowrap;
}
.ks-flash.ks-show-ok     { background: rgba(46,204,113,.95); color: #fff; animation: ksFlash 1.1s  ease forwards; }
.ks-flash.ks-show-ng     { background: rgba(231,76,60,.92);  color: #fff; animation: ksFlash  .85s ease forwards; }
.ks-flash.ks-show-reveal { background: rgba(80,80,80,.88);   color: #fff; animation: ksFlash 1.2s  ease forwards; }
@keyframes ksFlash {
  0%   { opacity: 0; transform: translate(-50%,-50%) scale(.6); }
  20%  { opacity: 1; transform: translate(-50%,-50%) scale(1.08); }
  60%  { opacity: 1; transform: translate(-50%,-50%) scale(1); }
  100% { opacity: 0; transform: translate(-50%,-50%) scale(.9); }
}

@media (max-width: 640px) {
  .ks-root { --ks-sidebar: 150px; }
}

/* =====================================================
   ローディング・エラー
   ===================================================== */
.ks-loading {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 48px 24px; gap: 18px;
}
.ks-spinner {
  width: 48px; height: 48px;
  border: 5px solid var(--ks-border);
  border-top-color: var(--ks-main);
  border-radius: 50%;
  animation: ksSpin .8s linear infinite;
}
@keyframes ksSpin { to { transform: rotate(360deg); } }

.ks-loading-text {
  font-size: .95rem; color: #888; font-weight: 700;
}

.ks-load-error {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 40px 24px; gap: 14px; text-align: center;
}
.ks-load-error-icon { font-size: 2.8rem; line-height: 1; }
.ks-load-error-text { font-size: .95rem; color: #c0392b; font-weight: 700; }
.ks-load-error .ks-btn { width: auto; padding: 10px 28px; }

/* setup-ui はJS制御で ks-hidden を外す */
.ks-setup-ui { display: flex; flex-direction: column; flex: 1; min-height: 0; overflow: hidden; }