/* 華麗なる対策室 — 大きく読める・スマホ対応・魔法の切替・見えるエフェクト。
   画像は image/ 全点＋BackgroundForgeの香煙(smoke)と燭光ボケ(bokeh)。 */
* { box-sizing: border-box; margin: 0; }
:root {
  --bg: #0a0e0c;
  --panel: rgba(19, 25, 22, .93);
  --panel2: #1b241f;
  --line: #2c3b34;
  --line-gold: #4d4231;
  --text: #efeee7;
  --dim: #a8b4ab;
  --green: #237049;
  --green-soft: #163b2c;
  --red-soft: #3f2029;
  --silver: #d6dcd2;
  --accent: #86dcaa;
  --candle: #e4c07a;
  --candle-dim: #9b8150;
  --serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  --sans: "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
  --wrap: 880px;
}
html { -webkit-text-size-adjust: 100%; }
body {
  background:
    radial-gradient(1200px 560px at 85% -5%, rgba(228, 192, 122, .09), transparent 60%),
    radial-gradient(1000px 640px at 8% 8%, rgba(35, 112, 73, .20), transparent 60%),
    radial-gradient(1300px 1000px at 50% 112%, rgba(35, 112, 73, .13), transparent 55%),
    var(--bg);
  color: var(--text); font-family: var(--sans);
  line-height: 1.9; font-size: 18px;
  min-height: 100dvh; display: flex; flex-direction: column;
  position: relative; overflow-x: hidden;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: url("assets/manor.jpg") center 12% / cover no-repeat; opacity: .09;
  -webkit-mask-image: linear-gradient(180deg, #000 0%, rgba(0,0,0,.35) 45%, transparent 82%);
          mask-image: linear-gradient(180deg, #000 0%, rgba(0,0,0,.35) 45%, transparent 82%);
}

/* ---- 見えるエフェクト：燭光ボケ（金）＋香煙。どちらもscreen合成 ---- */
#bokeh {
  position: fixed; inset: -10%; z-index: 0; pointer-events: none;
  background: url("assets/bokeh.jpg") center / cover no-repeat;
  mix-blend-mode: screen; opacity: .5;
  animation: bokehFloat 30s ease-in-out infinite alternate;
}
@keyframes bokehFloat {
  0%   { transform: scale(1.05) translate(-1.5%, 0); opacity: .38; }
  50%  { opacity: .58; }
  100% { transform: scale(1.14) translate(2%, -2%); opacity: .44; }
}
#smoke {
  position: fixed; inset: -20% -10% auto -10%; height: 92vh; z-index: 0; pointer-events: none;
  background: url("assets/smoke.jpg") center top / cover no-repeat;
  mix-blend-mode: screen; opacity: .22;
  animation: smokeDrift 46s ease-in-out infinite alternate;
}
@keyframes smokeDrift {
  0% { transform: translate3d(-3%, 0, 0) scale(1.05); opacity: .14; }
  50% { opacity: .28; }
  100% { transform: translate3d(4%, 3%, 0) scale(1.18); opacity: .18; }
}
#embers { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
#embers i {
  position: absolute; bottom: -10px; width: 3px; height: 3px; border-radius: 50%;
  background: var(--candle); opacity: 0; animation: rise linear infinite;
  box-shadow: 0 0 8px 1px rgba(228, 192, 122, .6);
}
@keyframes rise {
  0% { transform: translateY(0) translateX(0) scale(1); opacity: 0; }
  8% { opacity: .85; } 60% { opacity: .45; }
  100% { transform: translateY(-108vh) translateX(var(--drift, 30px)) scale(.4); opacity: 0; }
}

/* ---- 魔法の切替：呪文の閃光（1回だけ・遷移は二重にしない） ---- */
#spell-flash {
  position: fixed; inset: 0; z-index: 60; pointer-events: none; opacity: 0;
  background:
    radial-gradient(120% 80% at 50% 45%, rgba(134, 220, 170, .20), transparent 55%),
    radial-gradient(60% 40% at 50% 42%, rgba(228, 192, 122, .16), transparent 60%);
}
#spell-flash.cast { animation: cast .5s ease-out; }
@keyframes cast { 0% { opacity: 0; } 30% { opacity: 1; } 100% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { #embers, #smoke, #bokeh { animation: none; } #spell-flash.cast { animation: none; } }

header, main, footer { position: relative; z-index: 1; }

/* ---- ヘッダー ---- */
#site-head {
  display: flex; align-items: center; gap: 15px;
  padding: 16px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--line-gold);
  background: linear-gradient(180deg, rgba(24, 31, 27, .97), rgba(13, 17, 15, .97));
  box-shadow: 0 1px 26px rgba(228, 192, 122, .06);
  position: sticky; top: 0; z-index: 40;
}
#brand { display: flex; align-items: center; gap: 15px; text-decoration: none; color: var(--text); margin-right: auto; }
.crest { width: 56px; height: 56px; flex-shrink: 0; object-fit: contain; filter: drop-shadow(0 0 10px rgba(228, 192, 122, .4)); }
.brand-text { display: flex; flex-direction: column; line-height: 1.3; }
.brand-top { font-size: 13px; color: var(--dim); letter-spacing: .14em; }
.brand-main {
  font-family: var(--serif); font-size: clamp(21px, 4.6vw, 27px); font-weight: 600; letter-spacing: .05em; white-space: nowrap;
  background: linear-gradient(100deg, var(--silver) 20%, #fff3d6 40%, var(--silver) 60%);
  background-size: 200% 100%; -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: sheen 7s ease-in-out infinite;
}
@keyframes sheen { 0%, 100% { background-position: 180% 0; } 50% { background-position: 0 0; } }
#nav { display: flex; gap: 6px; }
#nav a {
  color: var(--dim); text-decoration: none; font-size: 16px;
  padding: 10px 16px; border-radius: 999px; border: 1px solid transparent;
  font-family: var(--serif); letter-spacing: .05em; white-space: nowrap;
}
#nav a:hover { color: var(--text); border-color: var(--line); }
#nav a.active { color: var(--candle); border-color: var(--line-gold); background: rgba(228, 192, 122, .08); }
#nav-toggle {
  display: none; background: none; border: 1px solid var(--line-gold); color: var(--candle);
  font-size: 24px; border-radius: 10px; width: 50px; height: 50px; cursor: pointer; line-height: 1;
}

/* ---- 本文 ---- */
#app { flex: 1; width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 30px clamp(16px, 4vw, 30px) 60px; }
#app.materializing { animation: materialize .4s cubic-bezier(.2, .7, .2, 1); }
@keyframes materialize { 0% { opacity: 0; transform: translateY(12px); } 100% { opacity: 1; transform: none; } }

.loading { color: var(--dim); padding: 64px 0; text-align: center; font-family: var(--serif); font-size: 18px; }
.loading img { display: block; width: 92px; margin: 0 auto 16px; filter: drop-shadow(0 0 14px rgba(134, 220, 170, .45)); animation: bob 3s ease-in-out infinite; }
@keyframes bob { 50% { transform: translateY(-6px); } }
h1 { font-family: var(--serif); font-size: clamp(26px, 6vw, 34px); margin: 4px 0 20px; font-weight: 600; letter-spacing: .04em; color: var(--silver); }
h1 .sub { font-family: var(--sans); color: var(--dim); font-size: 15px; letter-spacing: 0; display: inline-block; }
.sub { color: var(--dim); font-size: 15px; }

/* ---- ホーム：玄関ヒーロー ---- */
.hero {
  position: relative; margin: 2px 0 28px; border-radius: 12px; overflow: hidden;
  border: 1px solid var(--line-gold); box-shadow: 0 12px 46px rgba(0, 0, 0, .55);
}
.hero > img.manor { display: block; width: 100%; height: clamp(230px, 44vw, 380px); object-fit: cover; object-position: center 18%; }
.hero .veil {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,14,12,.12) 0%, rgba(10,14,12,.5) 55%, rgba(10,14,12,.96) 100%);
  display: flex; flex-direction: column; justify-content: flex-end; padding: clamp(20px, 4vw, 32px);
}
.hero .motto { font-family: var(--serif); letter-spacing: .16em; color: var(--candle); font-size: clamp(13px, 3vw, 16px); margin-bottom: 8px; text-shadow: 0 0 12px rgba(0,0,0,.85); }
.hero .motto-ja { font-family: var(--serif); color: var(--silver); font-size: clamp(20px, 5vw, 28px); text-shadow: 0 1px 10px rgba(0,0,0,.9); }

.cane-rule { height: 82px; margin: 4px auto 28px; max-width: 400px; background: url("assets/cane.png") center / contain no-repeat; opacity: .92; filter: drop-shadow(0 0 8px rgba(120, 180, 210, .3)); }

/* 家訓の額（背景に血脈＝ルシウスとドラコを薄く） */
.topic {
  position: relative; border: 1px solid var(--line-gold); border-radius: 4px;
  padding: 28px clamp(22px, 4vw, 34px); margin: 8px 0 30px; overflow: hidden;
  background: var(--panel); font-family: var(--serif); color: var(--silver); font-size: 18.5px; line-height: 2.05;
  box-shadow: inset 0 0 0 4px var(--bg), inset 0 0 0 5px var(--line-gold), 0 6px 30px rgba(0, 0, 0, .5);
}
.topic::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: url("assets/draco.jpg") center 20% / cover no-repeat; opacity: .16;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 40%, #000 70%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 40%, #000 70%, transparent);
}
.topic .quote { position: relative; z-index: 1; display: block; }
.topic::before { content: "❦"; position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--bg); padding: 0 12px; color: var(--candle); font-size: 17px; z-index: 2; }

.section-title { font-family: var(--serif); font-size: 21px; color: var(--silver); letter-spacing: .06em; margin: 8px 0 16px; display: flex; align-items: center; gap: 11px; }
.section-title::before { content: ""; width: 24px; height: 24px; background: url("assets/sigil.png") center/contain no-repeat; flex-shrink: 0; }

/* 扉のカード */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 16px; }
.card {
  position: relative; display: block; background: var(--panel); border: 1px solid var(--line);
  border-radius: 8px; padding: 24px 22px; text-decoration: none; color: var(--text);
  transition: border-color .2s, box-shadow .2s, transform .2s; overflow: hidden;
}
.card::after { content: ""; position: absolute; inset: 4px; pointer-events: none; border: 1px solid rgba(214, 220, 210, .08); border-radius: 4px; }
.card:hover { border-color: var(--candle-dim); box-shadow: 0 0 28px rgba(228, 192, 122, .13), inset 0 0 20px rgba(228, 192, 122, .05); transform: translateY(-3px); }
.card b { font-family: var(--serif); font-size: 20px; display: block; margin-bottom: 9px; color: var(--silver); letter-spacing: .05em; }
.card b::before { content: "✦ "; color: var(--candle); font-size: 14px; vertical-align: 2px; }
.card span { color: var(--dim); font-size: 15.5px; }

/* ---- 登場人物紹介（ルシウスのみ） ---- */
.persona { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px; }
.pcard {
  border: 1px solid var(--line-gold); border-radius: 12px; overflow: hidden;
  background: var(--panel2); box-shadow: 0 8px 30px rgba(0,0,0,.5);
}
.pcard .pic { position: relative; aspect-ratio: 3/4; overflow: hidden; }
.pcard.wide .pic { aspect-ratio: 16/10; }
.pcard .pic img { width: 100%; height: 100%; object-fit: cover; object-position: center 20%; transition: transform .5s ease; }
.pcard:hover .pic img { transform: scale(1.05); }
.pcard .pic::after { content: ""; position: absolute; inset: 0; background: linear-gradient(transparent 55%, rgba(12,15,12,.85)); }
.pcard .body { padding: 16px 18px 20px; }
.pcard .pname { font-family: var(--serif); color: var(--candle); font-size: 18px; letter-spacing: .05em; margin-bottom: 8px; }
.pcard .pdesc { font-size: 15.5px; color: #d9ddd4; line-height: 1.9; }

/* ---- 問題/一覧ヘッダー背景（セクションごとに別の画像） ---- */
.qhead-bg { position: relative; margin: -4px 0 18px; padding: 24px clamp(18px,3vw,26px); border-radius: 10px; overflow: hidden; border: 1px solid var(--line); }
.qhead-bg::before { content: ""; position: absolute; inset: 0; background: url("assets/gathering.jpg") center 30%/cover no-repeat; opacity: .3; }
.qhead-bg.today::before { background-image: url("assets/draco2.jpg"); background-position: center 22%; }
.qhead-bg.library::before { background-image: url("assets/draco3.jpg"); background-position: center 28%; }
.qhead-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,14,12,.5), rgba(10,14,12,.9)); }
.qhead-bg > * { position: relative; }

.qmeta { display: flex; align-items: center; gap: 12px; color: var(--dim); font-size: 15px; margin-bottom: 14px; flex-wrap: wrap; }
.qid { font-family: ui-monospace, monospace; background: var(--panel2); padding: 2px 11px; border-radius: 5px; border: 1px solid var(--line); }
.chip { border: 1px solid var(--line); border-radius: 999px; padding: 3px 13px; font-size: 14px; color: var(--accent); }
.qcard {
  position: relative; background: var(--panel); border: 1px solid var(--line); border-radius: 8px;
  padding: 26px clamp(18px, 3vw, 30px); box-shadow: 0 8px 36px rgba(0, 0, 0, .45);
}
.qcard::before, .qcard::after { content: ""; position: absolute; width: 30px; height: 30px; pointer-events: none; border-color: var(--candle-dim); border-style: solid; }
.qcard::before { top: 8px; left: 8px; border-width: 1px 0 0 1px; }
.qcard::after { bottom: 8px; right: 8px; border-width: 0 1px 1px 0; }
.qtext { font-size: clamp(19px, 4.8vw, 22px); margin-bottom: 22px; line-height: 1.9; }
.opts { display: flex; flex-direction: column; gap: 13px; }
.opt {
  display: flex; gap: 15px; align-items: baseline; text-align: left;
  background: var(--panel2); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 16px 18px; font-size: 18px; line-height: 1.7; cursor: pointer; font-family: inherit;
  transition: border-color .15s, box-shadow .15s; min-height: 56px;
}
.opt:hover:not(:disabled) { border-color: var(--candle-dim); box-shadow: 0 0 16px rgba(228, 192, 122, .09); }
.opt:disabled { cursor: default; opacity: .96; }
.opt .kana { font-family: var(--serif); font-weight: 700; color: var(--candle); flex-shrink: 0; font-size: 20px; }
.opt.correct { border-color: var(--accent); background: var(--green-soft); box-shadow: 0 0 22px rgba(134, 220, 170, .15); }
.opt.wrong { border-color: #86465a; background: var(--red-soft); }

.result { margin-top: 24px; border-top: 1px solid var(--line-gold); padding-top: 22px; position: relative; animation: materialize .45s ease; }
.result::before { content: "✦"; position: absolute; top: -11px; left: 50%; transform: translateX(-50%); background: var(--panel); padding: 0 12px; color: var(--candle); font-size: 13px; }
.verdict { font-family: var(--serif); font-size: 22px; font-weight: 700; margin-bottom: 14px; letter-spacing: .06em; }
.verdict.ok { color: var(--accent); text-shadow: 0 0 18px rgba(134, 220, 170, .35); }
.verdict.ng { color: #e892a8; }
.verdict span { font-weight: 400; font-size: 16px; }
/* 解説＝古い羊皮紙から読み上げる質感（parchmentを極薄で敷く） */
.ref { position: relative; color: #dbdfd6; font-size: 16.5px; line-height: 1.9; padding: 16px 18px; border-radius: 6px; overflow: hidden; }
.ref::before {
  content: ""; position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: url("assets/parchment.jpg") center / cover no-repeat; opacity: .07;
  -webkit-mask-image: radial-gradient(120% 100% at 50% 40%, #000 60%, transparent);
          mask-image: radial-gradient(120% 100% at 50% 40%, #000 60%, transparent);
}
.ref > * { position: relative; z-index: 1; }
.ref p { margin: 11px 0; }
.ref .note { color: var(--dim); }
.ref .label { color: var(--silver); font-weight: 600; }

/* 当主の言 */
.lucius {
  position: relative; margin-top: 24px; padding: 20px 22px 18px 80px;
  border: 1px solid var(--line-gold); border-radius: 6px;
  background: linear-gradient(165deg, rgba(228, 192, 122, .06), rgba(16, 22, 19, .6) 45%);
  font-family: var(--serif); font-size: 17.5px; line-height: 2; color: #ebe7da;
  box-shadow: 0 0 24px rgba(228, 192, 122, .07);
}
.lucius::before {
  content: ""; position: absolute; left: 15px; top: 18px; width: 48px; height: 48px; border-radius: 50%;
  background: url("assets/lucius.jpg") center / cover no-repeat; border: 1px solid var(--line-gold);
  box-shadow: inset 0 1px 4px rgba(0, 0, 0, .6), 0 0 12px rgba(228, 192, 122, .3);
}
.lucius .who { display: block; font-size: 13px; color: var(--candle-dim); margin-bottom: 6px; letter-spacing: .18em; }
.noref { margin-top: 16px; color: var(--dim); font-size: 15px; font-family: var(--serif); }

/* 操作 */
.actions { display: flex; gap: 12px; margin-top: 24px; align-items: center; flex-wrap: wrap; }
button.primary, a.primary {
  background: linear-gradient(180deg, #2b7f57, var(--green)); color: #eafff2; border: 1px solid #3a9366;
  border-radius: 8px; padding: 14px 28px; font-size: 17px; cursor: pointer; text-decoration: none;
  font-family: inherit; box-shadow: 0 0 18px rgba(35, 112, 73, .3); min-height: 52px;
}
button.primary:hover { filter: brightness(1.12); box-shadow: 0 0 26px rgba(134, 220, 170, .25); }
button.ghost, a.ghost {
  background: none; border: 1px solid var(--line); color: var(--dim); border-radius: 8px;
  padding: 12px 20px; font-size: 15px; cursor: pointer; text-decoration: none; font-family: inherit; min-height: 48px;
}
button.ghost:hover { color: var(--text); border-color: var(--candle-dim); }
.progressbar { height: 8px; background: var(--panel2); border-radius: 999px; overflow: hidden; margin: 14px 0 24px; border: 1px solid var(--line); }
.progressbar i { display: block; height: 100%; background: linear-gradient(90deg, var(--green), var(--candle)); transition: width .4s ease; }

/* ライブラリ */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin: 14px 0 18px; }
.fbtn { background: var(--panel2); border: 1px solid var(--line); color: var(--dim); border-radius: 999px; padding: 9px 18px; font-size: 15px; cursor: pointer; font-family: inherit; min-height: 44px; }
.fbtn.on { color: var(--candle); border-color: var(--line-gold); background: rgba(228, 192, 122, .08); }
.qrow {
  display: flex; gap: 14px; align-items: center; width: 100%; text-align: left;
  background: none; border: none; border-bottom: 1px solid var(--line);
  padding: 16px 8px; color: var(--text); font-size: 16.5px; cursor: pointer; font-family: inherit; min-height: 58px;
}
.qrow:hover { background: rgba(228, 192, 122, .04); }
.qrow .qid { font-size: 14px; }
.qrow .head { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qrow .mark { flex-shrink: 0; font-size: 16px; font-family: var(--serif); }
.mark.ok { color: var(--accent); } .mark.ng { color: #e892a8; } .mark.none { color: #3f4a42; }

/* フッター */
#site-foot {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  max-width: var(--wrap); margin: 0 auto; width: 100%;
  padding: 18px clamp(16px, 4vw, 30px) 32px; color: var(--dim); font-size: 14px;
  border-top: 1px solid rgba(44, 59, 51, .5);
}
.foot-links { display: flex; gap: 16px; align-items: center; }
.foot-links a { color: var(--candle-dim); font-size: 13px; }

/* ---- スマホ・タブレット（ナビが題字を圧迫する幅からハンバーガー化） ---- */
@media (max-width: 880px) {
  body { font-size: 17.5px; }
  #nav-toggle { display: block; }
  #nav {
    position: absolute; top: 100%; right: clamp(16px, 4vw, 40px); left: clamp(16px, 4vw, 40px);
    flex-direction: column; gap: 4px; padding: 10px;
    background: rgba(13, 17, 15, .99); border: 1px solid var(--line-gold); border-radius: 12px;
    box-shadow: 0 12px 34px rgba(0,0,0,.7); display: none;
  }
  #nav.open { display: flex; }
  #nav a { font-size: 17px; padding: 14px 14px; text-align: center; }
  .persona { grid-template-columns: 1fr; }
  .pcard.wide .pic { aspect-ratio: 3/4; }
}
@media (max-width: 400px) { .brand-top { display: none; } }