/* 자료 선택 화면 공통 디자인 (단어학습기 기준). 단어학습기·워드킹이 함께 쓴다. */
    .wordy-ad { width: 100%; max-width: 728px; margin: 28px auto; min-height: 90px; overflow: hidden; }
    .wordy-ad ins.adsbygoogle { display:block; width:100%; }
    /* 영어(A) ↔ 한글(가)로 뒤집히는 카드 (index_new 메뉴 아이콘과 동일) */
    body.wordy-index-page i.wd-flip{position:relative;display:inline-block;width:44px;height:44px;perspective:300px;font-style:normal;font-size:22px;vertical-align:middle}
    .wd-flip u{position:absolute;inset:0;text-decoration:none;transform-style:preserve-3d;animation:wdflip 1.1s ease-in-out infinite alternate}
    .wd-flip b{position:absolute;inset:0;display:grid;place-items:center;border-radius:8px;border:1.5px solid var(--site-accent);background:var(--site-accent-soft);color:var(--site-accent);font-size:1em;font-weight:800;line-height:1;backface-visibility:hidden;-webkit-backface-visibility:hidden}
    .wd-flip b.k{transform:rotateY(180deg);font-size:.95em}
    body.wordy-index-page .hero-title i.wd-flip{width:1.8em;height:1.8em;font-size:.5em;margin-right:.35em;vertical-align:-.05em;perspective:400px}
    @keyframes wdflip{0%,25%{transform:rotateY(0)}75%,100%{transform:rotateY(180deg)}}
    @media (prefers-reduced-motion:reduce){.wd-flip u{animation:none}}
    :root {
      --bg:       #f0ede8;
      --surface:  #ffffff;
      --surface2: #f7f5f2;
      --border:   #d8d3cc;
      --text:     #1c1a18;
      --text-2:   #5a5650;
      --text-3:   #9a948c;
      --accent:   #e85d26;
      --accent-d: #c44a18;
      --blue:     #2563eb;
      --amber:    #d97706;
      --green:    #059669;
      --shadow:   0 1px 3px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);
      --shadow-h: 0 8px 36px rgba(0,0,0,.13);
      --r:        16px;
      --r-s:      10px;
      --hh:       58px;
    }
    .dark {
      --bg:       #131210;
      --surface:  #201e1b;
      --surface2: #2a2823;
      --border:   #3a3730;
      --text:     #f0ece6;
      --text-2:   #a09890;
      --text-3:   #6a6460;
      --accent:   #ff7043;
      --accent-d: #e85d26;
      --blue:     #60a5fa;
      --amber:    #fbbf24;
      --green:    #34d399;
      --shadow:   0 1px 3px rgba(0,0,0,.35), 0 4px 16px rgba(0,0,0,.3);
      --shadow-h: 0 8px 36px rgba(0,0,0,.5);
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Noto Sans KR', sans-serif;
      background: var(--bg); color: var(--text);
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
      transition: background .3s, color .3s;
      padding-bottom: env(safe-area-inset-bottom);
      padding-left: env(safe-area-inset-left);
      padding-right: env(safe-area-inset-right);
    }
    a { color: inherit; text-decoration: none; }
    button { font-family: inherit; cursor: pointer; border: none; }

    /* ── Header ── */
    header {
      position: fixed; inset: 0 0 auto 0; z-index: 200;
      height: calc(var(--hh) + env(safe-area-inset-top));
      padding-top: env(safe-area-inset-top);
      background: var(--bg);
      border-bottom: 1.5px solid var(--border);
      transition: background .3s, box-shadow .3s;
    }
    header.scrolled { background: var(--surface); box-shadow: var(--shadow); }
    nav {
      max-width: 600px; margin: 0 auto; padding: 0 20px;
      height: 100%; display: flex; align-items: center; justify-content: space-between;
    }
    .logo {
      font-family: 'Bebas Neue', sans-serif;
      font-size: 1.9rem; letter-spacing: .06em; color: var(--text); line-height: 1;
    }
    .logo .ac { color: var(--accent); }
    .nav-right { display: flex; align-items: center; gap: 4px; }
    .icon-btn {
      width: 36px; height: 36px;
      display: inline-flex; align-items: center; justify-content: center;
      border-radius: 8px; color: var(--text-2); font-size: .88rem;
      transition: background .15s, color .15s; cursor: pointer; background: none;
    }
    .icon-btn:hover { background: var(--surface2); color: var(--text); }

    /* ── Main ── */
    main {
      max-width: 600px; margin: 0 auto;
      padding: calc(var(--hh) + env(safe-area-inset-top) + 28px) 16px 72px;
      display: flex; flex-direction: column; gap: 16px;
    }

    /* ── Hero ── */
    .hero { text-align: center; margin-bottom: 8px; }
    .hero-eyebrow {
      font-family: 'Space Mono', monospace;
      font-size: .65rem; font-weight: 700;
      letter-spacing: .14em; text-transform: uppercase;
      color: var(--accent); margin-bottom: 6px;
    }
    .hero-title {
      font-family: 'Bebas Neue', sans-serif;
      font-size: clamp(2rem, 8vw, 3.2rem);
      letter-spacing: .04em; color: var(--text); line-height: 1;
      margin-bottom: 6px;
    }
    .hero-title span { color: var(--accent); }
    .hero-sub { font-size: .82rem; color: var(--text-2); }

    /* ── Book image card ── */
    .book-card {
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: var(--r);
      overflow: hidden;
      box-shadow: var(--shadow);
      display: flex; align-items: center; justify-content: center;
      padding: 0;
      position: relative;
    }
    .book-img {
      width: 100%; max-height: 200px;
      object-fit: cover; object-position: center;
      display: block;
      transition: transform .4s, filter .4s;
      animation: shimmer 4s ease-in-out infinite alternate;
    }
    @keyframes shimmer {
      0%   { filter: brightness(.85) saturate(1);   transform: scale(1.01); }
      100% { filter: brightness(1.08) saturate(1.1); transform: scale(1.04); }
    }
    .book-card:hover .book-img { transform: scale(1.07); filter: brightness(1.1); animation: none; }

    /* ── Form card ── */
    .form-card {
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: var(--r);
      box-shadow: var(--shadow);
      overflow: hidden;
    }
    .form-card-head {
      background: var(--surface2);
      border-bottom: 1px solid var(--border);
      padding: 13px 18px;
      display: flex; align-items: center; gap: 8px;
    }
    .form-card-head-icon {
      width: 28px; height: 28px; border-radius: 7px;
      display: flex; align-items: center; justify-content: center;
      font-size: .8rem;
    }
    .form-card-head-icon.orange { background: rgba(232,93,38,.1); color: var(--accent); }
    .form-card-head-icon.blue   { background: rgba(37,99,235,.1);  color: var(--blue); }
    .form-card-head-title {
      font-family: 'Space Mono', monospace;
      font-size: .62rem; font-weight: 700; letter-spacing: .08em;
      text-transform: uppercase; color: var(--text-2);
    }
    .form-card-body { padding: 16px 18px; }

    /* ── Select ── */
    .select-wrap {
      position: relative;
    }
    .form-select {
      width: 100%;
      appearance: none; -webkit-appearance: none;
      font-family: 'Noto Sans KR', sans-serif;
      font-size: max(.88rem, 16px); /* iOS는 16px 미만이면 포커스 시 자동 확대됨 */
      padding: 10px 36px 10px 14px;
      border: 1.5px solid var(--border);
      border-radius: var(--r-s);
      background: var(--surface2); color: var(--text);
      outline: none;
      transition: border-color .2s, box-shadow .2s;
      cursor: pointer;
    }
    .form-select:focus {
      border-color: var(--accent);
      box-shadow: 0 0 0 3px rgba(232,93,38,.1);
    }
    .select-arrow {
      position: absolute; right: 12px; top: 50%;
      transform: translateY(-50%);
      font-size: .6rem; color: var(--text-3);
      pointer-events: none;
    }

    /* ── Range grid ── */
    .range-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(68px, 1fr));
      gap: 6px;
      max-height: 200px;
      overflow-y: auto;
      padding: 2px;
    }
    .range-grid::-webkit-scrollbar { width: 4px; }
    .range-grid::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

    .range-chip {
      font-family: 'Space Mono', monospace;
      font-size: .62rem; font-weight: 700; letter-spacing: .04em;
      padding: 7px 4px; border-radius: var(--r-s);
      border: 1.5px solid var(--border);
      background: var(--surface2); color: var(--text-3);
      cursor: pointer; text-align: center;
      transition: all .15s;
      -webkit-tap-highlight-color: transparent;
    }
    .range-chip:hover  { border-color: var(--accent); color: var(--accent); background: var(--surface); }
    /* 카테고리 칩: 한글 라벨이 줄바꿈으로 무너지지 않게 한 줄로 유지 */
    #catGrid { display: flex; flex-wrap: wrap; gap: 8px; max-height: none; overflow: visible; padding: 2px; }
    .one-note { margin: 0; padding: 12px 14px; border: 1.5px solid var(--accent); border-radius: var(--r-s); background: var(--surface2); color: var(--accent); font-weight: 700; font-size: .92rem; }
    .one-note[hidden], .select-wrap[hidden] { display: none; }
    .one-note.empty { border-color: var(--border); color: var(--text-2); font-weight: 600; }
    .one-note.empty a { color: var(--accent); font-weight: 700; text-decoration: underline; text-underline-offset: 3px; }
    .start-btn:disabled { opacity: .45; cursor: not-allowed; }
    .range-chip.cat-chip { font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif; font-size: .88rem; font-weight: 700; letter-spacing: 0; white-space: nowrap; word-break: keep-all; padding: 9px 16px; flex: 0 0 auto; }
    .range-chip.sel    { background: var(--accent); color: #fff; border-color: var(--accent); }
    .range-chip.preset { background: rgba(37,99,235,.07); color: var(--blue); border-color: rgba(37,99,235,.2); }
    .range-chip.preset.sel { background: var(--blue); color: #fff; border-color: var(--blue); }

    /* Hidden real select */
    #wordy_text_range { display: none; }

    /* ── Start button ── */
    .start-btn {
      width: 100%;
      font-family: 'Bebas Neue', sans-serif;
      font-size: 1.4rem; letter-spacing: .08em;
      padding: 16px;
      border-radius: var(--r);
      background: var(--accent); color: #fff;
      border: none; cursor: pointer;
      box-shadow: 0 4px 20px rgba(232,93,38,.3);
      transition: background .2s, transform .15s, box-shadow .2s;
      display: flex; align-items: center; justify-content: center; gap: 10px;
    }
    .start-btn:hover {
      background: var(--accent-d);
      transform: translateY(-2px);
      box-shadow: 0 8px 28px rgba(232,93,38,.4);
    }
    .start-btn:active { transform: scale(.98); }
    .start-btn i { font-size: 1.1rem; }

    /* ── Fade-up ── */
    .fu { opacity: 0; transform: translateY(14px); transition: opacity .45s, transform .45s; }
    .fu.in { opacity: 1; transform: none; }

    ::-webkit-scrollbar { width: 5px; }
    ::-webkit-scrollbar-track { background: var(--bg); }
    ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

    /* ── 워드킹과 공유: 왕관 아이콘, 랭킹, 옵션 칩, 출전 요약, 효과음 버튼 ── */
    body.wordy-index-page .hero-title i.wk-crown{font-size:.8em;margin-right:.3em;vertical-align:-.04em}
    .opt-row{display:flex;flex-wrap:wrap;gap:8px}
    .range-chip.opt-chip{flex:0 0 auto;padding:9px 16px;font-family:'Noto Sans KR',-apple-system,BlinkMacSystemFont,sans-serif;font-size:.88rem;white-space:nowrap}
    .rank-list{display:grid;gap:6px}
    .rank-list .ranking-item{padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--r-s);background:var(--surface2);color:var(--text);font-weight:700;font-size:.92rem;cursor:default}
    .score-line{margin:0;color:var(--text);font-weight:700}
    .score-line .score{color:var(--accent)}
    .mission-brief{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;margin:0 0 14px;padding:12px 14px;border:1.5px solid var(--border);border-radius:var(--r-s);background:var(--surface2);font-size:.9rem}
    .mission-brief strong{color:var(--accent)}
    .sound-toggle{position:fixed;right:18px;bottom:18px;z-index:10;width:40px;height:40px;border:1.5px solid var(--border);border-radius:50%;background:var(--surface);color:var(--text);cursor:pointer;font-size:1rem;box-shadow:var(--shadow)}
    .hidden-select{display:none}
    .start-btn:disabled{opacity:.45;cursor:not-allowed}

    /* 폼 안의 카드·버튼 사이 간격 (main의 gap과 같은 16px) */
    main form { display: flex; flex-direction: column; gap: 16px; }
    .rank-list .ranking-item{display:flex;align-items:center;gap:8px}
    .rank-list .medal{display:inline-block;min-width:1.8em;text-align:center}
    .rank-list .rscore{margin-left:auto;color:var(--accent)}