/* ============================================================
   English Opera · COCA 词汇浏览 — 独立页面样式
   Swiss International Style — light paper · ink · red accent
   Linked BEFORE swiss.css; swiss.css provides the final cascade.
   ============================================================ */

:root{
  --bg:#ffffff;
  --bg-soft:#f4f4f1;
  --panel:#ffffff;
  --panel-2:#f4f4f1;
  --border:#d8d8d2;
  --text:#111111;
  --dim:#6b6b6b;
  --muted:#8a8a8a;
  --accent:#e2231a;
  --accent-2:#e2231a;
  --red:#e2231a;
  --green:#111111;
  --r:0px;
  --r-sm:0px;
  --font-cn:"Helvetica Neue",Helvetica,Arial,"Inter","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans CJK SC",sans-serif;
  --font-en:"Helvetica Neue",Helvetica,Arial,"Inter","Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:var(--font-cn);
  background:var(--bg);
  color:var(--text);line-height:1.6;min-height:100vh;
}
a{color:inherit;text-decoration:none}
code{font-family:"SFMono-Regular",Consolas,monospace;background:rgba(226,35,26,.10);color:var(--accent);padding:.05em .4em;font-size:.9em}

/* ===== Top bar ===== */
.coca-topbar{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:16px 26px;border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:20}
.coca-topbar__brand{display:flex;gap:12px;align-items:center}
.coca-topbar__logo{font-size:28px;color:var(--accent)}
.coca-topbar h1{font-size:1.18rem;letter-spacing:.5px}
.coca-topbar__sub{font-size:.78rem;color:var(--dim)}
.coca-topbar__actions{display:flex;gap:10px;align-items:center}
.coca-back{color:var(--dim);font-size:.85rem;padding:7px 12px;border:1px solid var(--border);transition:color .2s,border-color .2s}
.coca-back:hover{color:var(--accent);border-color:var(--accent)}
.coca-subnav{display:flex;gap:6px}
.coca-subnav a{font-size:.84rem;color:var(--dim);padding:7px 14px;transition:color .2s,background .2s}
.coca-subnav a:hover{color:var(--accent);background:var(--bg-soft)}
.coca-subnav a.is-active{color:#fff;background:var(--accent);font-weight:600}

/* ===== Hero ===== */
/* top padding clears the fixed site .nav (≈52px) that replaced the old
   in-flow .coca-topbar */
.coca-hero{max-width:1120px;margin:0 auto;padding:clamp(70px,9vw,96px) clamp(16px,4vw,32px) 22px;text-align:center}
.coca-hero__eyebrow{letter-spacing:5px;color:var(--accent);font-size:.78rem;text-transform:uppercase;margin-bottom:14px}
.coca-hero__title{font-size:clamp(1.9rem,5vw,3rem);font-weight:800;letter-spacing:1px;color:var(--text)}
.coca-hero__sub{color:var(--dim);font-size:clamp(.92rem,2vw,1.05rem);margin:16px auto 0;max-width:720px}

/* ===== Tabs ===== */
.coca-tabs{max-width:1120px;margin:0 auto;padding:0 clamp(16px,4vw,32px);display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.coca-tab{background:var(--panel);border:1px solid var(--border);color:var(--dim);padding:9px 15px;font-size:.84rem;cursor:pointer;transition:all .2s;font-variant-numeric:tabular-nums}
.coca-tab:hover{color:var(--accent);border-color:var(--accent)}
.coca-tab.is-active{color:#fff;background:var(--accent);border-color:var(--accent);font-weight:700}

/* ===== Toolbar ===== */
.coca-toolbar{max-width:1120px;margin:18px auto 0;padding:0 clamp(16px,4vw,32px);display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between}
.coca-search{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--border);padding:8px 14px;min-width:240px;flex:1;max-width:340px}
.coca-search input{flex:1;background:transparent;border:0;outline:0;color:var(--text);font-size:.9rem;font-family:var(--font-cn)}
.coca-search input::placeholder{color:var(--muted)}
.coca-info{color:var(--dim);font-size:.85rem;font-variant-numeric:tabular-nums}
.coca-info b{color:var(--accent)}

/* ===== Word grid ===== */
.coca-grid{max-width:1120px;margin:18px auto 60px;padding:0 clamp(16px,4vw,32px);
  display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:7px}
/* Credits (鸣谢) section: same horizontal rhythm + centering as the coca
   vocabulary grid above, so it no longer hugs the viewport edges. */
#credits{max-width:1120px;margin:0 auto;padding:0 clamp(16px,4vw,32px)}
.coca-cell{background:var(--panel);border:1px solid var(--border);color:var(--text);padding:11px 10px;
  font-size:.92rem;cursor:pointer;text-align:left;transition:all .18s;font-family:var(--font-en);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.coca-cell:hover{background:var(--panel-2);border-color:var(--accent);color:var(--accent)}
.coca-cell:active{transform:translateY(0)}
.coca-error{color:var(--red);text-align:center;padding:40px;grid-column:1/-1}

/* ===== Popup ===== */
.coca-overlay[hidden], .coca-pop[hidden]{display:none}
.coca-overlay{position:fixed;inset:0;background:rgba(17,17,17,.45);z-index:60}
.coca-pop{position:fixed;z-index:61;top:50%;left:50%;transform:translate(-50%,-50%);
  width:min(420px,94vw);max-height:90vh;overflow:auto;
  background:var(--panel);border:1px solid var(--accent);
  padding:26px 26px 28px;display:flex;flex-direction:column;gap:14px}
.pop__head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.pop__word{font-family:var(--font-en);font-size:1.7rem;font-weight:800;letter-spacing:.3px;color:var(--text);line-height:1.1}
.pop__close{background:var(--panel-2);border:1px solid var(--border);color:var(--dim);width:32px;height:32px;cursor:pointer;font-size:1rem;flex:0 0 auto;transition:all .2s;display:inline-flex;align-items:center;justify-content:center}
.pop__close:hover{color:var(--accent);border-color:var(--accent)}
.pop__phon{display:flex;align-items:center;gap:10px}
.pop__phon-label{font-size:.7rem;color:var(--dim);text-transform:uppercase;letter-spacing:.08em;font-weight:700;flex:0 0 auto}
.pop__phon-text{color:var(--accent);font-size:.95rem;font-family:var(--font-en)}
.pop__phon-ipa{font-family:var(--font-en);color:var(--dim);font-size:.82rem}
.pop__speak{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;background:var(--bg-soft);border:1px solid var(--accent);color:var(--accent);cursor:pointer;transition:all .2s;padding:0;flex:0 0 auto}
.pop__speak:hover{background:var(--accent);color:#fff}
.pop__speak:disabled{opacity:.4;cursor:not-allowed}
.pop__speak .ico{width:14px;height:14px}
.pop__freq{font-size:.8rem;color:var(--dim);font-family:var(--font-cn)}
.pop__freq b{color:var(--text);font-weight:700}
.pop__trans{font-size:1.05rem;color:var(--accent);font-weight:600;line-height:1.6;font-family:var(--font-cn)}
.pop__sent{font-family:var(--font-en);font-style:italic;color:var(--text);font-size:1.02rem;line-height:1.65;padding:12px 14px;background:var(--bg-soft);border-left:3px solid var(--accent);display:flex;align-items:flex-start;gap:10px}
.pop__sent-text{flex:1}
.pop__sent-speak{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--bg-soft);border:1px solid var(--accent);color:var(--accent);cursor:pointer;transition:all .2s;padding:0;flex:0 0 auto;margin-top:2px}
.pop__sent-speak:hover{background:var(--accent);color:#fff}
.pop__sent-speak .ico{width:13px;height:13px}
.pop__entries{display:flex;flex-direction:column;gap:12px;margin-top:2px}
.pop__def{position:relative;padding-left:22px;line-height:1.55;font-family:var(--font-en)}
.pop__def-no{position:absolute;left:0;top:2px;color:var(--accent);font-weight:700;font-size:.82rem}
.pop__def-pos{display:inline-block;margin-right:8px;padding:1px 6px;border:1px solid var(--accent);color:var(--accent);font-size:.68rem;font-family:var(--font-en);text-transform:lowercase;vertical-align:middle}
.pop__def-text{color:var(--text);font-size:.98rem}
.pop__def-ex{margin-top:4px;font-style:italic;color:var(--text);font-size:.92rem;line-height:1.5;padding:8px 10px;background:var(--bg-soft);border-left:3px solid var(--accent);display:flex;align-items:flex-start;gap:8px}
.pop__def-ex .pop__def-speak{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;background:var(--bg-soft);border:1px solid var(--accent);color:var(--accent);cursor:pointer;padding:0;flex:0 0 auto;margin-top:1px;transition:all .2s}
.pop__def-ex .pop__def-speak:hover{background:var(--accent);color:#fff}
.pop__def-ex .pop__def-speak .ico{width:13px;height:13px}
.pop__def-empty{color:var(--dim);font-style:italic;margin:0}
.pop__loading{color:var(--muted);font-size:.88rem}
.pop__empty{color:var(--muted);font-size:.85rem}

/* ===== Synonyms ===== */
.pop__syn{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px;padding-top:12px;border-top:1px solid var(--border)}
.pop__syn-label{font-size:.74rem;font-weight:700;letter-spacing:.5px;text-transform:uppercase;color:var(--dim);font-family:var(--font-cn)}
.pop__syn-word{display:inline-flex;align-items:center;padding:3px 11px;border:1px solid var(--accent);color:var(--accent);font-size:.85rem;font-family:var(--font-en);cursor:pointer;transition:all .18s;background:transparent}
.pop__syn-word:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.pop__syn-word:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.pop__syn-sep{color:var(--muted);font-size:.8rem}

/* ===== Footer ===== */
.coca-footer{text-align:center;padding:30px 16px 40px;color:var(--dim);font-size:.8rem;border-top:1px solid var(--border);margin-top:20px}
.coca-footer__sub{color:var(--muted);margin-top:6px;font-size:.74rem}

@media(max-width:560px){
  .coca-topbar{flex-wrap:wrap}
  .coca-subnav{order:3;width:100%;justify-content:center}
  .coca-grid{grid-template-columns:repeat(auto-fill,minmax(96px,1fr))}
}