/* LexiMaster — layout: shell, sidebar, topbar, view, footer */
.app-shell{display:flex;min-height:100vh}

/* ---------- sidebar ---------- */
.sidebar{
  width:var(--sidebar-w);flex:none;position:sticky;top:0;height:100vh;
  background:#fbfaf5;border-right:1px solid var(--line);
  display:flex;flex-direction:column;z-index:30;
}
.brand{display:flex;align-items:center;gap:11px;padding:20px 18px 18px;border-bottom:1px solid var(--line)}
.brand-mark{
  width:38px;height:38px;flex:none;border-radius:9px;background:var(--accent);color:#e9c884;
  font-family:Georgia,serif;font-size:25px;display:grid;place-items:center;
  box-shadow:0 3px 10px rgba(27,75,82,.2);
}
.brand-text{display:flex;flex-direction:column;line-height:1.3;min-width:0}
.brand-text strong{font-family:Georgia,serif;font-size:17px;letter-spacing:.02em;color:var(--accent)}
.brand-text span{font-size:10.5px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav{flex:1;overflow-y:auto;padding:14px 10px 20px}
.nav-group{margin-bottom:16px}
.nav-label{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);padding:6px 12px;font-weight:700}
.nav-item{
  display:flex;align-items:center;gap:10px;width:100%;padding:8px 11px;margin:1px 0;
  border:0;background:transparent;border-radius:7px;text-align:left;font-size:13px;color:var(--ink-2);
  transition:background .15s,color .15s;position:relative;
}
.nav-item svg{width:16px;height:16px;opacity:.75}
.nav-item:hover{background:var(--surface-2);color:var(--ink)}
.nav-item.active{background:var(--accent);color:#fff;font-weight:600}
.nav-item.active svg{opacity:1}
.nav-item .nav-dot{margin-left:auto;font-size:10px;background:var(--red);color:#fff;border-radius:10px;padding:0 5px;line-height:16px}
.nav-item.active .nav-dot{background:rgba(255,255,255,.25)}
.sidebar-foot{padding:12px 16px 16px;border-top:1px solid var(--line)}
.streak-badge{font-size:11.5px;color:var(--ink-2);display:flex;align-items:center;gap:6px;margin-bottom:6px}
.streak-badge .flame{color:var(--gold);font-size:14px}
.ver{font-size:10.5px;color:var(--muted);letter-spacing:.04em}

/* ---------- topbar ---------- */
.main-wrap{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  position:sticky;top:0;z-index:25;height:62px;flex:none;
  background:rgba(251,250,245,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:14px;padding:0 26px;
}
.icon-btn{width:34px;height:34px;border:1px solid var(--line);background:var(--surface);border-radius:8px;display:grid;place-items:center;color:var(--ink-2)}
.icon-btn:hover{border-color:var(--line-2);background:var(--surface-2)}
.menu-toggle{display:none}
.global-search{position:relative;flex:1;max-width:440px;display:flex;align-items:center}
.gs-icon{position:absolute;left:11px;width:16px;height:16px;color:var(--muted)}
.global-search input{
  width:100%;height:36px;padding:0 34px 0 34px;border:1px solid var(--line);border-radius:8px;
  background:var(--surface);outline:none;font-size:13px;transition:border-color .15s,box-shadow .15s;
}
.global-search input:focus{border-color:var(--accent-2);box-shadow:0 0 0 3px rgba(42,106,112,.1)}
.gs-hint{position:absolute;right:10px;font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:0 5px;line-height:17px}
.gs-results{
  position:absolute;top:42px;left:0;right:0;background:var(--surface);border:1px solid var(--line);
  border-radius:10px;box-shadow:var(--shadow-lg);max-height:360px;overflow-y:auto;padding:6px;z-index:40;
}
.gs-result{display:flex;align-items:baseline;gap:8px;padding:7px 10px;border-radius:6px;cursor:pointer}
.gs-result:hover,.gs-result.sel{background:var(--accent-soft)}
.gs-result .w{font-family:Georgia,serif;font-size:14px;color:var(--accent);font-weight:600}
.gs-result .d{font-size:11.5px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.top-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.lang-toggle{
  border:1px solid var(--line);background:var(--surface);border-radius:20px;height:30px;padding:0 12px;
  font-size:11.5px;color:var(--muted);display:flex;align-items:center;gap:3px;letter-spacing:.02em;
}
.lang-toggle .lang-zh,.lang-toggle .lang-en{font-weight:700;color:var(--muted)}
.lang-toggle[data-lang="zh"] .lang-zh,.lang-toggle[data-lang="en"] .lang-en{color:var(--accent)}
.lang-toggle .lang-sep{opacity:.5}
.lang-toggle:hover{border-color:var(--accent-2)}
.progress-chip{font-size:11.5px;color:var(--ink-2);display:flex;align-items:center;gap:7px;white-space:nowrap}
.progress-chip .bar{width:64px;height:5px;border-radius:4px;background:var(--surface-3);overflow:hidden}
.progress-chip .bar i{display:block;height:100%;background:var(--accent);border-radius:4px}

/* ---------- view ---------- */
.view{flex:1;padding:28px 30px 48px;max-width:1360px;width:100%;margin:0 auto;outline:none;animation:fadeUp .28s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:none}}
.view-head{margin-bottom:22px}
.view-head .eyebrow{font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);font-weight:700;margin-bottom:5px}
.view-head .sub{font-size:12.5px;color:var(--muted);margin-top:5px;max-width:820px}
.view-head h1 span{font-family:var(--sans);font-size:13px;font-weight:400;color:var(--muted);margin-left:10px}

/* ---------- footer ---------- */
.footer{
  border-top:1px solid var(--line);background:#fbfaf5;margin-top:auto;
  padding:14px 30px;display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:11px;color:var(--muted);
}
.footer-left{display:flex;flex-direction:column;gap:3px;min-width:0}
.footer-copyright{font-size:10.5px;letter-spacing:.2px;color:var(--muted);opacity:.9}
.contact-link{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:11.5px}
.contact-link svg{width:14px;height:14px}
.contact-link:hover{color:var(--accent);text-decoration:none}

/* ---------- toast ---------- */
.toast-host{position:fixed;right:22px;bottom:22px;z-index:100;display:flex;flex-direction:column;gap:8px;align-items:flex-end}
.toast{
  background:var(--accent);color:#fff;padding:10px 16px;border-radius:9px;box-shadow:var(--shadow-lg);
  font-size:12.5px;animation:toastIn .25s ease;max-width:320px;
}
.toast.err{background:var(--red)}
@keyframes toastIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:860px){
  :root{--sidebar-w:230px}
  /* inline two-column grids defined by views collapse to a single column */
  .grid[style*="grid-template-columns"]{grid-template-columns:1fr!important}
  .card[style*="position:sticky"]{position:static!important}
  .sidebar{position:fixed;left:0;top:0;transform:translateX(-100%);transition:transform .22s ease;box-shadow:var(--shadow-lg)}
  .sidebar.open{transform:none}
  .menu-toggle{display:grid}
  .topbar{padding:0 16px;gap:10px}
  .view{padding:22px 16px 40px}
  .footer{padding:14px 16px}
  .global-search{max-width:none}
  .progress-chip .bar{display:none}
  .g2,.g3,.g4{grid-template-columns:1fr}
}
@media(max-width:520px){
  .topbar{height:56px}
  .gs-hint,.progress-chip{display:none}
  .view-head h1{font-size:22px}
  .brand-text span{display:none}
  .footer{gap:8px}
  .footer-copyright{font-size:10px}
}