/* ListenFocus 2.0 -- shared styles. Mobile first, no build step. */

:root{
  --bg:#f4f5fb; --card:#fff; --ink:#1c1f2b; --muted:#7a8093; --line:#eceef5;
  --accent:#5b5bd6; --accent-2:#7c7ce0; --accent-soft:#eef0ff;
  --ok:#22b07d; --ok-soft:#e7f7ef;
  --warn:#e0a23c; --warn-soft:#fdf3e4;
  --danger:#e25d5d; --danger-soft:#fdeaea;
  --radius:16px; --radius-sm:12px;
  --tap:44px;
  --bar:calc(96px + env(safe-area-inset-bottom));
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Roboto,Helvetica,Arial,sans-serif;
  -webkit-text-size-adjust:100%;}
body{font-size:16px;line-height:1.5;}
body.has-bar{padding-bottom:var(--bar);}
.wrap{max-width:820px;margin:0 auto;padding:0 14px 24px;}
a{color:var(--accent);}

/* ---------- top bar ---------- */
.topbar{position:sticky;top:0;z-index:30;background:rgba(244,245,251,.94);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);}
.topbar .inner{max-width:820px;margin:0 auto;padding:10px 14px;display:flex;align-items:center;gap:10px;}
.topbar .logo{width:34px;height:34px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:19px;
  box-shadow:0 5px 14px rgba(91,91,214,.28);}
.topbar h1{font-size:16px;margin:0;line-height:1.2;}
.topbar .sub{font-size:11.5px;color:var(--muted);}
.topbar .ttl{flex:1;min-width:0;}
.topbar .ttl h1{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);
  padding:11px 15px;font-size:14.5px;font-weight:600;cursor:pointer;min-height:var(--tap);
  font-family:inherit;line-height:1.1;}
.btn:active{transform:translateY(1px);}
.btn:disabled{opacity:.5;}
.btn.ghost{background:var(--accent-soft);color:var(--accent);}
.btn.gray{background:#f1f2f7;color:#5a6073;}
.btn.danger{background:var(--danger-soft);color:var(--danger);}
.btn.sm{padding:8px 12px;font-size:13px;min-height:36px;border-radius:10px;}
.btn.block{width:100%;}
.btn.icon{padding:8px 10px;min-height:38px;font-size:17px;}

/* ---------- chips / badges ---------- */
.chip{display:inline-flex;align-items:center;gap:6px;background:var(--card);
  border:1px solid var(--line);border-radius:999px;padding:9px 13px;font-size:13px;
  color:var(--ink);cursor:pointer;min-height:38px;font-family:inherit;}
.chip.on{background:var(--accent-soft);border-color:var(--accent);color:var(--accent);font-weight:600;}
.chip:disabled{opacity:.5;}

.badge{display:inline-block;font-size:11px;font-weight:600;padding:2px 8px;
  border-radius:999px;vertical-align:2px;white-space:nowrap;}
.badge.draft{background:#f1f2f7;color:#9aa0b4;}
.badge.reviewed{background:var(--warn-soft);color:var(--warn);}
.badge.published{background:var(--ok-soft);color:var(--ok);}
.badge.unparsed{background:#f1f2f7;color:#9aa0b4;}
.badge.parsing{background:var(--warn-soft);color:var(--warn);}
.badge.parsed{background:var(--ok-soft);color:var(--ok);}
.badge.error{background:var(--danger-soft);color:var(--danger);}
.badge.edited{background:#eef0ff;color:var(--accent);}

/* ---------- cards ---------- */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:15px 16px;margin-top:12px;}
.card h2{font-size:15px;margin:0 0 8px;}
.muted{color:var(--muted);}
.tiny{font-size:12.5px;}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.row.tight{gap:8px;}
.spacer{flex:1;}
.empty,.loading{text-align:center;color:var(--muted);padding:38px 10px;font-size:14px;}

/* ---------- forms ---------- */
label.f{display:block;font-size:12.5px;color:var(--muted);margin:12px 0 5px;}
input[type=text],input[type=password],input[type=search],textarea,select{
  width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:11px 12px;font-size:16px;background:#fafbff;color:var(--ink);
  font-family:inherit;min-height:var(--tap);}
textarea{line-height:1.6;resize:vertical;}
input:focus,textarea:focus,select:focus{outline:2px solid var(--accent-soft);border-color:var(--accent);}
input[type=file]{width:100%;font-size:14px;padding:8px 0;}
input[type=range]{width:100%;accent-color:var(--accent);height:32px;}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;transform:translateX(-50%);top:14px;z-index:99;
  padding:11px 18px;border-radius:12px;color:#fff;font-size:14px;background:var(--ok);
  opacity:0;pointer-events:none;transition:opacity .18s;max-width:88vw;text-align:center;}
.toast.show{opacity:1;}
.toast.err{background:var(--danger);}

/* ---------- bottom sheet ---------- */
.backdrop{position:fixed;inset:0;background:rgba(20,22,30,.45);z-index:60;opacity:0;
  pointer-events:none;transition:opacity .18s;}
.backdrop.show{opacity:1;pointer-events:auto;}
.sheet{position:fixed;left:0;right:0;bottom:0;z-index:61;background:var(--card);
  border-radius:20px 20px 0 0;padding:16px 16px calc(16px + env(safe-area-inset-bottom));
  transform:translateY(102%);transition:transform .22s ease;max-height:88vh;overflow:auto;}
.sheet.show{transform:translateY(0);}
.sheet h3{margin:0 0 4px;font-size:16px;}
.sheet .grab{width:38px;height:4px;border-radius:2px;background:#e2e4ee;margin:0 auto 12px;}
.sheet .actions{display:flex;gap:10px;margin-top:16px;}
.sheet .actions .btn{flex:1;}

/* 面板里的整行选项（"更多操作"、导出格式）。教师端两个页面共用，所以放在这里。 */
.menuItem{display:flex;align-items:center;gap:10px;width:100%;text-align:left;
  background:none;border:none;padding:14px 4px;font-size:15.5px;color:var(--ink);
  border-bottom:1px solid var(--line);cursor:pointer;font-family:inherit;}
.menuItem:last-child{border-bottom:none;}
.menuItem.danger{color:var(--danger);}

/* ---------- sentence list ---------- */
.slist{margin-top:12px;display:flex;flex-direction:column;gap:8px;}
.sentence{background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:12px 14px;cursor:pointer;transition:border-color .12s,box-shadow .12s;}
.sentence.current{border-color:var(--accent);box-shadow:0 4px 18px rgba(91,91,214,.16);}
.sentence .head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:11.5px;
  color:var(--accent);font-weight:700;letter-spacing:.3px;margin-bottom:5px;}
.sentence .head .tm{color:var(--muted);font-weight:500;font-variant-numeric:tabular-nums;}
.sentence .head .playing{color:var(--accent);}
.sentence .text{font-size:16.5px;line-height:1.6;word-break:break-word;}
.sentence.note{background:#f7f8fc;border-color:#e6e8f2;}
.sentence.note .head{color:#8a90a6;}
.sentence.note .text{font-size:15px;color:#4a5060;}
.sentence .reveal{display:none;margin-top:8px;font-size:13px;color:var(--accent);}
.sentence .hide{display:none;margin-top:8px;font-size:13px;color:var(--muted);}
body.dictation .sentence.listen:not(.revealed) .text{color:transparent;user-select:none;
  background:#f0f1ff;border-radius:8px;}
body.dictation .sentence.listen:not(.revealed) .reveal{display:inline-block;}
body.dictation .sentence.listen.revealed .hide{display:inline-block;}

/* ---------- fixed player ---------- */
.player{position:fixed;left:0;right:0;bottom:0;z-index:50;
  padding:8px 14px calc(8px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.95);backdrop-filter:blur(14px);border-top:1px solid var(--line);}
.player .inner{max-width:820px;margin:0 auto;}
.player .meta{display:flex;align-items:center;gap:10px;font-size:11.5px;color:var(--muted);}
.player .meta .which{min-width:74px;}
.player .meta .t{font-variant-numeric:tabular-nums;}
.bar{flex:1;height:6px;background:#e7e9f4;border-radius:999px;overflow:hidden;position:relative;}
.bar .fill{position:absolute;left:0;top:0;bottom:0;width:0;background:var(--accent);border-radius:999px;}
.player .ctrl{display:flex;align-items:center;justify-content:center;gap:26px;margin-top:4px;}
.pbtn{background:none;border:none;color:var(--accent);cursor:pointer;
  display:flex;align-items:center;justify-content:center;width:50px;height:50px;
  border-radius:50%;font-size:25px;font-family:inherit;}
.pbtn.main{width:58px;height:58px;background:var(--accent);color:#fff;font-size:23px;
  box-shadow:0 6px 18px rgba(91,91,214,.34);}

.hidden{display:none !important;}
.mono{font-variant-numeric:tabular-nums;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;}