/* app.css — Trang học viên (bản cũ), bố cục Listening/Writing/Speaking, hồ sơ, PIN, thi đầy đủ, soạn đề, ghi chú
   (tách từ index.html; thứ tự nạp các file CSS phải giữ như trong index.html) */
/* ---------- Home ---------- */
#home{height:100%;overflow:auto;background:var(--soft);padding:32px 16px}
.hwrap{max-width:1000px;margin:0 auto}
.hwrap h1{font-size:28px;margin:18px 0 4px}
.hwrap .sub{color:var(--muted);margin:0 0 24px}
.mods{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.mod{text-align:left;background:#fff;border:1px solid var(--line);border-radius:6px;padding:20px;cursor:pointer;display:flex;flex-direction:column;gap:6px;font-size:15px;color:var(--ink)}
.mod:hover{border-color:var(--accent);box-shadow:0 0 0 2px #dbe7fd}
.mico{width:40px;height:40px;border-radius:4px;background:var(--hdr);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;margin-bottom:6px}
.mname{font-size:21px;font-weight:700}
.mdesc{color:var(--muted)}
.mlast{margin-top:8px;padding-top:10px;border-top:1px solid #eceff2;font-size:14px}
.row2{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.card code{background:var(--soft);padding:1px 5px;border-radius:3px;font-size:13px}

/* ---------- Header extras ---------- */
.timer{max-width:60vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.vol{display:flex;align-items:center;gap:8px;font-size:13px;color:#c9d1d9}
.vol input{width:90px}
.hbtn.skip{border-style:dashed}

/* ---------- Listening layout ---------- */
.k-listening #paneL,.k-listening #divider{display:none}
.k-listening #paneR{flex:1 1 0}
.k-listening #paneR .pane-in{max-width:900px;margin:0 auto}
.notes.plain ul{list-style:none;padding-left:0}
.notes li.sub{list-style:none;margin:16px 0 4px;line-height:1.4}
.notes li.sub:first-child{margin-top:0}
.notes ul:has(li.sub){list-style:none;padding-left:0}
.notes ul:has(li.sub) li:not(.sub){list-style:disc;margin-left:20px}

/* ---------- Writing layout ---------- */
.wprompt{font-size:17px;line-height:1.7;margin:0 0 12px}
.chartbox{margin:16px 0;border:1px solid var(--line);border-radius:3px;padding:6px;overflow-x:auto;background:#fff}
.chartbox svg{display:block;width:100%;min-width:420px;height:auto}
#paneR.writing .pane-in{height:100%;display:flex;flex-direction:column;padding-bottom:14px}
#paneR.writing .ppart{flex:1;display:flex;flex-direction:column;min-height:0}
#paneR.writing .ppart[hidden]{display:none}
.wbox{flex:1;min-height:220px;width:100%;resize:none;font:17px/1.65 Arial,Helvetica,sans-serif;padding:14px 16px;border:1px solid #8a949e;border-radius:3px;color:var(--ink)}
.wcount{margin-top:8px;font-size:15px;color:var(--ink)}
.tab{background:none;border:1px solid var(--line);border-radius:3px;padding:8px 14px;cursor:pointer;font-size:15px;display:flex;gap:12px;align-items:center}
.tab:hover{background:var(--soft)}
.tab.on{border:2px solid var(--accent);background:#eaf1fe}
.tab .wcs{color:var(--muted);font-size:13px}

/* ---------- Result extras ---------- */
.rwrap h2{font-size:20px;margin:26px 0 8px}
.answer{white-space:pre-wrap;word-break:break-word;background:#fff;border:1px solid var(--line);border-radius:6px;padding:14px;line-height:1.6;font-size:15px}
.warnw{color:var(--bad);font-weight:700;font-size:14px}
.okw{color:var(--ok);font-weight:700;font-size:14px}
details.dt{background:#fff;border:1px solid var(--line);border-radius:6px;padding:10px 14px;margin:10px 0}
details.dt summary{cursor:pointer;font-weight:700}
.tr p{margin:8px 0;line-height:1.6;font-size:15px}
.tr b{color:var(--muted)}
.rbtns{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.crit td:first-child{white-space:nowrap;font-weight:700}

/* ---------- Progress / admin ---------- */
.prog{margin-top:32px}
.prog h2{font-size:20px;margin:0 0 10px}
.bands{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px;margin:0 0 10px}
.bandbox{background:#fff;border:1px solid var(--line);border-radius:6px;padding:12px}
.bandbox span{font-size:13px;color:var(--muted)}
.bandbox b{display:block;font-size:26px;margin-top:2px}
.bandbox.overall{border:2px solid var(--accent)}
.hwrap input,.hwrap select{padding:9px 12px;border:1px solid #8a949e;border-radius:3px;font-size:15px;background:#fff}
.hwrap .fine a{color:var(--accent)}
.chk{display:flex !important;gap:8px;align-items:flex-start;font-weight:400 !important;margin:0 0 12px !important;line-height:1.45;font-size:15px}
.chk input{margin-top:3px;width:16px;height:16px;flex:none}
#admin{height:100%;overflow:auto;background:var(--soft);padding:32px 16px}

/* ---------- Speaking ---------- */
.k-speaking #paneL,.k-speaking #divider{display:none}
.k-speaking #paneR{flex:1 1 0}
.k-speaking #paneR .pane-in{max-width:820px;margin:0 auto}
.spk .chk{justify-content:flex-end;color:var(--muted);margin-bottom:18px !important}
.examiner{display:flex;gap:14px;align-items:flex-start}
.avatar{width:44px;height:44px;border-radius:50%;background:var(--hdr);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
.bubble{flex:1;background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:14px 16px;font-size:18px;line-height:1.55;min-height:56px}
.cue{border:2px solid var(--ink);border-radius:6px;padding:18px 24px;background:#fff;margin:18px 0 0 58px}
.cue h3{margin:0 0 10px;font-size:19px}
.cue p{margin:8px 0}
.cue ul{margin:6px 0 6px 18px;padding:0;line-height:1.7}
.spk .notebox{flex:none;height:150px;margin:12px 0 0 58px;width:calc(100% - 58px)}
.recbox{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:6px;padding:14px 16px;margin:22px 0 0 58px;font-size:15px;flex-wrap:wrap}
.recdot{width:14px;height:14px;border-radius:50%;background:#b8c0c8;flex:none}
.recbox.on{border-color:var(--red)}
.recbox.on .recdot{background:var(--red)}
@media (prefers-reduced-motion:no-preference){.recbox.on .recdot{animation:pulse 1.1s ease-in-out infinite}}
@keyframes pulse{50%{opacity:.35}}
#recTime{color:var(--muted);font-variant-numeric:tabular-nums}
.meter{flex:1;min-width:90px;height:8px;background:#e6ecf2;border-radius:4px;overflow:hidden}
.meter i{display:block;height:100%;width:0;background:var(--ok)}
.spart{border:1px solid var(--line);padding:8px 14px;border-radius:3px;font-size:15px;color:var(--muted)}
.spart.on{border:2px solid var(--accent);background:#eaf1fe;color:var(--ink)}
.rec{background:#fff;border:1px solid var(--line);border-radius:6px;padding:12px 16px;margin:0 0 10px}
.rechead{display:flex;gap:10px;align-items:baseline}
.recq{margin:6px 0 8px;line-height:1.5}
.rec audio{vertical-align:middle;max-width:100%}
.rec .dl{margin-left:10px;color:var(--accent);font-size:14px}
@media (max-width:640px){.cue,.recbox,.spk .notebox{margin-left:0;width:100%}}

/* ---------- Test picker + tables ---------- */
.testpick{display:grid;gap:8px;margin:0 0 20px}
.tpick{display:flex !important;gap:10px;align-items:flex-start;border:1px solid var(--line);border-radius:6px;padding:10px 14px;cursor:pointer;font-weight:400 !important;margin:0 !important;line-height:1.4}
.tpick:has(input:checked){border-color:var(--accent);background:#eaf1fe}
.tpick input{margin-top:4px;flex:none}
.tpick b{display:block;font-size:16px}
.tpick .tt{color:var(--muted);font-size:14px;display:block}
.tpick .tl{font-size:13px;color:var(--ink);display:block;margin-top:2px}
.dtable{border-collapse:collapse;width:100%;font-size:15px;background:#fff;border:0}
.dtable th,.dtable td{border:1px solid #8a949e;padding:8px 10px;text-align:center}
.dtable thead th{background:var(--soft)}
.dtable tbody th{text-align:left;background:#fafbfc}
.ctitle{margin:4px 4px 10px;font-size:15px}

/* ---------- Profile + user bar ---------- */
#profile{height:100%;overflow:auto;background:var(--soft);display:flex;align-items:flex-start;justify-content:center;padding:32px 16px}
.field{margin:0 0 16px}
.field input,.field select{margin-bottom:0 !important}
.card input[type=email],.card input[type=date],.card select{width:100%;padding:10px 12px;border:1px solid #8a949e;border-radius:3px;font-size:16px;background:#fff;font-family:inherit}
.card label .req{color:var(--bad);font-weight:400;font-size:13px}
.card label .opt{color:var(--muted);font-weight:400;font-size:13px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
@media (max-width:640px){.grid2{grid-template-columns:1fr}}
.perr{color:var(--bad);font-weight:700;min-height:1.4em;margin:6px 0 10px}
.pbtn{display:block;width:100%;text-align:left;margin:0 0 8px}
.plist-sep{border:0;border-top:1px solid var(--line);margin:18px 0}
.who{background:var(--soft);border-radius:4px;padding:10px 14px;margin:0 0 16px;font-size:15px}
.userbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:6px;padding:12px 16px;margin:0 0 20px}
.userbar b{display:block;font-size:17px}
.ub{color:var(--muted);font-size:14px}
.ubtn{display:flex;gap:8px;flex-wrap:wrap}
.ubtn .btn{padding:6px 14px;font-size:14px}

/* ---------- Full test ---------- */
.mod.full{grid-column:1 / -1;flex-direction:row;align-items:center;gap:16px;border:2px solid var(--ink)}
.mod.full .mico{margin:0;background:var(--brand)}
.mod.full .ftxt{display:flex;flex-direction:column;gap:4px;flex:1}
#trans{height:100%;overflow:auto;background:var(--soft);display:flex;align-items:flex-start;justify-content:center;padding:32px 16px}
.steps{display:flex;gap:8px;flex-wrap:wrap;margin:0 0 18px}
.step{border:1px solid var(--line);border-radius:14px;padding:4px 12px;font-size:14px;color:var(--muted);background:#fff}
.step.done{background:#e8f5ec;border-color:#9fd3ad;color:var(--ok)}
.step.now{border-color:var(--accent);color:var(--ink);background:#eaf1fe}
.fullview [data-act=retake],.fullview [data-act=another]{display:none}
.overallbox{border:2px solid var(--accent)}
.rwrap select{padding:6px 10px;font-size:15px;border:1px solid #8a949e;border-radius:3px;background:#fff}

/* ---------- PIN / feedback / marking ---------- */
#auth{height:100%;overflow:auto;background:var(--soft);display:flex;align-items:flex-start;justify-content:center;padding:32px 16px}
#auth .card{max-width:460px}
#auth input[type=password],#auth input[type=text]{width:100%;padding:10px 12px;border:1px solid #8a949e;border-radius:3px;font-size:18px;letter-spacing:.15em;margin:0}
#auth input#aCode{letter-spacing:.08em}
.badge{display:inline-block;background:var(--brand);color:#fff;font-size:12px;font-weight:700;padding:1px 8px;border-radius:10px;vertical-align:middle}
.fbbox{background:#fff;border:1px solid var(--accent);border-radius:6px;padding:14px 16px;margin:0 0 20px}
.fbbox h2{font-size:18px;margin:0 0 8px}
.fbrow{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:8px 0;border-top:1px solid #eceff2}
.fbrow:first-of-type{border-top:0}
.fbrow .btn{padding:5px 14px;font-size:14px;flex:none}
.modal.wide{max-width:880px;max-height:92vh;overflow:auto}
.dhead{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}
.dhead h3{margin:0}
.gradebox{border:2px solid var(--accent);border-radius:6px;padding:14px 16px;margin:16px 0}
.gradebox h4{margin:0 0 10px;font-size:17px}
.gradebox label{display:block;font-size:14px;margin:0 0 4px;font-weight:700}
.gradebox select,.gradebox textarea{width:100%;padding:7px 10px;border:1px solid #8a949e;border-radius:3px;font:15px Arial,sans-serif}
.gradebox textarea{min-height:120px;resize:vertical;line-height:1.5}
.gradebox .g4{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px;margin-bottom:12px}
.tag{display:inline-block;font-size:12px;font-weight:700;padding:1px 8px;border-radius:10px;background:#e8f5ec;color:var(--ok)}
.tag.wait{background:#fff3cd;color:#8a6d00}
@media (max-width:640px){.gradebox .g4{grid-template-columns:1fr}}

/* ---------- Soạn đề ---------- */
#editor{height:100%;overflow:auto;background:var(--soft);padding:0 16px 60px}
#tools{height:100%;overflow:auto;background:var(--soft);padding:0 16px 60px}
.ewrap{max-width:1000px;margin:0 auto}
.etop{position:sticky;top:0;z-index:20;background:var(--soft);border-bottom:1px solid var(--line);padding:12px 0;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.epanel,.epart{background:#fff;border:1px solid var(--line);border-radius:6px;padding:14px 16px;margin:0 0 16px}
.epart .ehead.big h3{margin:0;font-size:19px}
.ehead{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}
.egroup{border:2px solid #dbe3ea;border-radius:6px;padding:12px 14px;margin:14px 0;background:#fbfcfd}
.erow{border:1px solid #e3e8ed;border-radius:5px;padding:10px 12px;margin:10px 0;background:#fff}
.ef{display:block;margin:0 0 10px}
.ef>span{display:block;font-size:13px;font-weight:700;color:#3b444d;margin-bottom:3px}
.ef input[type=text],.ef input[type=number],.ef textarea,.ef select,.optrow input[type=text],.exrow input[type=text]{width:100%;padding:7px 10px;border:1px solid #8a949e;border-radius:3px;font:15px Arial,sans-serif;background:#fff}
.ef textarea{line-height:1.5;resize:vertical}
.ef.narrow{max-width:260px}
.ef.chk{display:flex;gap:8px;align-items:center}
.ef.chk input{width:16px;height:16px}
.grid3{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
.optrow{display:flex;gap:8px;align-items:center;margin:0 0 6px}
.optrow .lbl{width:64px;flex:none}
.optrow input[type=radio]{width:18px;height:18px;flex:none}
.optrow input[type=color]{width:38px;height:34px;padding:0;border:1px solid #8a949e;flex:none}
.listed{margin:10px 0;padding:10px 12px;border:1px dashed #b8c0c8;border-radius:5px}
.mini{border:1px solid #8a949e;background:#fff;border-radius:3px;font-size:13px;padding:3px 9px;cursor:pointer}
.mini:hover{background:var(--soft)}
.mini.big{font-size:15px;padding:6px 14px}
.rb{display:inline-flex;gap:4px}
.addbar{display:flex;gap:6px;flex-wrap:wrap;align-items:center;margin:12px 0 4px}
.exrow{display:grid;grid-template-columns:34px 1fr 2fr;gap:8px;align-items:center;margin:4px 0}
.exrow code{background:#eef2f6;padding:3px 6px;border-radius:3px;font-size:13px;overflow:hidden;text-overflow:ellipsis}
.eerr{background:#fdecea;border:1px solid #f0b4ad;color:#8a1c12;border-radius:6px;padding:10px 14px;margin:0 0 14px}
.eerr ul{margin:6px 0 0;padding-left:20px}
.ewarn{background:#fff8e1;border:1px solid #f0d98a;color:#7a5b00;border-radius:6px;padding:10px 14px;margin:0 0 14px}
.eok{background:#e8f5ec;border:1px solid #9fd3ad;color:#1e6b34;border-radius:6px;padding:10px 14px;margin:0 0 14px}
.preview input,.preview select,.preview textarea,.preview button{pointer-events:none}
.preview{font-size:15px}
.scriptrow .ehead{align-items:flex-end}
@media (max-width:640px){.grid3{grid-template-columns:1fr}.exrow{grid-template-columns:30px 1fr}}

/* ---------- Ô chọn đề gọn ---------- */
.tgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:8px}
.tbox{position:relative;display:flex !important;flex-direction:column;gap:2px;margin:0 !important;font-weight:400 !important;background:#fff;border:1px solid var(--line);border-radius:6px;padding:8px 10px;cursor:pointer;line-height:1.3}
.tbox:hover{border-color:#8a949e}
.tbox input{position:absolute;opacity:0;width:1px;height:1px;pointer-events:none}
.tbox:has(input:checked){border:2px solid var(--accent);background:#eaf1fe;padding:7px 9px}
.tbox:has(input:focus-visible){outline:3px solid #7aa7ff;outline-offset:1px}
.tb-t{font-weight:700;font-size:15px}
.tb-s{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tbox.done .tb-s{color:var(--ok);font-weight:700}
.tinfo{margin-top:10px;background:var(--soft);border-radius:4px;padding:8px 12px;font-size:14px;line-height:1.5;color:#3b444d}
.tinfo b{display:block;color:var(--ink);margin-bottom:2px}
.tinfo .tk{font-weight:700;color:var(--ink)}

/* Các lớp có display:flex !important không được làm mất tác dụng của thuộc tính hidden */
.chk[hidden],.tbox[hidden],.tpick[hidden],label[hidden],.row2[hidden]{display:none !important}

/* Tổng quan chủ đề (giáo viên) */
.eover{margin:0 0 18px}
.eover h3{margin:0 0 8px;font-size:18px}
.ogrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:10px}
.ocard{background:#fff;border:1px solid var(--line);border-radius:6px;padding:10px 12px;font-size:14px;line-height:1.5;color:#3b444d}
.ocard b{display:block;font-size:16px;color:var(--ink);margin-bottom:2px}
.ocard .tk{font-weight:700;color:var(--ink)}

/* ---------- Ghi chú (Notes) ---------- */
.hl.hasnote{border-bottom:2px dotted #b45f06;cursor:pointer}
.hl.nlast::after{content:"✎";font-size:.75em;margin-left:2px;color:#b45f06;vertical-align:super}
.hl.flash{outline:3px solid #ff9800;outline-offset:1px}
.notepop{position:fixed;z-index:75;width:300px;background:#fff;border:1px solid #8a949e;border-radius:6px;box-shadow:0 6px 24px rgba(0,0,0,.3);padding:10px 12px}
.np-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}
.np-head button{border:0;background:none;font-size:16px;cursor:pointer;color:var(--muted)}
.np-quote{font-size:13px;color:var(--muted);font-style:italic;margin-bottom:6px;max-height:3.6em;overflow:hidden}
#npText{width:100%;font:15px/1.45 Arial,sans-serif;padding:8px;border:1px solid #8a949e;border-radius:3px;resize:vertical;min-height:90px}
.np-btns{display:flex;gap:8px;margin-top:8px}
.np-btns .btn{padding:6px 14px;font-size:14px}
.nlist{list-style:none;padding:0;margin:0;max-height:55vh;overflow:auto}
.nlist li{border-bottom:1px solid #eceff2;padding:9px 0}
.nq{color:var(--muted);font-style:italic;font-size:14px}
.nt{white-space:pre-wrap;margin:4px 0 6px;line-height:1.5}
@media (max-width:640px){.notepop{width:calc(100vw - 16px)}}

/* Lớp .who của khung thông báo không được ảnh hưởng thanh đầu của bài thi */
.hdr .who{background:none;border-radius:0;padding:0;margin:0;font-size:14px}
.hl.nlast::after{line-height:0}