/* Shared by every course's player and the portal's pages: the user's menu, dialogs, toasts, the "Ask a teacher"
   button and the progress bar on the course cards (assets/account.js). Uses the players' colour variables. */
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono { font-family: "JetBrains Mono", Consolas, Menlo, monospace; }
.cta.small { padding: 7px 14px; font-size: 14px; border-radius: 8px; }
.link.danger { color: #ff8a80; }
.top-tools { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.who { display: flex; align-items: center; gap: 14px; font-size: 14px; }
.who-l { color: var(--muted); text-decoration: none; }
.who-l:hover, .who-l.on { color: var(--ink); }
.badge { display: inline-block; min-width: 20px; padding: 0 6px; border-radius: 10px; background: var(--orange); color: #fff;
  font-size: 12px; font-weight: 700; text-align: center; line-height: 20px; }
.who-wrap { position: relative; }
.who-me { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 5px 10px; font-size: 14px; }
.who-me::after { content: " ▾"; color: var(--muted); }
.who-drop { position: absolute; right: 0; top: calc(100% + 6px); z-index: 30; min-width: 220px; background: var(--panel);
  border: 1px solid var(--line); border-radius: 10px; padding: 6px; box-shadow: 0 12px 30px rgba(0, 0, 0, .4); }
.who-id { color: var(--muted); font-size: 12px; padding: 6px 10px 8px; border-bottom: 1px solid var(--line); margin-bottom: 4px; }
.who-i { display: block; width: 100%; text-align: left; background: none; border: none; border-radius: 6px; padding: 8px 10px; }
.who-i:hover { background: var(--panel-2); }

.dlg-back { position: fixed; inset: 0; z-index: 50; background: rgba(2, 10, 18, .72); display: flex; align-items: center;
  justify-content: center; padding: 16px; }
.dlg { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 22px 24px; width: min(520px, 100%);
  max-height: calc(100vh - 32px); overflow: auto; box-shadow: 0 20px 60px rgba(0, 0, 0, .5); }
.dlg.wide { width: min(980px, 100%); }
.dlg-t { margin: 0 0 12px; font-size: 21px; }
.dlg-about { margin: 0 0 12px; color: var(--copper); font-size: 14px; }
.dlg-note { color: var(--muted); font-size: 13px; margin: 6px 0 0; }
.dlg-err { color: #ff8a80; margin: 10px 0 0; }
.dlg-btns { display: flex; gap: 10px; margin-top: 18px; }
.fld { display: flex; flex-direction: column; gap: 5px; margin: 0 0 12px; font-size: 14px; color: var(--muted); }
.fld input, .fld textarea, .fld select, .reply textarea, .page-tools input {
  background: #082035; color: var(--ink); border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; font: inherit; }
.fld textarea, .reply textarea { resize: vertical; min-height: 90px; }
.fld input:focus, .fld textarea:focus, .fld select:focus, .reply textarea:focus, .page-tools input:focus { outline: 2px solid var(--accent); outline-offset: 0; }
.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); z-index: 60; background: var(--panel-2);
  border: 1px solid var(--accent); border-radius: 10px; padding: 11px 18px; max-width: calc(100vw - 32px); transition: opacity .6s; }
.toast.go { opacity: 0; }

.login { display: flex; justify-content: center; padding: 8vh 16px; }
.card-form { width: min(400px, 100%); background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 26px 28px; }
.card-form h1 { margin: 0 0 4px; font-size: 26px; }
.card-form .cta { width: 100%; margin-top: 6px; }

.ask { margin: 10px 0 0; }
.prog { height: 4px; background: var(--panel-2); border-radius: 2px; margin-top: 10px; overflow: hidden; }
.prog span { display: block; height: 100%; background: var(--accent); }

.page { max-width: 1400px; margin: 0 auto; padding: 24px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 14px; }
.page-head h1 { margin: 0; font-size: 28px; }
.page-tools { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin: 0 0 12px; }
.page-tabs { border: none; }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 12px; }
table.grid { border-collapse: collapse; width: 100%; font-size: 14px; }
.grid th, .grid td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.grid th { background: #041322; color: var(--muted); font-weight: 600; position: sticky; top: 0; white-space: nowrap; }
.grid .c { text-align: center; min-width: 58px; }
.grid .name { position: sticky; left: 0; background: var(--bg); min-width: 170px; }
.grid th.name { background: #041322; z-index: 1; }
.grid tr.row { cursor: pointer; }
.grid tr.row:hover td { background: var(--panel); }
.grid tr.off td { opacity: .55; }
.grid .acts { white-space: nowrap; text-align: right; }
.grid .acts .link { padding: 4px 6px; }
.grid.detail td { vertical-align: top; }
.pbar { height: 6px; background: var(--panel-2); border-radius: 3px; overflow: hidden; min-width: 44px; margin: 3px auto; }
.grid.detail .pbar { display: inline-block; width: 80px; vertical-align: middle; }
.pbar span { display: block; height: 100%; background: var(--accent); }
.pbar.full span { background: #6fd08c; }
.qs { font-size: 12px; font-weight: 700; margin-top: 3px; }
.qs.good { color: #6fd08c; } .qs.mid { color: var(--copper); } .qs.low { color: #ff8a80; } .qs.none { color: var(--muted); font-weight: 400; }

.qa { display: grid; grid-template-columns: minmax(260px, 380px) 1fr; gap: 18px; align-items: start; }
.threads { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; max-height: calc(100vh - 170px); overflow: auto; }
.th { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; }
.th:hover { border-color: var(--accent); }
.th.on { border-color: var(--accent); background: var(--panel-2); }
.th.unread { box-shadow: inset 3px 0 0 var(--orange); }
.th.unread .th-who { font-weight: 700; color: var(--ink); }
.th-top { display: flex; justify-content: space-between; gap: 8px; font-size: 13px; color: var(--muted); }
.th-first { margin: 4px 0; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.th-meta { font-size: 12px; color: var(--muted); }
.th.empty { cursor: default; padding: 12px; }
.pill { display: inline-block; font-size: 11px; font-weight: 700; padding: 1px 8px; border-radius: 9px; background: var(--panel-2); color: var(--muted); }
.pill.open { background: rgba(232, 137, 43, .2); color: var(--copper); }
.pill.answered { background: rgba(111, 208, 140, .16); color: #6fd08c; }
.thread { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px 22px; min-height: 300px; }
.thread-head h2 { margin: 0 0 4px; font-size: 20px; }
.posts { list-style: none; margin: 14px 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.post { background: #082035; border: 1px solid var(--line); border-radius: 10px; padding: 10px 14px; max-width: 88%; }
.post.teacher { border-color: rgba(95, 214, 255, .45); }
.post.mine { align-self: flex-end; }
.post-h { display: flex; gap: 10px; justify-content: space-between; font-size: 13px; margin-bottom: 4px; }
.post-b { white-space: pre-wrap; overflow-wrap: anywhere; }
.reply { display: flex; flex-direction: column; gap: 10px; }
.reply-btns { display: flex; gap: 10px; flex-wrap: wrap; }

@media (max-width: 760px) {
  .top { padding: 10px 16px; flex-wrap: wrap; }
  .page { padding: 16px; }
  .qa { grid-template-columns: 1fr; }
  .threads { max-height: 40vh; }
  .post { max-width: 100%; }
  .who { gap: 10px; flex-wrap: wrap; }
}
.boxes { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px 10px; }
.boxes legend { padding: 0 6px; }
.boxes .box { display: flex; align-items: center; gap: 8px; color: var(--ink); padding: 3px 0; }