/* Gradeshuttle guided tour: a scripted, scaled stage (1000 × 600 design units). */
.gh-tour {
  --t-ink: #14213D; --t-muted: #64708A; --t-line: #E2E6EE; --t-surface: #FFFFFF; --t-surface-2: #F3F5F9; --t-paper: #FAFAF7;
  --t-green: #1F9D6B; --t-green-ink: #0D6A46; --t-green-soft: #E1F3EA; --t-sun: #F2B33D; --t-sun-soft: #FFF1CF; --t-sun-ink: #8A5A00;
  --t-blue: #3B5BDB; --t-red: #C93C3C; --t-red-soft: #FBE9E9; --t-desk: #DCE3EE; --t-desk-2: #CBD5E4;
  position: relative; width: 100%; font: 400 14px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: var(--t-ink);
}
@media (prefers-color-scheme: dark) {
  .gh-tour { --t-desk: #172238; --t-desk-2: #1E2B45; }
}
.gh-tour * { box-sizing: border-box; }
.gh-tour .t-frame { position: relative; width: 100%; overflow: hidden; border-radius: 20px; background: linear-gradient(160deg, var(--t-desk), var(--t-desk-2)); box-shadow: 0 1px 2px rgba(20,33,61,.08), 0 18px 50px rgba(20,33,61,.16); }
.gh-tour .t-stage { position: absolute; left: 0; top: 0; width: 1000px; height: 600px; transform-origin: 0 0; }
.gh-tour.paused .t-stage * { animation-play-state: paused !important; }

/* browser */
.t-browser { position: absolute; left: 22px; top: 22px; width: 698px; height: 556px; border-radius: 14px; background: var(--t-surface); box-shadow: 0 12px 34px rgba(20,33,61,.18); overflow: hidden; }
.t-tabs { display: flex; gap: 4px; height: 38px; padding: 7px 10px 0; background: #E8ECF2; }
.t-tab { display: flex; align-items: center; gap: 7px; width: 210px; padding: 0 12px; border-radius: 10px 10px 0 0; font-size: 12.5px; font-weight: 600; color: #5A6580; transition: background .3s, color .3s; }
.t-tab i { width: 14px; height: 14px; border-radius: 4px; flex: none; }
.t-tab.on { background: var(--t-surface); color: var(--t-ink); }
.t-addr { height: 34px; display: flex; align-items: center; gap: 8px; padding: 0 12px; border-bottom: 1px solid var(--t-line); background: var(--t-surface); }
.t-addr span { flex: 1; height: 24px; border-radius: 12px; background: var(--t-surface-2); font-size: 12px; color: var(--t-muted); display: flex; align-items: center; padding: 0 12px; }
.t-addr b { width: 24px; height: 24px; border-radius: 7px; display: grid; place-items: center; transition: box-shadow .3s, background .3s; }
.t-addr b.glow { background: var(--t-green-soft); box-shadow: 0 0 0 3px rgba(31,157,107,.35); }
.t-addr b svg { width: 18px; height: 18px; }
.t-view { position: absolute; left: 0; right: 0; top: 72px; bottom: 0; }
.t-page { position: absolute; inset: 0; padding: 16px 18px; transition: opacity .35s, transform .35s; }
.t-page.off { opacity: 0; transform: translateX(16px); pointer-events: none; }

/* class page */
.t-class h4 { margin: 0; font-size: 17px; }
.t-class .sub { font-size: 12px; color: var(--t-muted); }
.t-nav { display: flex; gap: 18px; margin: 10px 0 12px; border-bottom: 1px solid var(--t-line); font-size: 12.5px; font-weight: 600; color: var(--t-muted); }
.t-nav span { padding: 6px 0; border-bottom: 3px solid transparent; }
.t-nav span.on { color: #5b4bdb; border-color: #5b4bdb; }
.t-tbl { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 13px; }
.t-tbl th { text-align: left; font-size: 11px; font-weight: 700; color: var(--t-muted); padding: 6px 10px; border-bottom: 1px solid var(--t-line); }
.t-tbl th b { display: block; color: #5b4bdb; font-size: 12.5px; }
.t-tbl td { padding: 0 10px; height: 41px; border-bottom: 1px solid var(--t-line); transition: background .25s, box-shadow .25s; }
.t-tbl .av { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; color: #fff; font-size: 10px; font-weight: 700; margin-right: 8px; vertical-align: middle; }
.t-tbl .g { font: 700 13.5px ui-monospace, Menlo, monospace; }
.t-tbl .g small { color: var(--t-muted); font-weight: 400; }
.t-tbl .miss { color: var(--t-red); font: 700 10px system-ui, sans-serif; letter-spacing: .05em; margin-left: 4px; }
.t-class.hot .c1 { background: rgba(31,157,107,.16); box-shadow: inset 2px 0 0 var(--t-green), inset -2px 0 0 var(--t-green); }
.t-class.hot .nm { box-shadow: inset 0 0 0 2px rgba(59,91,219,.55); }
.t-class.got .c1 { background: rgba(31,157,107,.10); }

/* gradebook page */
.t-book .bar { display: flex; align-items: center; gap: 12px; margin: -16px -18px 14px; padding: 10px 18px; background: #0b3a5b; color: #fff; font-size: 13px; }
.t-book .bar b { letter-spacing: .03em; }
.t-book .bar .save { margin-left: auto; background: #0b6e4f; border-radius: 6px; padding: 5px 12px; font-weight: 700; font-size: 12.5px; transition: box-shadow .3s; }
.t-book .bar .save.glow { box-shadow: 0 0 0 3px rgba(255,255,255,.6); }
.t-book .bar .saved { font-size: 12px; color: #9FE3C4; font-weight: 700; opacity: 0; transition: opacity .3s; }
.t-book .bar .saved.on { opacity: 1; }
.t-book .t-tbl td { height: 42px; }
.t-book .t-tbl td.n { color: var(--t-muted); width: 28px; }
.t-book .t-tbl a { color: #1d4ed8; text-decoration: underline; }
.t-book .in { width: 64px; height: 28px; border: 1px solid #B9C6D3; border-radius: 5px; display: grid; place-items: center; font: 700 13px ui-monospace, Menlo, monospace; transition: border-color .2s, box-shadow .2s, background .2s; }
.t-book .in.filled { border-color: var(--t-green); box-shadow: 0 0 0 2px rgba(31,157,107,.3); background: var(--t-green-soft); }
.t-book .in.skipped { border: 2px dashed var(--t-sun); }
.t-book .in.typing::after { content: ""; width: 1.5px; height: 15px; background: var(--t-ink); margin-left: 1px; animation: t-caret .6s steps(1) infinite; }
@keyframes t-caret { 50% { opacity: 0; } }
.t-book.hot .c1 { box-shadow: inset 0 0 0 2px var(--t-green); background: rgba(31,157,107,.08); }

/* Gradeshuttle panel */
.t-panel { position: absolute; left: 736px; top: 22px; width: 242px; height: 556px; border-radius: 14px; background: var(--t-paper); box-shadow: 0 12px 34px rgba(20,33,61,.18); overflow: hidden; display: flex; flex-direction: column; transform: translateX(270px); opacity: 0; transition: transform .55s cubic-bezier(.2,.9,.3,1.1), opacity .4s; }
.t-panel.in { transform: none; opacity: 1; }
.t-ph { display: flex; align-items: center; gap: 8px; padding: 10px 12px; background: var(--t-surface); border-bottom: 1px solid var(--t-line); font-weight: 800; font-size: 14.5px; }
.t-ph svg { width: 24px; height: 24px; }
.t-ph .pill { margin-left: auto; font-size: 9.5px; font-weight: 800; letter-spacing: .06em; background: var(--t-surface-2); color: var(--t-muted); padding: 2px 6px; border-radius: 99px; }
.t-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; padding: 7px 10px; background: var(--t-surface); border-bottom: 1px solid var(--t-line); font-size: 10px; font-weight: 700; color: var(--t-muted); }
.t-steps span { display: flex; align-items: center; gap: 4px; }
.t-steps span::before { content: ""; width: 10px; height: 10px; border-radius: 50%; border: 2px solid var(--t-line); flex: none; }
.t-steps span.done { color: var(--t-green-ink); }
.t-steps span.done::before { background: var(--t-green); border-color: var(--t-green); }
.t-steps span.now { color: var(--t-ink); }
.t-steps span.now::before { border-color: var(--t-green); box-shadow: 0 0 0 2px var(--t-green-soft); }
.t-pb { position: relative; flex: 1; padding: 12px; }
.t-pv { position: absolute; inset: 12px; display: flex; flex-direction: column; gap: 10px; transition: opacity .3s, transform .3s; }
.t-pv.off { opacity: 0; transform: translateY(6px); pointer-events: none; }
.t-card { background: var(--t-surface); border: 1px solid var(--t-line); border-radius: 12px; padding: 10px; }
.t-card .eb { font-size: 9.5px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; color: var(--t-green-ink); }
.t-card b { display: block; font-size: 14px; }
.t-card small { color: var(--t-muted); font-size: 11px; }
.t-empty { display: flex; gap: 8px; align-items: center; font-size: 11.5px; color: var(--t-muted); }
.t-empty .il { width: 64px; flex: none; }
.t-chips { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 6px; }
.t-chip { font-size: 10px; font-weight: 700; padding: 2px 6px; border-radius: 99px; background: var(--t-surface-2); color: var(--t-muted); }
.t-chip.ok { background: var(--t-green-soft); color: var(--t-green-ink); } .t-chip.warn { background: var(--t-sun-soft); color: var(--t-sun-ink); }
.t-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.t-btn { height: 64px; border-radius: 12px; border: 1px solid var(--t-line); background: var(--t-surface); display: flex; flex-direction: column; justify-content: center; padding: 0 12px; font-weight: 800; font-size: 14px; transition: transform .1s, box-shadow .2s; }
.t-btn small { font-weight: 400; font-size: 10px; color: var(--t-muted); }
.t-btn.go { background: var(--t-green); border-color: var(--t-green); color: #fff; }
.t-btn.go small { color: rgba(255,255,255,.8); }
.t-btn.press, .t-wide.press { transform: scale(.96); }
.t-wide { height: 36px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; font-size: 13px; background: var(--t-green); color: #fff; transition: transform .1s, background .2s; }
.t-wide.dim { background: var(--t-line); color: var(--t-muted); }
.t-pick { text-align: center; padding-top: 6px; font-size: 12px; color: var(--t-muted); }
.t-pick b { display: block; color: var(--t-ink); font-size: 14px; margin: 6px 0 4px; }
.t-pick .il { width: 170px; margin: 0 auto; }
.t-rv { display: grid; gap: 5px; }
.t-rv div { display: grid; grid-template-columns: 14px 1fr auto; gap: 6px; align-items: center; background: var(--t-surface); border: 1px solid var(--t-line); border-radius: 8px; padding: 5px 7px; font-size: 11.5px; transition: border-color .3s; }
.t-rv div.check { border-color: var(--t-sun); }
.t-rv i { width: 12px; height: 12px; border-radius: 3px; border: 1.5px solid var(--t-line); display: grid; place-items: center; transition: background .2s, border-color .2s; }
.t-rv i.on { background: var(--t-green); border-color: var(--t-green); }
.t-rv i.on::after { content: ""; width: 3px; height: 6px; border: solid #fff; border-width: 0 1.6px 1.6px 0; transform: rotate(45deg) translate(-.5px, -1px); }
.t-rv i.off { opacity: .35; }
.t-rv b { display: block; font-size: 11.5px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.t-rv small { display: block; color: var(--t-muted); font-size: 10px; white-space: nowrap; }
.t-rv .bdg { font: 700 9px system-ui, sans-serif; padding: 0 4px; border-radius: 4px; background: var(--t-surface-2); color: var(--t-muted); margin-left: 3px; }
.t-rv .bdg.warn { background: var(--t-sun-soft); color: var(--t-sun-ink); }
.t-rv .v { font: 800 13px ui-monospace, Menlo, monospace; }
.t-done { text-align: center; }
.t-done .il { width: 110px; margin: 0 auto; }
.t-done b { display: block; font-size: 16px; margin-top: 4px; }
.t-done small { color: var(--t-muted); font-size: 11.5px; }
.t-note { background: var(--t-sun-soft); border-radius: 10px; padding: 8px 10px; font-size: 11.5px; }

/* cursor, flyers */
.t-cursor { position: absolute; left: 0; top: 0; width: 22px; height: 26px; z-index: 30; transform: translate(560px, 640px); will-change: transform; filter: drop-shadow(0 2px 3px rgba(0,0,0,.3)); }
.t-cursor svg { width: 22px; height: 26px; transition: transform .12s; }
.t-cursor.press svg { transform: scale(.86); }
.t-ripple { position: absolute; z-index: 29; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 50%; border: 2.5px solid var(--t-green); animation: t-ripple .55s ease-out forwards; pointer-events: none; }
@keyframes t-ripple { from { transform: scale(.3); opacity: .9; } to { transform: scale(1.5); opacity: 0; } }
.t-fly { position: absolute; z-index: 25; left: 0; top: 0; padding: 3px 9px; border-radius: 99px; background: var(--t-sun); color: #14213D; font: 800 12.5px ui-monospace, Menlo, monospace; box-shadow: 0 4px 12px rgba(20,33,61,.25); transition: transform .9s cubic-bezier(.45,-0.25,.35,1.15), opacity .3s; }

/* caption + controls */
.t-under { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 16px; align-items: center; margin-top: 14px; }
.t-cap { display: flex; gap: 12px; align-items: flex-start; min-height: 52px; }
.t-cap .n { flex: none; width: 30px; height: 30px; border-radius: 50%; background: var(--t-green); color: #fff; display: grid; place-items: center; font-weight: 800; }
.t-cap b { display: block; font-size: 16px; letter-spacing: -.01em; }
.t-cap span { color: var(--t-muted); font-size: 13.5px; }
.t-ctl { display: flex; align-items: center; gap: 10px; padding-right: 4px; }
.t-dots { display: flex; gap: 6px; }
.t-dots button { width: 26px; height: 6px; border-radius: 99px; border: 0; padding: 0; background: var(--t-line); cursor: pointer; position: relative; overflow: hidden; }
.t-dots button span { position: absolute; inset: 0; width: 0; background: var(--t-green); border-radius: 99px; }
.t-dots button.past span { width: 100%; }
@keyframes t-dot { from { width: 0; } to { width: 100%; } }
.t-play { width: 38px; height: 38px; border-radius: 50%; border: 1px solid var(--t-line); background: var(--t-surface); color: var(--t-ink); display: grid; place-items: center; cursor: pointer; }
.t-play svg { width: 16px; height: 16px; }
.t-play:focus-visible, .t-dots button:focus-visible { outline: 3px solid rgba(31,157,107,.5); outline-offset: 2px; }
@media (max-width: 640px) { .t-under { grid-template-columns: minmax(0, 1fr); } }
@media (prefers-reduced-motion: reduce) {
  .gh-tour .t-stage *, .gh-tour .t-stage { transition: none !important; animation: none !important; }
}