/* ============================================================
   Tutor + admin dashboards (2026-10-05)
   Loaded only by /teach/dashboard/ and /admin/, after style.css.
   Extends the existing dashboard look (modules, roster, coupon card);
   it adds the schedule, wrap-up list, session notes, dialogs and toast.
   ============================================================ */

/* two-column band under the KPI row */
.dash-cols{display:grid;grid-template-columns:1.35fr 1fr;gap:16px;margin-bottom:16px;align-items:start;}
.dcard{background:var(--white);border:1px solid var(--line-ui);border-radius:var(--r);box-shadow:var(--shadow-sm);overflow:hidden;}
.dcard-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:18px 22px 14px;}
.dcard-head h2{font-size:16px;}
.dcard-head p{font-size:12.5px;color:var(--muted);margin-top:3px;}
.dcard-head .count{font-family:var(--font-mono);font-size:11px;font-weight:600;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums;}
.dcard-body{padding:0 22px 18px;}

/* ---------- upcoming schedule ---------- */
.sched-day{font-size:12.5px;font-weight:700;color:var(--ink);padding:14px 0 8px;display:flex;align-items:baseline;gap:8px;}
.sched-day:first-child{padding-top:2px;}
.sched-day small{font-weight:500;color:var(--muted);font-size:12px;}
.sched-day.today{color:var(--teal);}
.sched-row{display:grid;grid-template-columns:78px 1fr auto;gap:14px;align-items:start;padding:12px 0;border-top:1px solid var(--line-ui);}
.sched-day + .sched-row{border-top:none;}
.sched-time{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}
.sched-time b{display:block;font-size:13px;font-weight:600;color:var(--ink);}
.sched-time span{font-size:11px;color:var(--muted);}
.sched-who strong{display:block;font-size:14px;color:var(--ink);line-height:1.35;}
.sched-who .sched-meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:5px;font-size:12px;color:var(--muted);}
.sched-last{margin-top:8px;font-size:12.5px;color:var(--body);line-height:1.45;background:#f7f9fa;border-radius:8px;padding:8px 10px;max-width:60ch;}
.sched-last b{font-weight:700;color:var(--ink);}
.sched-row .btn{white-space:nowrap;}
.sched-row.live{background:linear-gradient(90deg,var(--teal-tint),transparent 70%);margin:0 -22px;padding-left:22px;padding-right:22px;}
.live-dot{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--teal);}
.live-dot::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 0 3px rgba(0,112,123,.18);}

/* ---------- wrap-up list ---------- */
.wrap-row{display:flex;align-items:center;gap:12px;padding:12px 0;border-top:1px solid var(--line-ui);}
.wrap-row:first-child{border-top:none;}
.wrap-row .wr-body{flex:1;min-width:0;}
.wrap-row .wr-body strong{display:block;font-size:13.5px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.wrap-row .wr-body span{font-size:12px;color:var(--muted);}
.wrap-sub{font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);padding:16px 0 4px;}
.chip.due{background:var(--gold-tint);color:#8f6c12;}

/* ---------- roster controls + notes timeline ---------- */
.roster-scroll{position:relative;} /* keeps the hidden "Actions" header label inside the scroller on phones */
.roster-tools{display:flex;gap:8px;flex-wrap:wrap;align-items:center;}
.rb-select,.rb-input{
  font-family:var(--font-ui);font-size:13.5px;color:var(--ink);background:var(--white);
  border:1px solid #cfd7da;border-radius:9px;padding:8px 12px;min-height:38px;
}
.rb-select{padding-right:30px;appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b6b6b' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 11px center;cursor:pointer;}
.rb-select:focus,.rb-input:focus{outline:none;border-color:var(--teal);box-shadow:var(--focus);}
.rb-input::placeholder{color:#6b7579;}
.visually-hidden-label{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

.detail-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:22px;align-items:start;}
.detail-grid h3{display:flex;align-items:baseline;justify-content:space-between;gap:10px;}
.detail-grid h3 small{font-family:var(--font-mono);font-size:10.5px;font-weight:600;color:var(--muted);}
.notes-timeline{list-style:none;background:var(--white);border:1px solid var(--line-ui);border-radius:10px;}
.notes-timeline li{padding:13px 16px;border-top:1px solid var(--line-ui);}
.notes-timeline li:first-child{border-top:none;}
.nt-head{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:12px;color:var(--muted);margin-bottom:6px;}
.nt-head b{font-size:12.5px;color:var(--ink);font-weight:700;}
.nt-head .linkbtn{margin-left:auto;}
.nt-note{font-size:13px;color:var(--body);line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;}
.nt-note + .nt-note{margin-top:6px;}
.nt-label{display:block;font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin-bottom:2px;}
.nt-empty{padding:16px;font-size:13px;color:var(--muted);}
.watch-scroll{max-height:320px;overflow:auto;border-radius:10px;}

/* ---------- dialogs ---------- */
.rb-dialog{border:none;padding:0;margin:auto;border-radius:var(--r-lg);box-shadow:var(--shadow-lg);width:min(620px,calc(100vw - 32px));max-height:calc(100vh - 48px);color:var(--body);background:var(--white);}
.rb-dialog::backdrop{background:rgba(11,31,42,.5);}
.rb-dialog[open]{display:flex;flex-direction:column;animation:rbDlgIn .22s cubic-bezier(.16,1,.3,1);}
@keyframes rbDlgIn{from{opacity:0;transform:translateY(10px) scale(.985);}to{opacity:1;transform:none;}}
@media (prefers-reduced-motion:reduce){.rb-dialog[open]{animation:none;}}
.dlg-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:20px 24px 16px;border-bottom:1px solid var(--line-ui);}
.dlg-head h2{font-size:17px;}
.dlg-head p{font-size:13px;color:var(--muted);margin-top:3px;}
.dlg-close{background:none;border:none;cursor:pointer;color:var(--muted);padding:6px;border-radius:7px;display:flex;flex-shrink:0;}
.dlg-close:hover{background:var(--ivory);color:var(--ink);}
.dlg-close:focus-visible{outline:none;box-shadow:var(--focus);}
.dlg-body{padding:18px 24px 6px;overflow-y:auto;}
.dlg-foot{display:flex;justify-content:flex-end;align-items:center;gap:8px;padding:14px 24px;border-top:1px solid var(--line-ui);flex-wrap:wrap;}
.dlg-foot .dlg-msg{margin-right:auto;font-size:13px;color:var(--muted);}
.dlg-foot .dlg-msg.err{color:#a3423e;font-weight:700;}
.dlg-section{margin-bottom:18px;}
.dlg-label{display:block;font-size:13.5px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.dlg-hint{font-size:12.5px;color:var(--muted);margin-top:6px;line-height:1.45;}
.dlg-note{font-size:12.5px;line-height:1.45;color:#6b5512;background:var(--gold-tint);border:1px solid #ecd9a8;border-radius:9px;padding:10px 12px;margin-bottom:16px;}
.rb-textarea{
  width:100%;font-family:var(--font-ui);font-size:14px;line-height:1.5;color:var(--ink);background:var(--white);
  border:1px solid #cfd7da;border-radius:9px;padding:10px 12px;resize:vertical;min-height:84px;
}
.rb-textarea:focus{outline:none;border-color:var(--teal);box-shadow:var(--focus);}
.rb-textarea::placeholder{color:#6b7579;}
.rb-field-input{width:100%;font-family:var(--font-ui);font-size:14px;color:var(--ink);border:1px solid #cfd7da;border-radius:9px;padding:10px 12px;}
.rb-field-input:focus{outline:none;border-color:var(--teal);box-shadow:var(--focus);}
.rb-field-row{display:grid;grid-template-columns:1fr 1fr 110px;gap:12px;}

/* segmented choice (radio group) */
.seg{display:inline-flex;flex-wrap:wrap;gap:4px;background:#f1f4f5;border-radius:10px;padding:4px;}
.seg label{position:relative;cursor:pointer;}
.seg input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer;}
.seg span{display:block;font-size:13px;font-weight:700;color:var(--muted);padding:7px 13px;border-radius:7px;transition:background-color .15s,color .15s,box-shadow .15s;}
.seg label:hover span{color:var(--ink);}
.seg input:checked + span{background:var(--white);color:var(--ink);box-shadow:var(--shadow-sm);}
.seg input:focus-visible + span{box-shadow:var(--focus);}
.seg.sm span{font-size:12px;padding:5px 10px;}

.stu-block{border:1px solid var(--line-ui);border-radius:12px;padding:14px 14px 12px;margin-bottom:12px;}
.stu-block-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;flex-wrap:wrap;}
.stu-block-head strong{font-size:14px;color:var(--ink);}
.stu-block-head span{font-size:12px;color:var(--muted);margin-left:6px;}
.stu-block.absent .rb-textarea{background:#fafbfb;}

/* coupon recipients + email preview */
.rcpt-list{border:1px solid var(--line-ui);border-radius:10px;max-height:220px;overflow:auto;}
.rcpt{display:flex;align-items:center;gap:11px;padding:10px 14px;border-top:1px solid var(--line-ui);cursor:pointer;}
.rcpt:first-child{border-top:none;}
.rcpt:hover{background:#fbfcfc;}
.rcpt input{width:16px;height:16px;accent-color:var(--teal);flex-shrink:0;}
.rcpt .r-body{flex:1;min-width:0;}
.rcpt .r-body strong{display:block;font-size:13.5px;color:var(--ink);}
.rcpt .r-body span{font-size:12px;color:var(--muted);}
.rcpt-tools{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;}
.linkbtn{background:none;border:none;font-family:var(--font-ui);font-size:12.5px;font-weight:700;color:var(--teal);cursor:pointer;padding:2px 0;}
.linkbtn:hover{text-decoration:underline;}
.linkbtn:focus-visible{outline:none;box-shadow:var(--focus);border-radius:4px;}
.mail-preview{border:1px solid var(--line-ui);border-radius:10px;overflow:hidden;}
.mail-preview .mp-head{background:#f7f9fa;border-bottom:1px solid var(--line-ui);padding:10px 14px;font-size:12.5px;color:var(--muted);}
.mail-preview .mp-head b{color:var(--ink);}
.mail-preview .mp-body{padding:14px;font-size:13.5px;line-height:1.55;color:var(--body);white-space:pre-wrap;}
.mail-preview .mp-code{font-family:var(--font-mono);font-weight:600;color:var(--ink);background:var(--ivory);padding:1px 6px;border-radius:5px;}
.send-result{list-style:none;font-size:13px;}
.send-result li{display:flex;justify-content:space-between;gap:10px;padding:8px 0;border-top:1px solid var(--line-ui);}
.send-result li:first-child{border-top:none;}

/* admin bits */
.lapsed-row .sent-chip,.rcpt .sent-chip{font-size:11.5px;color:var(--muted);white-space:nowrap;}
.lapsed-row .btn{flex-shrink:0;}
.enroll-strip{display:flex;gap:18px;flex-wrap:wrap;padding:10px 0 12px;margin-bottom:4px;border-bottom:1px solid var(--line-ui);}
.enroll-strip div{font-size:12px;color:var(--muted);}
.enroll-strip b{display:block;font-family:var(--font-head);font-size:20px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;}
.tcard .tc-sub{font-size:12.5px;color:var(--muted);margin-top:12px;padding-top:10px;border-top:1px solid var(--line-ui);}
.tcard .tc-sub b{color:var(--ink);font-weight:700;}
.tc-stat b.warn{color:#8f6c12;}
.kpi-num,.big-stat{font-variant-numeric:tabular-nums;}

/* toast */
.rb-toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,12px);background:var(--ink);color:#fff;font-size:13.5px;font-weight:600;
  padding:11px 18px;border-radius:10px;box-shadow:var(--shadow-lg);z-index:1000;opacity:0;pointer-events:none;transition:opacity .2s,transform .25s cubic-bezier(.16,1,.3,1);max-width:calc(100vw - 32px);}
.rb-toast.show{opacity:1;transform:translate(-50%,0);}

/* sample-data ribbon (preview copy only) */
.demo-note{font-size:12.5px;color:#6b5512;background:var(--gold-tint);border:1px dashed #d9bf73;border-radius:9px;padding:8px 12px;margin-bottom:16px;}

::selection{background:rgba(0,112,123,.18);}

/* legibility floor on these two pages: small labels at 11px, empty-state text readable */
.module .mod-title,.kpi .kpi-label,.roster th,.watch-table th,.rb-empty p{font-size:11px;}
.rb-empty{color:#8a8076;}
.rb-empty p{color:var(--muted);}

@media (max-width:980px){
  .dash-cols,.detail-grid{grid-template-columns:1fr;}
}
@media (max-width:640px){
  .dcard-head,.dcard-body{padding-left:16px;padding-right:16px;}
  .sched-row{grid-template-columns:64px 1fr;}
  .sched-row > .sched-act{grid-column:2;}
  .sched-row.live{margin:0 -16px;padding-left:16px;padding-right:16px;}
  .rb-field-row{grid-template-columns:1fr;}
  .dlg-head,.dlg-body,.dlg-foot{padding-left:18px;padding-right:18px;}
  .lapsed-row{flex-wrap:wrap;}
  .lapsed-row .lr-body{flex-basis:calc(100% - 60px);}
}