/* =========================================================================
   classes.css — class management page (classes-page.js)
   =========================================================================
   Builds on friends.css's .fr-row / .fr-list person-row primitives (loaded
   first) — this file only adds what a class CARD needs on top: the header
   strip with the code chip, the stat line, and the roster's per-student
   move control.
   ========================================================================= */

.cl-card { margin-bottom: var(--space-14); }

/* ---------- Card header: name + code + manage buttons ---------- */
.cl-head { display: flex; align-items: flex-start; gap: var(--space-10); flex-wrap: wrap; margin-bottom: var(--space-4); }
.cl-head__main { flex: 1; min-width: 0; }
.cl-name {
  margin: 0; font: 800 16px var(--fsans); color: var(--text);
  overflow-wrap: anywhere;
}
.cl-code {
  display: inline-block; margin-top: var(--space-4); padding: var(--space-2) var(--space-7); border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg-input);
  font: 700 11px var(--fmono); color: var(--spark-2); letter-spacing: .06em;
  cursor: pointer;
}
.cl-code:hover { border-color: var(--border-hover); }
.cl-teacher { font: 600 12.5px var(--fmono); color: var(--text-dim); margin-left: var(--space-7); }
.cl-head__actions { display: flex; gap: var(--space-5); flex-shrink: 0; }

/* Two-tap delete: the armed state turns the button into a warning so a
   stray click can't wipe a roster (same arm/confirm idea as the Store). */
.cl-btn {
  font: 700 11px var(--fsans); padding: var(--space-5) var(--space-10); border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--bg-input); color: var(--text);
  cursor: pointer; white-space: nowrap;
  transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.cl-btn:hover:not(:disabled) { border-color: var(--border-hover); }
.cl-btn:disabled { opacity: .55; cursor: default; }
.cl-btn.is-danger { color: var(--warning-fg); border-color: var(--warning-bd); }
.cl-btn.is-armed {
  background: var(--warning-fg); border-color: var(--warning-fg);
  color: var(--bg); font-weight: 800;
}

/* ---------- Stat line ---------- */
.cl-stats {
  display: flex; gap: var(--space-14); flex-wrap: wrap; margin: var(--space-10) 0 var(--space-12);
  padding: var(--space-9) 11px; border-radius: var(--radius-md);
  border: 1px solid var(--border); background: color-mix(in oklab, var(--bg-input) 60%, transparent);
}
.cl-stat { display: flex; align-items: baseline; gap: var(--space-5); }
.cl-stat__n { font: 800 15px var(--fsans); color: var(--text); font-variant-numeric: tabular-nums; }
.cl-stat__l { font: 600 12px var(--fsans); letter-spacing: .07em; text-transform: uppercase; color: var(--text-dim); }

/* ---------- Roster ---------- */
.cl-section-lab {
  font: 700 12px var(--fsans); letter-spacing: .058em; text-transform: uppercase;
  color: var(--text-dim); margin: var(--space-12) 0 var(--space-6);
}
.cl-move {
  font: 600 11px var(--fsans); padding: var(--space-4) var(--space-6); border-radius: 7px;
  border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-muted);
  cursor: pointer; max-width: 130px;
}
.cl-move:hover { border-color: var(--border-hover); }

/* The add-student search sits inside the card, visually subordinate to it. */
.cl-add { position: relative; }
.cl-add input { width: 100%; }

/* ---------- The course pointer ----------
   Deliberately the loudest control on the page: it's the one thing a teacher
   changes all year, and getting it wrong is what makes dailies feel wrong. */
.cl-unit { display: flex; align-items: center; gap: var(--space-9); flex-wrap: wrap; }
.cl-unit__blurb {
  margin: 0 0 var(--space-12); font: 500 12.5px var(--fsans); line-height: 1.5;
  color: var(--text-muted);
}
.cl-unit__lab {
  font: 700 12px var(--fsans); letter-spacing: 0.058em; text-transform: uppercase;
  color: var(--text-dim);
}
.cl-unit__sel {
  flex: 1; min-width: 170px;
  font: 700 13px var(--fsans); padding: var(--space-8) var(--space-10); border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-input); color: var(--text);
  cursor: pointer;
  transition: border-color .15s ease;
}
.cl-unit__sel:hover:not(:disabled) { border-color: var(--border-hover); }
.cl-unit__sel:disabled { opacity: .55; cursor: default; }
.cl-unit__note {
  margin: var(--space-9) 0 0; font: 600 11px var(--fmono); line-height: 1.5; color: var(--text-dim);
}
/* The pointer card carries the accent so it reads as the page's primary
   action rather than another neutral panel. */
.cl-pointer { border-color: color-mix(in oklab, var(--accent) 35%, var(--border)); }

/* The per-section override, tucked into each class card — smaller, because
   most sections just follow the teacher's default. */
.cl-unit--section .cl-unit__sel { min-width: 150px; font-size: 12px; padding: var(--space-6) var(--space-8); }
.cl-unit--section .cl-unit__note { margin: 0; }

/* ---------- Custom Rewards ----------
   The "🎁 Custom rewards" card above the class list, and the Prize box
   section grown onto the bottom of every class card. Reuses fr-row/fr-list
   (friends.css) for both the reward list and the prize-box rows — same
   person-row vocabulary the roster already uses. */
.cl-rewards__blurb {
  margin: 0 0 var(--space-12); font: 500 12.5px/1.5 var(--fsans); color: var(--text-muted);
}
.cl-rewards__presets {
  display: flex; flex-wrap: wrap; gap: var(--space-8); margin-bottom: var(--space-12);
}
.cl-rewards__presets:empty { display: none; }
.cl-rewards__chip {
  display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
  padding: var(--space-7) var(--space-10); border-radius: var(--radius-md);
  border: 1px solid var(--border); background: var(--bg-input); color: var(--text);
  cursor: pointer; text-align: left; max-width: 220px;
  transition: border-color .15s ease, background .15s ease;
}
.cl-rewards__chip:hover { border-color: var(--spark-bd); background: var(--bg-elevated); }
.cl-rewards__chip-name { font: 700 12.5px var(--fsans); color: var(--text); }
.cl-rewards__chip-note { font: 500 11px/1.4 var(--fmono); color: var(--text-dim); }

.cl-rewards__form { display: flex; flex-direction: column; gap: var(--space-8); margin-bottom: var(--space-4); }
.cl-rewards__row { display: flex; gap: var(--space-8); flex-wrap: wrap; align-items: center; }
.cl-rewards__kind, .cl-rewards__sel {
  font: 700 12.5px var(--fsans); padding: var(--space-7) var(--space-9); border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-input); color: var(--text); cursor: pointer;
}
.cl-rewards__target { display: flex; gap: var(--space-8); flex-wrap: wrap; align-items: center; flex: 1; min-width: 160px; }
.cl-rewards__num {
  width: 90px; font: 700 12.5px var(--fmono); padding: var(--space-7) var(--space-9); border-radius: 9px;
  border: 1px solid var(--border); background: var(--bg-input); color: var(--text);
}
.cl-rewards__repeat {
  display: inline-flex; align-items: center; gap: var(--space-5);
  font: 600 11.5px var(--fsans); color: var(--text-muted); cursor: pointer;
}

.cl-rewards__retired { font: 600 11px var(--fmono); color: var(--text-dim); }
.fr-row.is-retired { opacity: .55; }

.cl-rewards__handedout { margin-top: var(--space-8); }
.cl-rewards__handedout summary {
  cursor: pointer; font: 700 11.5px var(--fsans); color: var(--text-dim); list-style: none;
}
.cl-rewards__handedout summary::-webkit-details-marker { display: none; }
.cl-rewards__handedout summary::before { content: '▸ '; }
.cl-rewards__handedout[open] summary::before { content: '▾ '; }
.cl-rewards__handedout .fr-list { margin-top: var(--space-6); }
.cl-rewards__handedtag { font: 600 11px var(--fmono); color: var(--text-dim); }

/* =========================================================================
   Class organizer (organizer.js) — picker, tabs, Overview, Students, taught
   list. Built on hub.css's .etac-card; the accent carries progress (bars),
   nothing here names a colour. Motion is js/motion.js's, not CSS's.
   ========================================================================= */
.co-bar { margin-bottom: var(--space-14); }
.co-picker { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-10); }
.co-lab, .co-eyebrow { font: 700 11px/1 var(--fsans); letter-spacing: .115em; text-transform: uppercase; color: var(--text-dim); }
.co-picker__sel {
  min-width: 240px; max-width: 100%; height: 44px; padding: 0 var(--space-14);
  border: 1px solid var(--border-hover); border-radius: var(--radius-lg); background: var(--bg-input);
  color: var(--text); font: 700 15px var(--fsans);
}
.co-picker__sel:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.co-picker__meta { font: 500 13px var(--fsans); color: var(--text-dim); }

.co-tabs { display: flex; gap: 28px; border-bottom: 1px solid var(--border); margin-bottom: var(--space-18); overflow-x: auto; }
.co-tab {
  position: relative; display: inline-flex; align-items: center; gap: var(--space-8); min-height: 48px; padding: 0 2px;
  border: 0; background: transparent; color: var(--text-muted); font: 700 15px var(--fsans); cursor: pointer; white-space: nowrap;
}
.co-tab:hover { color: var(--text); }
.co-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: var(--radius-sm); }
.co-tab.is-active { color: var(--text); }
.co-tab.is-active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; border-radius: 2px; background: var(--accent);
  transform-origin: left; animation: co-draw .5s cubic-bezier(.22, 1, .36, 1) both;
}
@keyframes co-draw { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.co-badge {
  font: 700 11px/1 var(--fsans); letter-spacing: .04em; padding: 4px var(--space-8); border-radius: var(--radius-pill);
  border: 1px solid var(--accent); color: var(--accent);
}
.co-badge[hidden] { display: none; }

.co-panel { display: flex; flex-direction: column; gap: var(--space-18); }
.co-panel[hidden] { display: none; }
.co-card { display: flex; flex-direction: column; gap: 22px; padding: 22px var(--space-24); border-radius: 16px; }
.co-card--list { gap: 0; }
.co-card__head { display: flex; align-items: flex-start; justify-content: space-between; gap: var(--space-24); flex-wrap: wrap; }
.co-h2 { margin: var(--space-6) 0 0; font: 700 22px/1.15 "Bricolage Grotesque", var(--fsans); letter-spacing: -.015em; color: var(--text); }
.co-group { margin: var(--space-14) 0 0; font-size: 18px; color: var(--text-muted); }
.co-sub { margin: var(--space-6) 0 0; font: 400 14px/1.45 var(--fsans); color: var(--text-muted); }
.co-sub b, .co-note b { color: var(--text); }
.co-note { margin: 0; font: 400 14px/1.5 var(--fsans); color: var(--text-muted); }
.co-dim { font: 500 12.5px var(--fsans); color: var(--text-dim); }
.co-acc { color: var(--accent); font-weight: 700; }
.co-mono { font: 500 11.5px var(--fmono); color: var(--text-dim); }
.co-link { border: 0; background: transparent; padding: 0; color: var(--accent); font: 700 14px var(--fsans); cursor: pointer; text-align: left; }
.co-link:hover { text-decoration: underline; text-underline-offset: 3px; }
.co-quiet { border: 0; background: transparent; padding: var(--space-8) 0; color: var(--text-muted); font: 600 13px var(--fsans); cursor: pointer; }
.co-quiet:hover, .co-quiet.is-armed { color: var(--text); }
.co-quiet.is-armed { font-weight: 700; }

.co-chip {
  display: inline-flex; align-items: center; gap: var(--space-6); padding: 6px var(--space-10); border-radius: var(--radius-pill);
  border: 1px solid var(--border-hover); color: var(--text-muted); font: 700 11px/1 var(--fsans); letter-spacing: .04em; white-space: nowrap;
}
.co-chip--acc { border-color: var(--accent); color: var(--accent); }
.co-chips { display: flex; flex-wrap: wrap; gap: var(--space-8); }

.co-track { height: 8px; border-radius: var(--radius-pill); background: var(--bg-input); border: 1px solid var(--border); overflow: hidden; }
.co-track.is-dashed { border-style: dashed; background: transparent; }
.co-fill { display: block; height: 100%; border-radius: var(--radius-pill); background: var(--accent); }

.co-strip { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-8); padding: var(--space-12) var(--space-16); border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--bg-elevated); }
.co-strip__lab { font: 600 13.5px var(--fsans); color: var(--text-muted); margin-right: var(--space-4); }
.co-strip .co-link { margin-left: auto; }

.co-seg { display: inline-flex; gap: var(--space-4); padding: var(--space-4); background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-lg); }
.co-seg button { min-height: 36px; padding: 0 var(--space-14); border: 0; border-radius: var(--radius-sm); background: transparent; color: var(--text-muted); font: 600 13px var(--fsans); cursor: pointer; transition: background .2s cubic-bezier(.22, 1, .36, 1), color .2s; }
.co-seg button:hover { color: var(--text); }
.co-seg button.is-on { background: var(--accent); color: var(--accent-ink, #1a1206); }

.co-weak { display: flex; gap: 40px; align-items: flex-start; }
.co-weak__units { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; gap: var(--space-16); }
.co-unit { display: flex; flex-direction: column; gap: 7px; }
.co-unit__top { display: flex; justify-content: space-between; align-items: center; gap: var(--space-10); }
.co-unit__name { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-8); font: 600 14px var(--fsans); color: var(--text-muted); }
.co-unit.is-dim .co-unit__name { color: var(--text-dim); }
.co-unit__pct { font: 700 13px var(--fsans); color: var(--text); font-variant-numeric: tabular-nums; }
.co-unit__pct.is-dim { color: var(--text-dim); font-weight: 600; font-size: 12.5px; }
.co-unit__note { font: 500 12.5px var(--fsans); color: var(--text-dim); font-variant-numeric: tabular-nums; }
.co-legend { margin: 0; }

.co-topics { flex: 0 0 min(400px, 42%); display: flex; flex-direction: column; gap: var(--space-14); padding: 20px; border-radius: var(--radius-lg); background: var(--bg-input); border: 1px solid var(--border); }
.co-topics__head { display: flex; align-items: center; justify-content: space-between; }
.co-cols { height: 150px; display: flex; align-items: flex-end; gap: var(--space-6); border-bottom: 1px solid var(--border); }
.co-col { flex: 1 1 0; height: 100%; display: flex; align-items: flex-end; }
.co-col__bar { width: 100%; border-radius: 5px 5px 2px 2px; background: color-mix(in oklab, var(--accent) 36%, var(--bg-input)); }
.co-col__bar.is-low { background: var(--accent); }
.co-collabs { display: flex; gap: var(--space-6); }
.co-col__lab { flex: 1 1 0; text-align: center; font: 500 10.5px var(--fmono); color: var(--text-dim); }
.co-col__lab.is-low { color: var(--accent); font-weight: 700; }
.co-topics__note { margin: 0; font: 400 14px/1.45 var(--fsans); color: var(--text-muted); }
.co-topics__note b { color: var(--text); }

.co-mrow {
  display: grid; grid-template-columns: 92px minmax(0, 1fr) 190px 132px; gap: 22px; align-items: center;
  padding: var(--space-16) var(--space-10); border-top: 1px solid var(--border); border-radius: var(--radius-md);
  transition: background .2s cubic-bezier(.22, 1, .36, 1);
}
.co-mrow:hover { background: color-mix(in oklab, var(--accent) 6%, transparent); }
.co-mrow__id { display: flex; flex-direction: column; gap: var(--space-6); align-items: flex-start; }
.co-stem { margin: 0; font: 400 15px/1.4 var(--fsans); color: var(--text); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.co-mrow__stat { display: flex; flex-direction: column; gap: var(--space-6); }
.co-mrow__nums { display: flex; justify-content: space-between; font: 400 13px var(--fsans); font-variant-numeric: tabular-nums; }
.co-mrow__acts { display: flex; align-items: center; justify-content: flex-end; gap: var(--space-14); }
.co-go { transition: transform .25s cubic-bezier(.22, 1, .36, 1); }
.co-mrow:hover .co-go { transform: translateX(3px); }

.co-row { display: flex; gap: var(--space-24); }
.co-half { flex: 1 1 0; min-width: 0; gap: var(--space-14); }
.co-big { display: flex; align-items: baseline; gap: var(--space-8); }
.co-big__n { font: 700 40px/1 "Bricolage Grotesque", var(--fsans); font-variant-numeric: tabular-nums; color: var(--text); }

.co-toolbar { display: flex; align-items: center; gap: var(--space-12); margin-bottom: var(--space-18); flex-wrap: wrap; }
.co-input { flex: 1 1 200px; height: 44px; padding: 0 var(--space-14); border: 1px solid var(--border-hover); border-radius: var(--radius-md); background: var(--bg-input); color: var(--text); font: 500 14px var(--fsans); }
.co-input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.co-shead, .co-srow { display: grid; grid-template-columns: minmax(0, 1.5fr) 230px 110px 80px 130px; gap: var(--space-24); align-items: center; }
.co-shead { padding: 0 var(--space-14) var(--space-12); }
.co-srow { padding: var(--space-14); border-top: 1px solid var(--border); border-radius: var(--radius-md); transition: background .2s cubic-bezier(.22, 1, .36, 1); }
.co-srow:hover { background: color-mix(in oklab, var(--accent) 6%, transparent); }
.co-srow__who { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-10); min-width: 0; }
.co-av { width: 36px; height: 36px; flex: none; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; background: var(--bg-input); border: 1px solid var(--border-hover); color: var(--text-muted); font: 700 13px var(--fsans); }
.co-srow__mastery { display: flex; align-items: center; gap: var(--space-12); }
.co-srow__mastery .co-track { flex: 1; }
.co-pct { width: 34px; text-align: right; font: 700 13px var(--fsans); font-variant-numeric: tabular-nums; }
.co-srow__streak { font: 700 14px var(--fsans); font-variant-numeric: tabular-nums; color: var(--text-muted); }
.co-srow__when { font: 500 13.5px var(--fsans); color: var(--text-muted); }
.co-srow__when.is-now { color: var(--text); }
.co-foot { margin: var(--space-14) 0 0; padding-top: var(--space-14); border-top: 1px solid var(--border); }

.co-banner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; padding: var(--space-14) var(--space-18); border-radius: var(--radius-lg); background: var(--accent-soft); border: 1px solid color-mix(in oklab, var(--accent) 45%, transparent); }
.co-banner p { margin: 0; font: 400 14.5px/1.45 var(--fsans); color: var(--text); }
.co-banner__acts { display: flex; align-items: center; gap: var(--space-14); }
#co-qe-banner[hidden], [data-co-qe-banner][hidden] { display: none; }
.co-panel[data-co-panel="questions"] { gap: var(--space-14); }

.co-taught { display: flex; flex-direction: column; gap: var(--space-12); }
.co-taught.is-saving { opacity: .7; }
.co-taught__list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-8); }
.co-taught__row {
  display: flex; align-items: center; gap: var(--space-12); min-height: 48px; padding: 0 var(--space-14); cursor: pointer;
  border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--bg-input);
  transition: border-color .2s cubic-bezier(.22, 1, .36, 1), background .2s;
}
.co-taught__row:hover { border-color: var(--border-hover); }
.co-taught__row.is-on { border-color: var(--accent); background: var(--accent-soft); }
.co-taught__row input { width: 18px; height: 18px; accent-color: var(--accent); flex: none; }
.co-taught__name { flex: 1; min-width: 0; font: 600 14px var(--fsans); color: var(--text); }
.co-taught__state { font: 700 11px/1 var(--fsans); letter-spacing: .04em; color: var(--text-dim); }
.co-taught__row.is-on .co-taught__state { color: var(--accent); }
.co-taught__warn { margin: 0; font: 600 14px/1.45 var(--fsans); color: var(--warning-fg); }

@media (max-width: 900px) {
  .co-weak { flex-direction: column; }
  .co-topics { flex-basis: auto; width: 100%; }
  .co-row { flex-direction: column; }
  .co-mrow { grid-template-columns: 1fr; gap: var(--space-12); }
  .co-mrow__acts { justify-content: flex-start; }
  .co-shead { display: none; }
  .co-srow { grid-template-columns: 1fr 1fr; gap: var(--space-10); }
  .co-srow__who { grid-column: 1 / -1; }
  .co-srow__mastery { grid-column: 1 / -1; }
  .co-taught__list { grid-template-columns: 1fr; }
  .co-strip .co-link { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .co-tab.is-active::after { animation: none; }
  .co-go, .co-mrow, .co-srow, .co-seg button, .co-taught__row { transition: none; }
}