/* ============================================================
   Curriculum Library browser — wide multi-program view
   (Slide 06 demo). Builds on deck.css tokens & .lib-* styles.
   ============================================================ */

/* ---- program tabs + unit list (left tree) ---- */
#lib-progtabs .t { cursor: pointer; user-select: none; white-space: nowrap; }
.lib-tree { display: flex; flex-direction: column; min-height: 0; }
#lib-progtabs { flex: none; }
#lib-unit { flex: 1; min-height: 0; overflow-y: auto; margin: 0 -6px; padding: 0 6px; }

.lib-grp {
  position: sticky; top: 0; z-index: 2; background: #fff;
  font-family: var(--font-display); font-weight: 800; font-size: 10.5px;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--prog-ink, var(--bt-blue));
  padding: 9px 4px 5px; margin-top: 4px;
  border-bottom: 1px solid var(--border-1);
}

.br-note {
  font-size: 12px; line-height: 1.6; color: var(--fg-1); padding: 16px 22px;
}
.br-note strong { color: var(--ink-900); }
.br-note-link {
  color: var(--prog-ink, var(--bt-blue)); font-family: var(--font-display);
  font-weight: 700; cursor: pointer; text-decoration: none;
}
.br-note-link:hover { text-decoration: underline; }

.lib-unit-h { padding: 2px 2px 12px; }
.lib-unit-h .u-name {
  font-family: var(--font-display); font-weight: 800; font-size: 12.5px;
  line-height: 1.2; color: var(--ink-900);
}
.lib-unit-h .u-grade {
  font-size: 10px; color: var(--fg-3); margin-top: 3px;
  letter-spacing: 0.02em;
}
.lib-unit-h .u-count {
  display: inline-block; margin-top: 8px;
  font-family: var(--font-display); font-weight: 700; font-size: 9px;
  letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--prog-ink, var(--prog-accent, var(--bt-blue)));
  background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 12%, white);
  border-radius: 999px; padding: 4px 9px;
}
.lib-unit-h .u-note {
  margin-top: 7px;
  font-size: 10px; line-height: 1.35; color: var(--fg-2);
  display: flex; align-items: center; gap: 5px;
}
.lib-unit-h .u-note::before {
  content: ""; flex: 0 0 auto; width: 6px; height: 6px; border-radius: 999px;
  background: var(--prog-accent, var(--bt-blue));
}

.lib-unit .subgroup.lesson {
  padding: 7px 8px 7px 12px; border-radius: 8px;
  display: flex; align-items: baseline; gap: 7px; line-height: 1.25;
  margin-bottom: 1px;
}
.lib-unit .subgroup.lesson .lz-code {
  font-family: var(--font-display); font-weight: 800; font-size: 10px;
  color: var(--prog-ink, var(--prog-accent, var(--bt-blue))); flex: none;
}
.lib-unit .subgroup.lesson.active { background: var(--prog-accent, var(--bt-blue)); color: var(--prog-on, #fff); }
.lib-unit .subgroup.lesson.active .lz-code { color: var(--prog-on, #fff); opacity: 0.72; }
.lib-unit .subgroup.lesson .lz-star {
  margin-left: auto; flex: none; font-size: 9px; font-weight: 700;
  color: var(--bt-yellow); letter-spacing: 0.04em;
}
.lib-unit .subgroup.lesson.active .lz-star { color: var(--bt-yellow); }

.lib-unit .leaf { padding: 3px 6px 3px 30px; }
.lib-unit .leaf.flag .ic { background: var(--bt-orange); }
.lib-unit .leaf.leaf-link {
  text-decoration: none; color: var(--fg-2); cursor: pointer;
  border-radius: 7px; transition: background 120ms, color 120ms;
}
.lib-unit .leaf.leaf-link .ic { background: var(--prog-accent, var(--bt-blue)); }
.lib-unit .leaf.leaf-link:hover {
  color: var(--prog-ink, var(--prog-accent, var(--bt-blue)));
  background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 9%, white);
}
.lib-unit .leaf.leaf-link .leaf-ar { margin-left: auto; font-weight: 800; font-size: 10px; color: var(--prog-ink, var(--prog-accent, var(--bt-blue))); }

/* per-step formative-assessment link in the lesson plan */
.detail-browse .lib-step.has-fa .body { margin-bottom: 4px; }
.detail-browse .fa-link {
  display: inline-flex; align-items: center; gap: 6px; margin-top: 8px;
  font-family: var(--font-display); font-weight: 700; font-size: 11px;
  letter-spacing: 0.02em; color: var(--prog-on, #fff); background: var(--prog-accent, var(--bt-blue));
  border: none; border-radius: 999px; padding: 6px 13px; text-decoration: none; cursor: pointer;
  transition: transform 140ms var(--ease-out), box-shadow 140ms, filter 140ms;
}
.detail-browse .fa-link:hover { transform: translateY(-1px); box-shadow: 0 4px 12px color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 35%, transparent); filter: brightness(0.97); }
.detail-browse .fa-link .fa-ar { font-weight: 900; }

/* inline formative-assessment overlay — activity + live class scoring */
.lib-detail { position: relative; }
.fa-ov { position: absolute; inset: 0; z-index: 20; display: flex; align-items: center; justify-content: center; background: rgba(20,16,30,0.42); }
.fa-ov[hidden] { display: none; }
.fa-ov-card { width: 880px; max-width: 95%; max-height: 94%; background: #fff; border-radius: 18px; box-shadow: 0 24px 60px rgba(20,16,30,0.30); display: flex; flex-direction: column; overflow: hidden; }
.fa-ov-head { display: flex; align-items: center; gap: 12px; padding: 13px 18px; border-bottom: 1px solid var(--border-1); }
.fa-ov-title { font-family: var(--font-display); font-weight: 800; font-size: 15px; color: var(--prog-ink, var(--bt-blue)); flex: 1; }
.fa-ov-live { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-display); font-weight: 700; font-size: 11px; color: var(--fg-2); }
.fa-ov-live b { color: var(--prog-ink, var(--bt-blue)); }
.fa-ov-live .fa-dot { width: 7px; height: 7px; border-radius: 50%; background: #22c55e; animation: fadot 1.6s infinite; }
@keyframes fadot { 0% { box-shadow: 0 0 0 0 rgba(34,197,94,0.45); } 70% { box-shadow: 0 0 0 6px rgba(34,197,94,0); } 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); } }
.fa-ov-x { border: none; background: var(--ink-5, #f1f1f1); width: 28px; height: 28px; border-radius: 50%; cursor: pointer; font-size: 13px; color: var(--fg-2); flex: none; }
.fa-ov-x:hover { background: var(--ink-10, #e4e4e7); }
.fa-ov-split { display: grid; grid-template-columns: 1fr 286px; min-height: 0; flex: 1; }
.fa-ov-activity { display: flex; flex-direction: column; min-height: 0; border-right: 1px solid var(--border-1); }
.fa-ov-stage { flex: 1; overflow: auto; padding: 24px 26px 10px; display: flex; flex-direction: column; align-items: center; text-align: center; }
.fa-ov-cue { font-size: 68px; line-height: 1.05; margin-bottom: 12px; }
.fa-ov-cue.txt { font-family: var(--font-display); font-weight: 800; font-size: 25px; color: var(--ink-900); line-height: 1.2; }
.fa-ov-prompt { font-family: var(--font-display); font-weight: 700; font-size: 15px; color: var(--fg-2); margin-bottom: 16px; }
.fa-ov-opts { display: grid; grid-template-columns: repeat(2, minmax(120px, 1fr)); gap: 10px; width: 100%; max-width: 430px; }
.fa-ov-opt { font-family: var(--font-display); font-weight: 800; font-size: 18px; padding: 13px 12px; border-radius: 12px; cursor: pointer; background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 10%, white); color: var(--prog-ink, var(--bt-blue)); border: 1.5px solid color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 28%, white); transition: background 120ms; }
.fa-ov-opt:hover { background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 20%, white); }
.fa-ov-opt.right { background: var(--status-success-bg, #e6f7ee); color: var(--bt-green); border-color: var(--bt-green); }
.fa-ov-opt.wrong { background: rgba(254,45,35,0.10); color: var(--bt-red); border-color: var(--bt-red); }
.fa-ov-opt.locked { pointer-events: none; }
.fa-ov-fb { margin-top: 14px; min-height: 18px; font-weight: 700; font-size: 14px; }
.fa-ov-fb.good { color: var(--bt-green); }
.fa-ov-fb.bad { color: var(--bt-red); }
.fa-ov-nav { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 18px; border-top: 1px solid var(--border-1); font-family: var(--font-display); font-weight: 700; font-size: 12px; color: var(--fg-2); }
.fa-ov-navb { font-family: var(--font-display); font-weight: 700; font-size: 12px; background: var(--ink-5, #f1f1f1); border: none; border-radius: 999px; padding: 7px 14px; cursor: pointer; color: var(--fg-1); }
.fa-ov-navb:disabled { opacity: 0.4; cursor: default; }
.fa-ov-results { display: flex; flex-direction: column; min-height: 0; background: #FAFAFC; }
.fa-ov-res-head { font-family: var(--font-display); font-weight: 800; font-size: 11px; letter-spacing: 0.04em; text-transform: uppercase; color: var(--fg-3); padding: 13px 16px 8px; }
.fa-ov-table { width: 100%; border-collapse: collapse; font-family: var(--font-display); }
.fa-ov-table th, .fa-ov-table td { text-align: center; padding: 5px 3px; }
.fa-ov-table th.qh, .fa-ov-table td.q { width: 22px; color: var(--fg-3); font-weight: 700; font-size: 11px; }
.fa-ov-table th.sh .av { display: flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 50%; color: #fff; font-weight: 800; font-size: 9px; margin: 0 auto; }
.fa-ov-table td.c.live { background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 8%, white); }
.fa-ov-table th.sh.live { background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 8%, white); }
.fa-ov-table th.ch, .fa-ov-table td.cls { width: 34px; font-weight: 800; font-size: 10px; color: var(--ink-30); }
.fa-ov-table .cg { display: inline-flex; align-items: center; justify-content: center; width: 19px; height: 19px; border-radius: 6px; font-size: 11px; font-weight: 900; }
.fa-ov-table .cg.ok { background: var(--status-success-bg, #e6f7ee); color: var(--bt-green); }
.fa-ov-table .cg.no { background: rgba(254,45,35,0.12); color: var(--bt-red); }
.fa-ov-table .cg.pend { background: transparent; color: var(--ink-30); }
.fa-ov-table .cg.new { animation: cgpop 0.4s cubic-bezier(0.34,1.56,0.64,1); }
@keyframes cgpop { 0% { transform: scale(0.3); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
.fa-ov-table td.cls.good { color: var(--bt-green); }
.fa-ov-table td.cls.mid { color: var(--bt-orange); }
.fa-ov-table td.cls.low { color: var(--bt-red); }
.fa-ov-table tr.reteach td.q { color: var(--bt-red); }
.fa-ov-res-foot { margin-top: auto; padding: 10px 16px 14px; font-size: 10.5px; line-height: 1.4; color: var(--fg-2); }
.fa-ov-res-foot .flag { font-weight: 700; color: var(--bt-orange); }
.fa-ov-res-foot .flag.ok { color: var(--bt-green); }

/* ---- generic "browse" detail view (non-flagship lessons) ---- */
.detail-browse { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.detail-browse[hidden] { display: none; }
.br-scroll { flex: 1; overflow: auto; }

.br-flow {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  padding: 12px 22px; border-bottom: 1px solid var(--border-1);
}
.br-flow .step-chip {
  font-family: var(--font-display); font-weight: 700; font-size: 10px;
  letter-spacing: 0.02em; color: var(--prog-ink, var(--prog-accent, var(--bt-blue)));
  background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 9%, white);
  border: 1px solid color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 22%, white);
  border-radius: 999px; padding: 4px 11px;
}
.br-flow .arr { color: var(--ink-30); font-size: 11px; }

.br-sec-h {
  font-family: var(--font-display); font-weight: 800; font-size: 10px;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--fg-3);
  padding: 16px 22px 8px;
}

/* gradual-release steps reuse .lib-step look but no launch col */
.detail-browse .steps { padding: 4px 22px 4px; }
.detail-browse .lib-step { grid-template-columns: 30px 1fr; gap: 13px; }
.detail-browse .lib-step .num { background: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 14%, white); color: var(--prog-ink, var(--prog-accent, var(--bt-blue))); }

/* materials cards */
.br-mats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; padding: 2px 22px 6px; }
.br-mat {
  display: flex; gap: 11px; align-items: flex-start;
  background: #FAFAFC; border: 1px solid var(--border-1); border-radius: 12px;
  padding: 12px 14px;
}
.br-mat .mi {
  flex: none; width: 30px; height: 30px; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; background: var(--prog-accent, var(--bt-blue));
}
.br-mat .mi svg { width: 16px; height: 16px; }
.br-mat .ml { font-family: var(--font-display); font-weight: 800; font-size: 12px; color: var(--ink-900); }
.br-mat .md { font-size: 10.5px; color: var(--fg-2); margin-top: 2px; line-height: 1.4; }
.br-mat .mtag {
  display: inline-block; margin-top: 6px;
  font-family: var(--font-display); font-weight: 700; font-size: 9px;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--prog-ink, var(--prog-accent, var(--bt-blue)));
}
.br-mat.is-link {
  text-decoration: none; color: inherit; cursor: pointer;
  transition: transform 140ms var(--ease-out), box-shadow 140ms, border-color 140ms, background 140ms;
}
.br-mat.is-link:hover {
  transform: translateY(-2px);
  border-color: color-mix(in oklab, var(--prog-accent, var(--bt-blue)) 45%, white);
  box-shadow: 0 6px 16px rgba(10,10,18,0.08);
  background: #fff;
}
.br-mat .open-ar { color: var(--prog-ink, var(--prog-accent, var(--bt-blue))); font-weight: 900; font-size: 11px; }

/* scaffolds row */
.br-scaff { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 2px 22px 20px; }
.br-scaff .sc {
  background: #fff; border: 1px solid var(--border-1); border-radius: 12px; padding: 11px 13px;
}
.br-scaff .sc .scl {
  font-family: var(--font-display); font-weight: 800; font-size: 9.5px;
  letter-spacing: 0.10em; text-transform: uppercase; color: var(--prog-ink, var(--prog-accent, var(--bt-blue)));
  margin-bottom: 5px;
}
.br-scaff .sc .scb { font-size: 10.5px; line-height: 1.4; color: var(--fg-1); }

/* a small "open full interactive lesson" note shown for the flagship */
.lib-actions .open-flag {
  font-family: var(--font-display); font-weight: 700; font-size: 11px;
  letter-spacing: 0.03em; color: #fff; background: var(--bt-orange);
  border: none; border-radius: 999px; padding: 8px 15px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 7px;
  transition: transform 140ms var(--ease-out), box-shadow 140ms;
}
.lib-actions .open-flag:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(254,102,0,0.28); }
.lib-actions .browse-back {
  font-family: var(--font-display); font-weight: 700; font-size: 11px;
  color: var(--bt-blue); background: var(--bt-blue-10); border: 1px solid var(--bt-blue-20);
  border-radius: 999px; padding: 7px 14px; cursor: pointer;
}