/* ==========================================================================
   IdeaSweetSpot — RE-SCORE TIMELINE styles  ·  spring-zen
   Circle-delta sparklines + the what-changed line + the Threads nudge card.
   Palette: Blossom / Leaf / Sky / Butter (decorative) on paper, ink for text.
   ========================================================================== */

.iss-tl {
  background: var(--iss-surface, #FFFDF7);
  border: 1px solid var(--iss-n-200, #E7E0D2);
  border-radius: 18px;
  padding: 0.95rem 1.05rem 0.85rem;
  box-shadow: var(--iss-inset-hi, inset 0 1px 0 rgba(255, 255, 255, 0.8));
}
.iss-tl__head {
  margin: 0 0 0.15rem;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--iss-ink, #23262F);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}
.iss-tl__count {
  font-weight: 500;
  font-size: 0.78rem;
  color: var(--iss-n-500, #6E6A5E);
}
.iss-tl__changed {
  margin: 0 0 0.65rem;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--iss-n-700, #3C3A33);
}
.iss-tl__rows { display: grid; gap: 0.3rem; }
.iss-tl__row {
  display: grid;
  grid-template-columns: 12px 5.6rem 1fr auto;
  align-items: center;
  gap: 0.5rem;
}
.iss-tl__dot {
  width: 11px; height: 11px; border-radius: 50%;
  border: 1.5px solid; display: inline-block;
}
.iss-tl__name { font-size: 0.82rem; font-weight: 600; color: var(--iss-ink, #23262F); }
.iss-tl__spark { width: 100%; max-width: 170px; height: 34px; display: block; }
.iss-tl__floor { stroke: var(--iss-n-200, #E7E0D2); stroke-width: 1; }
.iss-tl__delta {
  font-size: 0.78rem; font-weight: 700; white-space: nowrap;
  padding: 0.1rem 0.5rem; border-radius: 999px;
  border: 1px solid var(--iss-n-200, #E7E0D2);
  color: var(--iss-ink, #23262F); background: var(--iss-n-25, #FFFDF7);
}
.iss-tl__delta--up   { background: var(--iss-accent-soft, #EAF3E4); border-color: var(--iss-accent-line, #D6E3CC); color: var(--iss-accent-ink, #4F6B3E); }
.iss-tl__delta--down { color: var(--iss-n-700, #3C3A33); }   /* a softer read is information, never a red mark */
.iss-tl__delta--held { font-weight: 600; color: var(--iss-n-500, #6E6A5E); }

.iss-tl__ledger {
  list-style: none;
  margin: 0.7rem 0 0; padding: 0.55rem 0 0;
  border-top: 1px dashed var(--iss-n-200, #E7E0D2);
  display: grid; gap: 0.22rem;
  max-height: 9.5rem; overflow-y: auto;
}
.iss-tl__ledger li { font-size: 0.8rem; line-height: 1.45; color: var(--iss-n-700, #3C3A33); }
.iss-tl__ledger b { color: var(--iss-ink, #23262F); font-weight: 700; }
.iss-tl__fine { margin: 0.55rem 0 0; font-size: 0.75rem; line-height: 1.45; color: var(--iss-n-500, #6E6A5E); }

/* mount inside the scorer's live panel */
.iss-tl-mount { margin-top: 0.9rem; }
.iss-tl-mount .iss-tl { text-align: left; }

/* a quiet seed hint before an idea has its second point */
.iss-tl-seedhint {
  margin: 0.9rem 0 0; font-size: 0.78rem; line-height: 1.5;
  color: var(--iss-n-500, #6E6A5E);
  background: var(--iss-n-25, #FFFDF7);
  border: 1px dashed var(--iss-n-200, #E7E0D2);
  border-radius: 14px; padding: 0.55rem 0.75rem; text-align: left;
}

/* ---- Threads: per-thread timeline disclosure ---------------------------- */
.thr-tlrow { margin: 0.35rem 0 0; }
.thr-tlbtn {
  font: inherit; font-size: 0.8rem; font-weight: 600;
  color: var(--iss-accent-ink, #4F6B3E);
  background: none; border: none; cursor: pointer;
  padding: 0.15rem 0.2rem; border-radius: 8px;
  display: inline-flex; align-items: center; gap: 0.35rem;
}
.thr-tlbtn:hover { text-decoration: underline; }
.thr-tlbtn:focus-visible { outline: 3px solid var(--iss-accent-ink, #4F6B3E); outline-offset: 2px; }
.thr-tlbtn .thr-tlbtn__chev { transition: transform 0.2s ease; display: inline-block; }
.thr-tlbtn[aria-expanded="true"] .thr-tlbtn__chev { transform: rotate(90deg); }
.thr-tlpanel { margin: 0.45rem 0 0.2rem; }

/* ---- Threads: the warm untended nudge (one at a time, never a list) ----- */
.thr-nudge {
  background: linear-gradient(180deg, var(--iss-surface, #FFFDF7), var(--iss-n-50, #FAF6EF));
  border: 1px solid var(--iss-n-200, #E7E0D2);
  border-radius: 20px;
  padding: 1rem 1.15rem;
  margin: 0 0 1.1rem;
  box-shadow: var(--iss-shadow-sm, 0 6px 18px -12px rgba(35, 38, 47, 0.25));
}
.thr-nudge__lead { margin: 0 0 0.25rem; font-size: 0.98rem; line-height: 1.55; color: var(--iss-ink, #23262F); }
.thr-nudge__lead b { font-weight: 700; }
.thr-nudge__sub { margin: 0 0 0.7rem; font-size: 0.84rem; line-height: 1.5; color: var(--iss-n-500, #6E6A5E); }
.thr-nudge__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }

@media (max-width: 560px) {
  .iss-tl__row { grid-template-columns: 12px 4.6rem 1fr auto; gap: 0.4rem; }
  .iss-tl__name { font-size: 0.76rem; }
}

@media (prefers-reduced-motion: reduce) {
  .thr-tlbtn .thr-tlbtn__chev { transition: none; }
}