/* components.css — buttons, the predictor, distribution bars, steps,
   concept cards, timeline, the interactive try-panel, limits */

/* ---- buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .8rem 1.4rem; border-radius: var(--radius-sm);
  font-size: .88rem; font-weight: 500; letter-spacing: .01em;
  border: 1px solid transparent; transition: transform .14s, box-shadow .2s, background .2s, border-color .2s;
}
.btn-primary { background: var(--plasma); color: #120a18; font-weight: 600; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -10px rgba(255,77,141,.5); }
.btn-ghost { border-color: var(--border-lit); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent-lit); background: var(--surface); transform: translateY(-2px); }

/* ---- predictor (hero signature) ---- */
.predictor {
  background: linear-gradient(180deg, var(--surface), var(--ink-2));
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); overflow: hidden;
  font-family: var(--font-mono);
}
.predictor-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: .7rem 1rem; border-bottom: 1px solid var(--border);
  background: var(--ink-2);
}
.predictor-label { font-size: .78rem; color: var(--muted); letter-spacing: .02em; }
.predictor-status {
  font-size: .7rem; color: var(--accent-lit); letter-spacing: .08em; text-transform: uppercase;
  display: inline-flex; align-items: center; gap: .4rem;
}
.predictor-status::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-lit); animation: pulse 1.4s infinite;
}
.predictor-stream {
  padding: 1.5rem 1.25rem; font-size: 1.02rem; line-height: 1.7;
  min-height: 8.5rem; color: var(--text);
}
.tok { transition: background .3s, color .3s; padding: 0 1px; border-radius: 3px; }
.tok.fresh { background: var(--plasma); color: #120a18; }
.caret {
  display: inline-block; width: .6ch; color: var(--accent-lit);
  animation: blink 1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.predictor-dist { padding: 1rem 1.25rem 1.4rem; border-top: 1px solid var(--border); background: var(--ink-2); }
.dist-caption {
  font-size: .66rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--faint); margin-bottom: .8rem;
}

/* ---- distribution rows (shared by predictor + try-panel) ---- */
.dist-rows { display: flex; flex-direction: column; gap: .5rem; }
.dist-row { display: grid; grid-template-columns: 7.5rem 1fr 3rem; align-items: center; gap: .7rem; font-family: var(--font-mono); }
.dist-tok { font-size: .82rem; color: var(--text-dim); text-align: right; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dist-row.is-pick .dist-tok { color: var(--text); }
.dist-track { height: 12px; background: var(--surface-2); border-radius: 20px; overflow: hidden; }
.dist-fill {
  height: 100%; width: 0; border-radius: 20px; background: var(--plasma);
  background-size: 22rem 100%;
  transition: width .55s cubic-bezier(.2,.8,.2,1), opacity .3s;
  opacity: .55;
}
.dist-row.is-pick .dist-fill { opacity: 1; box-shadow: 0 0 16px -2px rgba(255,77,141,.6); }
.dist-pct { font-size: .76rem; color: var(--muted); text-align: right; }
.dist-row.is-pick .dist-pct { color: var(--accent-lit); }
@media (max-width: 480px) { .dist-row { grid-template-columns: 5rem 1fr 2.6rem; } }

/* ---- steps (how it thinks) ---- */
.steps {
  list-style: none; padding: 0;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem;
  counter-reset: step;
}
@media (max-width: 880px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.step {
  position: relative; padding: 1.4rem 1.3rem 1.5rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  transition: border-color .2s, transform .2s;
}
.step:hover { border-color: var(--border-lit); transform: translateY(-3px); }
.step-num {
  display: inline-block; font-family: var(--font-mono); font-size: .72rem;
  letter-spacing: .06em; color: var(--accent-lit);
  padding: .25rem .55rem; border: 1px solid var(--border-lit); border-radius: 6px;
  margin-bottom: 1rem;
}
.step h3 { font-size: 1.15rem; margin-bottom: .55rem; }
.step p { font-size: .96rem; color: var(--text-dim); line-height: 1.5; }
.step::before {
  counter-increment: step; content: counter(step);
  position: absolute; top: 1.2rem; right: 1.3rem;
  font-family: var(--font-mono); font-size: 2.4rem; font-weight: 600;
  color: var(--border); line-height: 1;
}

/* ---- concept cards ---- */
.concept-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem;
}
.concept {
  padding: 1.3rem 1.3rem 1.4rem; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  transition: transform .2s, border-color .2s, background .2s;
}
.concept:hover { transform: translateY(-3px); border-color: var(--border-lit); background: var(--surface-2); }
.concept-term {
  display: flex; align-items: baseline; gap: .6rem; margin-bottom: .7rem;
}
.concept-term h3 { font-size: 1.1rem; }
.concept-aka { font-family: var(--font-mono); font-size: .7rem; color: var(--faint); }
.concept p { font-size: .95rem; color: var(--text-dim); line-height: 1.5; }

/* ---- timeline ---- */
.timeline { list-style: none; padding: 0; position: relative; }
.timeline::before {
  content: ""; position: absolute; left: 6.5rem; top: .4rem; bottom: .4rem; width: 2px;
  background: linear-gradient(var(--p0), var(--p3), transparent);
}
@media (max-width: 620px) { .timeline::before { left: 0; } }
.tl-item {
  position: relative; display: grid; grid-template-columns: 6.5rem 1fr; gap: 1.6rem;
  padding: 0 0 2.2rem 0;
}
@media (max-width: 620px) { .tl-item { grid-template-columns: 1fr; padding-left: 1.4rem; } }
.tl-year {
  font-family: var(--font-mono); font-weight: 600; font-size: 1rem; color: var(--accent-lit);
  text-align: right; padding-top: .05rem;
}
@media (max-width: 620px) { .tl-year { text-align: left; } }
.tl-body { position: relative; padding-left: 1.7rem; }
.tl-body::before {
  content: ""; position: absolute; left: -1.7rem; top: .45rem;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--ink); border: 2px solid var(--accent-lit);
  box-shadow: 0 0 0 4px var(--ink);
}
@media (max-width: 620px) { .timeline { padding-left: .2rem; } .tl-body::before { left: -1.4rem; } }
.tl-body h3 { font-size: 1.15rem; margin-bottom: .4rem; }
.tl-body p { font-size: .96rem; color: var(--text-dim); line-height: 1.5; max-width: 56ch; }

/* ---- try panel ---- */
.try-panel {
  display: grid; grid-template-columns: 13rem 1fr; gap: 1.4rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1.4rem; box-shadow: var(--shadow);
}
@media (max-width: 760px) { .try-panel { grid-template-columns: 1fr; } }
.try-prompts { display: flex; flex-direction: column; gap: .5rem; }
@media (max-width: 760px) { .try-prompts { flex-direction: row; flex-wrap: wrap; } }
.prompt-chip {
  text-align: left; padding: .7rem .9rem; border-radius: var(--radius-sm);
  background: var(--ink-2); border: 1px solid var(--border); color: var(--text-dim);
  font-family: var(--font-mono); font-size: .8rem; line-height: 1.35; transition: .18s;
}
.prompt-chip:hover { border-color: var(--border-lit); color: var(--text); }
.prompt-chip.active { border-color: var(--accent-lit); color: var(--text); background: var(--surface-2); box-shadow: inset 3px 0 0 var(--accent-lit); }

.try-stage { display: flex; flex-direction: column; gap: 1.1rem; }
.try-context {
  font-family: var(--font-mono); font-size: 1.05rem; line-height: 1.6;
  background: var(--ink-2); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 1rem 1.1rem; min-height: 3.4rem;
}
.try-context .picked { background: var(--plasma); color: #120a18; border-radius: 3px; padding: 0 2px; }
.try-cursor { color: var(--accent-lit); animation: blink 1s steps(2) infinite; }
.try-step { align-self: flex-start; }
.try-step:disabled { opacity: .4; cursor: not-allowed; transform: none; box-shadow: none; }

/* ---- limits ---- */
.limits-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
@media (max-width: 820px) { .limits-grid { grid-template-columns: 1fr; } }
.limit { padding: 1.4rem 1.3rem; border-left: 2px solid var(--border-lit); }
.limit h3 { font-size: 1.12rem; margin-bottom: .55rem; }
.limit p { color: var(--text-dim); font-size: .96rem; line-height: 1.5; }

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }