/* ============================================================
 * farpa DS · component · timeline · v1.0.0 · 2026-05-10
 * ------------------------------------------------------------
 * Timeline horizontal · uso primário: pipeline DSBVLR (D→S→B→V→L→R).
 * Letter-mark grande Fraunces blood-700 + filete blood-700 conectando.
 * Mobile: vira lista vertical com filete vertical à esquerda.
 *
 * Padrão:
 *   <ol class="farpa-timeline">
 *     <li class="farpa-timeline__step" data-letter="D">
 *       <h3 class="farpa-timeline__title">Discover</h3>
 *       <p class="farpa-timeline__caption">contínuo · OST + interview semanal</p>
 *     </li>
 *     ...
 *   </ol>
 *
 * data-letter attr → renderiza letra grande via ::before.
 * ============================================================ */

.farpa-timeline {
  list-style: none;
  margin: 0;
  padding: var(--sp-5) 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--sp-4);
  position: relative;
}

/* Filete horizontal conectando os steps · linha de centro das letras (~half height) */
.farpa-timeline::before {
  content: "";
  position: absolute;
  top: calc(var(--sp-5) + 2.5rem);  /* ~ centro vertical da letter-mark */
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-rule);
  z-index: 0;
}

.farpa-timeline__step {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  align-items: flex-start;
  position: relative;
  z-index: 1;
}

/* Letter-mark via data-letter · Fraunces opsz 144 · blood-700 */
.farpa-timeline__step[data-letter]::before {
  content: attr(data-letter);
  font-family: var(--font-display);
  font-variation-settings: "opsz" 144, "wght" 600;
  font-weight: var(--fw-display-strong);
  font-size: 5rem;
  line-height: 1;
  color: var(--accent);
  background: var(--bg);            /* mascara o filete atrás da letra */
  padding: 0 var(--sp-2);
  margin-left: calc(-1 * var(--sp-2));
}

.farpa-timeline__title {
  font-family: var(--font-sans);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  margin: 0;
  color: var(--fg);
}

.farpa-timeline__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  margin: 0;
  max-width: 18ch;
}

/* Mobile · stack vertical com filete vertical à esquerda */
@media (max-width: 720px) {
  .farpa-timeline {
    grid-template-columns: 1fr;
    gap: var(--sp-5);
    padding-left: var(--sp-6);
  }
  .farpa-timeline::before {
    top: 0;
    bottom: 0;
    left: var(--sp-3);
    right: auto;
    width: 2px;
    height: auto;
  }
  .farpa-timeline__step {
    padding-left: var(--sp-4);
  }
  .farpa-timeline__step[data-letter]::before {
    font-size: var(--fs-3xl);
    padding: 0 var(--sp-2);
    margin-left: calc(-1 * var(--sp-6));
  }
  .farpa-timeline__caption {
    max-width: none;
  }
}

/* HC · filete preto 3px · letras black (já vem do theme via --accent-rule e --accent) */
[data-theme="hc"] .farpa-timeline::before {
  height: 3px;
}