/* Production flow infographic — 2026-09-06
   Goal: make the homepage production process understandable at a glance.
   Keeps the existing Kotobaya C-theme: quiet, structured, mobile-first. */

.v2-flow .flow-section-copy {
  max-width: 720px;
  margin-top: 12px;
  color: var(--color-muted);
  line-height: 1.85;
}

.flow-infographic {
  --flow-node-size: 58px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0;
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
}

.flow-infographic::before {
  content: "";
  position: absolute;
  z-index: 0;
  top: calc(var(--flow-node-size) / 2);
  left: 7%;
  right: 7%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-line-dark), var(--color-blue-accent), var(--color-line-dark));
  opacity: .68;
}

.flow-infographic .flow-step {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: var(--flow-node-size) auto;
  gap: 18px;
  align-content: start;
  padding: 0 8px;
  text-align: center;
}

.flow-step-marker {
  position: relative;
  width: var(--flow-node-size);
  height: var(--flow-node-size);
  margin: 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-line-dark);
  border-radius: 50%;
  background: rgba(255,255,255,.96);
  color: var(--color-blue-accent);
  box-shadow: 0 8px 24px rgba(18,34,56,.08);
}

.flow-step-marker::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid color-mix(in srgb, var(--color-blue-accent) 18%, transparent);
  border-radius: inherit;
}

.flow-step-icon {
  width: 24px;
  height: 24px;
  position: relative;
  z-index: 1;
}

.flow-step-icon svg {
  width: 100%;
  height: 100%;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.flow-step-body {
  min-height: 210px;
  padding: 20px 14px 18px;
  border: 1px solid var(--color-line);
  background: linear-gradient(180deg, rgba(255,255,255,.96), rgba(248,250,251,.88));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
}

.flow-step-no {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .12em;
  color: var(--color-blue-accent);
}

.flow-step-body strong {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  line-height: 1.45;
  color: var(--color-ink);
}

.flow-step-body small {
  color: var(--color-muted);
  font-size: .82rem;
  line-height: 1.72;
}

.flow-step-output {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--color-blue-light);
  color: var(--color-ink-soft);
  font-size: .7rem;
  line-height: 1.35;
}

.flow-infographic .flow-step:nth-child(4) .flow-step-marker,
.flow-infographic .flow-step:nth-child(6) .flow-step-marker {
  border-color: color-mix(in srgb, var(--color-blue-accent) 55%, var(--color-line));
}

.flow-infographic-note {
  margin-top: 22px;
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-left: 2px solid var(--color-blue-accent);
  background: var(--color-blue-light);
  color: var(--color-ink-soft);
  line-height: 1.75;
}

.flow-infographic-note svg {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  fill: none;
  stroke: var(--color-blue-accent);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (max-width: 1100px) {
  .flow-infographic {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .flow-infographic::before { display: none; }
  .flow-infographic .flow-step { padding: 0; }
  .flow-step-body { min-height: 190px; }
  .flow-step-marker::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 100%;
    width: 18px;
    height: 1px;
    background: var(--color-line-dark);
  }
  .flow-infographic .flow-step:nth-child(3n) .flow-step-marker::before { display: none; }
}

@media (max-width: 700px) {
  .v2-flow .section-intro.compact { margin-bottom: 24px; }
  .v2-flow .flow-section-copy { font-size: .94rem; }

  .flow-infographic {
    --flow-node-size: 50px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
    margin-top: 28px;
  }

  .flow-infographic::before {
    display: block;
    top: 22px;
    bottom: 22px;
    left: calc(var(--flow-node-size) / 2);
    right: auto;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--color-line-dark), var(--color-blue-accent), var(--color-line-dark));
  }

  .flow-infographic .flow-step {
    grid-template-columns: var(--flow-node-size) minmax(0, 1fr);
    grid-template-rows: auto;
    gap: 14px;
    align-items: start;
    padding: 0 0 18px;
    text-align: left;
  }

  .flow-infographic .flow-step:last-child { padding-bottom: 0; }

  .flow-step-marker {
    grid-column: 1;
    margin: 0;
    box-shadow: 0 6px 18px rgba(18,34,56,.08);
  }

  .flow-step-marker::before { display: none !important; }

  .flow-step-icon { width: 21px; height: 21px; }

  .flow-step-body {
    grid-column: 2;
    min-height: 0;
    padding: 16px 16px 15px;
    align-items: flex-start;
    gap: 6px;
  }

  .flow-step-body strong { font-size: 1.08rem; }
  .flow-step-body small { font-size: .82rem; }
  .flow-step-output { margin-top: 7px; justify-content: flex-start; }

  .flow-infographic-note {
    margin-top: 20px;
    align-items: flex-start;
    font-size: .86rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .flow-infographic .flow-step { transition: none !important; }
}