/* Gate 3 — The Design Journey (Room 06) */
.room-journey {
  position: relative;
  background:
    linear-gradient(180deg, #f7f5f1 0%, #faf8f4 40%, #f3efe8 100%);
  color: var(--color-charcoal);
  padding: clamp(4rem, 10vh, 7rem) 0 clamp(2.5rem, 5vh, 3.5rem);
  overflow: hidden;
}

.room-journey__intro {
  padding: 0 var(--content-pad) clamp(1.5rem, 4vh, 2.5rem);
  max-width: 40rem;
}

.room-journey__title {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.1rem, 4.5vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
}

.room-journey__title::after {
  content: "";
  width: clamp(2.25rem, 4.5vw, 4rem);
  height: 1px;
  flex: 0 0 auto;
  background: var(--color-bronze);
}

.room-journey__stage {
  position: relative;
  min-height: min(58svh, 36rem);
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 0 var(--content-pad);
  margin-bottom: clamp(1.5rem, 4vh, 3rem);
}

.room-journey__stage:last-of-type {
  margin-bottom: 0;
}

.room-journey__plane {
  position: relative;
  margin: 0;
  overflow: hidden;
  height: min(48svh, 30rem);
  min-height: min(48svh, 30rem);
  background: #ebe4da;
}

.room-journey__plane img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  filter: brightness(1.02) contrast(1.05) saturate(0.88);
}

.room-journey__stage--drawing .room-journey__plane img {
  object-fit: cover;
  object-position: center;
  background: #faf8f4;
  filter: contrast(1.1) brightness(1.02);
}

.room-journey__notation {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.15rem;
  padding: 0.95rem 1.15rem 1.05rem 1.2rem;
  max-width: 36rem;
  border-left: 2px solid var(--color-bronze);
  background: linear-gradient(90deg, rgba(155, 123, 91, 0.1), transparent 86%);
}

.room-journey__notation-head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem 1.15rem;
}

.room-journey__label {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.55rem, 2.8vw, 2.15rem);
  line-height: 1.05;
  letter-spacing: -0.015em;
  text-transform: none;
  color: var(--color-charcoal);
}

.room-journey__index {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-walnut);
}

.room-journey__desc {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(0.95rem, 1.15vw, 1.08rem);
  line-height: 1.4;
  color: rgba(39, 33, 29, 0.78);
  max-width: none;
  white-space: nowrap;
}

.room-journey__rail {
  position: sticky;
  top: 1.25rem;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.35rem;
  padding: 0.5rem var(--content-pad) 1rem;
}

.room-journey__rail-link {
  font-family: var(--font-sans);
  font-size: clamp(0.78rem, 1.05vw, 0.92rem);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(39, 33, 29, 0.32);
  cursor: pointer;
  transition: color 0.3s var(--ease-out);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.room-journey__rail-link:hover,
.room-journey__rail-link:focus-visible {
  color: rgba(39, 33, 29, 0.88);
}

.room-journey__rail-link:focus-visible {
  outline: 2px solid var(--color-bronze);
  outline-offset: 4px;
}

.room-journey__rail-link.is-active {
  color: rgba(39, 33, 29, 0.88);
}

@media (max-width: 768px) {
  .room-journey__stage {
    min-height: auto;
    margin-bottom: 2.5rem;
  }

  .room-journey__plane {
    height: min(42svh, 22rem);
    min-height: min(42svh, 22rem);
  }

  .room-journey__rail {
    position: relative;
    top: auto;
    gap: 0.55rem 1rem;
    padding-bottom: 1.25rem;
  }

  .room-journey__rail-link {
    font-size: 0.72rem;
    min-height: 40px;
  }

  .room-journey__index {
    display: none;
  }

  .room-journey__title::after {
    display: none;
  }

  .room-journey__desc {
    white-space: nowrap;
    font-size: clamp(0.82rem, 3.4vw, 0.95rem);
  }
}

.room-journey__placement-note {
  margin: 0.75rem 0 0;
  max-width: 36rem;
  font-family: var(--font-sans, "Helvetica Neue", sans-serif);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #7a6552;
}