/* ─────────────────────────────────────────
   LAB PAGE
───────────────────────────────────────── */

.lab-body {
  background:
    radial-gradient(circle at 20% 15%, rgba(127,183,190,0.05), transparent 25%),
    radial-gradient(circle at 80% 85%, rgba(211,226,152,0.04), transparent 20%),
    linear-gradient(180deg, #090a0f 0%, #0d0f16 50%, #0a0c12 100%);
}

/* ── ACT 1: INTRO ─────────────────────── */
.lab-act-intro {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

#lab-fluid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.lab-act-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
  z-index: 1;
  pointer-events: none;
}

.lab-act-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.lab-whisper {
  font-size: clamp(0.8rem, 1.2vw, 1rem);
  font-style: italic;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: clamp(12px, 2vh, 24px);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
}

.lab-big-title {
  font-family: "Chango", var(--display);
  font-size: clamp(5rem, 18vw, 16rem);
  font-weight: 400;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: #D3F3EE;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0;
  transform: translateY(30px) scale(0.95);
  transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s,
              transform 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s;
}

.lab-accent {
  color: var(--accent);
  font-style: italic;
}

.lab-tagline {
  margin-top: clamp(16px, 3vh, 32px);
  font-size: clamp(0.85rem, 1.3vw, 1.1rem);
  color: var(--muted);
  max-width: 36ch;
  margin-left: auto;
  margin-right: auto;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease 0.6s, transform 0.8s ease 0.6s;
}

.lab-body.page-ready [data-lab-fade] {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* ── MARQUEE ──────────────────────────── */
.lab-marquee {
  padding: 18px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.lab-marquee-track {
  display: flex;
  gap: 28px;
  align-items: center;
  white-space: nowrap;
  animation: labMarquee 18s linear infinite;
  font-family: "Clash Display", var(--display);
  font-size: clamp(1rem, 1.8vw, 1.5rem);
  font-weight: 600;
  color: var(--muted);
  letter-spacing: -0.01em;
  text-transform: lowercase;
}

.lab-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

@keyframes labMarquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ── ACT 2: EXHIBITS (scroll-driven) ──── */
.lab-exhibits {
  height: 500vh;
  position: relative;
}

.lab-exhibits-sticky {
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lab-exhibit {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(24px, 5vw, 80px);
  text-align: center;
  opacity: 0;
  pointer-events: none;
}

.lab-exhibit.is-active {
  opacity: 1;
  pointer-events: auto;
}

.lab-exhibit-num {
  font-size: clamp(0.7rem, 1vw, 0.85rem);
  letter-spacing: 0.25em;
  color: var(--accent);
  margin-bottom: clamp(12px, 2vh, 24px);
  font-weight: 600;
}

.lab-exhibit h2 {
  font-family: "Chango", var(--display);
  font-size: clamp(2.5rem, 7vw, 7rem);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: #D3F3EE;
  margin: 0 0 clamp(16px, 3vh, 32px);
  word-spacing: 0.1em;
}

.lab-exhibit p {
  font-size: clamp(0.9rem, 1.3vw, 1.1rem);
  color: var(--muted);
  max-width: 48ch;
  line-height: 1.65;
  margin: 0 auto;
}

.lab-exhibit-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: clamp(20px, 3vh, 36px);
}

.lab-exhibit-tags span {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--soft);
  transition: border-color 0.3s ease, color 0.3s ease;
}

.lab-exhibit.is-active .lab-exhibit-tags span {
  border-color: rgba(127, 183, 190, 0.2);
  color: var(--tint);
}

/* Progress indicator dots */
.lab-progress {
  position: fixed;
  right: clamp(16px, 3vw, 40px);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 50;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.lab-progress.is-visible {
  opacity: 1;
}

.lab-progress-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--soft);
  transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.lab-progress-dot.is-active {
  background: var(--accent);
  transform: scale(1.4);
  box-shadow: 0 0 12px rgba(127, 183, 190, 0.5);
}

/* ── ACT 3: FAREWELL ──────────────────── */
.lab-farewell {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
}

.lab-farewell-content {
  text-align: center;
}

.lab-farewell-text {
  font-family: "Clash Display", var(--display);
  font-size: clamp(1.8rem, 4vw, 3.5rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
  max-width: 16ch;
  margin: 0 auto clamp(24px, 4vh, 48px);
  word-spacing: 0.1em;
}

.lab-farewell-text .typewriter-char {
  display: inline-block;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.lab-farewell-text .typewriter-char.is-typed {
  opacity: 1;
  transform: translateY(0);
}

.lab-farewell-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.lab-farewell-cta.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── RESPONSIVE ───────────────────────── */
@media (max-width: 900px) {
  .lab-exhibits { height: auto; }
  .lab-exhibits-sticky {
    position: relative;
    top: auto;
    height: auto;
    flex-direction: column;
    gap: 0;
  }
  .lab-exhibit {
    position: relative;
    opacity: 1;
    pointer-events: auto;
    padding: clamp(48px, 8vh, 80px) 24px;
    border-bottom: 1px solid var(--line);
  }
  .lab-exhibit.is-active .lab-exhibit-tags span,
  .lab-exhibit .lab-exhibit-tags span {
    border-color: rgba(127, 183, 190, 0.2);
    color: var(--tint);
  }
  .lab-progress { display: none; }
}

@media (max-width: 600px) {
  .lab-big-title { align-items: flex-start; }
  .lab-act-content { text-align: left; }
  .lab-tagline { margin-left: 0; }
  .lab-exhibit { text-align: left; }
  .lab-exhibit-tags { justify-content: flex-start; }
  .lab-farewell-text { text-align: left; max-width: none; }
  .lab-farewell-cta { justify-content: flex-start; }
}