/* ============================================
   CHAPTER PAGES — SHARED STYLES
   World of Futuring · 2026
   ============================================ */

:root {
  --ink: #000000;
  --paper: #ffffff;
  --gray: #9d9d9d;
  --muted: #6a6a6a;
  --serif: 'Special Elite', 'Courier Prime', Georgia, serif;
  --max: 1400px;
  --gutter: clamp(1.5rem, 5vw, 5rem);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
  letter-spacing: 0.01em;
}

/* ============================================
   AUDIO TOGGLE
   ============================================ */
.audio-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 48px;
  height: 48px;
  border-radius: 999px;
  border: 1px solid var(--ink);
  background: var(--paper);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px rgba(0,0,0,0.12);
}
.audio-toggle:hover { transform: scale(1.05); }
.audio-toggle svg { width: 20px; height: 20px; }
.audio-toggle.muted .sound-waves { display: none; }

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.75rem var(--gutter);
  display: flex;
  justify-content: space-between;
  align-items: center;
  mix-blend-mode: difference;
  opacity: 0;
  animation: fadeIn 2s ease 1s forwards;
}
.nav-brand {
  font-family: var(--serif);
  font-size: 1.05rem;
  letter-spacing: 0.12em;
  color: var(--paper);
  text-decoration: none;
}
.nav-links { display: flex; gap: 2rem; list-style: none; }
.nav-links a {
  font-family: var(--serif);
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  color: var(--paper);
  text-decoration: none;
  transition: opacity 0.3s;
}
.nav-links a:hover { opacity: 0.6; }

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* ============================================
   SHARED COLOR SECTIONS
   ============================================ */
.black { background: var(--ink); color: var(--paper); }
.white { background: var(--paper); color: var(--ink); }

.tm { font-size: 0.55em; vertical-align: super; margin-left: 0.1em; }

/* ============================================
   SCENE 1: CHAPTER TITLE CARD
   ============================================ */
.chapter-title {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem var(--gutter) 4rem;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.chapter-title-inner {
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
}

.chapter-roman {
  font-family: var(--serif);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  letter-spacing: 0.4em;
  color: var(--paper);
  opacity: 0.7;
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeUp 1.8s cubic-bezier(0.2, 0.65, 0.3, 1) 0.4s forwards;
}

.chapter-name {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(3rem, 11vw, 10rem);
  line-height: 0.95;
  letter-spacing: -0.005em;
  color: var(--paper);
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeUp 2.2s cubic-bezier(0.2, 0.65, 0.3, 1) 0.7s forwards;
}

.chapter-subtitle {
  font-family: var(--serif);
  font-size: clamp(0.9rem, 1.2vw, 1.1rem);
  letter-spacing: 0.32em;
  color: var(--paper);
  opacity: 0.8;
  margin-bottom: 4rem;
  opacity: 0;
  animation: fadeUp 1.8s cubic-bezier(0.2, 0.65, 0.3, 1) 1.2s forwards;
  font-style: italic;
}

.breath {
  display: block;
  width: 1px;
  height: 90px;
  background: var(--paper);
  margin: 2rem auto;
  opacity: 0;
  animation: fadeIn 2s ease 1.8s forwards;
}

.breath-h {
  display: block;
  width: 60px;
  height: 1px;
  background: var(--paper);
  margin: 2.5rem 0;
  opacity: 0.5;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); filter: blur(6px); }
  to { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.scroll-cue {
  position: absolute;
  bottom: 3rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 4;
  font-family: var(--serif);
  font-size: 0.75rem;
  letter-spacing: 0.32em;
  color: var(--paper);
  opacity: 0;
  animation: fadeIn 1.5s ease 2.5s forwards, bob 2.5s ease-in-out 2.5s infinite;
}
@keyframes bob {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}
.scroll-cue::after {
  content: '';
  display: block;
  width: 1px;
  height: 40px;
  background: var(--paper);
  margin: 1rem auto 0;
  opacity: 0.7;
}

/* ============================================
   SCENE 2: THE VERSE
   ============================================ */
.chapter-verse {
  padding: 8rem var(--gutter) 10rem;
  background: var(--ink);
  color: var(--paper);
}
.verse-inner {
  max-width: 780px;
  margin: 0 auto;
  padding-left: clamp(0rem, 6vw, 4rem);
}
.verse-stanza {
  font-family: var(--serif);
  font-size: clamp(1.05rem, 1.5vw, 1.3rem);
  line-height: 1.95;
  letter-spacing: 0.02em;
  color: var(--paper);
  margin-bottom: 0;
}

/* ============================================
   WAVE DIVIDERS
   ============================================ */
.wave-down,
.wave-up {
  position: relative;
  height: 100px;
  overflow: hidden;
}
.wave-down { background: var(--ink); }
.wave-up { background: var(--paper); }
.wave-down svg,
.wave-up svg {
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.wave-down svg { bottom: -1px; }
.wave-up svg { top: -1px; }

/* ============================================
   SCENE 3: THE REVEAL
   ============================================ */
.chapter-reveal {
  padding: 10rem var(--gutter);
  position: relative;
  overflow: hidden;
}

.reveal-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 7vw, 6rem);
  align-items: center;
}

.reveal-image-wrap { position: relative; }
.reveal-image {
  width: 100%;
  height: auto;
  display: block;
  max-width: 600px;
  margin: 0 auto;
}

.reveal-content { position: relative; }

.reveal-eyebrow {
  font-family: var(--serif);
  font-size: 0.85rem;
  letter-spacing: 0.32em;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.reveal-content h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 5vw, 4.2rem);
  line-height: 1.1;
  margin-bottom: 2.5rem;
  color: var(--ink);
}

.reveal-content p {
  font-family: var(--serif);
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  line-height: 1.85;
  letter-spacing: 0.015em;
  margin-bottom: 1.75rem;
  color: var(--ink);
}

.reveal-content p em {
  font-style: italic;
  color: var(--ink);
}

.reveal-content strong {
  font-weight: 700;
  letter-spacing: 0.01em;
}

/* ============================================
   SCENE 4: TESTIMONIAL
   ============================================ */
.chapter-testimonial {
  padding: 8rem var(--gutter) 10rem;
  text-align: center;
  background: var(--paper);
  position: relative;
}

.testimonial-inner {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
}

.testimonial-mark {
  font-family: var(--serif);
  font-size: clamp(8rem, 16vw, 14rem);
  line-height: 0.7;
  color: var(--ink);
  opacity: 0.08;
  position: absolute;
  top: -3rem;
  left: 50%;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
}

.chapter-testimonial blockquote {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3.5vw, 2.8rem);
  line-height: 1.4;
  font-style: italic;
  color: var(--ink);
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.testimonial-attr {
  font-family: var(--serif);
  font-size: 0.9rem;
  letter-spacing: 0.28em;
  color: var(--muted);
  position: relative;
  z-index: 1;
}

/* ============================================
   SCENE 5: NEXT CHAPTER BANNER
   ============================================ */
.next-chapter {
  background: var(--gray);
  padding: 5rem var(--gutter);
  text-align: center;
  color: var(--paper);
  text-decoration: none;
  display: block;
  transition: background 0.4s ease;
  position: relative;
  overflow: hidden;
}
.next-chapter:hover { background: #7d7d7d; }

.next-chapter-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.next-chapter-label {
  font-family: var(--serif);
  font-size: 0.85rem;
  letter-spacing: 0.32em;
  margin-bottom: 1rem;
  opacity: 0.85;
}

.next-chapter-roman {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  opacity: 0.9;
}

.next-chapter-title {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.1;
  transition: transform 0.4s ease;
}
.next-chapter:hover .next-chapter-title {
  transform: translateX(8px);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
  background: var(--paper);
  padding: 5rem var(--gutter) 6rem;
  text-align: center;
  border-top: 1px solid var(--ink);
}
.footer-quote {
  font-family: var(--serif);
  font-size: 1rem;
  letter-spacing: 0.05em;
  font-style: italic;
  margin-bottom: 0.5rem;
}
.footer-attr {
  font-family: var(--serif);
  font-size: 0.82rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-bottom: 3rem;
}
.footer-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}
.footer-meta {
  font-family: var(--serif);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  text-transform: uppercase;
}

/* ============================================
   PILL BUTTONS
   ============================================ */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--serif);
  font-size: 0.9rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  padding: 1rem 2.2rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.35s ease;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
}
.pill:hover { background: var(--paper); color: var(--ink); }
.pill svg { width: 18px; height: 18px; }

/* ============================================
   SCROLL REVEAL
   ============================================ */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 1.4s cubic-bezier(0.2, 0.65, 0.3, 1),
              transform 1.4s cubic-bezier(0.2, 0.65, 0.3, 1);
  will-change: opacity, transform;
}
.reveal-on-scroll.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 880px) {
  .nav-links { display: none; }
  .reveal-grid { grid-template-columns: 1fr; gap: 3rem; }
  .reveal-image { max-width: 460px; }
}
@media (max-width: 540px) {
  .footer-actions { flex-direction: column; align-items: stretch; }
  .pill { justify-content: center; }
  .audio-toggle { bottom: 1.25rem; right: 1.25rem; }
}