/* ─────────────────────────────────────────
   CĀO EDITORIAL — Flagship Store Case Study
   White-ground luxury architecture editorial.
   All animation initial states set here;
   GSAP (cao-editorial.js) drives the reveals.
───────────────────────────────────────── */

/* ── TOKENS ── */
:root {
  --ed-black:   #0a0a0a;
  --ed-white:   #ffffff;
  --ed-off:     #f5f4f2;
  --ed-dim:     rgba(10,10,10,0.45);
  --ed-faint:   rgba(10,10,10,0.12);
  --ed-serif:   'Canela', 'Georgia', serif;
  --ed-sans:    'Suisse Intl', 'Helvetica Neue', Arial, sans-serif;
  --ed-pad-x:   clamp(2rem, 6vw, 7rem);
  --ed-pad-y:   clamp(5rem, 10vh, 9rem);
}

/* ── ROOT ── */
.cao-editorial-root {
  background: var(--ed-white);
  color: var(--ed-black);
  overflow-x: hidden;
}

/* ══════════════════════════════════════
   CHAPTER 1 — HERO
══════════════════════════════════════ */
.cao-ed__hero {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  background: var(--ed-black);
}

.cao-ed__hero-img-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
}
.cao-ed__hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
  transform: scale(1.05);
  transform-origin: center center;
  will-change: transform;
}

/* Nav */
.cao-ed__nav {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  justify-content: center;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding: 2rem var(--ed-pad-x);
  opacity: 0;
  transform: translateY(-8px);
}
.cao-ed__nav-link {
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color 0.3s ease;
}
.cao-ed__nav-link:hover { color: rgba(255,255,255,0.95); }

/* Hero lede */
.cao-ed__hero-lede {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 20;
  padding: 0 var(--ed-pad-x) clamp(3rem, 7vh, 6rem);
  background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, transparent 100%);
}
.cao-ed__hero-title {
  font-family: var(--ed-serif);
  font-size: clamp(72px, 14vw, 200px);
  font-weight: 300;
  line-height: 0.88;
  color: var(--ed-white);
  margin: 0 0 1.6rem;
  letter-spacing: -0.03em;
  opacity: 0;
  transform: translateY(30px);
}
.cao-ed__hero-desc {
  font-family: var(--ed-sans);
  font-size: clamp(10px, 1.1vw, 12px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin: 0 0 1.2rem;
  opacity: 0;
}
.cao-ed__hero-tags {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
  opacity: 0;
}
.cao-ed__tag {
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.38);
}

/* ══════════════════════════════════════
   CHAPTER 2 — STOREFRONT STATEMENT
══════════════════════════════════════ */
.cao-ed__ch2 {
  padding: var(--ed-pad-y) var(--ed-pad-x);
  background: var(--ed-white);
}
.cao-ed__ch2-inner {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: clamp(3rem, 6vw, 7rem);
  align-items: start;
  max-width: 1400px;
}
@media (max-width: 900px) {
  .cao-ed__ch2-inner { grid-template-columns: 1fr; }
}
.cao-ed__ch2-img-wrap {
  overflow: hidden;
  opacity: 0;
  transform: translateY(40px);
}
.cao-ed__ch2-img {
  width: 100%;
  display: block;
  object-fit: cover;
}
.cao-ed__ch2-text {
  padding-top: clamp(2rem, 5vh, 5rem);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  opacity: 0;
  transform: translateY(30px);
}
.cao-ed__chapter-num {
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--ed-dim);
  display: block;
  margin-bottom: 0.5rem;
}
.cao-ed__ch2-copy {
  font-family: var(--ed-sans);
  font-size: clamp(12px, 1.2vw, 14px);
  line-height: 1.75;
  color: var(--ed-black);
  margin: 0;
}
.cao-ed__ch2-note {
  font-family: var(--ed-sans);
  font-size: 10px;
  line-height: 1.65;
  color: var(--ed-dim);
  letter-spacing: 0.04em;
  margin: 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--ed-faint);
}

/* ══════════════════════════════════════
   CHAPTER 3 — INTERIOR FRAGMENTS
══════════════════════════════════════ */
.cao-ed__ch3 {
  padding: 0 0 var(--ed-pad-y);
  background: var(--ed-white);
  overflow: hidden;
}
.cao-ed__ch3-grid {
  display: flex;
  flex-direction: column;
  gap: clamp(4rem, 8vh, 9rem);
}
.cao-ed__ch3-block { position: relative; }
.cao-ed__ch3-block--large-left {
  padding-left: var(--ed-pad-x);
  width: 72%;
}
.cao-ed__ch3-block--detail-right {
  align-self: flex-end;
  padding-right: var(--ed-pad-x);
  width: 55%;
}
@media (max-width: 768px) {
  .cao-ed__ch3-block--large-left,
  .cao-ed__ch3-block--detail-right {
    width: 90%;
    padding-left: var(--ed-pad-x);
    padding-right: var(--ed-pad-x);
    align-self: auto;
  }
}
.cao-ed__ch3-float-caption {
  padding-left: calc(var(--ed-pad-x) + 1rem);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 320px;
  opacity: 0;
  transform: translateY(20px);
}
.cao-ed__float-text {
  font-family: var(--ed-sans);
  font-size: 10px;
  line-height: 1.7;
  color: var(--ed-dim);
  letter-spacing: 0.03em;
}
.cao-ed__ch3-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  padding: 0 var(--ed-pad-x);
}
@media (max-width: 600px) {
  .cao-ed__ch3-pair { grid-template-columns: 1fr; gap: 1rem; }
}

/* Shared image wrapper */
.cao-ed__img-wrap {
  overflow: hidden;
  position: relative;
}
.cao-ed__img {
  width: 100%;
  display: block;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25,0.46,0.45,0.94);
}
.cao-ed__img-wrap:hover .cao-ed__img {
  transform: scale(1.025);
}

/* ── Reserved aspect-ratios for image wrappers ─────────────────────
   Prevents scroll-jank from image-decode-driven scrollHeight growth.
   Without these, <img> tags render at near-zero height until they
   decode, then snap to their natural aspect ratio — every decode
   shifts scrollHeight and ScrollTrigger boundaries below get stale,
   producing a perceived scroll glitch on first scroll-down. Each
   wrapper now reserves space at layout time, regardless of decode.
   Per-chapter ratios chosen for visual variety. */
.cao-ed__ch2-img-wrap { aspect-ratio: 3 / 2; width: 100%; }
.cao-ed__ch2-img-wrap .cao-ed__ch2-img,
.cao-ed__ch2-img-wrap > img { height: 100%; object-fit: cover; }

.cao-ed__ch3-block--large-left .cao-ed__img-wrap { aspect-ratio: 16 / 10; width: 100%; }
.cao-ed__ch3-block--detail-right .cao-ed__img-wrap { aspect-ratio: 3 / 2; width: 100%; }
.cao-ed__ch3-pair .cao-ed__img-wrap { aspect-ratio: 4 / 5; width: 100%; }

.cao-ed__img-wrap[style*="aspect-ratio"] > .cao-ed__img,
.cao-ed__ch3-block--large-left .cao-ed__img-wrap > .cao-ed__img,
.cao-ed__ch3-block--detail-right .cao-ed__img-wrap > .cao-ed__img,
.cao-ed__ch3-pair .cao-ed__img-wrap > .cao-ed__img { height: 100%; }

.cao-ed__strip-caption {
  display: block;
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ed-dim);
  margin-top: 0.6rem;
}

/* ══════════════════════════════════════
   STATEMENT PULL QUOTE
══════════════════════════════════════ */
.cao-ed__statement {
  padding: clamp(6rem, 14vh, 14rem) var(--ed-pad-x);
  background: var(--ed-white);
}
.cao-ed__statement-inner {
  max-width: 900px;
  opacity: 0;
  transform: translateY(30px);
}
.cao-ed__statement-text {
  font-family: var(--ed-serif);
  font-size: clamp(32px, 5.5vw, 80px);
  font-weight: 300;
  line-height: 1.08;
  color: var(--ed-black);
  letter-spacing: -0.025em;
  margin: 0;
}

/* ══════════════════════════════════════
   CHAPTER 4 — MATERIAL STUDY
══════════════════════════════════════ */
.cao-ed__ch4 {
  padding: var(--ed-pad-y) var(--ed-pad-x);
  background: var(--ed-white);
}
.cao-ed__ch4-inner {
  max-width: 1400px;
}
.cao-ed__ch4-chapter {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-bottom: clamp(3rem, 6vh, 6rem);
  opacity: 0;
  transform: translateY(20px);
}
.cao-ed__ch4-label {
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ed-dim);
}
.cao-ed__ch4-layout {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 4vw, 5rem);
  align-items: start;
}
@media (max-width: 900px) {
  .cao-ed__ch4-layout { grid-template-columns: 1fr; }
}
.cao-ed__ch4-primary .cao-ed__img {
  height: clamp(400px, 65vh, 750px);
  object-fit: cover;
}
.cao-ed__ch4-secondary {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding-top: clamp(3rem, 8vh, 9rem);
}
.cao-ed__ch4-copy-block {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  opacity: 0;
  transform: translateY(20px);
}
.cao-ed__ch4-copy {
  font-family: var(--ed-serif);
  font-size: clamp(18px, 2.2vw, 28px);
  font-weight: 300;
  line-height: 1.25;
  color: var(--ed-black);
  margin: 0;
  letter-spacing: -0.01em;
}
.cao-ed__ch4-note {
  font-family: var(--ed-sans);
  font-size: 10px;
  line-height: 1.65;
  color: var(--ed-dim);
  letter-spacing: 0.04em;
  margin: 0;
}

/* ══════════════════════════════════════
   CHAPTER 5 — HUMAN SCALE
══════════════════════════════════════ */
.cao-ed__ch5 {
  background: var(--ed-white);
}
.cao-ed__ch5-dark {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: var(--ed-black);
}
.cao-ed__ch5-dark-img {
  width: 100%;
  height: clamp(400px, 70vh, 800px);
  object-fit: cover;
  display: block;
  opacity: 0.7;
}
.cao-ed__ch5-overlay-text {
  position: absolute;
  bottom: clamp(2rem, 6vh, 5rem);
  left: var(--ed-pad-x);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  opacity: 0;
  transform: translateY(20px);
}
.cao-ed__ch5-dark-copy {
  font-family: var(--ed-serif);
  font-size: clamp(28px, 5vw, 72px);
  font-weight: 300;
  line-height: 1.05;
  color: var(--ed-white);
  letter-spacing: -0.02em;
  margin: 0;
}
.cao-ed__ch5-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  padding: clamp(3rem, 6vh, 6rem) var(--ed-pad-x);
}
@media (max-width: 700px) {
  .cao-ed__ch5-strip { grid-template-columns: 1fr; gap: 1.5rem; }
}
.cao-ed__ch5-strip .cao-ed__img {
  height: clamp(220px, 38vh, 480px);
  object-fit: cover;
}

/* ══════════════════════════════════════
   CHAPTER 6 — SIGN-UP
══════════════════════════════════════ */
.cao-ed__ch6 {
  padding: clamp(6rem, 14vh, 14rem) var(--ed-pad-x);
  background: var(--ed-off);
  display: flex;
  justify-content: center;
}
.cao-ed__ch6-inner {
  max-width: 500px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4rem;
  opacity: 0;
  transform: translateY(30px);
}
.cao-ed__ch6-headline {
  font-family: var(--ed-serif);
  font-size: clamp(28px, 4vw, 56px);
  font-weight: 300;
  line-height: 1.1;
  color: var(--ed-black);
  letter-spacing: -0.02em;
  margin: 0;
}
.cao-ed__ch6-copy {
  font-family: var(--ed-sans);
  font-size: 11px;
  line-height: 1.7;
  color: var(--ed-dim);
  margin: 0;
  letter-spacing: 0.03em;
}
.cao-ed__ch6-form {
  display: flex;
  gap: 0;
  width: 100%;
  max-width: 380px;
  border: 1px solid var(--ed-faint);
  border-radius: 100px;
  overflow: hidden;
  background: var(--ed-white);
}
.cao-ed__ch6-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  padding: 0.85rem 1.4rem;
  font-family: var(--ed-sans);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ed-black);
}
.cao-ed__ch6-input::placeholder { color: var(--ed-dim); }
.cao-ed__ch6-btn {
  background: var(--ed-black);
  color: var(--ed-white);
  border: none;
  cursor: pointer;
  padding: 0.85rem 1.6rem;
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  border-radius: 100px;
  transition: background 0.3s ease;
  white-space: nowrap;
}
.cao-ed__ch6-btn:hover { background: #333; }

/* ══════════════════════════════════════
   CHAPTER 7 — STORE INFO
══════════════════════════════════════ */
.cao-ed__ch7 { background: var(--ed-white); }
.cao-ed__ch7-dark {
  position: relative;
  overflow: hidden;
}
.cao-ed__ch7-dark-img {
  width: 100%;
  height: clamp(360px, 60vh, 680px);
  object-fit: cover;
  display: block;
  filter: brightness(0.45);
}
.cao-ed__ch7-dark-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--ed-pad-y) var(--ed-pad-x);
  gap: 1.4rem;
  opacity: 0;
  transform: translateY(20px);
}
.cao-ed__ch7-note {
  font-family: var(--ed-sans);
  font-size: clamp(12px, 1.3vw, 15px);
  line-height: 1.75;
  color: rgba(255,255,255,0.65);
  margin: 0;
  max-width: 420px;
}
.cao-ed__ch7-btn {
  display: inline-block;
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.25);
  padding: 0.7rem 1.4rem;
  border-radius: 100px;
  transition: border-color 0.3s ease, color 0.3s ease;
  align-self: flex-start;
}
.cao-ed__ch7-btn:hover {
  color: var(--ed-white);
  border-color: rgba(255,255,255,0.65);
}
.cao-ed__ch7-info {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3vw;
  padding: clamp(3.5rem, 7vh, 7rem) var(--ed-pad-x);
  border-top: 1px solid var(--ed-faint);
}
@media (max-width: 860px) {
  .cao-ed__ch7-info { grid-template-columns: repeat(2, 1fr); gap: 2.5rem; }
}
@media (max-width: 480px) {
  .cao-ed__ch7-info { grid-template-columns: 1fr; gap: 2rem; }
}
.cao-ed__info-col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  opacity: 0;
  transform: translateY(20px);
}
.cao-ed__info-label {
  font-family: var(--ed-sans);
  font-size: 8px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ed-dim);
}
.cao-ed__info-value {
  font-family: var(--ed-sans);
  font-size: 11px;
  line-height: 1.7;
  color: var(--ed-black);
}

/* ══════════════════════════════════════
   CHAPTER 8 — WORDMARK
══════════════════════════════════════ */
.cao-ed__wordmark {
  padding: clamp(5rem, 12vh, 12rem) var(--ed-pad-x) clamp(3rem, 7vh, 7rem);
  background: var(--ed-white);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
  border-top: 1px solid var(--ed-faint);
}
.cao-ed__wordmark-inner {
  opacity: 0;
  transform: translateY(40px);
  line-height: 1;
}
.cao-ed__wordmark-text {
  font-family: var(--ed-serif);
  font-size: clamp(100px, 22vw, 320px);
  font-weight: 300;
  line-height: 0.85;
  color: var(--ed-black);
  letter-spacing: -0.04em;
  display: block;
  user-select: none;
}
.cao-ed__wordmark-sub {
  font-family: var(--ed-sans);
  font-size: 9px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ed-dim);
  margin: 0;
  opacity: 0;
}