/* ============================================================
   CARBONE ZERO — V2 cinematic layer
   Loads after main.css. Full-bleed imagery, GSAP-driven motion.
   ============================================================ */

/* ---------- Header: harmonized, transparent over dark heroes ---------- */
.site-header { transition: transform 420ms var(--ease-out), border-color var(--dur-med) var(--ease-out), background var(--dur-med) var(--ease-out); }
.site-header.is-hidden { transform: translateY(-101%); }
.header-inner { height: 4.75rem; }
.nav { gap: var(--space-lg); }
.nav a { font-size: 0.875rem; font-weight: 600; letter-spacing: 0.01em; }
.nav .btn { padding: 0.6rem 1.25rem; font-size: 0.875rem; }
.nav a.btn::after { display: none; }
.site-header .nav a.btn-primary { color: var(--paper-on-ink); } /* fix ink-on-ink pill in scrolled state */

/* Anchor targets clear the fixed header */
[id] { scroll-margin-top: 6.5rem; }

/* Type scale: keep section H2 below page H1 */
h2 { font-size: clamp(2.2rem, 1.4rem + 2.6vw, 3.4rem); }

body.dark-top .site-header:not(.scrolled) {
  background: transparent;
  -webkit-backdrop-filter: none; backdrop-filter: none;
  border-bottom-color: transparent;
}
body.dark-top .site-header:not(.scrolled) .brand,
body.dark-top .site-header:not(.scrolled) .nav a { color: var(--paper-on-ink); }
body.dark-top .site-header:not(.scrolled) .brand .brand-tag { color: var(--leaf); }
body.dark-top .site-header:not(.scrolled) .nav a::after { background: var(--leaf); }
body.dark-top .site-header:not(.scrolled) .nav .btn-primary {
  background: var(--leaf-deep); border-color: var(--leaf-deep); color: #fff;
}
body.dark-top .site-header:not(.scrolled) .nav .btn-primary:hover {
  background: var(--ink); border-color: var(--ink); color: #fff;
}
@media (max-width: 640px) {
  body.dark-top .site-header:not(.scrolled) .nav a { color: var(--ink); }
}

/* ---------- Brand lockup: real Carbone Zero emblem ---------- */
.brand { gap: 0.7rem; align-items: center; }
.brand-mark {
  width: 2.35rem; height: 2.35rem; flex: none;
  border-radius: 50%; background: var(--paper);
  padding: 0.12rem;
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--ink) 12%, transparent);
}
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 1.15rem; letter-spacing: 0.005em; }
.brand .brand-tag { margin-bottom: 0.22rem; }
body.dark-top .site-header:not(.scrolled) .brand-mark {
  box-shadow: 0 0 0 1px color-mix(in oklab, var(--paper-on-ink) 30%, transparent);
}

.footer-logo {
  width: 9rem; height: auto;
  background: var(--paper); border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem; margin-bottom: var(--space-sm);
}

/* ---------- Cinematic hero ---------- */
.hero-cine {
  position: relative; min-height: 92svh;
  display: flex; align-items: flex-end;
  padding: 7.5rem 0 clamp(3rem, 6vh, 5.5rem);
  overflow: clip; isolation: isolate;
  color: var(--paper-on-ink);
}
.hero-cine h1 { font-size: min(var(--text-hero), 9.2vh); }
.hero-media {
  position: absolute; inset: 0; z-index: -2; margin: 0; overflow: hidden;
}
.hero-media img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.12); will-change: transform;
}
.hero-scrim {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(to top, oklch(18% 0.04 155 / 0.90) 0%, oklch(18% 0.04 155 / 0.58) 38%, oklch(18% 0.04 155 / 0.34) 62%, oklch(18% 0.04 155 / 0.62) 100%),
    linear-gradient(to right, oklch(18% 0.04 155 / 0.55) 0%, oklch(18% 0.04 155 / 0.10) 62%, transparent 100%);
}
.hero-cine .eyebrow { color: var(--paper-on-ink); }
.hero-cine .eyebrow::before { background: var(--leaf); width: 2.4rem; }
.hero-cine h1 { max-width: 15ch; color: var(--paper-on-ink); }
.hero-cine h1 em { color: var(--leaf); font-style: italic; }
.hero-cine .lede { color: color-mix(in oklab, var(--paper-on-ink) 88%, transparent); max-width: 44ch; }
.hero-cine .hero-note { color: color-mix(in oklab, var(--paper-on-ink) 65%, transparent); }
.hero-cine .btn-ghost { color: var(--paper-on-ink); border-color: color-mix(in oklab, var(--paper-on-ink) 45%, transparent); }
.hero-cine .btn-ghost:hover { background: oklch(100% 0 0 / 0.12); }
.hero-cine .btn-primary { background: var(--leaf); border-color: var(--leaf); color: var(--ink); }
.hero-cine .btn-primary:hover { background: var(--paper-on-ink); border-color: var(--paper-on-ink); box-shadow: none; }

/* Manual line-split reveal */
.hl { display: block; overflow: clip; }
.hl-in { display: block; transform: translateY(112%); will-change: transform; }
html.no-gsap .hl-in, html.reduced-motion .hl-in { transform: none; }

.hero-fade { opacity: 0; transform: translateY(18px); will-change: transform, opacity; }
html.no-gsap .hero-fade, html.reduced-motion .hero-fade { opacity: 1; transform: none; }

/* Scroll cue */
.scroll-cue {
  position: absolute; right: var(--gutter); bottom: clamp(3rem, 6vh, 5.5rem);
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-mono); font-size: var(--text-xs); letter-spacing: 0.14em;
  color: color-mix(in oklab, var(--paper-on-ink) 70%, transparent);
  text-transform: uppercase; writing-mode: vertical-rl;
}
.scroll-cue::after {
  content: ""; width: 1px; height: 3.4rem;
  background: linear-gradient(to bottom, var(--leaf), transparent);
  animation: cue 2.2s var(--ease-inout) infinite;
}
@keyframes cue { 0% { transform: scaleY(0); transform-origin: top; } 55% { transform: scaleY(1); transform-origin: top; } 56% { transform-origin: bottom; } 100% { transform: scaleY(0); transform-origin: bottom; } }

/* ---------- GSAP reveal primitives ---------- */
[data-reveal] { opacity: 0; transform: translateY(28px); will-change: transform, opacity; }
html.no-gsap [data-reveal], html.reduced-motion [data-reveal] { opacity: 1; transform: none; }

/* ---------- Statement band (asymmetric rhythm break) ---------- */
.statement { padding-block: clamp(4rem, 8vh, 7rem); }
.statement-grid { display: grid; grid-template-columns: 0.34fr 1fr; gap: var(--space-xl); align-items: start; }
.statement-meta {
  font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-muted); line-height: 2; padding-top: 0.7rem;
  border-top: 1px solid var(--line);
}
.statement-lede {
  font-family: var(--font-display); font-weight: 380;
  font-size: clamp(1.5rem, 1rem + 1.9vw, 2.6rem); line-height: 1.28;
  letter-spacing: -0.012em; color: var(--ink); max-width: 30ch;
}

/* ---------- Pull quote ---------- */
.pullquote { padding-block: clamp(4rem, 9vh, 8rem); background: var(--paper-2); border-block: 1px solid var(--line); }
.pullquote blockquote { margin-inline: auto; text-align: center; max-width: 60rem; }
.pullquote p {
  font-family: var(--font-display); font-weight: 380;
  font-size: clamp(1.55rem, 0.9rem + 2.4vw, 3rem); line-height: 1.18; letter-spacing: -0.018em;
  max-width: 17em; margin-inline: auto; text-wrap: balance;
}
.pullquote em { font-style: italic; color: var(--leaf-deep); display: block; margin-top: 0.5em; font-size: 0.72em; }
.pullquote blockquote::before {
  content: ""; display: block; width: 2.4rem; height: 1px;
  background: var(--leaf-deep); margin: 0 auto var(--space-lg);
}

/* ---------- Chain of proof: pinned, image per step ---------- */
.chain-pin { position: relative; }
.chain-stage { min-height: 100svh; display: flex; align-items: center; padding-block: var(--space-xl); }
.chain-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2xl); align-items: center; width: 100%; }
.chain-media {
  position: relative; aspect-ratio: 4 / 3; border-radius: var(--radius-md);
  overflow: hidden; background: var(--paper-2); margin: 0;
}
.chain-media img {
  position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover;
  opacity: 0; transform: scale(1.06);
  transition: opacity 700ms var(--ease-out), transform 1400ms var(--ease-out);
}
.chain-media img.is-current { opacity: 1; transform: scale(1); }
.chain-counter {
  position: absolute; left: var(--space-md); bottom: var(--space-md); z-index: 2;
  font-size: var(--text-xs); letter-spacing: 0.16em; color: var(--paper-on-ink);
  background: oklch(18% 0.04 155 / 0.6); padding: 0.35rem 0.7rem; border-radius: var(--radius-pill);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
.chain-counter b { color: var(--leaf); font-weight: 700; }
/* Pinned copy must fit one viewport — compact scale */
.chain-copy .ledger-statement {
  margin-top: var(--space-sm); margin-bottom: var(--space-md);
  font-size: clamp(1.35rem, 0.9rem + 1.5vw, 2.1rem); max-width: 24ch;
}
.chain-copy .chain-v2 li { padding-block: 0.85rem; }
.chain-copy .chain-v2 li::before { top: 0.95rem; }
.chain-copy .chain-v2 h3 { font-size: var(--text-sm); letter-spacing: 0.01em; }
.chain-copy .chain-v2 p { font-size: var(--text-sm); line-height: 1.5; max-width: 46ch; }
@media (max-height: 820px) and (min-width: 961px) {
  .chain-copy .ledger-statement { font-size: 1.5rem; margin-bottom: var(--space-sm); }
  .chain-copy .chain-v2 li { padding-block: 0.6rem; }
  .chain-copy .chain-v2 p { font-size: var(--text-xs); }
  .chain-media { aspect-ratio: 1 / 1; }
}
html.no-gsap .chain-media img, html.reduced-motion .chain-media img { position: relative; opacity: 1; transform: none; }
html.no-gsap .chain-media, html.reduced-motion .chain-media { aspect-ratio: auto; display: grid; gap: var(--space-xs); }
html.no-gsap .chain-counter, html.reduced-motion .chain-counter { display: none; }

/* ---------- Page transition curtain ---------- */
.curtain {
  position: fixed; inset: 0; z-index: 999; background: var(--ink);
  transform: scaleY(0); transform-origin: bottom; pointer-events: none;
}
.curtain-mark {
  position: absolute; inset: 0; display: grid; place-items: center;
  opacity: 0;
}
.curtain-mark img { width: 3.4rem; height: 3.4rem; border-radius: 50%; background: var(--paper); padding: 0.2rem; }
html.reduced-motion .curtain { display: none; }

/* ---------- Full-bleed image break ---------- */
.break {
  position: relative; height: clamp(20rem, 52vh, 34rem);
  overflow: clip; isolation: isolate;
}
.break img {
  position: absolute; inset: -14% 0; height: 128%; width: 100%;
  object-fit: cover; will-change: transform;
}
.break-caption {
  position: absolute; inset: auto 0 0 0; z-index: 1;
  padding: var(--space-lg) var(--gutter);
  display: flex; justify-content: space-between; align-items: end; gap: var(--space-md);
  background: linear-gradient(to top, oklch(20% 0.04 155 / 0.72), transparent);
  color: var(--paper-on-ink);
}
.break-caption .mono { font-size: var(--text-xs); letter-spacing: 0.12em; text-transform: uppercase; color: var(--leaf); }
.break-caption p { font-family: var(--font-display); font-size: var(--text-lg); max-width: 26ch; line-height: 1.25; }

/* ---------- Chain of proof — pinned ---------- */
.chain-section .ledger { align-items: stretch; }
.ledger-media {
  margin-top: var(--space-lg); border-radius: var(--radius-md); overflow: hidden;
  aspect-ratio: 4 / 3; position: relative;
}
.ledger-media img { width: 100%; height: 118%; object-fit: cover; will-change: transform; }
.chain-v2 { position: relative; padding-left: 1.4rem; }
.chain-rail { position: absolute; left: 0; top: 0; bottom: 0; width: 2px; background: var(--line); }
.chain-rail-fill { position: absolute; inset: 0 0 auto; height: 0%; width: 100%; background: var(--leaf-deep); }
.chain-v2 li { border-top-color: transparent; opacity: 0.3; transition: opacity 400ms var(--ease-out); padding-left: 3rem; }
.chain-v2 li.is-active { opacity: 1; }
.chain-v2 li::before { left: 0.4rem; }
html.no-gsap .chain-v2 li, html.reduced-motion .chain-v2 li { opacity: 1; }

/* ---------- Market rows: cursor preview ---------- */
.rows { position: relative; }
.row-preview {
  position: fixed; z-index: 60; top: 0; left: 0;
  width: clamp(13rem, 19vw, 17rem); aspect-ratio: 3 / 2;
  border-radius: var(--radius-md); overflow: hidden;
  pointer-events: none; opacity: 0; transform: scale(0.9) rotate(-2deg);
  box-shadow: 0 24px 48px -18px oklch(20% 0.05 155 / 0.5);
  will-change: transform, opacity;
}
.row-preview img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 260ms var(--ease-out); }
.row-preview img.is-current { opacity: 1; }
@media (hover: none), (pointer: coarse) { .row-preview { display: none; } }

/* ---------- CTA band with texture ---------- */
.cta-band .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; column-gap: var(--space-xl); }
.cta-band .wrap > * { grid-column: 1; }
.cta-band .wrap > .hero-ctas { grid-column: 2; grid-row: 2 / span 2; align-self: end; justify-content: flex-end; margin-top: 0; }
@media (max-width: 960px) {
  .cta-band .wrap { grid-template-columns: 1fr; }
  .cta-band .wrap > .hero-ctas { grid-column: 1; grid-row: auto; justify-content: flex-start; margin-top: var(--space-lg); }
}
.cta-v2 { position: relative; overflow: clip; }
.cta-v2 .cta-bg { position: absolute; inset: -12% 0; z-index: 0; }
.cta-v2 .cta-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.5; will-change: transform; }
.cta-v2 .cta-bg::after { content: ""; position: absolute; inset: 0; background: oklch(24% 0.045 155 / 0.78); }
.cta-v2 .wrap { position: relative; z-index: 1; }

/* ---------- Page hero with media (subpages) ---------- */
.page-hero-media {
  position: relative; margin-top: 0; height: clamp(22rem, 56vh, 34rem);
  overflow: clip; isolation: isolate;
}
.page-hero-media img { width: 100%; height: 124%; object-fit: cover; will-change: transform; }
.page-hero-media .hero-scrim {
  background:
    linear-gradient(to bottom, oklch(20% 0.04 155 / 0.55), transparent 32%),
    linear-gradient(to top, oklch(20% 0.04 155 / 0.68), transparent 62%);
}
.page-hero-media .page-hero-title .eyebrow { color: var(--paper-on-ink); }
.page-hero-media .page-hero-title {
  position: absolute; inset: auto 0 0 0; z-index: 1;
  padding: var(--space-lg) 0;
  color: var(--paper-on-ink);
}
.page-hero-media h1 { font-size: clamp(2.2rem, 3vw + 0.8rem, 4rem); max-width: 22ch; color: var(--paper-on-ink); }
.page-hero-media .eyebrow { color: var(--leaf); }
.page-hero-media .eyebrow::before { background: var(--leaf); }

.page-lede-band { padding-block: var(--space-lg) 0; }
.page-lede-band .lede { max-width: 52ch; }

/* ---------- Card refinements ---------- */
.card { border: 0; border-top: 1px solid var(--line); border-radius: 0; background: transparent; padding-inline: 0; }
.card:hover { transform: none; box-shadow: none; border-top-color: var(--leaf-deep); }
.card h3 { font-size: var(--text-xl); font-weight: 480; letter-spacing: -0.01em; max-width: 14ch; }
.card .card-more { display: inline-flex; align-items: center; gap: 0.4rem; }
.card .card-more::after { content: "\2192"; transition: transform var(--dur-fast) var(--ease-out); }
.card .card-more:hover::after { transform: translateX(3px); }

/* ---------- Marquee refinement ---------- */
.ticker { background: var(--ink); border-block-color: var(--ink); color: var(--paper-on-ink); }
.ticker-item { border-right-color: var(--line-dark); }
.ticker-item b { color: var(--leaf); }

/* ---------- Footer joins dark bands cleanly ---------- */
.site-footer { margin-top: 0; border-top: 1px solid var(--line-dark); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .hero-cine { min-height: 86svh; }
  .scroll-cue { display: none; }
  .chain-v2 li { padding-left: 2.6rem; }
  .statement-grid { grid-template-columns: 1fr; gap: var(--space-md); }
  .chain-layout { grid-template-columns: 1fr; gap: var(--space-lg); }
  .chain-stage { min-height: 0; }
  .chain-media { aspect-ratio: 16 / 10; }
}
@media (max-width: 640px) {
  .hero-cine h1 { font-size: clamp(2.4rem, 11vw, 3.2rem); }
  .break { height: clamp(14rem, 40vh, 20rem); }
  .break-caption { flex-direction: column; align-items: flex-start; gap: var(--space-xs); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-media img, .break img, .ledger-media img, .cta-v2 .cta-bg img { transform: none !important; }
  .hl-in, .hero-fade, [data-reveal] { transform: none !important; opacity: 1 !important; }
  .scroll-cue::after { animation: none; }
  .row-preview { display: none; }
}