/* Components shared across chapters. Dark is the default context; .chapter--light overrides where needed. */

/* ---------- Text helpers ---------- */
.red { color: var(--red-500); }
.grey { color: var(--grey-600); }
/* Outlined display type, as in the logo's ZONE. Falls back to solid where text-stroke is missing. */
.outline { color: transparent; -webkit-text-stroke: 1.5px var(--white); paint-order: stroke fill; }
@supports not (-webkit-text-stroke: 1px #fff) { .outline { color: var(--white); } }
@media (max-width: 599px) { .outline { -webkit-text-stroke-width: 1.2px; } }

.eyebrow {
  display: flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-display); font-size: var(--fs-eyebrow); font-weight: 600;
  line-height: 1.4; letter-spacing: var(--track-eyebrow); text-transform: uppercase;
  color: var(--grey-500);
}
.eyebrow::before { content: ''; width: 28px; height: 2px; flex: none; background: var(--red-500); transform: skewX(-30deg); }
.eyebrow__num { color: var(--red-400); }
.eyebrow--light { color: var(--ink-muted); }
.eyebrow--light .eyebrow__num { color: var(--red-600); }

/* ---------- Links ---------- */
.u-link { position: relative; }
.u-link::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -3px; height: 2px;
  background: var(--red-500); transform: scaleX(0); transform-origin: 100% 50%;
  transition: transform 0.5s var(--ease-in-out);
}
.u-link:hover::after, .u-link:focus-visible::after, .u-link.is-active::after { transform: scaleX(1); transform-origin: 0 50%; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.7rem; min-height: 44px;
  font-family: var(--font-display); font-size: var(--fs-button); font-weight: 600;
  letter-spacing: var(--track-button); text-transform: uppercase;
  border-bottom: 2px solid var(--line-dark-strong);
  transition: border-color var(--dur-hover) var(--ease-out), color var(--dur-hover) var(--ease-out);
}
.link-arrow > span { transition: transform var(--dur-hover) var(--ease-out); }
.link-arrow:hover { border-color: var(--red-500); }
.link-arrow:hover > span { transform: translateX(5px); }

/* ---------- Buttons: chamfered like the letterforms ---------- */
.btn {
  position: relative; isolation: isolate; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.9rem;
  min-height: 56px; padding: 0 1.9rem;
  font-family: var(--font-display); font-size: var(--fs-button); font-weight: 600;
  letter-spacing: var(--track-button); text-transform: uppercase; white-space: nowrap;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut));
  transition: color var(--dur-hover) var(--ease-out), background-color var(--dur-hover) var(--ease-out);
}
.btn::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  transform: translateX(-120%) skewX(-20deg); transform-origin: 0 50%;   /* -120%: the skew leans the edge ~10px back in */
  transition: transform 0.55s var(--ease-expo);
}
.btn:hover::before, .btn:focus-visible::before { transform: translateX(0) skewX(0); }
.btn__arrow { display: inline-block; transition: transform var(--dur-hover) var(--ease-out); }
.btn:hover .btn__arrow { transform: translateX(5px); }
.btn:focus-visible { outline-offset: 4px; }

/* Red: black text on red (white on this red fails AA at button size). Hover floods white. */
.btn--red { background: var(--red-500); color: var(--black-900); }
.btn--red::before { background: var(--white); }
.btn--outline { color: var(--white); box-shadow: inset 0 0 0 2px var(--white); }
.btn--outline::before { background: var(--white); }
.btn--outline:hover, .btn--outline:focus-visible { color: var(--black-900); }
.btn--ink { background: var(--ink); color: var(--white); }
.btn--ink::before { background: var(--red-500); }
.btn--ink:hover, .btn--ink:focus-visible { color: var(--black-900); }
.btn--sm { min-height: 44px; padding: 0 1.15rem; font-size: 0.75rem; --cut: 9px; }
.btn--block { width: 100%; justify-content: space-between; }
.btn--magnetic { will-change: transform; }
.btn[hidden] { display: none; }

/* ---------- Heartbeat line ---------- */
.pulse { width: 100%; height: clamp(40px, 4.4vw, 60px); overflow: visible; }
.pulse__line { fill: none; stroke: var(--red-500); stroke-width: 2.5; vector-effect: non-scaling-stroke; stroke-linejoin: miter; }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: var(--z-nav);
  height: var(--nav-h-top); color: var(--white);
  border-bottom: 1px solid transparent;
  transition: height 0.5s var(--ease-out), background-color 0.4s var(--ease-out), border-color 0.4s var(--ease-out), transform 0.45s var(--ease-in-out);
}
.nav.is-scrolled, .nav.is-menu-open {
  height: var(--nav-h);
  background-color: rgba(10, 10, 10, 0.8);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line-dark);
}
.nav.is-hidden { transform: translateY(-100%); }
.nav__bar { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: clamp(1rem, 2vw, 2rem); }
.nav__brand { display: inline-flex; align-items: center; min-height: 44px; flex: none; transform-origin: 0 50%; transition: transform 0.5s var(--ease-out); }
.nav__brand .z5logo { height: var(--brand-h); width: auto; aspect-ratio: 1692 / 798; }
.nav.is-scrolled .nav__brand, .nav.is-menu-open .nav__brand { transform: scale(var(--brand-dock)); }
.nav__links { display: none; }
.nav__links ul { display: flex; gap: clamp(1.25rem, 2.2vw, 2.5rem); }
.nav__links a {
  display: inline-block; padding-block: 0.75rem;
  font-family: var(--font-display); font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
}
.nav__links a::after { bottom: 6px; }
.nav__actions { display: flex; align-items: center; gap: clamp(0.75rem, 1.6vw, 1.5rem); }
.nav__cta { display: none; }
.nav__toggle {
  min-height: 44px; min-width: 64px; padding: 0 0.25rem;
  font-family: var(--font-display); font-size: 0.75rem; font-weight: 600; letter-spacing: var(--track-eyebrow); text-transform: uppercase;
  display: grid; place-items: center end;
}
.nav__toggle-label { grid-area: 1 / 1; transition: opacity var(--dur-micro) var(--ease-out), transform var(--dur-micro) var(--ease-out); }
.nav__toggle-label--close { opacity: 0; transform: translateY(6px); }
.nav__toggle[aria-expanded="true"] .nav__toggle-label--open { opacity: 0; transform: translateY(-6px); }
.nav__toggle[aria-expanded="true"] .nav__toggle-label--close { opacity: 1; transform: none; }
.nav__progress {
  position: absolute; left: 0; right: 0; bottom: -1px; height: 2px;
  background: var(--red-500); transform: scaleX(0); transform-origin: 0 50%; pointer-events: none;
}
@media (min-width: 640px) { .nav__cta { display: inline-flex; } }
@media (min-width: 1100px) {
  .nav__links { display: block; }
  .nav__toggle { display: none; }
}

/* Logo entrance: mountains rise, the heartbeat draws across, ZONE and the 5 arrive, MOTO settles. CSS only. */
.z5logo .z5-mountains, .z5logo .z5-heartbeat, .z5logo .z5-zone, .z5logo .z5-five, .z5logo .z5-moto { transform-box: fill-box; }
.motion-ok .nav { animation: fade 0.8s var(--ease-out) 0.05s both; }
.motion-ok .z5logo .z5-mountains { animation: logo-rise 1s var(--ease-expo) 0.15s both; }
.motion-ok .z5logo .z5-heartbeat { animation: wipe 0.9s var(--ease-in-out) 0.55s both; }
.motion-ok .z5logo .z5-zone { animation: logo-slide 0.9s var(--ease-expo) 0.35s both; }
.motion-ok .z5logo .z5-five { animation: logo-five 0.9s var(--ease-expo) 0.6s both; }
.motion-ok .z5logo .z5-moto { animation: fade 0.8s var(--ease-out) 0.9s both; }
@keyframes logo-rise { from { transform: translateY(30%); clip-path: inset(0 0 100% 0); } to { transform: none; clip-path: inset(0 0 0 0); } }
@keyframes logo-slide { from { opacity: 0; transform: translateX(-6%); } to { opacity: 1; transform: none; } }
@keyframes logo-five { from { opacity: 0; transform: translateX(14%) skewX(-12deg); } to { opacity: 1; transform: none; } }

/* ---------- Mobile menu ---------- */
.menu {
  position: fixed; inset: 0; z-index: var(--z-menu);
  background: var(--black-850);
  padding-top: calc(var(--nav-h) + 2rem);
  overflow-y: auto; overscroll-behavior: contain;
  clip-path: inset(0 0 100% 0);
  transition: clip-path 0.6s var(--ease-expo);
}
.menu[hidden] { display: none; }
.menu.is-open { clip-path: inset(0 0 0 0); }
.menu__inner { display: flex; flex-direction: column; gap: 2.5rem; padding-bottom: 2.5rem; min-height: calc(100% - 2rem); }
.menu__links li { border-top: 1px solid var(--line-dark); }
.menu__links li:last-child { border-bottom: 1px solid var(--line-dark); }
.menu__links a {
  display: flex; align-items: baseline; gap: 1rem; padding-block: 0.85rem;
  font-family: var(--font-display); font-weight: 700; font-style: italic; text-transform: uppercase;
  font-size: clamp(1.9rem, 8vw, 2.75rem); line-height: 1.05;
  opacity: 0; transform: translateY(14px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out), color var(--dur-micro) var(--ease-out);
}
.menu__links a:hover { color: var(--red-500); }
.menu.is-open .menu__links a { opacity: 1; transform: none; transition-delay: calc(0.12s + var(--i, 0) * 0.06s); }
.menu__num { font-family: var(--font-display); font-style: normal; font-weight: 600; font-size: 0.75rem; letter-spacing: 0.14em; color: var(--red-400); }
.menu__meta { display: grid; gap: 1.25rem; margin-top: auto; color: var(--silver-300); font-size: 0.9375rem; }
@media (min-width: 1100px) { .menu { display: none !important; } }

/* ---------- Hairline rows ---------- */
[data-row] { position: relative; --line: 1; }
[data-row]::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 1px;
  background: var(--line-dark-strong); transform: scaleX(var(--line)); transform-origin: 0 50%;
  transition: background-color var(--dur-hover) var(--ease-out);
}
.chapter--light [data-row]::before { background: var(--line-light-strong); }
[data-row]:hover::before { background: var(--red-500); }

/* Numbered steps (demo, build) */
.steps, .build__steps { border-bottom: 1px solid var(--line-dark-strong); }
.step { display: grid; grid-template-columns: 3.25rem minmax(0, 1fr); gap: 0 1rem; padding-block: 1.4rem; }
.step__num { font-family: var(--font-display); font-weight: 600; font-size: 0.875rem; letter-spacing: 0.1em; color: var(--red-400); line-height: 1.9; }
.step__title { font-size: var(--fs-h4); line-height: 1.15; }
.step p { margin-top: 0.4rem; color: var(--silver-300); max-width: 46ch; }

/* Ledger rows (servicing) */
.ledger { border-bottom: 1px solid var(--line-light-strong); }
.ledger__row { display: grid; grid-template-columns: 3.25rem minmax(0, 1fr); gap: 0 1rem; padding-block: clamp(1.4rem, 2.6vw, 2rem); }
.ledger__num { font-family: var(--font-display); font-weight: 600; font-size: 0.875rem; letter-spacing: 0.1em; color: var(--red-600); line-height: 2.2; transition: transform var(--dur-hover) var(--ease-out); }
.ledger__title { font-size: var(--fs-h3); line-height: 1.05; color: var(--ink); }
.ledger__row p { margin-top: 0.6rem; color: var(--ink-muted); max-width: 52ch; }
.ledger__row:hover .ledger__num { transform: translateX(5px); }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.chips li {
  padding: 0.5rem 0.9rem;
  font-family: var(--font-display); font-weight: 600; font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--silver-200); border: 1px solid var(--line-dark-strong);
  clip-path: polygon(7px 0, 100% 0, 100% calc(100% - 7px), calc(100% - 7px) 100%, 0 100%, 0 7px);
  transition: color var(--dur-micro) var(--ease-out), background-color var(--dur-micro) var(--ease-out), border-color var(--dur-micro) var(--ease-out);
}
.chips li:hover { color: var(--black-900); background: var(--red-500); border-color: var(--red-500); }

/* ---------- Marquee ---------- */
.marquee { display: flex; overflow: hidden; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marquee__track { display: flex; flex: none; gap: 0; animation: marquee 38s linear infinite; }
.marquee:hover .marquee__track, .marquee:focus-within .marquee__track { animation-play-state: paused; }
.marquee__track li {
  display: inline-flex; align-items: center; gap: 0.5rem; padding-inline: 1.6rem; white-space: nowrap;
  font-family: var(--font-display); font-weight: 700; font-style: italic; text-transform: uppercase;
  font-size: clamp(1rem, 0.8rem + 0.8vw, 1.5rem); letter-spacing: 0.02em; color: var(--silver-300);
}
.marquee__track li::after { content: ''; width: 9px; height: 9px; margin-left: 1.6rem; background: var(--red-500); transform: skewX(-20deg); }
.marquee__track li span { font-size: 0.6em; font-style: normal; font-weight: 600; letter-spacing: 0.2em; color: var(--red-400); }
@keyframes marquee { to { transform: translateX(-100%); } }
@media (prefers-reduced-motion: reduce) {
  .marquee__track { animation: none; }
}

/* ---------- Footer ---------- */
.footer { background: var(--black-950); color: var(--white); padding-block: clamp(4rem, 8vw, 6.5rem) 1.5rem; border-top: 2px solid var(--red-500); }
.footer__top { display: grid; gap: 3rem 2rem; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.footer__brand { grid-column: 1 / -1; }
.footer__logo { display: inline-block; }
.footer__logo img { width: clamp(180px, 22vw, 260px); }
.footer__statement { margin-top: 2rem; max-width: 14ch; font-family: var(--font-display); font-weight: 700; font-style: italic; text-transform: uppercase; font-size: clamp(1.75rem, 1rem + 2.6vw, 3rem); line-height: 0.98; }
.footer__head { font-family: var(--font-display); font-style: normal; font-weight: 600; font-size: var(--fs-eyebrow); letter-spacing: var(--track-eyebrow); color: var(--grey-500); margin-bottom: 1.25rem; }
.footer__col li { color: var(--silver-300); font-size: 0.9375rem; line-height: 1.5; }
.footer__col li + li { margin-top: 0.55rem; }
.footer__col a { display: inline-block; padding-block: 0.2rem; color: var(--silver-300); transition: color var(--dur-hover) var(--ease-out); }
.footer__col a:hover { color: var(--white); }
.footer__soon { margin-left: 0.4rem; font-family: var(--font-display); font-weight: 600; font-size: 0.625rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--red-400); }
.footer__bottom {
  margin-top: clamp(3rem, 6vw, 5rem); padding-top: 1rem; border-top: 1px solid var(--line-dark);
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 2rem;
  font-size: 0.8125rem; color: var(--grey-500);
}
.footer__bottom p { padding-block: 0.6rem; }
.footer__legal { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; }
.footer__legal a { display: inline-block; padding-block: 0.6rem; }
@media (min-width: 900px) {
  .footer__top { grid-template-columns: minmax(0, 5fr) repeat(3, minmax(0, 2.2fr)); }
  .footer__brand { grid-column: auto; }
}

/* Shared keyframes */
@keyframes fade { from { opacity: 0; } }
@keyframes rise { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes wipe { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes draw { from { stroke-dashoffset: 1; } to { stroke-dashoffset: 0; } }
@keyframes line-up { from { transform: translateY(112%); } }