/* ============================================================
   IDEAS BY LEO — Global chrome
   Loader · Nav · Progress · Cursor · Marquee · Buttons ·
   Reveal · Domino spine
   ============================================================ */

/* ---------------- LOADER / OVERTURE ---------------- */
#loader {
  position: fixed; inset: 0; z-index: var(--z-loader);
  background: var(--paper); color: var(--ink);
  display: grid; place-items: center;
  transition: opacity 0.6s var(--ease-standard), visibility 0.6s;
}
#loader.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.loader__inner { display: grid; justify-items: center; gap: 22px; width: min(560px, 82vw); }
.loader__mark { width: clamp(120px, 22vw, 240px); color: var(--ink); }
.loader__mark svg { width: 100%; height: auto; }
.loader__bar {
  width: 100%; height: 3px; background: var(--ink-100); overflow: hidden; position: relative;
}
.loader__fill { position: absolute; inset: 0; background: var(--ink); transform-origin: left; transform: scaleX(0); }
.loader__row { width: 100%; display: flex; justify-content: space-between; align-items: baseline; }
.loader__word { font-family: var(--font-script); font-size: clamp(1.4rem,3vw,2.2rem); }
.loader__count { font-family: var(--font-display); font-size: clamp(1.4rem,3vw,2.2rem); letter-spacing: 0.04em; }

/* ---------------- NAV ---------------- */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav);
  display: flex; align-items: center; justify-content: space-between;
  padding: clamp(14px,2vw,22px) var(--gutter);
  color: var(--chrome-fg);
  transition: transform var(--dur-slow) var(--ease-standard), color var(--dur-slow) var(--ease-standard);
}
#nav.is-hidden { transform: translateY(-120%); }
.nav__brand { display: flex; align-items: center; gap: 12px; color: var(--chrome-fg); }
.nav__brand svg { width: 72px; height: auto; color: currentColor; transition: color var(--dur-slow); }
.nav__links { display: flex; gap: clamp(14px,2vw,30px); align-items: center; }
.nav__link {
  font-family: var(--font-body); font-weight: 700; font-size: 11px;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--chrome-fg);
  position: relative; padding: 8px 2px;
}
.nav__link::after {
  content: ""; position: absolute; left: 0; bottom: 2px; height: 2px; width: 100%;
  background: var(--chrome-accent); transform: scaleX(0); transform-origin: right;
  transition: transform var(--dur-base) var(--ease-standard);
}
.nav__link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__cta {
  font-family: var(--font-body); font-weight: 700; font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; border: 2px solid var(--chrome-fg); color: var(--chrome-fg);
  padding: 10px 16px; border-radius: 2px; position: relative; overflow: hidden;
  transition: color var(--dur-base), border-color var(--dur-slow);
}
.nav__cta > span { position: relative; z-index: 1; }
.nav__cta::before {
  content: ""; position: absolute; inset: 0; background: var(--chrome-fg);
  transform: translateY(101%); transition: transform var(--dur-base) var(--ease-domino); z-index: 0;
}
.nav__cta:hover::before { transform: translateY(0); }
.nav__cta:hover { color: var(--world-bg, #ffffff); }
@media (max-width: 760px) { .nav__links { display: none; } }

/* ---------------- SCROLL PROGRESS ---------------- */
#progress {
  position: fixed; left: 0; top: 0; height: 3px; width: 100%; z-index: calc(var(--z-nav) + 1);
  transform: scaleX(0); transform-origin: left; background: var(--chrome-accent);
  transition: background var(--dur-slow);
}

/* ---------------- CUSTOM CURSOR ---------------- */
#cursor { position: fixed; top: 0; left: 0; z-index: var(--z-cursor); pointer-events: none;
  color: var(--chrome-fg); will-change: transform; transition: color var(--dur-slow); }
.cursor__ring {
  position: absolute; width: 38px; height: 38px; margin: -19px 0 0 -19px;
  border: 1.5px solid currentColor; border-radius: 2px;
  transition: width var(--dur-base) var(--ease-domino), height var(--dur-base) var(--ease-domino),
              margin var(--dur-base) var(--ease-domino), border-radius var(--dur-base), transform var(--dur-base);
}
.cursor__dot {
  position: absolute; width: 10px; height: 10px; margin: -5px 0 0 -5px; background: currentColor;
  border-radius: 1px; box-shadow: 3px 3px 0 currentColor;
}
#cursor.is-hover .cursor__ring { width: 60px; height: 60px; margin: -30px 0 0 -30px; transform: rotate(45deg); }
#cursor.is-down  .cursor__ring { width: 24px; height: 24px; margin: -12px 0 0 -12px; transform: rotate(45deg); }
#cursor.is-text  .cursor__ring { width: 3px; height: 30px; margin: -15px 0 0 -1px; border-radius: 0; }
.cursor__label {
  position: absolute; left: 24px; top: 12px; font-family: var(--font-body); font-weight: 700;
  font-size: 10px; letter-spacing: 0.16em; text-transform: uppercase; color: currentColor;
  opacity: 0; transform: translateY(4px); transition: opacity var(--dur-base), transform var(--dur-base); white-space: nowrap;
}
#cursor.has-label .cursor__label { opacity: 1; transform: translateY(0); }
@media (hover: none) { #cursor { display: none; } }

/* ---------------- BUTTONS ---------------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-body); font-weight: 700; font-size: 14px;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 16px 26px; border-radius: 2px;
  background: var(--accent-2); color: var(--on-accent);
  border: 2px solid var(--accent-2);
  position: relative; overflow: hidden; will-change: transform;
  transition: color var(--dur-base) var(--ease-standard);
}
.btn::before {
  content: ""; position: absolute; inset: 0; background: var(--accent);
  transform: translateY(101%); transition: transform var(--dur-base) var(--ease-domino); z-index: 0;
}
.btn:hover::before { transform: translateY(0); }
.btn > * { position: relative; z-index: 1; }
.btn:hover { color: var(--on-accent); }
.btn--ghost { background: transparent; color: var(--fg); border-color: var(--fg); }
.btn--ghost::before { background: var(--fg); }
.btn--ghost:hover { color: var(--bg); }
.btn__arrow { transition: transform var(--dur-base) var(--ease-domino); }
.btn:hover .btn__arrow { transform: translateX(5px); }

/* ---------------- MARQUEE ---------------- */
.marquee { overflow: hidden; width: 100%; white-space: nowrap; display: flex; user-select: none; }
.marquee__track { display: flex; flex: 0 0 auto; will-change: transform; animation: marquee-scroll linear infinite; }
.marquee__track > * { flex: 0 0 auto; padding-right: 0.35em; }
.marquee--rev .marquee__track { animation-direction: reverse; }
@keyframes marquee-scroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.marquee-word {
  font-family: var(--font-display); text-transform: uppercase; line-height: 0.9;
  font-size: clamp(3rem, 10vw, 9rem); color: var(--fg); letter-spacing: 0.01em;
}
.marquee-word--outline {
  color: transparent; -webkit-text-stroke: 2px var(--fg); text-stroke: 2px var(--fg);
}
.marquee-star { color: var(--accent); }

/* ---------------- REVEAL ---------------- */
[data-reveal] { opacity: 0; transform: translateY(38px); }
[data-reveal].is-in { opacity: 1; transform: none; transition: opacity 0.7s var(--ease-enter), transform 0.9s var(--ease-enter); }
.reveal-lines { overflow: hidden; }
.reveal-lines .line { display: block; }

/* ---------------- DOMINO SPINE (fixed left rail) ---------------- */
#spine {
  position: fixed; left: clamp(12px, 2.4vw, 34px); top: 0; bottom: 0; width: 52px;
  z-index: var(--z-spine); pointer-events: none; color: var(--chrome-fg);
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
  transition: color var(--dur-slow);
}
.spine__run { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.spine__tile {
  width: 30px; height: 34px; background: var(--chrome-bg, transparent);
  border: 1.5px solid currentColor; box-shadow: 4px 4px 0 currentColor;
  border-radius: 0; transform-origin: 50% 100%; will-change: transform;
}
.spine__tile.is-gap { margin-top: 12px; }
.spine__label {
  position: absolute; bottom: 22px; left: 50%; transform: translateX(-50%) rotate(180deg);
  writing-mode: vertical-rl; font-family: var(--font-body); font-weight: 700; font-size: 10px;
  letter-spacing: 0.32em; text-transform: uppercase; color: currentColor; opacity: 0.42; white-space: nowrap;
}
@media (max-width: 980px) { #spine { display: none; } }

/* ---------------- CHAPTER INDEX MARK ---------------- */
.chapter-index {
  font-family: var(--font-display); font-size: clamp(3rem, 7vw, 6rem);
  line-height: 0.8; color: var(--fg); opacity: 0.14;
}
.chapter-cap { display: inline-flex; align-items: baseline; gap: 14px; }
.chapter-cap .script { color: var(--accent); font-size: clamp(1.6rem,3vw,2.6rem); }

/* ---------------- FOOTER ---------------- */
#footer { background: var(--ink); color: var(--paper); position: relative; z-index: var(--z-content); }