/* =========================================================================
   components.css – layout, type helpers, header, menu, buttons, footer,
   intro, cursor, reveal system
   ========================================================================= */

/* Layout ---------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--gutter); }
.section { position: relative; z-index: 2; padding-block: var(--section); }
.section--tight { padding-block: calc(var(--section) * 0.6); }
/* Dark contrast band (process, "always included", footer) */
.section--invert {
  --ink: #0e0d0b; --ink-2: #1a1815; --ink-3: #24211d; --field: #0e0d0b;
  --text: #f2ece3; --text-muted: #a89f93; --text-dim: #8f877c;
  --accent: #e3b778; --on-accent: #16120d; --accent-soft: rgba(227, 183, 120, 0.14); --glow: rgba(227, 183, 120, 0.16);
  --line: rgba(242, 236, 227, 0.12); --line-strong: rgba(242, 236, 227, 0.24); --shadow: rgba(0, 0, 0, 0.6);
  --danger: #f09a8a;
  background: #161412; color: var(--text); color-scheme: dark;
}
main { position: relative; z-index: 2; display: block; }

/* Type helpers ---------------------------------------------------------- */
.display { font-family: var(--f-display); font-weight: 500; letter-spacing: -0.02em; }
.display em, .h-em { font-style: italic; color: var(--accent); }
.h1 { font-family: var(--f-display); font-size: var(--fs-3xl); letter-spacing: -0.025em; line-height: 0.98; }
.h2 { font-family: var(--f-display); font-size: var(--fs-2xl); letter-spacing: -0.02em; line-height: 1.02; }
.h3 { font-family: var(--f-display); font-size: var(--fs-xl); letter-spacing: -0.01em; line-height: 1.1; }
.h1 em, .h2 em, .h3 em { font-style: italic; color: var(--accent); }
.lead { font-size: var(--fs-lg); line-height: 1.6; color: var(--text-muted); max-width: 38rem; }
.muted { color: var(--text-muted); }
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--sp-3);
  font-family: var(--f-brand); font-size: var(--fs-xs); font-weight: 500;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--text-muted);
}
.eyebrow::before { content: ""; width: 2rem; height: 1px; background: currentColor; opacity: 0.6; }
.eyebrow--plain::before { display: none; }
.section-head { display: grid; gap: var(--sp-5); margin-bottom: clamp(3rem, 2rem + 4vw, 6rem); }
@media (min-width: 960px) {
  .section-head--split { grid-template-columns: 1.2fr 1fr; align-items: end; gap: var(--sp-8); }
}
.badge {
  display: inline-flex; align-items: center; gap: 0.4em; padding: 0.3em 0.8em;
  border: 1px solid var(--line-strong); border-radius: var(--r-pill);
  font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.04em; color: var(--text-muted);
  white-space: nowrap;
}
.badge--accent { border-color: color-mix(in srgb, var(--accent) 55%, transparent); color: var(--accent); }
.tags { display: flex; flex-wrap: wrap; gap: var(--sp-2); list-style: none; }
.tags li { font-size: var(--fs-xs); padding: 0.35em 0.85em; border-radius: var(--r-pill); background: var(--accent-soft); color: var(--text); }
.prose { max-width: 44rem; }
.prose > * + * { margin-top: 1.1em; }
.prose h2 { font-family: var(--f-display); font-size: var(--fs-xl); margin-top: 2.2em; }
.prose h3 { font-size: var(--fs-lg); font-weight: 600; margin-top: 1.8em; font-family: var(--f-body); }
.prose ul { padding-left: 1.2em; }
.prose li + li { margin-top: 0.4em; }
.prose a { color: var(--accent); }
.todo { background: rgba(240, 154, 138, 0.16); color: var(--danger); padding: 0 0.3em; border-radius: 4px; font-weight: 600; }

/* Header ---------------------------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: var(--z-header);
  transition: transform var(--d-med) var(--ease-out), background-color var(--d-med) var(--ease-out), border-color var(--d-med);
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(244, 239, 231, 0.82);
  -webkit-backdrop-filter: blur(14px) saturate(140%); backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
}
.site-header.is-hidden { transform: translateY(-100%); }
.site-header:focus-within { transform: none; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-5); height: 4.75rem; }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; text-decoration: none; color: var(--text); min-height: 44px; }
.brand-mark { width: 2.4rem; height: 2.4rem; flex: none; }
.brand-mark path { fill: none; stroke: currentColor; stroke-width: 12; stroke-linecap: butt; }
.brand-word { display: grid; line-height: 1; font-family: var(--f-brand); font-weight: 400; font-size: 1.15rem; letter-spacing: 0.01em; }
.brand-word small { font-size: 0.5rem; letter-spacing: 0.52em; font-weight: 400; margin-top: 0.35rem; color: var(--text-muted); }
.nav ul { display: flex; gap: clamp(1rem, 2vw, 2.25rem); list-style: none; }
.nav-link {
  position: relative; display: inline-flex; align-items: center; min-height: 44px;
  text-decoration: none; font-size: var(--fs-sm); font-weight: 500; color: var(--text-muted);
  transition: color var(--d-fast);
}
.nav-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0.7rem; height: 1px; background: var(--accent);
  transform: scaleX(0); transform-origin: right; transition: transform var(--d-med) var(--ease-out);
}
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--text); }
.nav-link:hover::after, .nav-link[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.header-actions { display: flex; align-items: center; gap: var(--sp-3); }
.lang {
  display: inline-grid; place-items: center; min-width: 44px; min-height: 44px;
  font-family: var(--f-brand); font-size: var(--fs-xs); letter-spacing: 0.14em; text-decoration: none; color: var(--text-muted);
}
.lang:hover { color: var(--text); }
.menu-toggle {
  display: none; position: relative; width: 48px; height: 48px; border: 1px solid var(--line-strong);
  border-radius: 50%; background: transparent; z-index: calc(var(--z-menu) + 1);
}
.menu-toggle span:not(.sr-only) {
  position: absolute; left: 50%; top: 50%; width: 18px; height: 1.5px; background: var(--text);
  transition: transform var(--d-med) var(--ease-out);
}
.menu-toggle span:nth-child(1) { transform: translate(-50%, -4px); }
.menu-toggle span:nth-child(2) { transform: translate(-50%, 3px); }
.menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translate(-50%, 0) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:nth-child(2) { transform: translate(-50%, 0) rotate(-45deg); }
@media (max-width: 899px) {
  .nav, .header-actions .btn { display: none; }
  .menu-toggle { display: inline-block; }
}

/* Mobile menu ----------------------------------------------------------- */
.menu {
  position: fixed; inset: 0; z-index: var(--z-menu); background: var(--ink-2);
  display: flex; flex-direction: column; padding: 6.5rem var(--gutter) 2rem; overflow-y: auto;
  clip-path: circle(0% at calc(100% - 3rem) 2.4rem);
  transition: clip-path 700ms var(--ease-in-out), visibility 0s 700ms;
  visibility: hidden;
}
.menu.is-open { clip-path: circle(150% at calc(100% - 3rem) 2.4rem); visibility: visible; transition: clip-path 800ms var(--ease-in-out); }
.menu__list { list-style: none; display: grid; gap: var(--sp-2); }
.menu-link {
  display: flex; align-items: baseline; gap: var(--sp-4); padding-block: var(--sp-2);
  font-family: var(--f-display); font-size: clamp(2.6rem, 11vw, 4.5rem); line-height: 1.05;
  text-decoration: none; color: var(--text);
  opacity: 0; transform: translateY(1.2em); transition: opacity 500ms var(--ease-out), transform 700ms var(--ease-out);
}
.menu-link[aria-current="page"] { font-style: italic; color: var(--accent); }
.menu-link small { font-family: var(--f-brand); font-size: var(--fs-xs); color: var(--text-dim); letter-spacing: 0.1em; }
.menu.is-open .menu-link { opacity: 1; transform: none; transition-delay: calc(250ms + var(--i, 0) * 60ms); }
.menu__foot { margin-top: auto; padding-top: var(--sp-7); display: grid; gap: var(--sp-4); color: var(--text-muted); font-size: var(--fs-sm); }
.menu__foot a { color: var(--text); }
body.menu-open { overflow: hidden; }

/* Buttons --------------------------------------------------------------- */
.btn {
  --btn-bg: var(--text); --btn-fg: var(--ink);
  position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 0.7em;
  min-height: 52px; padding: 0.85em 1.6em; border: 1px solid var(--btn-bg); border-radius: var(--r-pill);
  background: var(--btn-bg); color: var(--btn-fg); text-decoration: none;
  font-weight: 600; font-size: var(--fs-sm); letter-spacing: 0.01em; line-height: 1.2;
  overflow: hidden; isolation: isolate; touch-action: manipulation;
  transition: color var(--d-med) var(--ease-out), border-color var(--d-med), transform var(--d-fast);
}
.btn::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--accent); border-radius: inherit;
  transform: translateY(101%); transition: transform var(--d-med) var(--ease-out);
}
.btn:hover::before { transform: none; }
.btn:hover { color: var(--on-accent); border-color: var(--accent); }
.btn:active { transform: scale(0.97); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--text); border-color: var(--line-strong); }
.btn--sm { min-height: 44px; padding: 0.6em 1.2em; font-size: var(--fs-xs); }
.btn--lg { min-height: 64px; padding: 1em 2.2em; font-size: var(--fs-base); }
.btn__icon { width: 1.05em; height: 1.05em; transition: transform var(--d-med) var(--ease-out); }
.btn:hover .btn__icon { transform: translateX(3px) rotate(-45deg); }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.45; pointer-events: none; }
.btn.is-loading { pointer-events: none; }
.btn.is-loading .btn__label::after { content: "…"; }
[data-magnetic] { will-change: transform; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.6em; min-height: 44px;
  text-decoration: none; font-weight: 600; font-size: var(--fs-sm); color: var(--text);
}
.link-arrow svg { width: 1em; height: 1em; transition: transform var(--d-med) var(--ease-out); }
.link-arrow span { background: linear-gradient(currentColor, currentColor) 0 100% / 0 1px no-repeat; transition: background-size var(--d-med) var(--ease-out); }
.link-arrow:hover span { background-size: 100% 1px; }
.link-arrow:hover svg { transform: translateX(4px); }

/* Footer ---------------------------------------------------------------- */
.site-footer { position: relative; z-index: 2; border-top: 1px solid var(--line); padding-block: var(--sp-9) var(--sp-6); background: var(--ink); }
.footer-grid { display: grid; gap: var(--sp-7); }
@media (min-width: 800px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; } }
.footer-claim { font-family: var(--f-display); font-size: var(--fs-xl); line-height: 1.15; margin-top: var(--sp-5); max-width: 22rem; }
.footer-claim em { color: var(--accent); }
.footer-col h2 { font-family: var(--f-brand); font-size: var(--fs-xs); letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-dim); font-weight: 500; margin-bottom: var(--sp-4); }
.footer-col ul { list-style: none; display: grid; gap: var(--sp-1); }
.footer-col a { display: inline-flex; min-height: 36px; align-items: center; text-decoration: none; color: var(--text-muted); font-size: var(--fs-sm); transition: color var(--d-fast); }
.footer-col a:hover { color: var(--text); }
.footer-col p { color: var(--text-muted); font-size: var(--fs-sm); }
.footer-bottom {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--sp-4);
  margin-top: var(--sp-9); padding-top: var(--sp-5); border-top: 1px solid var(--line);
  font-size: var(--fs-xs); color: var(--text-dim);
}
.footer-bottom a { color: var(--text-muted); text-decoration: none; }
.footer-bottom a:hover { color: var(--text); }
.footer-word {
  font-family: var(--f-brand); font-weight: 300; font-size: clamp(3.5rem, 17vw, 17rem); line-height: 0.8;
  letter-spacing: -0.04em; color: transparent; -webkit-text-stroke: 1px var(--line-strong);
  margin-top: var(--sp-8); white-space: nowrap; user-select: none; text-align: center;
}

/* Intro (first visit per session) ---------------------------------------- */
.intro { display: none; }
.has-intro .intro {
  position: fixed; inset: 0; z-index: var(--z-intro); display: grid; place-items: center;
  background: var(--ink); pointer-events: none;
}
.intro svg { width: min(34vw, 150px); color: var(--text); }
.intro path { fill: none; stroke: currentColor; stroke-width: 5; stroke-dasharray: 1; stroke-dashoffset: 1; }
.intro.is-playing path { animation: draw 1000ms var(--ease-in-out) forwards; }
.intro.is-playing path:nth-child(2) { animation-delay: 250ms; }
.intro.is-leaving { transform: translateY(-100%); transition: transform 900ms var(--ease-in-out); }
@keyframes draw { to { stroke-dashoffset: 0; } }

/* Cursor label (fine pointers only) ---------------------------------------- */
.cursor {
  position: fixed; left: 0; top: 0; z-index: var(--z-cursor); pointer-events: none;
  width: 96px; height: 96px; margin: -48px 0 0 -48px; border-radius: 50%;
  display: grid; place-items: center; background: var(--accent); color: var(--on-accent);
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
  transform: translate3d(var(--cx, -200px), var(--cy, -200px), 0);
  scale: 0; transition: scale 450ms var(--ease-out);
}
.cursor.is-active { scale: 1; }

/* Reveal system (JS adds html.js; without JS everything is visible) ------- */
.js [data-reveal] {
  opacity: 0; transform: translate3d(0, 28px, 0);
  transition: opacity var(--d-slow) var(--ease-out), transform var(--d-xslow) var(--ease-out);
  transition-delay: calc(var(--i, 0) * 80ms);
}
.js [data-reveal="fade"] { transform: none; }
.js [data-reveal="mask"] { opacity: 1; transform: none; clip-path: inset(12% 6% 12% 6% round var(--r-lg)); transition: clip-path 1400ms var(--ease-out); transition-delay: calc(var(--i, 0) * 80ms); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
.js [data-reveal="mask"].is-in { clip-path: inset(0 0 0 0 round var(--r-lg)); }
.line { display: block; overflow: clip; padding-bottom: 0.08em; margin-bottom: -0.08em; }
.line > span { display: inline-block; }
.js [data-lines] .line > span { transform: translate3d(0, 110%, 0); transition: transform 1200ms var(--ease-out); transition-delay: calc(120ms + var(--i, 0) * 90ms); }
.js [data-lines].is-in .line > span { transform: none; }

/* Page load fade + cross-document view transitions (progressive) --------- */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: 380ms var(--ease-in) both vt-out; }
::view-transition-new(root) { animation: 620ms var(--ease-out) both vt-in; }
@keyframes vt-out { to { opacity: 0; transform: translateY(-12px); } }
@keyframes vt-in { from { opacity: 0; transform: translateY(18px); } }