/* ============================================================
   Hello Momentum — Studio Index
   Swiss-editorial. Grotesque-led. Paper & Pine.
   Type: Clash Display (display/logo) + Switzer (text)
   ============================================================ */

/* ---------- Fonts (self-hosted) ---------- */
@font-face { font-family:"Clash Display"; src:url("fonts/clash-display-500.woff2") format("woff2"); font-weight:500; font-style:normal; font-display:swap; }
@font-face { font-family:"Clash Display"; src:url("fonts/clash-display-600.woff2") format("woff2"); font-weight:600; font-style:normal; font-display:swap; }
@font-face { font-family:"Clash Display"; src:url("fonts/clash-display-700.woff2") format("woff2"); font-weight:700; font-style:normal; font-display:swap; }
@font-face { font-family:"Switzer"; src:url("fonts/switzer-400.woff2") format("woff2"); font-weight:400; font-style:normal; font-display:swap; }
@font-face { font-family:"Switzer"; src:url("fonts/switzer-500.woff2") format("woff2"); font-weight:500; font-style:normal; font-display:swap; }
@font-face { font-family:"Switzer"; src:url("fonts/switzer-600.woff2") format("woff2"); font-weight:600; font-style:normal; font-display:swap; }

/* ---------- Tokens ---------- */
:root {
  --paper:    oklch(0.966 0.004 100);
  --paper-2:  oklch(0.938 0.006 100);
  --ink:      oklch(0.198 0.012 150);
  --ink-2:    oklch(0.158 0.013 152);
  --ink-soft: oklch(0.402 0.012 150);
  --grey:     oklch(0.560 0.009 130);
  --grey-2:   oklch(0.760 0.006 115);
  --pine:     oklch(0.420 0.060 158);
  --pine-bright: oklch(0.620 0.085 156);
  --line:     oklch(0.852 0.006 100);
  --line-2:   oklch(0.905 0.005 100);
  --on-ink:      oklch(0.945 0.006 100);
  --on-ink-soft: oklch(0.730 0.010 125);
  --on-ink-line: oklch(0.945 0.006 100 / 0.16);

  --font-display: "Clash Display", "Helvetica Neue", Arial, sans-serif;
  --font-text: "Switzer", "Helvetica Neue", Arial, sans-serif;

  --maxw: 88rem;
  --gutter: clamp(1.25rem, 4.5vw, 4rem);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--font-text); font-size: clamp(1rem, 0.97rem + 0.16vw, 1.075rem);
  line-height: 1.6; font-weight: 400;
  font-feature-settings: "ss01", "cv01";
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
}
::selection { background: var(--pine); color: var(--paper); }
/* paper grain */
body::after {
  content: ""; position: fixed; inset: 0; z-index: 1; pointer-events: none;
  opacity: 0.04; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.82' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
img { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 600; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }

/* ---------- Layout ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gutter); }
.visually-hidden, .skip-link:not(:focus) {
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip:rect(0 0 0 0); white-space:nowrap; border:0;
}
.skip-link { position:fixed; top:0.6rem; left:0.6rem; z-index:100; background:var(--ink); color:var(--paper); padding:0.55rem 0.9rem; text-decoration:none; font-size:0.85rem; }
:focus-visible { outline: 2px solid var(--pine); outline-offset: 3px; }

/* small caps label */
.lbl { font-family: var(--font-text); font-size: 0.72rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; font-variant-numeric: tabular-nums; }
.lbl--pine { color: var(--pine); }
.lbl--grey { color: var(--grey); }

/* ---------- Masthead ---------- */
.masthead { position: sticky; top: 0; z-index: 30; background: oklch(from var(--paper) l c h / 0.86); backdrop-filter: saturate(150%) blur(10px); border-bottom: 1px solid var(--ink); }
.masthead__bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: 0.95rem; }
.logo { font-family: var(--font-display); font-weight: 600; font-size: 1.18rem; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; white-space: nowrap; }
.logo:hover { color: var(--pine); }
.nav { display: flex; align-items: center; gap: clamp(1.1rem, 2.2vw, 2.1rem); }
.nav a { font-family: var(--font-text); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); text-decoration: none; transition: color 0.2s var(--ease); }
.nav a:hover, .nav a.is-current { color: var(--pine); }
.nav__cta { color: var(--ink) !important; position: relative; }
.nav__cta::after { content:""; position:absolute; left:0; right:0; bottom:-3px; height:1px; background: var(--pine); transform: scaleX(0); transform-origin: left; transition: transform 0.3s var(--ease); }
.nav__cta:hover::after, .nav__cta.is-current::after { transform: scaleX(1); }
.nav__toggle { display: none; }

/* running head */
.runhead { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.runhead span {
  padding: 0.7rem clamp(0.5rem, 1.5vw, 1rem); border-left: 1px solid var(--line);
  font-family: var(--font-text); font-size: 0.68rem; font-weight: 500; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-soft); white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  font-variant-numeric: tabular-nums;
}
.runhead span:first-child { border-left: 0; padding-left: 0; }
.runhead span:last-child { color: var(--pine); }

/* ---------- Cover ---------- */
.cover { padding-block: clamp(3rem, 7vw, 6.5rem) clamp(3.5rem, 8vw, 7rem); }
.cover__folio { display: flex; gap: 1rem; margin-bottom: clamp(1.6rem, 4vw, 2.6rem); }
.cover__title {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(2.9rem, 1rem + 8.4vw, 8.2rem); line-height: 0.94; letter-spacing: -0.035em;
  color: var(--ink); max-width: 15ch; text-wrap: balance;
}
.cover__rule { height: 1px; background: var(--ink); margin-block: clamp(2.2rem, 5vw, 3.8rem); }
.cover__row { display: grid; grid-template-columns: 1fr; gap: 2.4rem; }
.cover__lead { font-size: clamp(1.12rem, 1rem + 0.6vw, 1.4rem); line-height: 1.5; color: var(--ink-soft); max-width: 42ch; text-wrap: pretty; }
.cover__actions { display: flex; align-items: center; flex-wrap: wrap; gap: 1.4rem; margin-top: 1.8rem; }
.cover__tag { font-size: 0.84rem; font-weight: 500; color: var(--grey); }
.cover__index { display: flex; flex-direction: column; }
.cover__index-h { margin-bottom: 0.4rem; }
.cover__index a {
  display: flex; align-items: baseline; gap: 0.9rem; padding-block: 0.6rem; border-top: 1px solid var(--line);
  font-family: var(--font-text); font-weight: 500; font-size: 0.96rem; color: var(--ink-soft); text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.25s var(--ease);
}
.cover__index a:last-child { border-bottom: 1px solid var(--line); }
.cover__index a:hover { color: var(--pine); padding-left: 0.4rem; }
.ci-num { font-size: 0.72rem; color: var(--pine); font-variant-numeric: tabular-nums; }
@media (min-width: 880px) {
  .cover__row { grid-template-columns: 1.25fr 0.75fr; gap: clamp(2.5rem, 6vw, 6rem); align-items: start; }
}

/* ---------- Buttons / links ---------- */
.btn { display: inline-flex; align-items: center; gap: 0.55rem; background: var(--ink); color: var(--paper); font-family: var(--font-text); font-size: 0.88rem; font-weight: 600; letter-spacing: 0.01em; padding: 0.9rem 1.35rem; border-radius: 2px; text-decoration: none; transition: background 0.25s var(--ease), transform 0.25s var(--ease); }
.btn:hover { background: var(--pine); transform: translateY(-1px); }
.btn .arw, .link .arw { transition: transform 0.25s var(--ease); }
.btn:hover .arw, .link:hover .arw { transform: translateX(3px); }
.link { display: inline-flex; align-items: center; gap: 0.5rem; font-family: var(--font-text); font-weight: 600; font-size: 0.9rem; color: var(--ink); text-decoration: none; }
.link span.u { border-bottom: 1px solid var(--pine); padding-bottom: 2px; }

/* ---------- Marquee ---------- */
.marquee { width: 100%; border-block: 1px solid var(--ink); overflow: hidden; padding-block: 0.85rem; }
.marquee__track { display: flex; align-items: center; width: max-content; animation: marq 42s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee span { font-family: var(--font-text); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); padding-inline: 1.5rem; white-space: nowrap; }
.marquee b { color: var(--pine); font-size: 0.6rem; }
@keyframes marq { to { transform: translateX(-50%); } }

/* ---------- Section head ---------- */
.sec { padding-block: clamp(3.5rem, 8vw, 7rem); }
.sec-head { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem 2rem; flex-wrap: wrap; padding-bottom: clamp(1.4rem, 3vw, 2.2rem); border-bottom: 1px solid var(--ink); }
.sec-head__left { display: flex; align-items: baseline; gap: clamp(1rem, 3vw, 2.2rem); }
.sec-head__title { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.6rem, 1rem + 2.1vw, 2.7rem); letter-spacing: -0.025em; }

/* ---------- Work ---------- */
.work-list { display: grid; gap: clamp(3.2rem, 7vw, 6rem); margin-top: clamp(2.4rem, 5vw, 4rem); }
.work-entry { display: grid; grid-template-columns: 1fr; gap: 1.4rem; }
.work-fig { margin: 0; }
.work-frame { display: block; position: relative; overflow: hidden; border: 1px solid var(--line); background: var(--paper-2); aspect-ratio: 16 / 10; }
.work-frame img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform 0.7s var(--ease); }
.work-entry:hover .work-frame img, .work-entry:focus-within .work-frame img { transform: scale(1.03); }
.work-figcap { margin-top: 0.65rem; font-family: var(--font-text); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey); font-variant-numeric: tabular-nums; }
.work-cap { position: relative; }
.work-num { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.1rem, 1rem + 0.8vw, 1.6rem); color: var(--pine); font-variant-numeric: tabular-nums; }
.work-name { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.7rem, 1rem + 2vw, 2.6rem); letter-spacing: -0.025em; margin-top: 0.5rem; line-height: 1.02; }
.work-desc { color: var(--ink-soft); margin-top: 0.9rem; max-width: 40ch; text-wrap: pretty; }
.work-credits { display: flex; flex-wrap: wrap; gap: 0.4rem 0; margin-top: 1.3rem; }
.work-credits span { font-family: var(--font-text); font-size: 0.7rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey); padding-inline: 0.8rem; border-left: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.work-credits span:first-child { padding-left: 0; border-left: 0; }
.work-visit { margin-top: 1.5rem; }
@media (min-width: 900px) {
  .work-entry { grid-template-columns: 1.05fr 0.95fr; gap: clamp(2rem, 4.5vw, 4.5rem); align-items: center; }
  .work-entry--flip .work-fig { order: 2; }
}

/* cursor-follow label on work frames (fine pointer only) */
.wcursor {
  position: fixed; top: 0; left: 0; z-index: 40; pointer-events: none;
  background: var(--pine); color: var(--paper); font-family: var(--font-text); font-weight: 600;
  font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.6rem 0.85rem;
  border-radius: 999px; white-space: nowrap; opacity: 0;
  transition: opacity 0.2s var(--ease), scale 0.25s var(--ease); scale: 0.6;
}
.wcursor[data-show] { opacity: 1; scale: 1; }

/* ---------- Studio (dark spread) ---------- */
.studio { background: var(--ink-2); color: var(--on-ink); padding-block: clamp(5rem, 11vw, 9.5rem); }
.studio__folio { margin-bottom: clamp(2rem, 5vw, 3.2rem); }
.studio__folio .lbl--pine { color: var(--pine-bright); }
.studio__quote { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.85rem, 1rem + 3.6vw, 3.7rem); line-height: 1.12; letter-spacing: -0.02em; max-width: 19ch; text-wrap: balance; }
.studio__body { margin-top: clamp(2rem, 4vw, 2.8rem); max-width: 52ch; color: var(--on-ink-soft); font-size: clamp(1.02rem, 1rem + 0.3vw, 1.18rem); line-height: 1.6; text-wrap: pretty; }

/* ---------- Capabilities ---------- */
.cap-table { margin-top: clamp(2.2rem, 5vw, 3.6rem); }
.cap-row { display: grid; grid-template-columns: 2.5rem 1fr; gap: 0.35rem 1.4rem; padding-block: clamp(1.5rem, 3vw, 2.2rem); border-top: 1px solid var(--line); }
.cap-row:last-child { border-bottom: 1px solid var(--line); }
.cap-num { font-family: var(--font-display); font-weight: 500; font-size: 0.95rem; color: var(--pine); font-variant-numeric: tabular-nums; }
.cap-name { font-family: var(--font-display); font-weight: 600; font-size: clamp(1.35rem, 1rem + 1.3vw, 2rem); letter-spacing: -0.02em; }
.cap-desc { grid-column: 2; color: var(--ink-soft); max-width: 52ch; text-wrap: pretty; }
.cap-deliver { grid-column: 2; margin-top: 0.7rem; font-family: var(--font-text); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey); }
@media (min-width: 880px) {
  .cap-row { grid-template-columns: 3rem 17rem 1fr 15rem; gap: 2rem; align-items: baseline; }
  .cap-desc { grid-column: 3; }
  .cap-deliver { grid-column: 4; grid-row: 1; margin-top: 0; text-align: right; }
}

/* ---------- Principles ---------- */
.prin-grid { display: grid; gap: clamp(2.4rem, 5vw, 4rem); margin-top: clamp(2.2rem, 5vw, 3.6rem); }
.rules li { padding-block: 1.3rem; border-top: 1px solid var(--line); color: var(--ink-soft); }
.rules li:last-child { border-bottom: 1px solid var(--line); }
.rules b { display: block; color: var(--ink); font-weight: 600; margin-bottom: 0.3rem; font-size: 1.05rem; }
.nots__head { margin-bottom: 1.2rem; }
.nots li { display: flex; gap: 0.7rem; padding-block: 0.5rem; color: var(--ink-soft); font-size: 0.98rem; }
.nots li i { font-style: normal; color: var(--pine); font-weight: 600; flex: none; }
@media (min-width: 880px) { .prin-grid { grid-template-columns: 1.2fr 0.8fr; gap: clamp(3rem, 6vw, 6rem); } }

/* ---------- Colophon ---------- */
.colophon { background: var(--ink-2); color: var(--on-ink); padding-block: clamp(4rem, 9vw, 7rem) 0; overflow: hidden; }
.colophon__cta { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 1.8rem; padding-bottom: clamp(2.8rem, 6vw, 4.5rem); border-bottom: 1px solid var(--on-ink-line); }
.colophon__cta .lbl--pine { color: var(--pine-bright); margin-bottom: 1rem; display: block; }
.colophon__mail { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.9rem, 1rem + 3.2vw, 3.6rem); letter-spacing: -0.025em; color: var(--on-ink); text-decoration: none; }
.colophon__mail span { border-bottom: 1px solid transparent; transition: border-color 0.25s var(--ease); padding-bottom: 3px; }
.colophon__mail:hover span { border-color: var(--pine-bright); }
.colophon__note { max-width: 26ch; color: var(--on-ink-soft); font-size: 0.98rem; text-wrap: pretty; }
.colophon__grid { margin-top: clamp(2.6rem, 5vw, 4rem); display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.6rem 2rem; align-items: start; }
.colo-item .lbl { color: var(--pine-bright); display: block; margin-bottom: 0.5rem; }
.colo-item p, .colo-item a { color: var(--on-ink-soft); font-size: 0.92rem; text-decoration: none; }
.colo-item a:hover { color: var(--on-ink); }
.colo-item .name { font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; color: var(--on-ink); }
.totop { justify-self: start; display: inline-flex; align-items: center; gap: 0.4rem; color: var(--on-ink-soft); text-decoration: none; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.totop:hover { color: var(--pine-bright); }
.endmark { margin-top: clamp(2.5rem, 6vw, 4.5rem); font-family: var(--font-display); font-weight: 600; font-size: clamp(3.4rem, 16vw, 15rem); line-height: 0.82; letter-spacing: -0.04em; color: var(--on-ink); white-space: nowrap; transform: translateY(0.14em); }
@media (min-width: 760px) { .colophon__grid { grid-template-columns: repeat(4, 1fr) auto; } .totop { justify-self: end; } }

/* ---------- Load reveal (cover only) ---------- */
@media (prefers-reduced-motion: no-preference) {
  .rise { opacity: 0; transform: translateY(14px); animation: rise 0.85s var(--ease) forwards; }
  .rise-1 { animation-delay: 0.05s; } .rise-2 { animation-delay: 0.16s; }
  .rise-3 { animation-delay: 0.27s; } .rise-4 { animation-delay: 0.38s; } .rise-5 { animation-delay: 0.49s; }
  @keyframes rise { to { opacity: 1; transform: none; } }
}

/* ---------- Mobile nav ---------- */
@media (max-width: 760px) {
  .runhead { grid-template-columns: repeat(2, 1fr); }
  .runhead span:nth-child(3), .runhead span:nth-child(4) { border-top: 1px solid var(--line); }
  .runhead span:nth-child(3) { border-left: 0; padding-left: 0; }
  .nav__toggle {
    display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px;
    background: none; border: none; cursor: pointer; position: relative; color: var(--ink);
  }
  .nav__toggle-bar, .nav__toggle-bar::before, .nav__toggle-bar::after {
    content: ""; display: block; width: 22px; height: 2px; background: currentColor; border-radius: 1px;
    transition: transform 0.3s var(--ease), opacity 0.2s var(--ease);
  }
  .nav__toggle-bar { position: relative; }
  .nav__toggle-bar::before { position: absolute; top: -7px; left: 0; }
  .nav__toggle-bar::after { position: absolute; top: 7px; left: 0; }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bar { background: transparent; }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bar::before { transform: translateY(7px) rotate(45deg); }
  .nav__toggle[aria-expanded="true"] .nav__toggle-bar::after { transform: translateY(-7px) rotate(-45deg); }
  .nav {
    position: absolute; inset: 100% 0 auto 0; flex-direction: column; align-items: flex-start; gap: 0.1rem;
    background: var(--paper); border-bottom: 1px solid var(--ink); padding-inline: var(--gutter);
    max-height: 0; overflow: hidden; opacity: 0; padding-block: 0;
    transition: max-height 0.35s var(--ease), opacity 0.25s var(--ease), padding 0.35s var(--ease);
  }
  .nav[data-open] { max-height: 70vh; opacity: 1; padding-block: 0.8rem 1.4rem; }
  .nav a { display: block; padding: 0.6rem 0; font-size: 0.95rem; }
  .endmark { font-size: 23vw; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .marquee__track { animation: none; transform: none; }
  .work-frame img { transition: none; }
}