/* ============================================================
   DreamLab Institute
   Scientific editorial · warm paper · pine + copper
   Fraunces (display) / Hanken Grotesk (body)
   ============================================================ */

:root {
  --paper:      #f6f2e9;
  --paper-2:    #efe9db;
  --ink:        #1c2420;
  --ink-soft:   #4a544c;
  --pine:       #1f3d31;
  --pine-deep:  #15291f;
  --moss:       #3c6b54;
  --copper:     #b56a38;
  --copper-lt:  #c98a5d;
  --line:       rgba(28, 36, 32, 0.14);
  --line-soft:  rgba(28, 36, 32, 0.08);

  --serif: "Fraunces", Georgia, serif;
  --sans:  "Hanken Grotesk", system-ui, sans-serif;

  --maxw: 1180px;
  --pad: clamp(1.25rem, 5vw, 4rem);
  --r: 14px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  font-size: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* subtle paper grain */
  background-image:
    radial-gradient(rgba(28,36,32,0.022) 1px, transparent 1px);
  background-size: 3px 3px;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

em { font-style: italic; color: var(--moss); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 0.8em 1.45em;
  border-radius: 100px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .25s cubic-bezier(.2,.8,.2,1), background .25s, color .25s, border-color .25s, box-shadow .25s;
}
.btn--solid {
  background: var(--pine);
  color: var(--paper);
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}
.btn--solid:hover { background: var(--pine-deep); transform: translateY(-2px); box-shadow: 0 10px 24px -12px rgba(21,41,31,.6); }
.btn--ghost {
  background: transparent;
  color: var(--pine);
  border-color: var(--line);
}
.btn--ghost:hover { border-color: var(--pine); transform: translateY(-2px); }
.btn--lg { font-size: 1.05rem; padding: 0.95em 1.7em; }

/* ───────────────── NAV ───────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem var(--pad);
  background: color-mix(in srgb, var(--paper) 82%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line-soft);
}
.nav__brand { display: flex; align-items: center; gap: 0.6rem; }
.nav__mark {
  width: 22px; height: 22px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, transparent 0 3px, var(--copper) 3px 4.5px, transparent 4.5px),
    radial-gradient(circle at 50% 50%, transparent 0 7px, var(--moss) 7px 8.5px, transparent 8.5px),
    radial-gradient(circle at 50% 50%, transparent 0 10px, var(--pine) 10px 11px, transparent 11px);
}
.nav__wordmark {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.18rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.nav__wordmark-thin { font-weight: 400; font-style: italic; color: var(--ink-soft); }
.nav__links { display: flex; align-items: center; gap: clamp(1rem, 2.4vw, 2.2rem); }
.nav__links a {
  font-weight: 500;
  font-size: 0.94rem;
  color: var(--ink-soft);
  transition: color .2s;
  position: relative;
}
.nav__links a:hover { color: var(--ink); }
.nav__ext {
  color: var(--pine) !important;
  font-weight: 600 !important;
}
@media (max-width: 620px) {
  .nav__links a:not(.nav__ext) { display: none; }
}

/* ───────────────── HERO ───────────────── */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 11vh, 8.5rem) var(--pad) clamp(3.5rem, 8vh, 6rem);
  background:
    linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
}
.hero__topo {
  position: absolute;
  inset: 0;
  color: var(--moss);
  opacity: 0.22;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 35%, #000 70%, transparent);
          mask-image: linear-gradient(180deg, transparent, #000 35%, #000 70%, transparent);
}
.hero__topo svg { width: 100%; height: 100%; }
.hero__inner {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
}
.hero__eyebrow {
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 1.4rem;
}
.hero__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.6rem, 1.4rem + 5.4vw, 5.6rem);
  line-height: 1.02;
  letter-spacing: -0.022em;
  margin: 0 0 1.6rem;
  max-width: 17ch;
  font-variation-settings: "opsz" 90;
}
.hero__title em { display: inline; }
.hero__lede {
  font-size: clamp(1.06rem, 1rem + 0.4vw, 1.28rem);
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 0 2.2rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.6rem; }
.hero__loc {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1rem;
  color: var(--moss);
  margin: 0;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
  max-width: 40ch;
}

/* ───────────────── STANCE ───────────────── */
.stance {
  padding: clamp(3.5rem, 9vh, 6.5rem) var(--pad);
  background: var(--pine);
  color: var(--paper);
}
.stance__grid {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.4rem;
}
.stance__kicker {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper-lt);
  margin: 0;
}
.stance__statement {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 1.1rem + 1.8vw, 2.5rem);
  line-height: 1.28;
  letter-spacing: -0.015em;
  margin: 0;
  max-width: 24ch;
}
.stance__statement em { color: var(--copper-lt); font-style: italic; }
@media (min-width: 860px) {
  .stance__grid { grid-template-columns: 0.3fr 1fr; align-items: start; }
  .stance__statement { max-width: 30ch; }
}

/* ───────────────── SECTION HEAD ───────────────── */
.section-head { max-width: var(--maxw); margin: 0 auto clamp(2.2rem, 5vw, 3.6rem); }
.section-head__kicker {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 0.9rem;
}
.section-head__kicker--light { color: var(--copper-lt); }
.section-head__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.9rem, 1.3rem + 2.6vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  max-width: 18ch;
}
.section-head__sub {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 60ch;
  margin: 0;
}

/* ───────────────── RESEARCH CARDS ───────────────── */
.research { padding: clamp(4rem, 9vh, 7rem) var(--pad); }
.cards {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}
.card {
  position: relative;
  background: var(--paper-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  padding: 2rem 1.8rem 1.9rem;
  transition: transform .35s cubic-bezier(.2,.8,.2,1), box-shadow .35s, border-color .35s;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--copper);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform .4s cubic-bezier(.2,.8,.2,1);
}
.card:hover { transform: translateY(-5px); box-shadow: 0 24px 50px -28px rgba(21,41,31,.45); border-color: var(--line); }
.card:hover::before { transform: scaleY(1); }
.card__index {
  font-family: var(--serif);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--copper);
  display: block;
  margin-bottom: 0.9rem;
}
.card__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.5rem;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 0.8rem;
}
.card__body { color: var(--ink-soft); margin: 0 0 1.3rem; font-size: 1.01rem; }
.card__q {
  list-style: none;
  margin: 0;
  padding: 1.1rem 0 0;
  border-top: 1px dashed var(--line);
  display: grid;
  gap: 0.6rem;
}
.card__q li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.94rem;
  color: var(--ink);
}
.card__q li::before {
  content: "?";
  position: absolute;
  left: 0;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 600;
  color: var(--moss);
}

/* ───────────────── STUDIES ───────────────── */
.studies {
  padding: clamp(4rem, 9vh, 7rem) var(--pad);
  background: var(--paper-2);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.study-list {
  max-width: var(--maxw);
  margin: 0 auto;
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0;
}
.study {
  display: grid;
  gap: 0.5rem 2rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  grid-template-columns: 1fr;
  transition: padding-left .3s;
}
.study:last-child { border-bottom: 1px solid var(--line); }
.study:hover { padding-left: 0.6rem; }
.study__status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  width: fit-content;
}
.study__status span {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ink-soft);
}
.study__status[data-state="scoping"] span { background: var(--copper); }
.study__status[data-state="design"] span { background: var(--moss); }
.study__status[data-state="recruiting"] span { background: #c9a23a; }
.study__status[data-state="active"] span { background: var(--pine); box-shadow: 0 0 0 3px color-mix(in srgb, var(--pine) 20%, transparent); }
.study__status[data-state="complete"] span { background: var(--ink); }
.study__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.3rem, 1rem + 1.1vw, 1.85rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
}
.study__meta {
  font-size: 0.88rem;
  color: var(--moss);
  margin: 0;
  font-weight: 500;
}
.study__desc { color: var(--ink-soft); margin: 0; max-width: 64ch; }
@media (min-width: 820px) {
  .study {
    grid-template-columns: 200px 1fr;
    align-items: start;
  }
  .study__status { grid-row: span 3; padding-top: 0.4rem; }
  .study__title, .study__meta, .study__desc { grid-column: 2; }
}

/* ───────────────── COLLABORATE ───────────────── */
.collab {
  padding: clamp(4rem, 10vh, 7.5rem) var(--pad);
  background:
    radial-gradient(120% 90% at 80% 0%, var(--moss) 0%, transparent 55%),
    var(--pine-deep);
  color: var(--paper);
}
.collab__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  gap: 2.6rem;
}
.collab__title {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2rem, 1.3rem + 3vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 1.1rem;
}
.collab__body { font-size: 1.12rem; color: color-mix(in srgb, var(--paper) 82%, transparent); max-width: 52ch; margin: 0; }
.collab__offer {
  background: color-mix(in srgb, var(--paper) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--paper) 16%, transparent);
  border-radius: var(--r);
  padding: 2.2rem 2rem;
}
.collab__offer-title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.25rem;
  margin: 0 0 1.2rem;
  color: var(--copper-lt);
}
.collab__list {
  list-style: none;
  margin: 0 0 1.8rem;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}
.collab__list li {
  position: relative;
  padding-left: 1.7rem;
  color: color-mix(in srgb, var(--paper) 88%, transparent);
  font-size: 0.98rem;
}
.collab__list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--copper-lt);
  font-weight: 700;
}
.collab__offer .btn--solid { background: var(--copper); }
.collab__offer .btn--solid:hover { background: var(--copper-lt); box-shadow: 0 12px 28px -14px rgba(181,106,56,.7); }
.collab__note {
  font-size: 0.86rem;
  color: color-mix(in srgb, var(--paper) 60%, transparent);
  margin: 1.1rem 0 0;
  max-width: 46ch;
}
@media (min-width: 900px) {
  .collab__inner { grid-template-columns: 1fr 1fr; gap: 3.5rem; align-items: center; }
}

/* ───────────────── CLINIC ───────────────── */
.clinic { padding: clamp(3rem, 7vh, 5rem) var(--pad); }
.clinic__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.2rem 2.4rem;
}
.clinic__kicker {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0;
  flex-basis: 100%;
}
.clinic__line {
  font-family: var(--serif);
  font-size: clamp(1.3rem, 1rem + 1.2vw, 1.9rem);
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin: 0;
  flex: 1 1 420px;
}
.clinic__line strong { font-weight: 600; color: var(--pine); }

/* ───────────────── FOOTER ───────────────── */
.foot {
  background: var(--pine-deep);
  color: color-mix(in srgb, var(--paper) 80%, transparent);
  padding: clamp(3rem, 6vh, 4.5rem) var(--pad) 1.6rem;
}
.foot__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
}
.foot__brand { display: flex; align-items: center; gap: 0.6rem; }
.foot__brand .nav__wordmark { color: var(--paper); }
.foot__brand .nav__wordmark-thin { color: color-mix(in srgb, var(--paper) 60%, transparent); }
.foot__cols {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem;
}
.foot__h {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper-lt);
  margin: 0 0 0.9rem;
}
.foot__cols a, .foot__cols span {
  display: block;
  font-size: 0.95rem;
  color: color-mix(in srgb, var(--paper) 78%, transparent);
  margin-bottom: 0.5rem;
  transition: color .2s;
}
.foot__cols a:hover { color: var(--paper); }
.foot__bar {
  max-width: var(--maxw);
  margin: 2.8rem auto 0;
  padding-top: 1.4rem;
  border-top: 1px solid color-mix(in srgb, var(--paper) 14%, transparent);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.6rem;
  font-size: 0.84rem;
  color: color-mix(in srgb, var(--paper) 55%, transparent);
}
@media (min-width: 760px) {
  .foot__inner { grid-template-columns: 0.8fr 1.6fr; align-items: start; }
}

/* ───────────────── REVEAL ANIMATION ───────────────── */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1);
}
.reveal.is-in { opacity: 1; transform: none; }

/* hero staggered load */
.hero .reveal { transition-delay: calc(var(--i, 0) * 90ms); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}