/* =====================================================================
   VALENS — consultancy site
   Design system: clinical-premium. Deep forest/teal + warm gold accent,
   Fraunces (display serif) + Inter (sans). Fluid, accessible, no frameworks.
   ===================================================================== */

:root {
  --bg:        #f6f4ef;   /* warm paper */
  --bg-soft:   #efece4;
  --ink:       #14201b;   /* near-black green */
  --ink-soft:  #45524c;
  --line:      #e0dccf;

  --dark:      #0a1310;   /* deep forest */
  --dark-2:    #0f1b16;
  --on-dark:   #e8efe9;
  --on-dark-soft: #9fb1a7;

  --teal:      #167a6b;
  --teal-bright:#1fae97;
  --gold:      #c79a3e;
  --gold-soft: #e3c275;

  --radius:    18px;
  --radius-sm: 12px;
  --maxw:      1180px;
  --shadow:    0 1px 2px rgba(20,32,27,.04), 0 12px 32px -12px rgba(20,32,27,.18);
  --shadow-lg: 0 30px 70px -24px rgba(10,19,16,.45);

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img,svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1,h2,h3 { font-family: "Fraunces", Georgia, serif; font-weight: 500; line-height: 1.08; letter-spacing: -0.015em; }
em { font-style: italic; }

.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: var(--ink); color: var(--on-dark); padding: .6rem 1rem; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* ---------- buttons ---------- */
.btn {
  --pad-y: .85rem; --pad-x: 1.5rem;
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: var(--pad-y) var(--pad-x);
  border-radius: 100px; font-weight: 600; font-size: .95rem;
  border: 1.5px solid transparent; cursor: pointer;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, color .25s, border-color .25s;
  white-space: nowrap;
}
.btn--sm { --pad-y: .55rem; --pad-x: 1.05rem; font-size: .88rem; }
.btn--lg { --pad-y: 1.05rem; --pad-x: 2rem; font-size: 1.02rem; }
.btn--primary { background: var(--ink); color: var(--on-dark); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); background: var(--teal); }
.btn--ghost { border-color: currentColor; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: var(--on-dark); border-color: var(--ink); transform: translateY(-2px); }

/* ---------- nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  transition: background .3s, box-shadow .3s, border-color .3s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(150%) blur(14px);
  border-bottom-color: var(--line);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand { display: inline-flex; align-items: center; gap: .6rem; font-weight: 700; letter-spacing: .14em; font-size: 1.02rem; color: var(--ink); }
.brand__mark { color: var(--teal); display: inline-flex; }
.nav__links { display: flex; align-items: center; gap: 1.9rem; }
.nav__links a { font-size: .95rem; font-weight: 500; color: var(--ink-soft); transition: color .2s; }
.nav__links a:hover { color: var(--ink); }
.nav__links .btn { color: var(--ink); }
.nav__toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; padding: 8px; cursor: pointer; }
.nav__toggle span { width: 24px; height: 2px; background: var(--ink); transition: .3s var(--ease); border-radius: 2px; }
.nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__toggle span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- hero ---------- */
.hero { position: relative; padding: clamp(8rem, 16vh, 12rem) 0 clamp(4rem, 9vh, 7rem); overflow: hidden; }
.hero__bg {
  position: absolute; inset: -20% -10% auto; height: 130%; z-index: -1;
  background:
    radial-gradient(60% 55% at 18% 12%, rgba(31,174,151,.20), transparent 60%),
    radial-gradient(50% 50% at 88% 8%, rgba(199,154,62,.18), transparent 55%),
    radial-gradient(60% 60% at 70% 95%, rgba(22,122,107,.12), transparent 60%);
  filter: blur(8px);
  animation: drift 22s var(--ease) infinite alternate;
}
@keyframes drift { to { transform: translate3d(-3%, 2%, 0) scale(1.06); } }
.eyebrow {
  text-transform: uppercase; letter-spacing: .22em; font-size: .76rem; font-weight: 600;
  color: var(--teal); margin-bottom: 1.1rem;
}
.hero__title { font-size: clamp(2.6rem, 6.4vw, 5rem); max-width: 16ch; }
.grad {
  background: linear-gradient(100deg, var(--teal) 10%, var(--teal-bright) 50%, var(--gold) 110%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero__lede { margin-top: 1.6rem; font-size: clamp(1.05rem, 1.7vw, 1.3rem); color: var(--ink-soft); max-width: 56ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.4rem; }
.hero__stats { display: flex; flex-wrap: wrap; gap: clamp(2rem, 6vw, 4.5rem); margin-top: 3.6rem; padding-top: 2.2rem; border-top: 1px solid var(--line); }
.hero__stats dt { font-family: "Fraunces", serif; font-size: clamp(1.8rem, 3.5vw, 2.6rem); color: var(--ink); line-height: 1; }
.hero__stats dd { margin-top: .4rem; font-size: .88rem; color: var(--ink-soft); max-width: 18ch; }

/* ---------- marquee ---------- */
.marquee { background: var(--ink); color: var(--on-dark-soft); padding: 1rem 0; overflow: hidden; }
.marquee__track { display: inline-flex; gap: 1.4rem; white-space: nowrap; animation: scroll 38s linear infinite; font-weight: 500; font-size: .95rem; letter-spacing: .02em; will-change: transform; }
.marquee__track span:nth-child(even) { color: var(--gold-soft); }
@keyframes scroll { to { transform: translateX(-50%); } }
.marquee:hover .marquee__track { animation-play-state: paused; }

/* ---------- sections ---------- */
.section { padding: clamp(4.5rem, 10vh, 8rem) 0; }
.section--alt { background: var(--bg-soft); }
.section__head { max-width: 60ch; margin-bottom: 3.2rem; }
.section__head h2 { font-size: clamp(2rem, 4vw, 3.1rem); margin-top: .8rem; }
.section__sub { margin-top: 1.1rem; color: var(--ink-soft); font-size: 1.08rem; }

/* ---------- grids / cards ---------- */
.grid { display: grid; gap: 1.4rem; }
.grid--cards { grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 2rem 1.9rem; box-shadow: var(--shadow);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  position: relative; overflow: hidden;
}
.card::after {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 3px;
  background: linear-gradient(90deg, var(--teal), var(--gold)); transform: scaleX(0); transform-origin: left;
  transition: transform .4s var(--ease);
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card:hover::after { transform: scaleX(1); }
.card--accent { background: linear-gradient(165deg, var(--dark), var(--dark-2)); color: var(--on-dark); border-color: transparent; }
.card--accent p { color: var(--on-dark-soft); }
.card--accent .card__list li { color: var(--on-dark-soft); border-color: rgba(255,255,255,.1); }
.card__icon { font-size: 1.7rem; width: 56px; height: 56px; display: grid; place-items: center; background: var(--bg-soft); border-radius: 14px; margin-bottom: 1.2rem; }
.card--accent .card__icon { background: rgba(255,255,255,.08); }
.card h3 { font-size: 1.35rem; margin-bottom: .6rem; }
.card p { color: var(--ink-soft); font-size: .98rem; }
.card__list { list-style: none; margin-top: 1.2rem; }
.card__list li { font-size: .9rem; color: var(--ink-soft); padding: .55rem 0 .55rem 1.5rem; border-top: 1px solid var(--line); position: relative; }
.card__list li::before { content: "→"; position: absolute; left: 0; color: var(--teal); font-weight: 700; }

/* ---------- steps ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 1.5rem; counter-reset: step; }
.step { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 2rem 1.7rem; position: relative; }
.section--alt .step { background: var(--bg); }
.step__num { font-family: "Fraunces", serif; font-size: 2.4rem; color: var(--gold); display: block; margin-bottom: .6rem; line-height: 1; }
.step h3 { font-size: 1.25rem; margin-bottom: .5rem; }
.step p { color: var(--ink-soft); font-size: .96rem; }

/* ---------- why ---------- */
.why { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(2rem,5vw,4.5rem); align-items: center; }
.why__lead h2 { font-size: clamp(1.9rem, 3.6vw, 2.9rem); margin: .8rem 0 1.2rem; }
.why__lead p { color: var(--ink-soft); font-size: 1.08rem; margin-bottom: 1.8rem; }
.why__list { list-style: none; display: grid; gap: 1rem; }
.why__list li { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 1.3rem 1.5rem; font-size: 1rem; color: var(--ink-soft); box-shadow: var(--shadow); }
.why__list strong { color: var(--ink); font-weight: 600; }

/* ---------- band ---------- */
.band { background: linear-gradient(160deg, var(--dark), var(--dark-2)); color: var(--on-dark); padding: clamp(3rem,7vh,5rem) 0; }
.band__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 2rem; text-align: center; }
.band__num { font-family: "Fraunces", serif; font-size: clamp(2.4rem,5vw,3.4rem); display: block; background: linear-gradient(100deg, var(--teal-bright), var(--gold-soft)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.band__label { color: var(--on-dark-soft); font-size: .92rem; margin-top: .4rem; display: block; }

/* ---------- pills ---------- */
.grid--pills { grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); }
.pill { background: #fff; border: 1px solid var(--line); border-radius: 100px; padding: 1.1rem 1.6rem; font-weight: 500; text-align: center; transition: transform .3s var(--ease), border-color .3s, color .3s; }
.section--alt .pill { background: var(--bg); }
.pill:hover { transform: translateY(-3px); border-color: var(--teal); color: var(--teal); }

/* ---------- quote ---------- */
.quote { max-width: 60ch; margin-inline: auto; text-align: center; }
.quote blockquote { font-family: "Fraunces", serif; font-size: clamp(1.5rem, 3.2vw, 2.3rem); line-height: 1.3; color: var(--ink); }
.quote blockquote::before { content: "\201C"; color: var(--gold); }
.quote figcaption { margin-top: 1.4rem; color: var(--ink-soft); font-size: .9rem; }

/* ---------- cta ---------- */
.cta { background: linear-gradient(155deg, var(--dark), #08110d 70%); color: var(--on-dark); padding: clamp(4.5rem,10vh,8rem) 0; position: relative; overflow: hidden; }
.cta::before { content: ""; position: absolute; inset: auto -10% -40% auto; width: 60%; height: 80%; background: radial-gradient(circle, rgba(31,174,151,.22), transparent 65%); }
.cta__inner { position: relative; text-align: center; max-width: 60ch; margin-inline: auto; }
.cta h2 { font-size: clamp(2rem, 4.5vw, 3.4rem); }
.cta p { color: var(--on-dark-soft); font-size: 1.12rem; margin: 1.2rem 0 2.2rem; }
.cta__actions { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center; }
.cta .btn--primary { background: var(--on-dark); color: var(--ink); }
.cta .btn--primary:hover { background: var(--gold-soft); color: var(--ink); }
.cta .btn--ghost { color: var(--on-dark); }
.cta .btn--ghost:hover { background: var(--on-dark); color: var(--ink); border-color: var(--on-dark); }
.cta__note { font-size: .82rem; color: var(--on-dark-soft); opacity: .7; margin-top: 1.6rem; }

/* ---------- footer ---------- */
.footer { background: #08110d; color: var(--on-dark-soft); padding: 3.5rem 0; }
.footer__inner { display: flex; flex-wrap: wrap; gap: 2rem; justify-content: space-between; align-items: flex-start; }
.footer__brand .brand__name { color: var(--on-dark); font-weight: 700; letter-spacing: .14em; }
.footer__brand p { margin-top: .6rem; font-size: .92rem; max-width: 34ch; }
.footer__nav { display: flex; gap: 1.6rem; flex-wrap: wrap; }
.footer__nav a { font-size: .92rem; transition: color .2s; }
.footer__nav a:hover { color: var(--on-dark); }
.footer__legal { width: 100%; border-top: 1px solid rgba(255,255,255,.08); padding-top: 1.5rem; font-size: .82rem; }

/* ---------- reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 860px) {
  .nav__links { position: fixed; inset: 76px 0 auto 0; flex-direction: column; align-items: flex-start; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); padding: 1rem 1.25rem 1.5rem; transform: translateY(-120%); transition: transform .35s var(--ease); box-shadow: var(--shadow-lg); }
  .nav.is-open .nav__links { transform: none; }
  .nav__links a { width: 100%; padding: .85rem 0; font-size: 1.05rem; border-bottom: 1px solid var(--line); }
  .nav__links .btn { margin-top: .8rem; width: 100%; border-color: var(--ink); }
  .nav__toggle { display: flex; }
  .why { grid-template-columns: 1fr; }
}

/* ---------- motion / contrast prefs ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}
:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; border-radius: 4px; }