/* Blackstone Health Advisors — static site
   Dark / platinum / muted gold. No framework. */

:root {
  --bg: #070708;
  --bg-2: #0d0e10;
  --bg-3: #121316;
  --bg-card: #14151a;
  --bg-card-hover: #1a1b21;
  --ink: #f3f1eb;
  --ink-soft: #c9c5bb;
  --muted: #9a958b;
  --faint: #6e6a63;
  --line: rgba(212, 196, 160, 0.16);
  --line-strong: rgba(212, 196, 160, 0.38);
  --gold: #c6b48a;
  --gold-2: #d8c9a4;
  --gold-dim: #8d7c58;
  --platinum: #e4e1d8;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
  --radius: 18px;
  --wrap: 1120px;
  --header-h: 72px;
  --font: "Outfit", "Segoe UI", system-ui, sans-serif;
  --display: "Syne", "Segoe UI", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink-soft);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100%;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold-2); text-decoration: none; }
a:hover { color: var(--ink); }
button, input, select, textarea { font: inherit; color: inherit; }
address { font-style: normal; }

.skip {
  position: absolute;
  left: 12px; top: -40px;
  background: var(--gold);
  color: #111;
  padding: 8px 12px;
  z-index: 1000;
}
.skip:focus { top: 12px; }

.wrap {
  width: min(var(--wrap), calc(100% - 40px));
  margin-inline: auto;
}

h1, h2, h3, .brand-name {
  font-family: var(--display);
  color: var(--ink);
  letter-spacing: -0.03em;
  font-weight: 700;
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 5.4vw, 4.4rem);
  font-weight: 800;
  color: var(--platinum);
}

h2 { font-size: clamp(1.85rem, 3.4vw, 2.85rem); }
h3 { font-size: 1.35rem; letter-spacing: -0.02em; }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

.lede {
  font-size: 1.08rem;
  color: var(--ink-soft);
  max-width: 58ch;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}
.kicker span {
  color: var(--gold-dim);
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 22px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}
.eyebrow .dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s, border-color 0.25s, color 0.25s;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-gold {
  background: linear-gradient(180deg, #d8c9a4, #c0ab7e);
  color: #16140f;
  box-shadow: 0 8px 24px rgba(198, 180, 138, 0.18);
}
.btn-gold:hover { color: #0b0b0c; filter: brightness(1.05); }

.btn-line,
.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--platinum);
}
.btn-line:hover,
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--ink);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 4px;
}
.text-link:hover { color: var(--ink); border-color: var(--gold); }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(7, 7, 8, 0.55);
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  border-bottom: 1px solid transparent;
  transition: background 0.3s, border-color 0.3s;
}
.site-header.is-scrolled {
  background: rgba(7, 7, 8, 0.88);
  border-bottom-color: var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 28px;
  width: min(var(--wrap), calc(100% - 40px));
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  min-width: 0;
}
.brand:hover { color: inherit; }
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--line);
}
.brand-type { display: flex; flex-direction: column; line-height: 1.05; }
.brand-name {
  font-size: 0.92rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 700;
}
.brand-sub {
  font-size: 0.58rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 3px;
}

.nav { margin-left: auto; }
.nav-list {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list a {
  display: block;
  padding: 8px 12px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 999px;
  position: relative;
}
.nav-list a:hover,
.nav-list a.is-active {
  color: var(--ink);
}
.nav-list a.is-active::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 4px;
  height: 1px;
  background: var(--gold);
}

.header-cta { margin-left: 8px; min-height: 40px; padding: 0 16px; font-size: 0.8rem; }

.menu-btn {
  display: none;
  margin-left: auto;
  width: 44px; height: 44px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 11px;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
}
.menu-btn span {
  display: block;
  height: 1.5px;
  background: var(--platinum);
  transition: transform 0.25s var(--ease), opacity 0.2s;
}
.menu-btn.is-open span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.menu-btn.is-open span:nth-child(2) { opacity: 0; }
.menu-btn.is-open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

.mobile-nav {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: rgba(7, 7, 8, 0.96);
  z-index: 40;
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
}
.mobile-nav[hidden] { display: none; }
.mobile-nav nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.mobile-nav a {
  font-family: var(--display);
  font-size: 1.8rem;
  color: var(--platinum);
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}
.mobile-nav a:hover { color: var(--gold-2); }

body.nav-open { overflow: hidden; }

/* Hero */
.hero {
  position: relative;
  min-height: max(100svh, 640px);
  display: flex;
  align-items: center;
  isolation: isolate;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    url("../assets/hero.jpg") right center / cover no-repeat;
  transform: scale(1.04);
  animation: ken 28s var(--ease) alternate infinite;
}
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(7,7,8,0.88) 0%, rgba(7,7,8,0.62) 38%, rgba(7,7,8,0.28) 68%, rgba(7,7,8,0.45) 100%),
    linear-gradient(180deg, rgba(7,7,8,0.35) 0%, rgba(7,7,8,0.08) 40%, rgba(7,7,8,0.82) 100%);
}
.hero-inner {
  position: relative;
  padding: 120px 0 140px;
  max-width: 760px;
  margin-left: max(20px, calc((100% - var(--wrap)) / 2));
  margin-right: auto;
  width: min(760px, calc(100% - 40px));
}
.thesis {
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 22px 0 32px;
  font-weight: 300;
  line-height: 1.7;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.scroll-cue {
  position: absolute;
  left: max(20px, calc((100% - var(--wrap)) / 2));
  bottom: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}
.scroll-cue i {
  display: block;
  width: 1px;
  height: 36px;
  background: linear-gradient(var(--gold), transparent);
  animation: pulse 2.2s ease-in-out infinite;
}

@keyframes ken {
  from { transform: scale(1.04) translate3d(0, 0, 0); }
  to { transform: scale(1.1) translate3d(-1.5%, -1%, 0); }
}
@keyframes pulse {
  0%, 100% { opacity: 0.35; transform: scaleY(0.7); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); }
}

.rail {
  border-block: 1px solid var(--line);
  background: var(--bg-2);
}
.rail-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  font-size: 0.92rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.rail-inner strong { color: var(--platinum); font-weight: 600; }
.rail-rule {
  width: 48px;
  height: 1px;
  background: var(--line-strong);
}

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.section-head { margin-bottom: 48px; max-width: 720px; }
.section-head h2 { margin-bottom: 16px; }

.venture-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.01));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 26px 26px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s, transform 0.35s var(--ease), background 0.3s;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent 70%);
  opacity: 0.55;
}
.card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}
.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 28px;
}
.idx {
  font-family: var(--display);
  font-size: 1.5rem;
  color: var(--gold);
  letter-spacing: 0.04em;
}
.chip {
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 5px 10px;
  border-radius: 999px;
}
.card h3 { margin-bottom: 8px; }
.card-meta {
  color: var(--gold);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
}
.card p { color: var(--ink-soft); }
.card-points {
  list-style: none;
  margin: auto 0 0;
  padding: 20px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}
.card-points li {
  padding: 8px 0 8px 16px;
  border-top: 1px solid var(--line);
  position: relative;
}
.card-points li::before {
  content: "";
  position: absolute;
  left: 0; top: 16px;
  width: 6px; height: 1px;
  background: var(--gold);
}

.advisors-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}
.ops-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}
.ops-list li {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}
.ops-list span {
  display: block;
  color: var(--platinum);
  font-family: var(--display);
  font-size: 1.05rem;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.about {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}
.about-visual {
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.about-visual img {
  width: 100%;
  height: auto;
  display: block;
}
.role {
  color: var(--gold);
  margin: 10px 0 22px;
  letter-spacing: 0.04em;
  font-size: 0.95rem;
}
.facts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 28px 0 18px;
  border-top: 1px solid var(--line);
}
.facts > div {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.facts dt {
  color: var(--faint);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding-top: 4px;
}
.facts dd { margin: 0; color: var(--platinum); }

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 28px;
  align-items: start;
}
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
}
.contact-card h3 { margin-bottom: 16px; font-size: 1.15rem; }
.contact-card address,
.contact-card p { margin-bottom: 12px; }
.contact-card a { color: var(--platinum); }
.contact-card a:hover { color: var(--gold-2); }
.fine { color: var(--faint) !important; font-size: 0.88rem; margin-top: 18px; }

.form {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: grid;
  gap: 16px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label {
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.opt { letter-spacing: 0.08em; color: var(--faint); font-weight: 400; text-transform: lowercase; }
.field input,
.field select,
.field textarea {
  background: #0b0c0e;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--ink);
  outline: none;
  min-height: 48px;
  transition: border-color 0.2s;
}
.field textarea { min-height: 140px; resize: vertical; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-color: var(--gold); }
.field input:invalid:not(:placeholder-shown):not(:focus),
.field textarea:invalid:not(:placeholder-shown):not(:focus) {
  border-color: #b07070;
}
.form .btn { justify-self: start; }
.form-note {
  font-size: 0.9rem;
  color: var(--gold-2);
  margin: 0;
}
.form-note.is-error { color: #e0a0a0; }

.site-footer {
  padding: 36px 0 48px;
  border-top: 1px solid var(--line);
  background: #050506;
}
.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 24px;
  align-items: center;
}
.footer-copy {
  color: var(--faint);
  font-size: 0.85rem;
  margin: 0;
}
.footer-loc {
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0;
}

.field option { background: #0b0c0e; color: var(--ink); }

/* Motion: reveal on scroll (only when JS marked html.js before paint) */
.js .card,
.js .section-head,
.js .advisors-grid,
.js .about-copy,
.js .contact-grid,
.js .rail {
  opacity: 0;
  transform: translateY(16px);
}
.js .is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

/* Focus */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

/* Responsive */
@media (max-width: 980px) {
  .venture-grid { grid-template-columns: 1fr; }
  .advisors-grid,
  .about,
  .contact-grid,
  .footer-inner { grid-template-columns: 1fr; }
  .nav, .header-cta { display: none; }
  .menu-btn { display: flex; }
  .hero { min-height: 100svh; }
  .hero-inner { padding: 100px 0 120px; }
  .hero-shade {
    background:
      linear-gradient(180deg, rgba(7,7,8,0.55) 0%, rgba(7,7,8,0.72) 45%, rgba(7,7,8,0.92) 100%),
      linear-gradient(90deg, rgba(7,7,8,0.55), rgba(7,7,8,0.2));
  }
  .about-visual { max-width: 420px; }
  .section { padding: 72px 0; }
  .rail-rule { display: none; }
  .field-row { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .hero-media { background-image: url("../assets/hero-sm.jpg"); }
  .wrap { width: min(var(--wrap), calc(100% - 32px)); }
  .brand-sub { display: none; }
  h1 { font-size: clamp(2.05rem, 10vw, 2.7rem); }
  .hero-inner { padding-top: 88px; }
  .scroll-cue { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-media { animation: none; transform: none; }
  .scroll-cue i { animation: none; }
  .js .card, .js .section-head, .js .advisors-grid, .js .about-copy, .js .contact-grid, .js .rail, .js .is-in { opacity: 1; transform: none; transition: none; }
  .btn, .card { transition: none; }
}

@media (min-width: 1400px) {
  .hero-media { background-position: center 40%; }
}