/* =========================================================================
   Future Healthcare Experience
   A concept study — healthcare designed around people.

   Design system: warm canvas, deep ink, one calm jade accent.
   Serif display (Newsreader) + clean sans (Inter). Restrained motion.
   ========================================================================= */

/* -------------------------------------------------------------------------
   1. Tokens
   ------------------------------------------------------------------------- */
:root {
  /* Surfaces */
  --canvas:      #FAFAF7;   /* warm paper white */
  --surface:     #FFFFFF;
  --surface-2:   #F4F4F0;

  /* Ink */
  --ink:         #15181D;   /* near-black, faintly cool */
  --ink-soft:    #3B4047;
  --muted:       #6A7079;
  --faint:       #9AA0A8;

  /* Accent — calm jade/teal: trust, health, quiet confidence */
  --accent:      #1C7A69;
  --accent-deep: #135A4D;
  --accent-tint: #E4F0EC;
  --accent-glow: rgba(28, 122, 105, 0.16);

  /* Pale gradient washes used sparingly for atmosphere */
  --wash-mint:   #E9F4EF;
  --wash-sky:    #EAF1F7;
  --wash-sand:   #F6F1E8;
  --wash-lilac:  #EFEDF7;

  /* Lines & shadows */
  --line:        rgba(21, 24, 29, 0.08);
  --line-strong: rgba(21, 24, 29, 0.14);
  --shadow-sm:   0 1px 2px rgba(21,24,29,0.04), 0 2px 8px rgba(21,24,29,0.04);
  --shadow-md:   0 4px 16px rgba(21,24,29,0.06), 0 12px 32px rgba(21,24,29,0.06);
  --shadow-lg:   0 8px 28px rgba(21,24,29,0.08), 0 30px 60px rgba(21,24,29,0.10);
  --shadow-glow: 0 18px 50px var(--accent-glow);

  /* Type */
  --serif: "Newsreader", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Radii */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 999px;

  /* Layout */
  --container: 1180px;
  --container-narrow: 760px;
  --gutter: clamp(20px, 5vw, 56px);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.4, 0, 0.2, 1);
  --t-fast: 0.25s;
  --t: 0.5s;
  --t-slow: 0.9s;
}

/* -------------------------------------------------------------------------
   2. Reset & base
   ------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

* { margin: 0; }

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

body {
  font-family: var(--sans);
  background: var(--canvas);
  color: var(--ink);
  font-size: 1.0625rem;
  line-height: 1.65;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

button, input, textarea, select { font: inherit; color: inherit; }

::selection { background: var(--accent); color: #fff; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* -------------------------------------------------------------------------
   3. Typography
   ------------------------------------------------------------------------- */
.serif { font-family: var(--serif); }

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.display {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.7rem, 6vw, 5.1rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
}

.display-2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.1rem, 4.4vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
}

h2.section-title {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.9rem, 3.4vw, 2.9rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
}

h3 { font-size: clamp(1.25rem, 2vw, 1.55rem); }

.lead {
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
  line-height: 1.55;
  color: var(--ink-soft);
  font-weight: 400;
  letter-spacing: -0.012em;
}

.muted { color: var(--muted); }
.faint { color: var(--faint); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--accent);
  opacity: 0.5;
}
.eyebrow.center::before { display: none; }

.accent-text { color: var(--accent); }

p + p { margin-top: 1em; }

/* -------------------------------------------------------------------------
   4. Layout primitives
   ------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container.narrow { max-width: var(--container-narrow); }

section { position: relative; }

.section {
  padding-block: clamp(54px, 7.5vw, 104px);
}
.section.tight { padding-block: clamp(44px, 6vw, 80px); }

.center { text-align: center; }
.mx-auto { margin-inline: auto; }

.stack > * + * { margin-top: 1.2rem; }
.measure { max-width: 38ch; }
.measure-wide { max-width: 54ch; }

.grid { display: grid; gap: clamp(20px, 3vw, 36px); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* -------------------------------------------------------------------------
   5. Navigation
   ------------------------------------------------------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background var(--t) var(--ease), box-shadow var(--t) var(--ease),
              border-color var(--t) var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(250, 250, 247, 0.78);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: 1280px;
  margin-inline: auto;
  padding: 16px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-weight: 600;
  letter-spacing: -0.02em;
  font-size: 1.02rem;
}
.brand small {
  display: block;
  font-weight: 400;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 1px;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0;
}
.nav__links a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 13px;
  border-radius: var(--r-pill);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  transition: color var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.nav__links a .ch {
  font-size: 0.66rem;
  font-weight: 600;
  color: var(--faint);
  letter-spacing: 0.04em;
}
.nav__links a:hover { color: var(--ink); background: rgba(21,24,29,0.04); }
.nav__links a[aria-current="page"] { color: var(--accent); }
.nav__links a[aria-current="page"] .ch { color: var(--accent); opacity: 0.7; }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 17px;
  border-radius: var(--r-pill);
  background: var(--ink);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  transition: transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}
.nav__cta:hover { background: var(--accent-deep); transform: translateY(-1px); }

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  border-radius: 12px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav__toggle span, .nav__toggle span::before, .nav__toggle span::after {
  content: "";
  display: block;
  width: 18px; height: 1.6px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast);
}
.nav__toggle span { position: relative; }
.nav__toggle span::before { position: absolute; top: -6px; }
.nav__toggle span::after  { position: absolute; top: 6px; }
body.menu-open .nav__toggle span { background: transparent; }
body.menu-open .nav__toggle span::before { transform: translateY(6px) rotate(45deg); }
body.menu-open .nav__toggle span::after  { transform: translateY(-6px) rotate(-45deg); }

/* nav collapses to the hamburger at 1240px — the enlarged AVENIR wordmark + its
   tagline need the room before the inline CTA + 5 links fit cleanly alongside
   (keep in sync with the dark-dropdown + nav__cta--center rules in effects.css) */
@media (max-width: 1240px) {
  .nav__toggle { display: inline-flex; }
  .nav__menu {
    position: fixed;
    inset: 70px 0 auto 0;
    margin: 0 var(--gutter);
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-lg);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
  }
  body.menu-open .nav__menu { opacity: 1; transform: none; pointer-events: auto; }
  .nav__links { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav__links a { padding: 12px 14px; font-size: 1rem; }
  .nav__cta { justify-content: center; margin-top: 6px; padding: 13px; }
}

/* -------------------------------------------------------------------------
   6. Buttons
   ------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 14px 26px;
  border-radius: var(--r-pill);
  font-size: 0.98rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--t-fast) var(--ease), background var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
  white-space: nowrap;
}
.btn .arrow { transition: transform var(--t-fast) var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

.btn--primary {
  background: var(--ink);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn--primary:hover { background: var(--accent-deep); transform: translateY(-2px); box-shadow: var(--shadow-md); }

.btn--accent {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn--accent:hover { background: var(--accent-deep); transform: translateY(-2px); }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}
.btn--ghost:hover { border-color: var(--ink); background: rgba(21,24,29,0.03); transform: translateY(-1px); }

.btn--lg { padding: 16px 30px; font-size: 1.04rem; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-weight: 500;
  color: var(--accent);
}
.link-arrow .arrow { transition: transform var(--t-fast) var(--ease); }
.link-arrow:hover .arrow { transform: translateX(4px); }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn-row.center { justify-content: center; }

/* -------------------------------------------------------------------------
   7. Cards & surfaces
   ------------------------------------------------------------------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(24px, 3vw, 36px);
  box-shadow: var(--shadow-sm);
  transition: transform var(--t) var(--ease), box-shadow var(--t) var(--ease),
              border-color var(--t) var(--ease);
}
.card--hover:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--line-strong);
}

.icon-badge {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--accent-tint);
  color: var(--accent-deep);
  margin-bottom: 20px;
}
.icon-badge svg { width: 24px; height: 24px; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: var(--r-pill);
  background: var(--surface);
  border: 1px solid var(--line);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--ink-soft);
  box-shadow: var(--shadow-sm);
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }

/* Atmospheric backgrounds */
.bg-wash { background: var(--surface-2); }
.bg-tint { background: linear-gradient(180deg, var(--wash-mint), var(--canvas)); }
.bg-ink {
  background: radial-gradient(120% 120% at 80% 0%, #1e2a31 0%, #12161b 55%, #0d1014 100%);
  color: #fff;
}
.bg-ink h1, .bg-ink h2, .bg-ink h3 { color: #fff; }
.bg-ink .muted { color: rgba(255,255,255,0.62); }
.bg-ink .lead { color: rgba(255,255,255,0.78); }
.bg-ink .eyebrow { color: #7fd8c4; }
.bg-ink .eyebrow::before { background: #7fd8c4; }

.soft-divider { height: 1px; background: var(--line); border: 0; }

/* -------------------------------------------------------------------------
   8. Reveal-on-scroll motion
   ------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
  /* no will-change here: promoting every reveal to its own GPU layer
     (dozens per page) costs more than the occasional transition saves */
}
.reveal.is-visible { opacity: 1; transform: none; }

.reveal-fade {
  opacity: 0;
  transition: opacity var(--t-slow) var(--ease);
  transition-delay: calc(var(--i, 0) * 90ms);
}
.reveal-fade.is-visible { opacity: 1; }

/* -------------------------------------------------------------------------
   9. Footer
   ------------------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--line);
  padding-block: clamp(56px, 7vw, 88px) 40px;
  background: var(--surface);
}
.footer__top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.footer__cols { display: contents; }
.footer h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--faint);
  font-weight: 600;
  margin-bottom: 16px;
}
.footer ul { list-style: none; padding: 0; display: grid; gap: 11px; }
.footer ul a { color: var(--ink-soft); font-size: 0.96rem; transition: color var(--t-fast); }
.footer ul a:hover { color: var(--accent); }
.footer__note {
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.88rem;
}
@media (max-width: 760px) {
  .footer__top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer__brand { grid-column: 1 / -1; }
}

/* -------------------------------------------------------------------------
   10. Disclaimer / concept badge
   ------------------------------------------------------------------------- */
.concept-flag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 6px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--surface);
}
.concept-flag .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* -------------------------------------------------------------------------
   11. Reduced motion
   ------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal, .reveal-fade { opacity: 1; transform: none; }
}