/* =========================================================
   Premier Health Clinical Research — Global Stylesheet
   Modern high-end clinical: Inter (thin), aubergine + lavender,
   champagne-gold accents, photographic imagery.
   ========================================================= */

:root {
  --plum-900: #1F1630;
  --plum-800: #2A1E3F;
  --plum-700: #392A54;
  --plum-600: #4C3A6E;

  --purple-600: #6E51A6;
  --purple-500: #8468BE;
  --purple-400: #9D86CF;

  --lavender-300: #C7B6E6;
  --lavender-200: #DED2F0;
  --lavender-100: #ECE4F7;
  --lavender-050: #F5F0FB;

  --gold: #C1A25C;
  --gold-soft: #D8C38C;

  --ink: #2A2338;
  --slate: #635B73;
  --muted: #928AA3;
  --line: #E9E3F1;
  --line-soft: #F0EBF7;
  --bg: #FCFBFE;
  --bg-soft: #F6F2FB;

  --radius: 10px;
  --radius-sm: 7px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(42,30,63,.05), 0 8px 24px rgba(42,30,63,.05);
  --shadow-md: 0 18px 44px rgba(56,40,84,.10);
  --shadow-lg: 0 34px 80px rgba(42,30,63,.18);

  --maxw: 1240px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Helvetica, Arial, sans-serif;
  --font-serif: var(--font-sans); /* legacy alias — all type is Inter now */
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.72;
  letter-spacing: -.002em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: var(--purple-600); text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--purple-500); }

h1, h2, h3, h4 {
  font-family: var(--font-sans);
  color: var(--plum-800);
  line-height: 1.14;
  margin: 0 0 .5em;
  font-weight: 400;
  letter-spacing: -.022em;
}
h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 300; }
h2 { font-size: clamp(1.85rem, 3.4vw, 2.7rem); font-weight: 400; }
h3 { font-size: 1.3rem; font-weight: 500; letter-spacing: -.015em; }
h4 { font-size: 1.05rem; font-weight: 600; letter-spacing: -.01em; }
p  { margin: 0 0 1.1rem; color: var(--slate); }

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

.section { padding: 104px 0; }
.section--soft { background: var(--bg-soft); }
.section--navy {
  background:
    radial-gradient(900px 500px at 82% -10%, rgba(157,134,207,.26), transparent 62%),
    linear-gradient(158deg, var(--plum-900), var(--plum-800) 62%, var(--plum-700));
  color: #fff;
}
.section--navy h2, .section--navy h3, .section--navy h4 { color: #fff; }
.section--navy p { color: #d7cce8; }

/* ---------- Eyebrow ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: .72rem; font-weight: 500; letter-spacing: .24em; text-transform: uppercase;
  color: var(--gold); margin-bottom: 20px;
}
.eyebrow::before { content:""; width: 24px; height: 1px; background: var(--gold); opacity:.85; }
.section--navy .eyebrow { color: var(--gold-soft); }

.section-head { max-width: 780px; margin: 0 auto 60px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.lead { font-size: 1.18rem; color: var(--slate); font-weight: 300; line-height: 1.66; }
.section--navy .lead { color: #d7cce8; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 14px 28px; border-radius: var(--radius-sm);
  font-weight: 500; font-size: .78rem; letter-spacing: .1em; text-transform: uppercase;
  border: 1px solid transparent; cursor: pointer; transition: all .2s ease; white-space: nowrap;
}
.btn--primary { background: var(--purple-600); color:#fff; }
.btn--primary:hover { background: var(--plum-700); color:#fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--navy { background: var(--plum-800); color:#fff; }
.btn--navy:hover { background: var(--plum-700); color:#fff; transform: translateY(-1px); }
.btn--ghost { background: transparent; color:#fff; border-color: rgba(255,255,255,.45); }
.btn--ghost:hover { background: rgba(255,255,255,.12); border-color: var(--gold-soft); color:#fff; }
.btn--outline { background: transparent; color: var(--plum-700); border-color: var(--line); }
.btn--outline:hover { border-color: var(--purple-500); color: var(--purple-600); }
.btn--lg { padding: 16px 34px; font-size: .8rem; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(252,251,254,.9);
  backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--line-soft);
}
.nav { display: flex; align-items: center; justify-content: space-between; gap: 24px; height: 78px; flex-wrap: nowrap; }
.brand { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.brand__mark { width: 44px; height: 44px; display: block; flex-shrink: 0; }
.brand__name { display:flex; flex-direction:column; line-height:1.12; }
.brand__name b { color: var(--plum-800); font-size: 1.06rem; font-weight: 700; letter-spacing: -.015em; text-transform: uppercase; }
.brand__name span { color: var(--purple-500); font-size: .58rem; letter-spacing: .26em; text-transform: uppercase; margin-top: 3px; }

.nav-links { display: flex; align-items: center; gap: 26px; list-style: none; margin:0; padding:0; }
.nav-links a { color: var(--plum-700); font-weight: 400; font-size: .84rem; letter-spacing: 0; white-space: nowrap; }
.nav-links a:hover, .nav-links a.active { color: var(--gold); }
.nav-cta { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-cta .btn { padding: 11px 18px; font-size: .68rem; letter-spacing: .08em; }

.nav-toggle { display:none; background:none; border:0; cursor:pointer; padding:8px; }
.nav-toggle span { display:block; width:24px; height:1.5px; background: var(--plum-800); margin:6px 0; transition:.2s; }

/* ---------- Nav dropdown (Clinical Research hub) ---------- */
.has-dropdown { position: relative; }
.nav-hub { display:inline-flex; align-items:center; gap:6px; cursor:pointer; }
.nav-hub svg { transition: transform .2s ease; opacity:.7; }
.has-dropdown:hover .nav-hub svg, .has-dropdown:focus-within .nav-hub svg { transform: rotate(180deg); }
.has-dropdown::before { content:""; position:absolute; top:100%; left:-10px; right:-10px; height:16px; }
.dropdown {
  position:absolute; top:calc(100% + 10px); left:-14px; min-width:236px;
  background:#fff; border:1px solid var(--line); border-radius:12px; box-shadow: var(--shadow-md);
  padding:10px; margin:0; list-style:none; z-index:60;
  opacity:0; visibility:hidden; transform: translateY(8px); transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown { opacity:1; visibility:visible; transform: translateY(0); }
.dropdown li { margin:0; }
.dropdown a {
  display:block; padding:11px 14px; border-radius:8px; font-size:.86rem; font-weight:400;
  color: var(--plum-700); letter-spacing:0; white-space:nowrap; text-transform:none;
}
.dropdown a:hover, .dropdown a.active { background: var(--lavender-050); color: var(--purple-600); }

/* ---------- Hero (with photographic background) ---------- */
.hero {
  position: relative; overflow: hidden;
  background-color: var(--plum-900);
  background-image:
    linear-gradient(150deg, rgba(31,22,48,.95) 0%, rgba(42,30,63,.86) 48%, rgba(57,42,84,.72) 100%),
    var(--hero-img, none);
  background-size: cover; background-position: center;
  color: #fff;
}
.hero__inner { position: relative; z-index:1; padding: 132px 0 138px; max-width: 900px; }
.hero h1 { color:#fff; margin-bottom: 24px; font-weight: 300; }
.hero h1 em, .page-hero h1 em { color: var(--gold-soft); font-style: normal; }
.hero p { color:#e0d6f2; font-size: 1.28rem; max-width: 680px; font-weight: 300; line-height: 1.6; }
.hero .btn-row { margin-top: 38px; }
.hero__tag {
  display:inline-flex; align-items:center; gap:11px; color:#e3d8f5; padding:0;
  font-size:.72rem; font-weight:500; letter-spacing:.24em; text-transform:uppercase; margin-bottom: 28px;
}
.hero__tag::before { content:""; width:7px; height:7px; transform: rotate(45deg); background: var(--gold); }

.page-hero {
  position: relative; overflow: hidden;
  background-color: var(--plum-900);
  background-image:
    linear-gradient(150deg, rgba(31,22,48,.94) 0%, rgba(42,30,63,.84) 55%, rgba(57,42,84,.72) 100%),
    var(--hero-img, none);
  background-size: cover; background-position: center;
  color:#fff; padding: 104px 0 92px;
}
.page-hero h1 { color:#fff; }
.page-hero p { color:#e0d6f2; font-size:1.2rem; max-width: 700px; font-weight: 300; }
.page-hero .eyebrow { color: var(--gold-soft); }
.breadcrumb { color:#b9abd0; font-size:.74rem; letter-spacing:.14em; text-transform:uppercase; margin-bottom: 20px; }
.breadcrumb a { color:#ccbfe4; }

/* ---------- Credibility bar ---------- */
.cred-bar { background: var(--plum-900); border-top: 1px solid rgba(193,162,92,.25); }
.cred-bar__inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 0; padding: 22px 0; }
.cred-item {
  display:flex; align-items:center; gap:11px; padding: 6px 32px; color:#e2d8f1;
  font-weight: 400; font-size:.76rem; letter-spacing:.14em; text-transform: uppercase;
  border-right: 1px solid rgba(255,255,255,.12);
}
.cred-item:last-child { border-right: 0; }
.cred-item svg { color: var(--gold); flex-shrink:0; }

/* ---------- Grid / Cards ---------- */
.grid { display: grid; gap: 28px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background:#fff; border:1px solid var(--line); border-radius: var(--radius);
  padding: 38px 34px; box-shadow: var(--shadow-sm);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); border-color: var(--lavender-200); }
.card__icon {
  width:58px; height:58px; border-radius: 50%; display:grid; place-items:center;
  background: var(--lavender-050); color: var(--purple-600); margin-bottom: 22px;
  box-shadow: inset 0 0 0 1px var(--lavender-200);
}
.card h3 { margin-bottom: 11px; }
.card p { margin-bottom: 0; font-size: 1rem; }

.tag-card { text-align:left; }
.tag-card .tag-num { font-size:.82rem; font-weight:600; color: var(--gold); letter-spacing:.14em; }

/* card with photo header */
.card--media { padding: 0; overflow: hidden; }
.card--media .card__photo { aspect-ratio: 16/10; overflow: hidden; }
.card--media .card__photo img { width:100%; height:100%; object-fit: cover; transition: transform .5s ease; }
.card--media:hover .card__photo img { transform: scale(1.04); }
.card--media .card__body { padding: 30px 32px 34px; }
.card--media .card__body h3 { margin-bottom: 10px; }
.card--media .card__body p { margin-bottom: 0; font-size: 1rem; }

/* pillar */
.pillar { display:flex; gap:22px; align-items:flex-start; }
.pillar__num {
  flex-shrink:0; width:54px; height:54px; border-radius:50%; background: transparent;
  color:var(--purple-600); display:grid; place-items:center; font-weight:400; font-size: 1.3rem;
  box-shadow: inset 0 0 0 1px var(--lavender-300);
}
.pillar h3 { margin-bottom: 8px; }
.pillar p { margin-bottom:0; }

/* ---------- Media split (image + text) ---------- */
.media-split { display:grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items:center; }
.media-split .eyebrow { margin-top: 0; }
.media-figure { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.media-figure::after { content:""; position:absolute; inset:0; box-shadow: inset 0 0 0 1px rgba(193,162,92,.25); border-radius: var(--radius-lg); pointer-events:none; }
.media-figure img { width:100%; height:100%; object-fit: cover; aspect-ratio: 4/3; }
.media-figure.tall img { aspect-ratio: 3/4; }

/* ---------- Split / audience ---------- */
.split { display:grid; grid-template-columns: 1fr 1fr; gap: 0; border-radius: var(--radius-lg); overflow:hidden; box-shadow: var(--shadow-md); border: 1px solid var(--line); }
.split__pane { padding: 58px 52px; }
.split__pane--sponsor {
  background: radial-gradient(600px 400px at 85% 0%, rgba(157,134,207,.22), transparent 60%), linear-gradient(160deg, var(--plum-800), var(--plum-700));
  color:#fff;
}
.split__pane--sponsor h3, .split__pane--sponsor p { color:#fff; }
.split__pane--sponsor p { color:#d7cce8; }
.split__pane--patient { background: var(--lavender-050); }
.split__pane .kicker { font-size:.72rem; font-weight:500; letter-spacing:.22em; text-transform:uppercase; margin-bottom:14px; display:block; }
.split__pane--sponsor .kicker { color: var(--gold-soft); }
.split__pane--patient .kicker { color: var(--gold); }

/* ---------- Compare ---------- */
.compare { display:grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.compare__col { border-radius: var(--radius); padding: 42px 38px; }
.compare__col--old { background: var(--bg-soft); border:1px solid var(--line); }
.compare__col--new {
  background: radial-gradient(600px 400px at 80% 0%, rgba(157,134,207,.22), transparent 60%), linear-gradient(160deg, var(--plum-800), var(--plum-700));
  color:#fff; box-shadow: var(--shadow-md);
}
.compare__col--new h3, .compare__col--new li { color:#fff; }
.compare__label { font-size:.72rem; font-weight:500; letter-spacing:.2em; text-transform:uppercase; margin-bottom:16px; display:block; }
.compare__col--old .compare__label { color: var(--muted); }
.compare__col--new .compare__label { color: var(--gold-soft); }
.check-list { list-style:none; margin:18px 0 0; padding:0; }
.check-list li { display:flex; gap:13px; align-items:flex-start; margin-bottom:15px; color: var(--slate); font-size: 1rem; }
.check-list li svg { flex-shrink:0; margin-top:5px; color: var(--purple-500); }
.compare__col--new .check-list li { color:#dccff0; }
.compare__col--new .check-list li svg { color: var(--gold-soft); }
.compare__col--old .check-list li svg { color: #c3bad4; }

/* ---------- Process flow ---------- */
.flow { display:flex; flex-wrap:wrap; gap:16px; align-items:stretch; }
.flow__step { flex:1 1 130px; background:#fff; border:1px solid var(--line); border-radius: var(--radius-sm); padding: 24px 16px; text-align:center; position:relative; box-shadow: var(--shadow-sm); }
.flow__step .n {
  display:inline-grid; place-items:center; width:38px; height:38px; border-radius:50%;
  background: var(--lavender-050); color: var(--purple-600); font-weight:500; font-size:1rem; margin-bottom:12px;
  box-shadow: inset 0 0 0 1px var(--lavender-200);
}
.flow__step strong { display:block; font-weight:500; color:#fff; font-size:.98rem; }
.section--navy .flow__step { background: rgba(255,255,255,.05); border-color: rgba(255,255,255,.12); box-shadow:none; }
.section--navy .flow__step strong { color:#fff; }
.section--navy .flow__step .n { background: rgba(193,162,92,.16); color: var(--gold-soft); box-shadow: inset 0 0 0 1px rgba(193,162,92,.4); }
.flow__arrow { align-self:center; color: var(--gold-soft); font-weight:400; }

/* ---------- Stats ---------- */
.stats { display:grid; grid-template-columns: repeat(4,1fr); gap:28px; text-align:center; }
.stat b { display:block; font-size: clamp(2.2rem,4vw,3.1rem); color:#fff; font-weight:300; letter-spacing:-.02em; }
.stat span { color:#c6b7de; font-size:.78rem; letter-spacing:.12em; text-transform: uppercase; }
.stat b em { color: var(--gold-soft); font-style: normal; }

/* ---------- Forms ---------- */
.form-card { background:#fff; border:1px solid var(--line); border-radius: var(--radius-lg); padding: 46px; box-shadow: var(--shadow-md); }
.form-grid { display:grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display:flex; flex-direction:column; gap:8px; margin-bottom:20px; }
.field.full { grid-column: 1 / -1; }
.field label { font-weight:500; font-size:.74rem; letter-spacing:.09em; text-transform: uppercase; color: var(--plum-700); }
.field .req { color: var(--gold); }
.field input, .field select, .field textarea {
  width:100%; padding: 14px 16px; border:1px solid var(--line); border-radius: var(--radius-sm);
  font-family: inherit; font-size:1rem; font-weight:300; color: var(--ink); background:#fff;
  transition: border .18s ease, box-shadow .18s ease;
}
.field input::placeholder, .field textarea::placeholder { color: var(--muted); }
.field input:focus, .field select:focus, .field textarea:focus { outline:none; border-color: var(--purple-500); box-shadow: 0 0 0 3px rgba(132,104,190,.14); }
.field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size:.9rem; color: var(--muted); margin-top: 8px; }
.form-success { display:none; background: var(--lavender-050); border:1px solid var(--lavender-200); color: var(--purple-600); padding:16px 18px; border-radius: var(--radius-sm); font-weight:400; margin-bottom:20px; }

/* ---------- Callout ---------- */
.callout { background: var(--lavender-050); border-left: 2px solid var(--gold); padding: 24px 28px; border-radius: var(--radius-sm); color: var(--plum-700); font-size: 1rem; }
.callout strong { color: var(--plum-800); font-weight: 500; }

/* ---------- Locations ---------- */
.loc-card { text-align:left; }
.loc-card .pin { color: var(--purple-500); margin-bottom: 14px; }
a.loc-card { display:block; color:inherit; }
a.loc-card:hover, a.loc-card:hover h3 { color:inherit; }
.loc-link { display:inline-block; margin-top:14px; font-size:.7rem; font-weight:500; letter-spacing:.14em; text-transform:uppercase; color:var(--purple-600); }
a.loc-card:hover .loc-link { color:var(--gold); }
.loc-card .check-list li span { display:block; }
.loc-badge { display:inline-block; font-size:.64rem; font-weight:500; letter-spacing:.16em; text-transform:uppercase; color: var(--gold); background: transparent; box-shadow: inset 0 0 0 1px var(--lavender-300); padding:5px 12px; border-radius:999px; margin-bottom: 14px; }

/* ---------- CTA band ---------- */
.cta-band {
  background: radial-gradient(700px 400px at 15% 20%, rgba(157,134,207,.3), transparent 60%), linear-gradient(150deg, var(--plum-800), var(--purple-600));
  color:#fff; border-radius: var(--radius-lg); padding: 74px 58px; text-align:center; box-shadow: var(--shadow-md);
}
.cta-band h2 { color:#fff; }
.cta-band p { color:#e6dcf4; max-width:640px; margin:0 auto 30px; font-size: 1.12rem; }

/* ---------- Footer ---------- */
.site-footer { background: var(--plum-900); color:#c6b8dd; padding: 78px 0 32px; }
.footer-grid { display:grid; grid-template-columns: 1.7fr 1fr 1fr 1fr; gap: 42px; }
.site-footer h4 { color:#fff; font-size:.72rem; font-weight:500; letter-spacing:.16em; text-transform: uppercase; margin-bottom:18px; }
.site-footer ul { list-style:none; margin:0; padding:0; }
.site-footer li { margin-bottom:11px; }
.site-footer a { color:#b3a4cc; font-size:.94rem; font-weight:300; }
.site-footer a:hover { color: var(--gold-soft); }
.footer-brand p { color:#9384b0; font-size:.94rem; max-width: 320px; font-weight:300; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.09); margin-top:50px; padding-top:26px; display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; color:#8879a3; font-size:.85rem; font-weight:300; }
.footer-disclaimer { font-size:.82rem; color:#8879a3; }

/* ---------- Utilities ---------- */
.mt-0 { margin-top:0; } .mb-0 { margin-bottom:0; }
.center { text-align:center; }
.stack-lg > * + * { margin-top: 24px; }
.pill-list { display:flex; flex-wrap:wrap; gap:11px; padding:0; margin:22px 0 0; list-style:none; }
.pill-list li { background:#fff; box-shadow: inset 0 0 0 1px var(--line); color: var(--plum-700); padding:8px 16px; border-radius:999px; font-weight:400; font-size:.8rem; letter-spacing:.06em; text-transform: uppercase; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .nav-links, .nav-cta .btn { display: none; }
  .nav-toggle { display:block; }
  .nav.open .nav-links {
    display:flex; position:absolute; top:78px; left:0; right:0; flex-direction:column; align-items:flex-start;
    background:#fff; border-bottom:1px solid var(--line); padding:22px 30px; gap:16px; box-shadow: var(--shadow-md);
  }
  .has-dropdown::before { display:none; }
  .dropdown {
    position:static; opacity:1; visibility:visible; transform:none; box-shadow:none; border:none;
    padding:8px 0 0 14px; margin:6px 0 0; min-width:0; border-left:2px solid var(--lavender-200); border-radius:0;
  }
  .dropdown a { padding:6px 0; }
  .nav-hub svg { display:none; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .split, .compare, .form-grid, .media-split { grid-template-columns: 1fr; }
  .media-split { gap: 36px; }
  .stats { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .flow__arrow { transform: rotate(90deg); }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .section { padding: 70px 0; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cred-item { border-right:0; padding: 4px 16px; }
  .split__pane, .form-card, .compare__col { padding: 32px 26px; }
  .cta-band { padding: 50px 28px; }
  .hero__inner { padding: 92px 0 96px; }
}