/*
 * base.css — shared foundation for Evidara solution pages
 * Used by: heor, market-access, medical-affairs, clinical-development
 * NOT used by: research.html (app), index.html (light nav), skills.html/slr.html (own nav)
 */

/* ── Reset ─────────────────────────────────────────────────────────────────── */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}

/* ── Design tokens ──────────────────────────────────────────────────────────── */
:root{
  --green:#0a6e4f;--green-d:#085c42;--green-l:rgba(10,110,79,.1);
  --ink:#111827;--muted:#4b5563;--muted2:#9ca3af;
  --bg:#f9fafb;--white:#fff;--border:#e5e7eb;--dark:#0d1117;
  --r:6px;--nav-h:64px;
  --shadow-sm:0 1px 3px rgba(0,0,0,.06),0 2px 6px rgba(0,0,0,.04);
  --shadow-md:0 4px 20px rgba(0,0,0,.08);
}

/* ── Base ───────────────────────────────────────────────────────────────────── */
body{background:#fff;color:var(--ink);font-family:'Inter',sans-serif;font-size:16px;line-height:1.7;overflow-x:hidden}
a{color:var(--green);text-decoration:none}
h1,h2,h3{font-family:'Fraunces',serif;font-weight:200;letter-spacing:-.02em;line-height:1.1}
.container{max-width:1100px;margin:0 auto;padding:0 48px}

/* ── Eyebrow label ──────────────────────────────────────────────────────────── */
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:'Inter',sans-serif;font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--green);margin-bottom:18px;font-weight:500}
.eyebrow::before{content:'';width:18px;height:1.5px;background:var(--green)}

/* ── Nav ─────────────────────────────────────────────────────────────────────── */
nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);background:rgba(13,17,23,.96);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.06);display:flex;align-items:center;justify-content:space-between;padding:0 48px;z-index:500}
.n-logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:#fff;flex-shrink:0}
.n-logo-box{width:30px;height:30px;border:1.5px solid var(--green);border-radius:4px;display:flex;align-items:center;justify-content:center}
.n-logo-text{font-family:'Fraunces',serif;font-size:19px;font-weight:300;letter-spacing:-.01em}
.n-logo-text em{font-style:normal;color:var(--green)}
.n-cert{font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:rgba(10,110,79,.7);border:1px solid rgba(10,110,79,.2);padding:2px 7px;border-radius:2px;font-weight:500;margin-left:4px}
.n-links{display:flex;gap:0;list-style:none;margin:0 20px}
.n-links a{display:block;padding:6px 16px;font-family:'Inter',sans-serif;font-size:14px;color:rgba(255,255,255,.6);text-decoration:none;border-radius:var(--r);transition:color .2s;font-weight:400}
.n-links a:hover{color:#fff}
.n-drop{position:relative}
.n-drop::after{content:'';position:absolute;top:100%;left:0;width:100%;height:8px}
.n-drop>a::after{content:'⌄';margin-left:4px;font-size:11px;opacity:.5}
.n-drop-menu{display:none;position:absolute;top:calc(100% + 8px);left:0;background:rgba(13,17,23,.98);border:1px solid rgba(255,255,255,.1);border-radius:var(--r);padding:8px;min-width:280px;z-index:100;box-shadow:0 8px 40px rgba(0,0,0,.4)}
.n-drop:hover .n-drop-menu{display:block}
.n-drop-item{display:block;padding:10px 14px;border-radius:4px;transition:background .15s;text-decoration:none}
.n-drop-item:hover{background:rgba(255,255,255,.06)}
.n-drop-item-label{display:block;font-family:'Inter',sans-serif;font-size:13px;font-weight:500;color:#fff;margin-bottom:2px}
.n-drop-item-desc{display:block;font-family:'Inter',sans-serif;font-size:12px;color:rgba(255,255,255,.4);line-height:1.4}
.n-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.n-ghost{font-family:'Inter',sans-serif;font-size:13px;font-weight:400;color:rgba(255,255,255,.75);border:1px solid rgba(255,255,255,.15);padding:9px 20px;border-radius:var(--r);text-decoration:none;transition:all .2s}
.n-ghost:hover{border-color:rgba(255,255,255,.35);color:#fff}
.n-cta{font-family:'Inter',sans-serif;font-size:13px;font-weight:500;color:#fff;background:var(--green);padding:10px 22px;border-radius:var(--r);text-decoration:none;transition:background .2s}
.n-cta:hover{background:var(--green-d)}

/* ── Hero ───────────────────────────────────────────────────────────────────── */
.hero{background:var(--dark);padding:calc(var(--nav-h) + 80px) 0 64px;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:radial-gradient(ellipse 800px 500px at 65% 50%,rgba(10,110,79,.08) 0%,transparent 70%);pointer-events:none}
.hero h1{font-size:clamp(48px,5vw,72px);color:#fff;margin-bottom:20px;max-width:780px}
.hero h1 em{font-style:italic;color:var(--green)}
.hero-sub{font-family:'Inter',sans-serif;font-size:19px;color:rgba(255,255,255,.5);line-height:1.8;max-width:560px;margin-bottom:40px}
.hero-ctas{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:60px}
.hero-cta{font-family:'Inter',sans-serif;font-size:14px;font-weight:500;color:#fff;background:var(--green);padding:13px 28px;border-radius:var(--r);transition:background .2s}
.hero-cta:hover{background:var(--green-d)}
.hero-ghost{font-family:'Inter',sans-serif;font-size:14px;color:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.15);padding:12px 24px;border-radius:var(--r);transition:all .2s}
.hero-ghost:hover{border-color:rgba(255,255,255,.35);color:#fff}

/* ── KPI strip ──────────────────────────────────────────────────────────────── */
.kpi-strip{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid rgba(255,255,255,.07)}
.kpi-item{padding:28px 32px 28px 0;border-right:1px solid rgba(255,255,255,.07)}
.kpi-item:last-child{border-right:none}
.kpi-val{font-family:'Fraunces',serif;font-size:34px;font-weight:200;color:#fff;line-height:1;margin-bottom:6px}
.kpi-val em{font-style:normal;color:var(--green);font-size:20px}
.kpi-lbl{font-family:'Inter',sans-serif;font-size:12px;color:rgba(255,255,255,.4);line-height:1.5}

/* ── Section heading ────────────────────────────────────────────────────────── */
.section-hd{margin-bottom:52px}
.section-hd h2{font-size:clamp(36px,3.5vw,52px);margin-bottom:14px}
.section-hd p{font-family:'Inter',sans-serif;font-size:16px;color:var(--muted);line-height:1.75;max-width:540px}

/* ── Challenges ─────────────────────────────────────────────────────────────── */
.challenges{padding:88px 0;background:#fff;border-bottom:1px solid var(--border)}
.challenge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--r);overflow:hidden}
.ch-card{background:#fff;padding:36px 32px;transition:background .2s;position:relative}
.ch-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--border);transition:background .3s}
.ch-card:hover{background:var(--bg)}
.ch-card:hover::before{background:var(--green)}
.ch-num{font-family:'Fraunces',serif;font-size:11px;font-weight:200;color:var(--muted2);font-style:italic;margin-bottom:16px;letter-spacing:.04em}
.ch-title{font-family:'Inter',sans-serif;font-size:15px;font-weight:500;color:var(--ink);margin-bottom:10px}
.ch-body{font-family:'Inter',sans-serif;font-size:13px;color:var(--muted);line-height:1.75}
.ch-cost{display:inline-block;margin-top:16px;font-family:'Inter',sans-serif;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:#dc2626;border:1px solid rgba(220,38,38,.2);padding:4px 10px;border-radius:2px;font-weight:500}

/* ── How it helps ────────────────────────────────────────────────────────────── */
.helps{padding:88px 0;background:var(--bg);border-bottom:1px solid var(--border)}
.helps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.help-card{background:#fff;border:1px solid var(--border);border-radius:var(--r);padding:36px 32px;transition:border-color .2s,box-shadow .2s}
.help-card:hover{border-color:rgba(10,110,79,.2);box-shadow:0 4px 20px rgba(0,0,0,.06)}
.help-tag{font-family:'Inter',sans-serif;font-size:9px;letter-spacing:.14em;text-transform:uppercase;color:var(--green);border:1px solid rgba(10,110,79,.2);padding:4px 10px;border-radius:2px;display:inline-block;margin-bottom:20px;font-weight:500}
.help-card h3{font-family:'Fraunces',serif;font-size:20px;font-weight:300;color:var(--ink);margin-bottom:12px;line-height:1.25}
.help-body{font-family:'Inter',sans-serif;font-size:13px;color:var(--muted);line-height:1.75;margin-bottom:20px}
.help-outputs{display:flex;flex-direction:column;gap:6px}
.help-output{font-family:'Inter',sans-serif;font-size:12px;color:var(--muted);display:flex;align-items:flex-start;gap:8px;line-height:1.55}
.help-output::before{content:'→';color:var(--green);flex-shrink:0;font-weight:600}

/* ── Proof / case study ──────────────────────────────────────────────────────── */
.proof{padding:88px 0;background:#fff;border-bottom:1px solid var(--border)}
.proof-inner{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center}
.proof-left h2{font-size:clamp(34px,3.5vw,48px);margin-bottom:16px}
.proof-left p{font-family:'Inter',sans-serif;font-size:16px;color:var(--muted);line-height:1.8;margin-bottom:28px}
.proof-stat{display:flex;align-items:baseline;gap:8px;margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.proof-stat:last-child{border-bottom:none}
.pstat-num{font-family:'Fraunces',serif;font-size:36px;font-weight:200;color:var(--green);line-height:1}
.pstat-lbl{font-family:'Inter',sans-serif;font-size:13px;color:var(--muted);line-height:1.5}
.proof-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--r);padding:32px;position:relative;overflow:hidden}
.proof-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--green)}
.proof-query{font-family:'Inter',sans-serif;font-size:13px;color:var(--muted);font-style:italic;margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--border);line-height:1.7}
.proof-finding{font-family:'Inter',sans-serif;font-size:13px;color:var(--muted);padding:8px 0;border-bottom:1px solid var(--border);display:flex;gap:10px;line-height:1.6;align-items:flex-start}
.proof-finding:last-child{border-bottom:none}
.proof-finding::before{content:'✓';color:var(--green);flex-shrink:0;font-weight:600}
.proof-meta{font-family:'Inter',sans-serif;font-size:10px;color:var(--muted2);letter-spacing:.06em;margin-top:16px}

/* ── Bottom CTA ─────────────────────────────────────────────────────────────── */
.cta-section{padding:88px 0;background:var(--dark)}
.cta-inner{text-align:center;max-width:680px;margin:0 auto}
.cta-inner h2{font-size:clamp(36px,3.5vw,54px);color:#fff;margin-bottom:16px}
.cta-inner p{font-family:'Inter',sans-serif;font-size:16px;color:rgba(255,255,255,.5);line-height:1.8;margin-bottom:36px}
.cta-btns{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.cta-btn{font-family:'Inter',sans-serif;font-size:14px;font-weight:500;color:#fff;background:var(--green);padding:14px 32px;border-radius:var(--r);transition:background .2s}
.cta-btn:hover{background:var(--green-d)}
.cta-ghost{font-family:'Inter',sans-serif;font-size:14px;color:rgba(255,255,255,.6);border:1px solid rgba(255,255,255,.15);padding:13px 28px;border-radius:var(--r);transition:all .2s}
.cta-ghost:hover{border-color:rgba(255,255,255,.35);color:#fff}

/* ── Footer ─────────────────────────────────────────────────────────────────── */
footer{background:var(--dark);border-top:1px solid rgba(255,255,255,.07);padding:28px 48px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.fl{font-family:'Fraunces',serif;font-size:18px;font-weight:300;color:#fff}
.fl em{font-style:normal;color:var(--green)}
.fls{display:flex;gap:20px;flex-wrap:wrap}
.fls a{font-family:'Inter',sans-serif;font-size:13px;color:rgba(255,255,255,.35);transition:color .2s}
.fls a:hover{color:rgba(255,255,255,.7)}
.fc{font-family:'Inter',sans-serif;font-size:12px;color:rgba(255,255,255,.2)}

/* ── Scroll reveal ───────────────────────────────────────────────────────────── */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .3s ease,transform .3s ease}
[data-reveal].revealed{opacity:1;transform:none}
[data-reveal-delay="1"]{transition-delay:.05s}
[data-reveal-delay="2"]{transition-delay:.1s}
[data-reveal-delay="3"]{transition-delay:.15s}
[data-reveal-delay="4"]{transition-delay:.2s}

/* ── Responsive ──────────────────────────────────────────────────────────────── */
@media(max-width:768px){
  nav{padding:0 20px}
  .n-links{display:none}
  .container{padding:0 20px}
  .kpi-strip,.challenge-grid,.helps-grid,.proof-inner{grid-template-columns:1fr}
  footer{padding:24px 20px;flex-direction:column;align-items:flex-start}
}