/* Dr. Mark A. Staples
   Colors: purple #8b668b · steel blue #36648B · headings #1a1a1a · text #333333
   Fonts:  Space Grotesk (headings) · Inter (body) */

:root{
  --purple:#8b668b;
  --blue:#36648B;
  --blue-dk:#2a4f6e;
  --ink:#1a1a1a;
  --text:#333333;
  --panel:#f5f6f8;
  --panel2:#eef1f5;
  --line:#e3e6eb;
  --muted:#6b7280;
  --grad-dark:linear-gradient(135deg,#36648B,#333333);
  --grad-duo:linear-gradient(135deg,#8b668b,#36648B);
  --maxw:1140px;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',system-ui,sans-serif;
  font-size:17px;line-height:1.7;font-weight:400;
  color:var(--text);background:#fff;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--blue);text-decoration:none;transition:color .15s ease;}
a:hover{color:var(--purple);}
h1,h2,h3,h4,h5,h6{font-family:'Space Grotesk','Inter',sans-serif;color:var(--ink);line-height:1.2;font-weight:600;}
strong,b{font-weight:600;color:var(--ink);}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.narrow{max-width:820px;}
section{scroll-margin-top:80px;}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font-family:'Space Grotesk',sans-serif;font-weight:500;
  font-size:15px;letter-spacing:.3px;padding:12px 24px;border-radius:8px;cursor:pointer;transition:all .18s ease;border:none;}
.btn-grad{background:var(--grad-duo);color:#fff;background-size:140% 140%;}
.btn-grad:hover{color:#fff;filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 10px 24px rgba(54,100,139,.3);}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1.5px solid rgba(255,255,255,.5);}
.btn-ghost:hover{background:#fff;color:var(--blue);}
.btn-outline{background:none;color:var(--blue);border:1.5px solid var(--blue);}
.btn-outline:hover{background:var(--blue);color:#fff;}

/* ---------- Header / nav ---------- */
header.site{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;
  max-width:var(--maxw);margin:0 auto;padding:14px 24px;}
.brand{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:20px;color:var(--ink);letter-spacing:-.3px;}
.brand span{background:var(--grad-duo);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
nav.main ul{list-style:none;display:flex;align-items:center;gap:26px;}
nav.main a{font-family:'Space Grotesk',sans-serif;font-size:15px;font-weight:500;color:var(--ink);position:relative;padding:4px 0;}
nav.main a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--grad-duo);transition:width .2s ease;}
nav.main a:hover{color:var(--blue);}
nav.main a:hover::after{width:100%;}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;color:var(--ink);}
.menu-toggle svg{width:28px;height:28px;}

/* ---------- Hero ---------- */
.hero{background:var(--grad-dark);color:#fff;position:relative;overflow:hidden;padding:84px 0 76px;}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(139,102,139,.45),transparent 55%);}
.hero-inner{position:relative;display:grid;grid-template-columns:280px 1fr;gap:54px;align-items:center;}
.hero-photo img{width:280px;height:280px;object-fit:cover;border-radius:50%;border:5px solid rgba(255,255,255,.25);
  box-shadow:0 20px 50px rgba(0,0,0,.35);}
.hero .eyebrow{font-family:'Space Grotesk',sans-serif;text-transform:uppercase;letter-spacing:3px;font-size:14px;
  color:#cdd9e6;margin-bottom:12px;}
.hero h1{font-size:clamp(38px,4vw + 14px,60px);color:#fff;letter-spacing:-1px;line-height:1.05;}
.hero .current{display:inline-block;margin-top:16px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  padding:7px 16px;border-radius:30px;font-size:14.5px;color:#fff;}
.hero .current strong{color:#fff;}
.hero .tagline{margin-top:22px;font-size:19px;line-height:1.5;color:#e8edf3;max-width:560px;font-style:italic;
  border-left:3px solid var(--purple);padding-left:18px;}
.hero-actions{margin-top:28px;display:flex;gap:14px;flex-wrap:wrap;}

/* ---------- Highlights ---------- */
.highlights{margin-top:-44px;position:relative;z-index:5;}
.highlight-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.hl-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px 24px;text-align:center;
  box-shadow:0 16px 40px rgba(26,30,40,.08);}
.hl-card .ic{width:46px;height:46px;margin:0 auto 14px;color:var(--purple);}
.hl-card .big{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:30px;color:var(--ink);line-height:1;}
.hl-card .lbl{margin-top:8px;font-size:15px;color:var(--muted);line-height:1.4;}

/* ---------- Section scaffolding ---------- */
.section{padding:78px 0;}
.section--panel{background:var(--panel);}
.section-head{margin-bottom:40px;}
.section-head.center{text-align:center;}
.kicker{display:inline-block;font-family:'Space Grotesk',sans-serif;text-transform:uppercase;letter-spacing:2.5px;
  font-size:13px;font-weight:600;color:var(--purple);margin-bottom:10px;}
.section-head h2{font-size:clamp(28px,2vw + 16px,40px);letter-spacing:-.5px;}
.section-head .rule{width:60px;height:4px;border-radius:3px;background:var(--grad-duo);margin-top:16px;}
.section-head.center .rule{margin-left:auto;margin-right:auto;}
.lead{font-size:19px;color:var(--ink);line-height:1.6;}

/* ---------- About ---------- */
.about p{margin-bottom:18px;}
.about .more{max-height:0;overflow:hidden;transition:max-height .5s ease;}
.about.open .more{max-height:5000px;}
.toggle-more{margin-top:6px;background:none;border:none;color:var(--blue);font-family:'Space Grotesk',sans-serif;
  font-weight:600;font-size:15px;cursor:pointer;display:inline-flex;align-items:center;gap:6px;}
.toggle-more:hover{color:var(--purple);}

/* ---------- Timeline (Academic / Experience) ---------- */
.timeline{position:relative;margin-left:6px;}
.timeline::before{content:"";position:absolute;left:23px;top:6px;bottom:6px;width:2px;background:var(--line);}
.tl-item{position:relative;padding:0 0 30px 70px;}
.tl-item:last-child{padding-bottom:0;}
.tl-logo{position:absolute;left:0;top:0;width:48px;height:48px;border-radius:10px;background:#fff;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;overflow:hidden;z-index:2;}
.tl-logo img{max-width:34px;max-height:34px;width:auto;}
.tl-item h3{font-size:19px;margin-bottom:3px;}
.tl-item .org{color:var(--blue);font-weight:600;font-size:15.5px;}
.tl-item .yrs{display:inline-block;margin-top:6px;font-size:13px;font-family:'Space Grotesk',sans-serif;
  color:var(--muted);background:var(--panel);border:1px solid var(--line);padding:3px 12px;border-radius:20px;}
.tl-item .note{font-size:15px;color:var(--text);margin-top:8px;}

/* ---------- Accordions ---------- */
details.acc{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:14px;overflow:hidden;}
details.acc[open]{box-shadow:0 10px 30px rgba(26,30,40,.06);}
details.acc summary{cursor:pointer;list-style:none;padding:18px 22px;font-family:'Space Grotesk',sans-serif;
  font-weight:600;font-size:17px;color:var(--ink);display:flex;align-items:center;justify-content:space-between;gap:14px;}
details.acc summary::-webkit-details-marker{display:none;}
details.acc summary::after{content:"";flex:0 0 auto;width:11px;height:11px;border-right:2px solid var(--purple);
  border-bottom:2px solid var(--purple);transform:rotate(45deg);transition:transform .2s ease;margin-top:-4px;}
details.acc[open] summary::after{transform:rotate(-135deg);margin-top:2px;}
details.acc summary:hover{color:var(--blue);}
.acc-body{padding:4px 22px 22px;}
.acc-body p{margin-bottom:12px;}
.acc-body ul{list-style:none;margin:6px 0 12px;}
.acc-body ul li{position:relative;padding:5px 0 5px 22px;font-size:15.5px;line-height:1.6;}
.acc-body ul li::before{content:"";position:absolute;left:0;top:13px;width:7px;height:7px;border-radius:50%;background:var(--purple);}
.acc-body ul ul{margin:4px 0 4px;}
.acc-body ul ul li{font-size:14.5px;color:var(--muted);}
.acc-body ul ul li::before{background:var(--blue);width:6px;height:6px;}
.acc-body h4{font-family:'Space Grotesk',sans-serif;color:var(--blue);font-size:16px;margin:14px 0 6px;}
.acc-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 30px;}

/* group label above a set of accordions */
.grouplabel{font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:14px;text-transform:uppercase;
  letter-spacing:1.5px;color:var(--muted);margin:26px 0 12px;}
.grouplabel:first-child{margin-top:0;}

/* ---------- Quotes ---------- */
.quote-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
.qcard{background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;position:relative;
  box-shadow:0 10px 30px rgba(26,30,40,.05);}
.qcard::before{content:"\201C";position:absolute;top:6px;left:18px;font-family:Georgia,serif;font-size:70px;
  line-height:1;color:var(--purple);opacity:.18;}
.qcard p{font-size:18px;line-height:1.55;color:var(--ink);position:relative;margin-bottom:16px;}
.qcard .by{display:flex;align-items:center;gap:12px;}
.qcard .by img{width:44px;height:44px;border-radius:50%;object-fit:cover;}
.qcard .by .nm{font-family:'Space Grotesk',sans-serif;font-weight:600;color:var(--ink);font-size:15px;}
.qcard .by .role{font-size:13px;color:var(--muted);}
.qcard.feature{grid-column:1 / -1;background:var(--grad-duo);border:none;color:#fff;}
.qcard.feature::before{color:#fff;opacity:.25;}
.qcard.feature p{color:#fff;font-size:22px;}
.qcard.feature .nm{color:#fff;}

/* ---------- Blog ---------- */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.post-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:26px;display:flex;flex-direction:column;
  box-shadow:0 8px 24px rgba(26,30,40,.05);transition:transform .16s ease,box-shadow .16s ease;}
.post-card:hover{transform:translateY(-5px);box-shadow:0 18px 40px rgba(26,30,40,.12);}
.post-card .cat{align-self:flex-start;font-family:'Space Grotesk',sans-serif;font-size:12px;font-weight:600;text-transform:uppercase;
  letter-spacing:1px;color:#fff;background:var(--grad-duo);padding:4px 11px;border-radius:20px;margin-bottom:14px;}
.post-card h3{font-size:20px;line-height:1.25;margin-bottom:10px;}
.post-card h3 a{color:var(--ink);}
.post-card h3 a:hover{color:var(--blue);}
.post-card .date{font-size:13px;color:var(--muted);margin-bottom:12px;}
.post-card p{font-size:15px;color:var(--text);margin-bottom:16px;}
.post-card .read{margin-top:auto;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:14px;color:var(--blue);}
.blog-foot{text-align:center;margin-top:38px;}

/* ---------- Contact ---------- */
.contact{background:var(--grad-dark);color:#fff;}
.contact .section-head h2{color:#fff;}
.contact .kicker{color:#cdb4cd;}
.contact-card{max-width:600px;margin:0 auto;text-align:center;background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);border-radius:16px;padding:46px 36px;}
.contact-card .ic{width:50px;height:50px;margin:0 auto 16px;color:#fff;}
.contact-card .email{font-family:'Space Grotesk',sans-serif;font-size:24px;color:#fff;display:inline-block;margin:6px 0 22px;}
.contact-card .email:hover{color:#e6d3e6;}
.socials{display:flex;justify-content:center;gap:14px;}
.socials a{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:8px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:14px;font-weight:500;}
.socials a:hover{background:#fff;color:var(--blue);}
.socials svg{width:18px;height:18px;}

/* ---------- Footer ---------- */
footer.site{background:#14171c;color:#9aa0ab;padding:30px 0;text-align:center;font-size:14px;}
footer.site a{color:#c3c8d1;}
footer.site .fsocials{display:flex;justify-content:center;gap:18px;margin-bottom:14px;}

/* ---------- Blog post article pages ---------- */
.article-hero{background:var(--grad-dark);color:#fff;padding:60px 0 50px;}
.article-hero .crumbs{font-size:14px;color:#cdd9e6;margin-bottom:14px;}
.article-hero .crumbs a{color:#fff;}
.article-hero .cat{display:inline-block;font-family:'Space Grotesk',sans-serif;font-size:12px;font-weight:600;
  text-transform:uppercase;letter-spacing:1px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);
  padding:4px 12px;border-radius:20px;margin-bottom:16px;}
.article-hero h1{color:#fff;font-size:clamp(28px,3vw + 12px,46px);letter-spacing:-.5px;max-width:860px;}
.article-hero .date{margin-top:14px;color:#dbe3ec;font-size:15px;}
.article{padding:54px 0 70px;}
.article .body{font-size:18px;line-height:1.8;}
.article .body p{margin-bottom:20px;}
.article .body h2{font-size:26px;margin:34px 0 14px;}
.article .body h3{font-size:21px;margin:28px 0 12px;color:var(--blue);}
.article .body h4{font-size:18px;margin:22px 0 10px;}
.article .body ul,.article .body ol{margin:0 0 20px 24px;}
.article .body li{margin-bottom:8px;}
.article .body blockquote{border-left:4px solid var(--purple);background:var(--panel);padding:16px 22px;
  border-radius:0 10px 10px 0;margin:0 0 22px;font-size:20px;font-style:italic;color:var(--ink);}
.article .body a{text-decoration:underline;text-underline-offset:2px;}
.article .backlink{display:inline-flex;align-items:center;gap:8px;margin-top:30px;font-family:'Space Grotesk',sans-serif;
  font-weight:600;color:var(--blue);}

/* ---------- Blog index ---------- */
.archive{padding:54px 0 70px;}
.arch-list{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  nav.main{position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    box-shadow:0 14px 30px rgba(26,30,40,.1);display:none;}
  nav.main.open{display:block;}
  nav.main ul{flex-direction:column;align-items:stretch;gap:0;}
  nav.main li{width:100%;}
  nav.main a{display:block;padding:15px 24px;border-bottom:1px solid var(--line);}
  nav.main a::after{display:none;}
  .menu-toggle{display:block;}
  header.site{position:relative;}
  .hero-inner{grid-template-columns:1fr;gap:30px;text-align:center;justify-items:center;}
  .hero .tagline{margin-left:auto;margin-right:auto;text-align:left;}
  .hero-actions{justify-content:center;}
  .highlight-grid{grid-template-columns:1fr;gap:16px;}
  .highlights{margin-top:-30px;}
  .blog-grid{grid-template-columns:1fr;}
  .quote-grid,.acc-grid,.arch-list{grid-template-columns:1fr;}
}
@media(max-width:560px){
  .hero-photo img{width:200px;height:200px;}
  .section{padding:54px 0;}
}