/* Pauline Abu — Professional Website
   Theme aligned to CV (teal + slate), but more "site" than "CV".
*/
:root{
  --ink:#0b1220;
  --muted:#475569;
  --line:#cbd5e1;
  --bg:#f8fafc;
  --paper:#ffffff;

  --accent:#0f766e;      /* teal */
  --accent-deep:#0b4f4a;
  --accent-soft:#ecfeff;
  --accent-border:#a5f3fc;

  --shadow: 0 12px 36px rgba(2,6,23,.10);
  --radius: 18px;

  --max: 1120px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Source Sans 3",system-ui,-apple-system,"Segoe UI",Arial,sans-serif;
  color:var(--ink);
  background:
    radial-gradient(1100px 760px at 18% -10%, rgba(15,118,110,.14), transparent 60%),
    radial-gradient(980px 620px at 92% 10%, rgba(165,243,252,.18), transparent 55%),
    radial-gradient(900px 600px at 35% 105%, rgba(15,118,110,.10), transparent 58%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a{color:inherit}
img{max-width:100%; display:block}
.container{max-width:var(--max); margin:0 auto; padding:0 18px}
.muted{color:var(--muted)}
.small{font-size:.92rem}
.tiny{font-size:.86rem}
hr.sep{border:none; border-top:1px solid rgba(203,213,225,.7); margin:16px 0}

.sr-only{
  position:absolute !important;
  width:1px; height:1px;
  padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0);
  white-space:nowrap; border:0;
}

.skip-link{
  position:absolute;
  left:-999px; top:10px;
  background:var(--paper);
  border:1px solid var(--line);
  padding:10px 12px;
  border-radius:12px;
  z-index:9999;
}
.skip-link:focus{left:10px}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(248,250,252,.80);
  backdrop-filter: blur(10px);
  border-bottom:1px solid rgba(203,213,225,.6);
}
.nav-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
}
.brand-mark{
  width:36px; height:36px;
  border-radius:14px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-deep) 100%);
  box-shadow: 0 10px 20px rgba(15,118,110,.18);
  position:relative;
}
.brand-mark::after{
  content:"";
  position:absolute; inset:9px 8px 10px 8px;
  border:2px solid rgba(236,254,255,.92);
  border-radius:11px;
  transform: rotate(6deg);
  opacity:.85;
}
.brand-text strong{display:block; line-height:1.05; font-size:1.08rem}
.brand-text span{display:block; color:var(--muted); font-size:.92rem; margin-top:1px}

.site-nav{
  display:flex;
  align-items:center;
  gap:8px;
}
.site-nav a{
  text-decoration:none;
  padding:9px 10px;
  border-radius:12px;
  color:var(--muted);
  font-weight:800;
  font-size:.98rem;
}
.site-nav a:hover{background:rgba(15,118,110,.08); color:var(--ink)}
.site-nav a.active{color:var(--ink); background:rgba(15,118,110,.10)}
.site-nav .btn{margin-left:4px}

.nav-toggle{
  display:none;
  border:1px solid rgba(203,213,225,.95);
  background:var(--paper);
  border-radius:14px;
  padding:10px 12px;
  box-shadow: 0 6px 18px rgba(2,6,23,.06);
}
.burger{
  display:block; width:20px; height:2px; background:var(--ink);
  position:relative; border-radius:10px;
}
.burger::before,.burger::after{
  content:""; position:absolute; left:0; width:20px; height:2px;
  background:var(--ink); border-radius:10px;
}
.burger::before{top:-6px}
.burger::after{top:6px}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 14px;
  border-radius:14px;
  border:1px solid rgba(15,118,110,.25);
  background: linear-gradient(180deg, rgba(15,118,110,.12), rgba(15,118,110,.06));
  color:var(--ink);
  font-weight:900;
  text-decoration:none;
}
.btn:hover{border-color:rgba(15,118,110,.45)}
.btn.ghost{
  background:var(--paper);
  border-color:rgba(203,213,225,.95);
  color:var(--muted);
}
.btn.ghost:hover{color:var(--ink)}
.btn.small{padding:8px 12px; border-radius:13px; font-size:.95rem}
.btn-row{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}

/* Hero */
.hero{padding:34px 0 18px}
.hero-grid{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap:18px;
  align-items:start;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 11px;
  border:1px solid var(--accent-border);
  background:var(--accent-soft);
  color:#083344;
  border-radius:999px;
  font-weight:900;
  font-size:.92rem;
  letter-spacing:.01em;
}
.kicker-dot{
  width:8px; height:8px;
  border-radius:999px;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(15,118,110,.15);
}
.hero h1{
  margin:12px 0 0;
  font-size:2.35rem;
  line-height:1.07;
  letter-spacing:-.02em;
}
.lead{
  font-size:1.12rem;
  color:var(--muted);
  margin:12px 0 0;
  line-height:1.58;
}
.hero-cta{margin-top:16px; display:flex; gap:10px; flex-wrap:wrap}

.hero-card{
  background:rgba(255,255,255,.92);
  border:1px solid rgba(203,213,225,.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.portrait{
  position:relative;
  aspect-ratio: 1/1;
  background: #0b4f4a;

  /* Corporate circular portrait */
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid #e6e6e6;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}
.portrait img{width:100%; height:100%; object-fit:cover; border-radius: 50%}
.portrait::after{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(circle at 25% 18%, rgba(165,243,252,.28), transparent 55%),
    radial-gradient(circle at 85% 78%, rgba(15,118,110,.25), transparent 55%),
    linear-gradient(180deg, rgba(0,0,0,.02), rgba(0,0,0,.18));
  border-radius: 50%;
  pointer-events:none;
}
.hero-card-body{padding:14px 16px 16px}
.card-title{margin:0; font-size:1.1rem}
.ticks{margin:10px 0 0 18px; padding:0}
.ticks li{margin:0 0 8px; color:var(--muted); line-height:1.48}
.ticks.compact li{margin-bottom:6px}
.card-actions{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}

/* Strip */
.strip{padding:10px 0 6px}
.strip-grid{display:grid; grid-template-columns:repeat(3, 1fr); gap:10px}
.strip-item{
  background:rgba(255,255,255,.86);
  border:1px solid rgba(203,213,225,.8);
  border-radius:16px;
  padding:14px;
  box-shadow: 0 8px 20px rgba(2,6,23,.05);
}
.strip-item h3{margin:0; font-size:1.07rem}
.strip-item p{margin:8px 0 0; color:var(--muted); line-height:1.55}

/* Sections */
.section{padding:24px 0}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px;
}
.section-head h2{margin:0; font-size:1.55rem}
.section-head p{margin:6px 0 0}
.section-head .right{display:flex; gap:10px; flex-wrap:wrap}

.cards{display:grid; grid-template-columns: repeat(3, 1fr); gap:12px; margin-top:14px}
.cards.two{grid-template-columns: repeat(2, 1fr)}
.card{
  background:rgba(255,255,255,.92);
  border:1px solid rgba(203,213,225,.85);
  border-radius: var(--radius);
  padding:14px;
  box-shadow: 0 8px 22px rgba(2,6,23,.06);
}
.card h3{margin:0; font-size:1.15rem}
.card p{margin:10px 0 0; color:var(--muted); line-height:1.6}

.tags{display:flex; flex-wrap:wrap; gap:8px; margin-top:12px}
.tags span{
  font-size:.9rem;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(15,118,110,.08);
  border:1px solid rgba(15,118,110,.18);
  color:#0b4f4a;
  font-weight:900;
}

/* Articles list */
.list{display:grid; grid-template-columns: 1.25fr .75fr; gap:12px; margin-top:14px}
.list-main, .list-side{display:flex; flex-direction:column; gap:12px}
.article-card{
  background:rgba(255,255,255,.92);
  border:1px solid rgba(203,213,225,.85);
  border-radius: var(--radius);
  padding:14px;
  box-shadow: 0 8px 22px rgba(2,6,23,.06);
}
.article-card a{text-decoration:none}
.article-meta{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  align-items:center;
  color:var(--muted);
  font-weight:800;
  font-size:.92rem;
}
.pill{
  display:inline-flex;
  padding:6px 10px;
  border-radius:999px;
  border:1px solid rgba(15,118,110,.18);
  background:rgba(15,118,110,.08);
  color:var(--accent-deep);
  font-weight:900;
  font-size:.9rem;
}
.article-title{margin:10px 0 0; font-size:1.25rem; letter-spacing:-.01em}
.article-excerpt{margin:8px 0 0; color:var(--muted); line-height:1.6}

/* CTA */
.cta{padding:6px 0 30px}
.cta-box{
  display:flex;
  gap:14px;
  align-items:center;
  justify-content:space-between;
  background: linear-gradient(180deg, rgba(15,118,110,.14), rgba(15,118,110,.06));
  border:1px solid rgba(15,118,110,.22);
  border-radius: var(--radius);
  padding:16px;
  box-shadow: 0 10px 26px rgba(2,6,23,.06);
}
.cta-box h2{margin:0; font-size:1.42rem}
.cta-actions{display:flex; gap:10px; flex-wrap:wrap}

/* Page hero */
.page-hero{padding:28px 0 12px}
.page-hero-grid{display:grid; grid-template-columns: 1.2fr .8fr; gap:12px; align-items:start}
.page-hero h1{margin:0; font-size:2rem}
.page-hero-card{
  display:flex;
  gap:12px;
  align-items:center;
  background:rgba(255,255,255,.90);
  border:1px solid rgba(203,213,225,.85);
  border-radius: var(--radius);
  padding:12px;
  box-shadow: 0 8px 22px rgba(2,6,23,.06);
}
.mini-portrait{
  width:78px; height:78px;
  border-radius:18px;
  overflow:hidden;
  border:1px solid rgba(203,213,225,.8);
}
.mini-portrait img{width:100%; height:100%; object-fit:cover}

/* Timeline */
.timeline{margin-top:14px; display:grid; grid-template-columns: 1fr; gap:12px}
.role-head{display:flex; align-items:flex-start; justify-content:space-between; gap:12px}
.role-title{margin:0; font-size:1.22rem}
.role-dates{
  font-weight:900;
  color:var(--accent-deep);
  background: rgba(15,118,110,.08);
  border:1px solid rgba(15,118,110,.18);
  padding:8px 10px;
  border-radius:999px;
  white-space:nowrap;
}

/* Contact */
.contact-list{display:flex; flex-direction:column; gap:10px; margin-top:10px}
.contact-item{
  display:flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  padding:10px 12px;
  border-radius:16px;
  border:1px solid rgba(203,213,225,.85);
  background: rgba(255,255,255,.92);
}
.contact-item:hover{border-color: rgba(15,118,110,.35)}
.contact-icon{
  width:40px; height:40px;
  border-radius:16px;
  display:flex; align-items:center; justify-content:center;
  background: rgba(15,118,110,.10);
  border:1px solid rgba(15,118,110,.20);
}
.copy-card{
  background: rgba(248,250,252,.85);
  border:1px solid rgba(203,213,225,.85);
  border-radius: 16px;
  padding:12px;
}

/* Footer */
.site-footer{
  border-top:1px solid rgba(203,213,225,.75);
  background:rgba(255,255,255,.55);
  padding:18px 0 12px;
}
.footer-grid{display:grid; grid-template-columns: 1.2fr .6fr .8fr; gap:12px; align-items:start}
.footer-brand{display:flex; gap:10px; align-items:center}
.footer-links, .footer-contact{display:flex; flex-direction:column; gap:8px}
.footer-links a,.footer-contact a{color:var(--muted); text-decoration:none}
.footer-links a:hover,.footer-contact a:hover{color:var(--ink)}
.footer-bottom{padding-top:10px}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .strip-grid{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr}
  .cards.two{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .page-hero-grid{grid-template-columns:1fr}
  .list{grid-template-columns:1fr}
  .role-head{flex-direction:column; align-items:flex-start}
}
@media (max-width: 820px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    right:18px; top:62px;
    background:rgba(255,255,255,.97);
    border:1px solid rgba(203,213,225,.9);
    border-radius:18px;
    box-shadow: var(--shadow);
    padding:10px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    min-width: 240px;
  }
  .site-nav.open{display:flex}
  .site-nav a{padding:10px 12px}
}

/* Article enhancements */
.article-hero{
  border:1px solid rgba(203,213,225,.85);
  border-radius:18px;
  overflow:hidden;
  box-shadow: 0 12px 34px rgba(2,6,23,.10);
  background: #0b4f4a;
}
.article-hero .img{
  position:relative;
  height: 320px;
  background-size: cover;
  background-position: center;
}
.article-hero .img::after{
  content:"";
  position:absolute; inset:0;
  background:
    radial-gradient(circle at 25% 18%, rgba(165,243,252,.22), transparent 55%),
    radial-gradient(circle at 85% 78%, rgba(15,118,110,.22), transparent 55%),
    linear-gradient(180deg, rgba(0,0,0,.12), rgba(0,0,0,.50));
}
.article-hero .inner{
  position:absolute; inset:0;
  display:flex;
  align-items:flex-end;
  padding:18px;
}
.article-hero .titlebox{
  max-width: 860px;
  color: #ffffff;
}
.article-hero h1{margin:0; font-size:2.1rem; line-height:1.08}
.article-hero .meta{
  margin-top:10px;
  display:flex; gap:10px; flex-wrap:wrap;
  color: rgba(255,255,255,.88);
  font-weight:800;
}
.article-hero .meta .chip{
  display:inline-flex;
  padding:7px 10px;
  border-radius:999px;
  border:1px solid rgba(255,255,255,.22);
  background: rgba(255,255,255,.10);
}
.article-body{
  max-width: 900px;
  margin: 0 auto;
}
.article-body .card p{line-height:1.75}
.article-diagrams{
  margin-top: 12px;
  display:grid;
  grid-template-columns:1fr;
  gap:12px;
}
.diagram{
  border:1px solid rgba(203,213,225,.85);
  border-radius:18px;
  overflow:hidden;
  background: rgba(255,255,255,.92);
  box-shadow: 0 8px 22px rgba(2,6,23,.06);
}
.diagram img{width:100%; height:auto; background:#fff}
.diagram .cap{padding:10px 12px; color: var(--muted); font-weight:700}
.filterbar{
  display:flex; gap:10px; flex-wrap:wrap;
  margin-top: 14px;
}
.filterbar input, .filterbar select{
  padding:10px 12px;
  border-radius:14px;
  border:1px solid rgba(203,213,225,.95);
  background: rgba(255,255,255,.92);
  font-weight:700;
  color: var(--ink);
}
.article-grid{
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:12px;
  margin-top: 12px;
}
.article-card2{
  background:rgba(255,255,255,.92);
  border:1px solid rgba(203,213,225,.85);
  border-radius: var(--radius);
  overflow:hidden;
  box-shadow: 0 8px 22px rgba(2,6,23,.06);
}
.article-card2 .cover{
  height: 160px;
  background-size: cover;
  background-position:center;
}
.article-card2 .body{padding:14px}
.article-card2 h3{margin:0; font-size:1.15rem}
.article-card2 p{margin:8px 0 0; color:var(--muted); line-height:1.6}
@media (max-width: 980px){
  .article-hero .img{height: 260px}
  .article-grid{grid-template-columns:1fr}
}

/* Homepage portrait sizing */
.home-portrait{
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}
@media (max-width: 980px){
  .home-portrait{ width: 100%; }
}