/*
Theme Name: CAAIRO
Theme URI: https://caairo.com
Author: CAAIRO
Description: Custom theme for CAAIRO — Centre for the Assessment of Artificial Intelligence Risk, a non-profit organisation. Clean, trustworthy design built for research publications and public education.
Version: 1.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: caairo
*/

/* ============ Variables ============ */
:root{
  --navy:#0B2545;
  --navy-light:#13315C;
  --teal:#1B998B;
  --teal-dark:#137A6F;
  --bg:#F7F9FB;
  --card:#FFFFFF;
  --text:#1D2939;
  --text-muted:#5A6472;
  --border:#E3E8EF;
  --gold:#C9A227;
  --radius:10px;
  --maxw:1140px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  background:var(--bg);
  color:var(--text);
  line-height:1.6;
  font-size:17px;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--teal-dark);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{font-family:var(--font);color:var(--navy);line-height:1.25;margin:0 0 .6em;}
h1{font-size:2.6rem;}
h2{font-size:1.9rem;}
h3{font-size:1.3rem;}
p{margin:0 0 1.1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.btn{
  display:inline-block;
  padding:12px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:.95rem;
  transition:all .15s ease;
  border:2px solid transparent;
}
.btn-primary{background:var(--teal);color:#fff;}
.btn-primary:hover{background:var(--teal-dark);text-decoration:none;}
.btn-outline{background:transparent;border-color:#fff;color:#fff;}
.btn-outline:hover{background:#fff;color:var(--navy);text-decoration:none;}
.btn-navy{background:var(--navy);color:#fff;}
.btn-navy:hover{background:var(--navy-light);text-decoration:none;}

/* ============ Non-profit badge ============ */
.np-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  background:rgba(201,162,39,.12);
  color:var(--gold);
  border:1px solid rgba(201,162,39,.4);
  padding:5px 14px;
  border-radius:999px;
  font-size:.78rem;
  font-weight:700;
  letter-spacing:.03em;
  text-transform:uppercase;
}
.top-bar{
  background:var(--navy);
  color:#cfd8e6;
  font-size:.85rem;
  padding:8px 0;
}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;}
.top-bar a{color:#cfd8e6;}

/* ============ Header ============ */
.site-header{
  background:#fff;
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100;
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;
  padding-top:16px;padding-bottom:16px;
}
.site-logo{font-weight:800;font-size:1.4rem;color:var(--navy);letter-spacing:.02em;}
.site-logo span{color:var(--teal);}
.main-nav ul{list-style:none;display:flex;gap:28px;margin:0;padding:0;}
.main-nav a{color:var(--text);font-weight:600;font-size:.95rem;}
.main-nav a:hover{color:var(--teal-dark);text-decoration:none;}
.nav-toggle{display:none;background:none;border:none;font-size:1.6rem;cursor:pointer;color:var(--navy);}

@media (max-width:820px){
  .nav-toggle{display:block;}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;background:#fff;
    border-bottom:1px solid var(--border);padding:12px 24px;
  }
  .main-nav.open{display:block;}
  .main-nav ul{flex-direction:column;gap:14px;}
}

/* ============ Hero ============ */
.hero{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-light) 100%);
  color:#fff;padding:90px 0;
}
.hero .container{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;}
.hero h1{color:#fff;font-size:2.9rem;}
.hero p.lead{font-size:1.15rem;color:#cfd8e6;max-width:520px;}
.hero .badge-row{margin-bottom:18px;}
.hero-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap;}
.hero-visual{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);
  border-radius:var(--radius);padding:32px;
}
.hero-visual ul{margin:0;padding-left:20px;color:#dfe6f0;}
.hero-visual li{margin-bottom:10px;}
@media (max-width:820px){.hero .container{grid-template-columns:1fr;}}

/* ============ Sections ============ */
.section{padding:72px 0;}
.section-alt{background:#fff;}
.section-head{max-width:680px;margin:0 auto 44px;text-align:center;}
.section-head p{color:var(--text-muted);}
.eyebrow{
  color:var(--teal-dark);font-weight:700;font-size:.82rem;
  text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px;display:block;
}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
@media (max-width:820px){.grid-3,.grid-2{grid-template-columns:1fr;}}

.card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:30px;
}
.card h3{margin-bottom:10px;}
.card p{color:var(--text-muted);margin-bottom:0;}

/* ============ Mission / non-profit statement block ============ */
.mission-block{
  background:#fff;border:1px solid var(--border);border-left:5px solid var(--gold);
  border-radius:var(--radius);padding:34px 38px;margin:0 0 40px;
}
.mission-block h3{margin-bottom:12px;}
.mission-block p:last-child{margin-bottom:0;}

/* ============ Papers / Publications ============ */
.papers-list{display:grid;grid-template-columns:1fr;gap:20px;}
.paper-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 30px;display:flex;justify-content:space-between;gap:24px;align-items:flex-start;flex-wrap:wrap;
}
.paper-card .paper-meta{color:var(--text-muted);font-size:.85rem;margin-bottom:8px;}
.paper-card h3{margin-bottom:8px;font-size:1.15rem;}
.paper-card p{color:var(--text-muted);margin-bottom:0;max-width:640px;}
.paper-card .paper-actions{flex-shrink:0;}
.paper-tag{
  display:inline-block;background:rgba(27,153,139,.1);color:var(--teal-dark);
  font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;
  padding:3px 10px;border-radius:999px;margin-right:6px;
}

/* ============ Blog / Insights ============ */
.post-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
.post-card img{aspect-ratio:16/9;object-fit:cover;}
.post-card .post-card-body{padding:22px;}
.post-card .post-date{color:var(--text-muted);font-size:.82rem;}
.post-card h3{margin:8px 0 10px;font-size:1.15rem;}

/* ============ Footer ============ */
.site-footer{background:var(--navy);color:#cfd8e6;padding:56px 0 26px;margin-top:60px;}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:16px;}
.site-footer a{color:#cfd8e6;}
.site-footer a:hover{color:#fff;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.12);}
.footer-grid ul{list-style:none;margin:0;padding:0;}
.footer-grid li{margin-bottom:10px;font-size:.92rem;}
.footer-np{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);
  border-radius:var(--radius);padding:18px 22px;font-size:.88rem;color:#dfe6f0;
  margin-top:16px;
}
.footer-bottom{
  padding-top:20px;display:flex;justify-content:space-between;align-items:center;
  font-size:.82rem;color:#9fb0c8;flex-wrap:wrap;gap:10px;
}
@media (max-width:820px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}}

/* ============ Generic page ============ */
.page-content{padding:64px 0;}
.page-content .container{max-width:820px;}
.page-content h1{margin-bottom:24px;}

/* ============ CTA band ============ */
.cta-band{background:var(--teal);color:#fff;padding:56px 0;text-align:center;}
.cta-band h2{color:#fff;}
.cta-band p{color:rgba(255,255,255,.9);}