/* CAAIE 2027 — site stylesheet */
:root{
  --purple:#7f66ff;
  --purple-dark:#5c46d6;
  --ink:#1c1a2b;
  --muted:#5c5975;
  --bg:#ffffff;
  --bg-soft:#f6f5fb;
  --border:#e7e5f3;
  --radius:14px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Segoe UI",Helvetica,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
}
a{color:var(--purple-dark);text-decoration:none;}
a:hover{text-decoration:underline;}
img{max-width:100%;}
.container{max-width:1120px;margin:0 auto;padding:0 24px;}
section{padding:64px 0;}
section.soft{background:var(--bg-soft);}
h1,h2,h3,h4,h5{line-height:1.25;margin-top:0;}
.eyebrow{
  text-transform:uppercase;
  letter-spacing:.12em;
  font-size:12.5px;
  font-weight:700;
  color:var(--purple-dark);
  margin-bottom:8px;
}
.section-head{max-width:760px;margin:0 auto 40px;text-align:center;}
.section-head h2{font-size:32px;}
.section-head p{color:var(--muted);}

/* top bar */
.topbar{
  background:var(--ink);
  color:#fff;
  font-size:14px;
  padding:10px 0;
  text-align:center;
}
.topbar a{color:#d9d3ff;font-weight:600;}
.topbar b{color:#fff;}

/* header / nav */
header.site-header{
  border-bottom:1px solid var(--border);
  position:sticky;top:0;background:#fff;z-index:50;
}
.nav-wrap{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0;
}
.logo{display:inline-block;}
.logo a{display:block;}
.logo a > span{
  display:block;font-size:26px;line-height:.85;font-weight:700;
  color:var(--purple);text-transform:uppercase;
}
.logo a > span > span{color:var(--ink);}
.logo a > span:last-of-type{
  font-size:10px;font-weight:600;letter-spacing:.55em;
  margin-top:6px;margin-left:2px;color:var(--muted);
}
nav.main-nav ul{list-style:none;display:flex;gap:22px;margin:0;padding:0;flex-wrap:wrap;}
nav.main-nav a{color:var(--ink);font-weight:600;font-size:14.5px;}
nav.main-nav a:hover{color:var(--purple-dark);text-decoration:none;}
.nav-cta{
  background:var(--purple);color:#fff !important;padding:9px 18px;border-radius:999px;
  font-weight:700 !important;
}
.nav-cta:hover{background:var(--purple-dark);}
.menu-toggle{display:none;background:none;border:0;font-size:26px;cursor:pointer;}

/* header dropdowns */
li.has-dropdown{position:relative;}
.dropdown-toggle{display:inline-flex;align-items:center;gap:4px;cursor:pointer;}
.dropdown-toggle .caret{font-size:10px;transition:transform .2s;}
li.has-dropdown.open .dropdown-toggle .caret{transform:rotate(180deg);}
nav.main-nav ul.dropdown-menu{
  display:none;position:absolute;top:100%;left:0;margin-top:10px;
  background:#fff;border:1px solid var(--border);border-radius:12px;
  box-shadow:0 14px 34px rgba(30,20,60,.14);min-width:190px;padding:8px;z-index:60;
  list-style:none;flex-direction:column;gap:2px;
}
.dropdown-menu li{margin:0;}
.dropdown-menu a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;font-weight:600;}
.dropdown-menu a:hover{background:var(--bg-soft);text-decoration:none;}
@media (min-width:861px){
  nav.main-nav li.has-dropdown:hover ul.dropdown-menu,
  nav.main-nav li.has-dropdown.open ul.dropdown-menu{display:flex;}
}

/* hero */
.hero{
  background:linear-gradient(135deg,#2c2450 0%, #4d3aa8 45%, var(--purple) 100%);
  color:#fff;padding:70px 0 90px;position:relative;overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.14),transparent 70%);
}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;font-size:14px;}
.pill{background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.35);padding:6px 14px;border-radius:999px;}
.hero h1{font-size:44px;max-width:820px;}
.hero h1 em{font-style:normal;color:#e3d9ff;}
.hero .lede{max-width:680px;color:#e7e2ff;font-size:17px;}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}
.btn{
  display:inline-block;padding:13px 24px;border-radius:10px;font-weight:700;
  border:2px solid transparent;
}
.btn-primary{background:#fff;color:var(--purple-dark);}
.btn-primary:hover{background:#f1eeff;text-decoration:none;}
.btn-outline{border-color:rgba(255,255,255,.6);color:#fff;}
.btn-outline:hover{background:rgba(255,255,255,.12);text-decoration:none;}
.btn-solid{background:var(--purple);color:#fff;}
.btn-solid:hover{background:var(--purple-dark);text-decoration:none;color:#fff;}

/* topics grid */
.topics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:900px){.topics-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.topics-grid{grid-template-columns:1fr;}}
.topic-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;
}
.topic-card h4{margin-bottom:12px;font-size:17px;}
.topic-card ul{margin:0;padding-left:18px;color:var(--muted);font-size:14.5px;}
.topic-card li{margin-bottom:6px;}

/* dates */
.dates-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px;}
@media (max-width:960px){.dates-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.dates-grid{grid-template-columns:1fr;}}
.date-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;text-align:center;
}
.date-card .label{font-size:13px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;}
.date-card .value{font-size:20px;font-weight:700;color:var(--purple-dark);margin:10px 0 6px;}
.date-card .note{font-size:13px;color:var(--muted);}

/* committee */
.people-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
@media (max-width:900px){.people-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.people-grid{grid-template-columns:1fr;}}
.person{text-align:center;}
.person img{
  width:150px;height:150px;object-fit:cover;border-radius:50%;
  border:4px solid var(--bg-soft);margin-bottom:14px;
}
.person .role{font-size:12.5px;text-transform:uppercase;letter-spacing:.06em;color:var(--purple-dark);font-weight:700;}
.person .name{font-weight:700;font-size:16px;margin:4px 0 2px;}
.person .aff{color:var(--muted);font-size:13.5px;}

/* speakers */
.speaker-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;text-align:center;
}
.speaker-card .icon{font-size:34px;}

/* quick links */
.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
@media (max-width:900px){.quick-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.quick-grid{grid-template-columns:1fr;}}
.quick-card{
  border:1px solid var(--border);border-radius:var(--radius);padding:22px;
  background:#fff;transition:box-shadow .2s, transform .2s;display:block;
}
.quick-card:hover{box-shadow:0 10px 26px rgba(90,60,220,.12);transform:translateY(-2px);text-decoration:none;}
.quick-card h4{margin:0 0 8px;font-size:16.5px;color:var(--ink);}
.quick-card p{margin:0 0 10px;color:var(--muted);font-size:14px;}
.quick-card span.go{color:var(--purple-dark);font-weight:700;font-size:14px;}

/* sponsors */
.sponsor-row{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;}
.sponsor-box{
  width:190px;height:100px;border:1px dashed var(--border);border-radius:12px;
  display:flex;align-items:center;justify-content:center;color:var(--muted);
  font-size:13px;background:var(--bg-soft);
}

/* proceedings strip */
.proceedings{
  border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;display:flex;gap:24px;align-items:center;flex-wrap:wrap;background:#fff;
}
.proceedings img{height:70px;width:auto;}

/* footer */
footer.site-footer{background:var(--ink);color:#d9d6ea;padding:56px 0 24px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1fr;gap:30px;}
@media (max-width:860px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:520px){.footer-grid{grid-template-columns:1fr;}}
footer .logo a>span{color:#c9bcff;}
footer .logo a>span>span{color:#fff;}
footer h5{color:#fff;font-size:14px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px;}
footer p, footer li{font-size:14px;color:#b8b4cf;}
footer ul{list-style:none;padding:0;margin:0;}
footer li{margin-bottom:8px;}
footer a{color:#d9d3ff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;
  font-size:12.5px;color:#8f8ba8;text-align:center;
}
.subscribe-form{display:flex;gap:0;max-width:340px;}
.subscribe-form input{
  flex:1;padding:10px 12px;border-radius:8px 0 0 8px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);color:#fff;
}
.subscribe-form button{
  border:0;background:var(--purple);color:#fff;padding:10px 16px;border-radius:0 8px 8px 0;font-weight:700;cursor:pointer;
}

/* page hero (interior pages) */
.page-hero{
  background:linear-gradient(135deg,#2c2450 0%, var(--purple) 100%);
  color:#fff;padding:46px 0;
}
.page-hero h1{font-size:32px;margin:0;}
.page-hero p{color:#e3d9ff;margin:8px 0 0;}
.breadcrumb{font-size:13px;color:#cfc4ff;}
.breadcrumb a{color:#fff;}

table.fee-table{width:100%;border-collapse:collapse;margin:20px 0;}
table.fee-table th, table.fee-table td{border:1px solid var(--border);padding:12px 14px;text-align:left;font-size:14.5px;}
table.fee-table th{background:var(--bg-soft);}

.callout{
  background:var(--bg-soft);border-left:4px solid var(--purple);padding:16px 20px;border-radius:0 10px 10px 0;
  font-size:14.5px;margin:20px 0;
}

/* hero image carousel */
.hero{position:relative;overflow:hidden;}
.hero-carousel{
  position:absolute;inset:0;z-index:0;outline:none;
}
.carousel-track{position:absolute;inset:0;}
.carousel-slide{
  position:absolute;inset:0;opacity:0;transition:opacity .8s ease;
  background-size:cover;background-position:center;
}
.carousel-slide.active{opacity:1;}
.carousel-slide-gradient.grad-1{background:linear-gradient(135deg,#2c2450 0%, #4d3aa8 45%, var(--purple) 100%);}
.carousel-slide-gradient.grad-2{background:linear-gradient(135deg,#1f3a5f 0%, #3a5a9c 45%, #6e8fd6 100%);}
.carousel-slide-gradient.grad-3{background:linear-gradient(135deg,#4a1f5c 0%, #7a3a9c 45%, #b06ed6 100%);}
.carousel-slide-gradient.grad-4{background:linear-gradient(135deg,#1f5c4a 0%, #2f8a6e 45%, #5cc9a4 100%);}
.carousel-slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(0deg, rgba(20,15,45,.55) 0%, rgba(20,15,45,.15) 45%, rgba(20,15,45,.35) 100%);
}
.carousel-slide-link{position:absolute;inset:0;z-index:2;}
.carousel-caption{
  position:absolute;left:28px;bottom:22px;right:28px;z-index:1;
  color:#fff;font-size:14px;font-weight:600;
}
.carousel-caption .eyebrow{display:block;margin-bottom:4px;}
.carousel-credit{
  position:absolute;right:10px;bottom:6px;z-index:2;
  color:rgba(255,255,255,.75);font-size:10.5px;
  background:rgba(0,0,0,.28);padding:2px 8px;border-radius:6px;
}
.carousel-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:3;
  background:rgba(0,0,0,.28);border:0;color:#fff;width:38px;height:38px;border-radius:50%;
  cursor:pointer;font-size:14px;display:flex;align-items:center;justify-content:center;
}
.carousel-arrow:hover{background:rgba(0,0,0,.5);}
.carousel-prev{left:16px;}
.carousel-next{right:16px;}
.carousel-dots{
  position:absolute;bottom:16px;left:50%;transform:translateX(-50%);z-index:3;
  display:flex;gap:8px;
}
.carousel-dot{
  width:9px;height:9px;border-radius:50%;border:1px solid rgba(255,255,255,.8);
  background:rgba(255,255,255,.35);padding:0;cursor:pointer;
}
.carousel-dot.active{background:#fff;}
@media (max-width:640px){
  .carousel-arrow{width:32px;height:32px;}
  .carousel-caption{font-size:12.5px;}
}

/* programme / agenda */
.agenda-day{margin-bottom:36px;}
.agenda-day h3{font-size:20px;margin-bottom:16px;color:var(--purple-dark);}
.agenda-item{
  display:grid;grid-template-columns:150px 1fr;gap:18px;
  padding:16px 0;border-top:1px solid var(--border);
}
.agenda-item:last-child{border-bottom:1px solid var(--border);}
.agenda-time{font-weight:700;color:var(--ink);font-size:14.5px;}
.agenda-title{font-weight:700;font-size:15.5px;margin-bottom:2px;}
.agenda-desc{color:var(--muted);font-size:14px;}
@media (max-width:640px){
  .agenda-item{grid-template-columns:1fr;gap:4px;}
}

/* previous conferences */
.history-list{display:flex;flex-direction:column;gap:18px;}
.history-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 28px;display:grid;grid-template-columns:120px 1fr;gap:22px;align-items:start;
}
.history-card .ed-num{
  font-size:38px;font-weight:800;color:var(--purple);line-height:1;
}
.history-card .ed-year{font-size:13px;color:var(--muted);font-weight:700;margin-top:6px;}
.history-card h3{font-size:19px;margin:0 0 6px;}
.history-card .loc{color:var(--purple-dark);font-weight:600;font-size:14.5px;margin-bottom:10px;}
.history-card p{margin:0 0 8px;color:var(--muted);font-size:14.5px;}
.history-card .tbc{
  display:inline-block;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;
  color:var(--muted);background:var(--bg-soft);border-radius:999px;padding:4px 12px;margin-top:4px;
}
.history-card .card-link{
  display:inline-flex;align-items:center;gap:4px;font-size:13.5px;font-weight:700;margin-top:8px;
}
@media (max-width:640px){
  .history-card{grid-template-columns:1fr;}
  .history-card .ed-num{font-size:28px;}
}

@media (max-width: 860px){
  nav.main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:16px 24px;}
  nav.main-nav.open{display:block;}
  nav.main-nav ul{flex-direction:column;gap:14px;}
  .menu-toggle{display:block;}
  .hero h1{font-size:32px;}
  nav.main-nav ul.dropdown-menu{
    position:static;display:none;box-shadow:none;border:0;background:transparent;
    padding:6px 0 0 14px;margin-top:8px;margin-left:0;min-width:0;border-radius:0;
  }
  nav.main-nav li.has-dropdown.open ul.dropdown-menu{display:flex;}
  .dropdown-menu li{margin-bottom:8px;}
}