@import url('https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,300;0,400;0,700;1,300&family=Playfair+Display:ital,wght@0,400;0,600;1,400&display=swap');

:root{
  --blue:#1a8bbf;--blue2:#1470a0;--blue3:#0d5580;--blue-light:#e8f4f9;
  --green:#4da63a;--green2:#3a8a29;--green3:#256619;--green-light:#eaf5e7;
  --teal:#159b86;--dark:#0d2235;--dark2:#163347;
  --gray:#6b7a8d;--light:#f7f9f8;--white:#ffffff;
  --border:#d5e8df;--gold:#c8a84b;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Lato',sans-serif;background:var(--white);color:var(--dark);overflow-x:hidden}

/* CONCLUDED BANNER */
.concluded-banner{background:#f8f5ee;border-bottom:2px solid var(--gold);text-align:center;padding:0.55rem 1rem;position:fixed;top:0;width:100%;z-index:1100}
.concluded-banner span{color:#8a6a10;font-size:0.75rem;letter-spacing:0.15em;text-transform:uppercase;font-weight:700}

/* NAV */
nav.main-nav{position:fixed;top:34px;width:100%;z-index:999;background:rgba(255,255,255,0.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);box-shadow:0 2px 20px rgba(0,0,0,0.06)}
.nav-inner{max-width:1260px;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;text-decoration:none}
.nav-title{font-size:1rem;font-weight:700;color:var(--dark);letter-spacing:0.04em;line-height:1}
.nav-title span{color:var(--green2)}
.nav-sub{font-size:0.58rem;color:var(--gray);letter-spacing:0.07em;text-transform:uppercase;margin-top:2px}
.nav-links{display:flex;list-style:none}
.nav-links a{color:var(--gray);text-decoration:none;font-size:0.7rem;letter-spacing:0.06em;text-transform:uppercase;padding:0.4rem 0.6rem;transition:color 0.2s;font-weight:700;border-bottom:2px solid transparent}
.nav-links a:hover,.nav-links a.active{color:var(--green2)}
.nav-links a.active{border-bottom-color:var(--green2)}
.nav-archive{background:rgba(200,168,75,0.12);border:1px solid rgba(200,168,75,0.35);color:var(--gold);font-size:0.62rem;letter-spacing:0.1em;text-transform:uppercase;padding:0.22rem 0.65rem;border-radius:12px;font-weight:700;white-space:nowrap;margin-left:0.5rem}

/* PAGE WRAPPER */
.page-wrap{padding-top:98px}

/* CONTAINERS */
.container{max-width:1260px;margin:0 auto;padding:0 2rem}
section.section{padding:4rem 0}

/* TYPOGRAPHY */
.sec-label{font-size:0.67rem;letter-spacing:0.22em;text-transform:uppercase;color:var(--green2);margin-bottom:0.45rem;font-weight:700}
.sec-title{font-family:'Playfair Display',serif;font-size:2.3rem;font-weight:400;color:var(--dark);line-height:1.18;margin-bottom:1rem}
.sec-title em{font-style:italic;color:var(--blue2)}
.sec-title em.g{color:var(--green2)}
.acc-line{width:44px;height:3px;background:linear-gradient(90deg,var(--blue),var(--green));margin-bottom:1.4rem;border-radius:2px}
.sec-desc{color:var(--gray);line-height:1.8;max-width:680px;font-size:0.93rem}

/* PAGE HERO */
.page-hero{min-height:260px;position:relative;display:flex;align-items:flex-end;padding:0 2rem 2.5rem;overflow:hidden}
.page-hero-img{position:absolute;inset:0;background-size:cover;background-position:center}
.page-hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,22,40,0.85) 0%,rgba(10,22,40,0.45) 100%)}
.page-hero-content{position:relative;max-width:1260px;margin:0 auto;width:100%}
.page-hero-tag{display:inline-block;border:1px solid rgba(77,166,58,0.5);color:#7ee85c;font-size:0.66rem;letter-spacing:0.2em;text-transform:uppercase;padding:0.28rem 0.8rem;border-radius:12px;margin-bottom:0.8rem;font-weight:700}
.page-hero h1{font-family:'Playfair Display',serif;font-size:clamp(1.8rem,4vw,2.8rem);font-weight:400;color:white;line-height:1.15}
.page-hero h1 em{font-style:italic;color:#7ee85c}
.concluded-tag{display:inline-block;background:rgba(200,168,75,0.15);border:1px solid rgba(200,168,75,0.4);color:var(--gold);font-size:0.62rem;letter-spacing:0.12em;text-transform:uppercase;padding:0.2rem 0.55rem;border-radius:10px;font-weight:700;margin-left:0.75rem;vertical-align:middle}

/* SIDEBAR LAYOUT */
.with-sidebar{display:grid;grid-template-columns:1fr 288px;gap:3rem;max-width:1260px;margin:0 auto;padding:3.5rem 2rem}
.sidebar{display:flex;flex-direction:column;gap:1.25rem}

/* WIDGETS */
.widget{background:white;border:1px solid var(--border);border-radius:8px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,0.04)}
.widget-head{background:var(--dark);color:white;font-size:0.67rem;letter-spacing:0.18em;text-transform:uppercase;font-weight:700;padding:0.7rem 1rem}
.widget-body{padding:1rem}
.dl-list{list-style:none}
.dl-list li{padding:0.5rem 0;border-bottom:1px solid var(--border);font-size:0.8rem;color:var(--gray);line-height:1.4}
.dl-list li:last-child{border-bottom:none}
.dl-list li strong{color:var(--dark);display:block;font-size:0.75rem;margin-bottom:1px}
.dl-list li.past{opacity:0.5;text-decoration:line-through}
.dl-list li.conf{color:var(--gold);font-weight:700;opacity:1;text-decoration:none}
.topics-mini{list-style:none}
.topics-mini li{padding:0.38rem 0;border-bottom:1px solid var(--border);font-size:0.78rem;color:var(--gray);display:flex;align-items:center;gap:0.45rem}
.topics-mini li::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--green);flex-shrink:0}
.topics-mini li:last-child{border-bottom:none}
.cinfo p{font-size:0.8rem;color:var(--gray);margin-bottom:0.5rem;line-height:1.5}
.cinfo a{color:var(--blue2);text-decoration:none}
.cinfo strong{color:var(--dark);display:block;font-size:0.68rem;letter-spacing:0.05em;text-transform:uppercase;margin-bottom:1px}

/* BUTTONS */
.btn-green{background:var(--green2);color:white;padding:0.75rem 1.75rem;font-size:0.77rem;letter-spacing:0.1em;text-transform:uppercase;border:none;cursor:pointer;font-family:'Lato',sans-serif;font-weight:700;text-decoration:none;display:inline-block;border-radius:3px;transition:background 0.2s}
.btn-green:hover{background:var(--green3)}
.btn-blue{background:var(--blue2);color:white;padding:0.75rem 1.75rem;font-size:0.77rem;letter-spacing:0.1em;text-transform:uppercase;border:none;cursor:pointer;font-family:'Lato',sans-serif;font-weight:700;text-decoration:none;display:inline-block;border-radius:3px;transition:background 0.2s}
.btn-blue:hover{background:var(--blue3)}
.btn-out{background:transparent;color:white;padding:0.75rem 1.75rem;font-size:0.77rem;letter-spacing:0.1em;text-transform:uppercase;border:1px solid rgba(255,255,255,0.45);cursor:pointer;font-family:'Lato',sans-serif;text-decoration:none;display:inline-block;border-radius:3px;transition:all 0.2s}
.btn-out:hover{border-color:white;background:rgba(255,255,255,0.08)}
.btn-gold{background:var(--gold);color:var(--dark);padding:0.75rem 1.75rem;font-size:0.77rem;letter-spacing:0.1em;text-transform:uppercase;border:none;cursor:pointer;font-family:'Lato',sans-serif;font-weight:700;text-decoration:none;display:inline-block;border-radius:3px;transition:opacity 0.2s}
.btn-gold:hover{opacity:0.88}

/* IMG DIVIDER */
.img-divider{height:260px;position:relative;overflow:hidden}
.img-divider img{width:100%;height:100%;object-fit:cover;display:block}
.img-div-overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(13,34,53,0.8) 0%,rgba(13,34,53,0.25) 100%);display:flex;align-items:center;padding:0 2rem}
.img-div-text{max-width:1260px;margin:0 auto;width:100%}
.img-div-text h2{font-family:'Playfair Display',serif;font-size:1.75rem;color:white;font-weight:400;max-width:460px;line-height:1.25}
.img-div-text p{color:rgba(255,255,255,0.58);margin-top:0.6rem;font-size:0.88rem;max-width:400px;line-height:1.65}

/* FORM STYLES */
.form-wrap{background:white;border:1px solid var(--border);border-radius:10px;padding:2rem;box-shadow:0 4px 24px rgba(26,139,191,0.07)}
.form-title{font-family:'Playfair Display',serif;font-size:1.3rem;color:var(--dark);margin-bottom:0.3rem;font-weight:400}
.form-sub{font-size:0.78rem;color:var(--gray);margin-bottom:1.5rem;line-height:1.5}
.form-sec-title{font-size:0.64rem;letter-spacing:0.18em;text-transform:uppercase;color:var(--green2);font-weight:700;margin-bottom:0.75rem;padding-bottom:0.35rem;border-bottom:2px solid var(--green-light);margin-top:1.25rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:0.75rem;margin-bottom:0.75rem}
.form-row.full{grid-template-columns:1fr}
.form-group{display:flex;flex-direction:column;gap:0.28rem}
.form-group label{font-size:0.73rem;font-weight:700;color:var(--dark)}
.form-group label .req{color:#e53e3e;margin-left:2px}
.form-group input,.form-group select,.form-group textarea{padding:0.58rem 0.82rem;border:1px solid var(--border);border-radius:5px;font-family:'Lato',sans-serif;font-size:0.83rem;color:var(--dark);background:white;transition:border-color 0.2s,box-shadow 0.2s;outline:none;width:100%}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(77,166,58,0.1)}
.form-group textarea{resize:vertical;min-height:88px;line-height:1.55}
.form-group select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7a8d' fill='none' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 0.8rem center}
.file-zone{border:2px dashed var(--border);border-radius:8px;padding:1.4rem;text-align:center;cursor:pointer;transition:border-color 0.2s,background 0.2s;position:relative}
.file-zone:hover,.file-zone.drag{border-color:var(--green);background:var(--green-light)}
.file-zone input[type="file"]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.file-zone-icon{font-size:1.8rem;margin-bottom:0.4rem}
.file-zone-text{font-size:0.8rem;color:var(--gray);line-height:1.5}
.file-zone-text strong{color:var(--green2)}
.file-name{margin-top:0.6rem;font-size:0.78rem;color:var(--green3);font-weight:700;display:none}
.form-alert{display:none;padding:0.85rem 1rem;border-radius:6px;font-size:0.82rem;margin-bottom:1rem;font-weight:700}
.form-alert.ok{background:#eaf7e8;border:1px solid #a8dba2;color:var(--green3)}
.form-alert.err{background:#fdf0f0;border:1px solid #f5b8b8;color:#b91c1c}
.btn-submit{background:linear-gradient(120deg,var(--blue2),var(--green2));color:white;padding:0.85rem 2.2rem;font-size:0.8rem;letter-spacing:0.1em;text-transform:uppercase;border:none;cursor:pointer;font-family:'Lato',sans-serif;font-weight:700;border-radius:4px;transition:opacity 0.2s}
.btn-submit:hover{opacity:0.9}
.btn-submit:disabled{opacity:0.5;cursor:not-allowed}
.spinner{display:none;width:16px;height:16px;border:2px solid rgba(255,255,255,0.3);border-top-color:white;border-radius:50%;animation:spin 0.7s linear infinite;margin-left:8px}
@keyframes spin{to{transform:rotate(360deg)}}

/* FOOTER */
footer{background:var(--dark);padding:3rem 2rem 1.5rem;border-top:2px solid var(--green);margin-top:0}
.footer-inner{max-width:1260px;margin:0 auto}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2.5rem;margin-bottom:2rem}
.footer-brand{font-family:'Playfair Display',serif;font-size:1.2rem;color:white;font-weight:400}
.footer-brand span{color:var(--green)}
.footer-tagline{font-size:0.76rem;color:rgba(255,255,255,0.28);line-height:1.65;max-width:260px;margin-top:0.45rem}
.footer-col-title{font-size:0.63rem;letter-spacing:0.2em;text-transform:uppercase;color:var(--green);margin-bottom:0.75rem;font-weight:700}
.footer-links{list-style:none}
.footer-links a{color:rgba(255,255,255,0.3);text-decoration:none;font-size:0.77rem;display:block;margin-bottom:0.35rem;transition:color 0.2s}
.footer-links a:hover{color:var(--green)}
.footer-bottom{padding-top:1.25rem;border-top:1px solid rgba(255,255,255,0.07);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:0.75rem}
.footer-copy{font-size:0.71rem;color:rgba(255,255,255,0.2)}
.footer-emails{font-size:0.72rem;color:rgba(255,255,255,0.3)}
.footer-emails a{color:var(--green);text-decoration:none}

/* HAMBURGER NAV */
.nav-burger{display:none;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;cursor:pointer;padding:4px;margin-left:0.5rem;flex-shrink:0}
.nav-burger span{display:block;width:22px;height:2px;background:var(--dark);border-radius:2px;transition:transform 0.25s,opacity 0.25s}
.nav-burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-burger.open span:nth-child(2){opacity:0}
.nav-burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* SPONSORS SECTION */
.sponsors-section{background:var(--light);border-top:1px solid var(--border);padding:3rem 0}
.sponsors-grid{display:flex;flex-wrap:wrap;gap:1.5rem;align-items:center;justify-content:center;margin-top:1.75rem}
.sponsor-logo{background:white;border:1px solid var(--border);border-radius:8px;padding:1rem 1.75rem;display:flex;align-items:center;justify-content:center;min-width:140px;height:70px;transition:box-shadow 0.2s,border-color 0.2s}
.sponsor-logo:hover{box-shadow:0 4px 16px rgba(0,0,0,0.08);border-color:var(--green)}
.sponsor-logo img{max-height:44px;max-width:120px;object-fit:contain;filter:grayscale(30%);transition:filter 0.2s}
.sponsor-logo:hover img{filter:grayscale(0%)}
.sponsor-logo-text{font-weight:700;font-size:0.8rem;color:var(--gray);text-align:center;line-height:1.3}
.sponsor-tier-label{width:100%;text-align:center;font-size:0.63rem;letter-spacing:0.2em;text-transform:uppercase;color:var(--gray);font-weight:700;margin-bottom:0.5rem;margin-top:0.5rem}
.sponsor-tier-label.gold-tier{color:var(--gold)}
.sponsor-tier-label.silver-tier{color:#888}

/* GALLERY PAGE */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1rem;margin-top:2rem}
.gallery-item{border-radius:8px;overflow:hidden;position:relative;aspect-ratio:4/3;cursor:pointer;background:var(--light);border:1px solid var(--border)}
.gallery-item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform 0.35s}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-item-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(13,34,53,0.7) 0%,transparent 55%);opacity:0;transition:opacity 0.25s;display:flex;align-items:flex-end;padding:0.85rem}
.gallery-item:hover .gallery-item-overlay{opacity:1}
.gallery-item-cap{color:white;font-size:0.78rem;font-weight:700;line-height:1.3}
.gallery-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem;color:var(--gray)}
.gallery-placeholder-icon{font-size:2rem;opacity:0.4}
.gallery-placeholder-text{font-size:0.75rem;text-align:center;line-height:1.5}
/* Lightbox */
.lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.92);z-index:9000;align-items:center;justify-content:center}
.lightbox.active{display:flex}
.lightbox img{max-width:90vw;max-height:88vh;object-fit:contain;border-radius:4px}
.lightbox-close{position:absolute;top:1rem;right:1.5rem;color:white;font-size:2rem;cursor:pointer;background:none;border:none;line-height:1}
.lightbox-prev,.lightbox-next{position:absolute;top:50%;transform:translateY(-50%);background:rgba(255,255,255,0.12);border:none;color:white;font-size:1.5rem;cursor:pointer;padding:0.75rem 1rem;border-radius:4px;transition:background 0.2s}
.lightbox-prev{left:1rem}.lightbox-next{right:1rem}
.lightbox-prev:hover,.lightbox-next:hover{background:rgba(255,255,255,0.22)}

/* PROGRAMME PAGE */
.prog-day{margin-bottom:3rem}
.prog-day-header{background:var(--dark);color:white;border-radius:8px 8px 0 0;padding:0.9rem 1.4rem;display:flex;align-items:center;gap:1rem}
.prog-day-num{background:var(--green);color:white;font-size:0.7rem;letter-spacing:0.12em;text-transform:uppercase;font-weight:700;padding:0.22rem 0.65rem;border-radius:3px;white-space:nowrap}
.prog-day-title{font-family:'Playfair Display',serif;font-size:1.1rem;color:white;font-weight:400}
.prog-day-date{font-size:0.78rem;color:rgba(255,255,255,0.5);margin-left:auto;white-space:nowrap}
.prog-sessions{border:1px solid var(--border);border-top:none;border-radius:0 0 8px 8px;overflow:hidden}
.prog-session{display:grid;grid-template-columns:90px 1fr;border-bottom:1px solid var(--border)}
.prog-session:last-child{border-bottom:none}
.prog-session-time{background:var(--light);padding:0.85rem 0.9rem;font-size:0.72rem;font-weight:700;color:var(--blue2);border-right:1px solid var(--border);display:flex;align-items:center;justify-content:center;text-align:center;line-height:1.3}
.prog-session-body{padding:0.85rem 1.1rem}
.prog-session-type{display:inline-block;font-size:0.6rem;letter-spacing:0.12em;text-transform:uppercase;font-weight:700;padding:0.15rem 0.5rem;border-radius:3px;margin-bottom:0.3rem}
.pst-opening{background:rgba(200,168,75,0.1);color:var(--gold)}
.pst-keynote{background:var(--blue-light);color:var(--blue2)}
.pst-session{background:var(--green-light);color:var(--green3)}
.pst-break{background:#f0f0f0;color:#888}
.pst-workshop{background:rgba(21,155,134,0.1);color:var(--teal)}
.pst-closing{background:rgba(200,168,75,0.1);color:var(--gold)}
.prog-session-title{font-size:0.85rem;font-weight:700;color:var(--dark);margin-bottom:0.15rem;line-height:1.3}
.prog-session-detail{font-size:0.76rem;color:var(--gray);line-height:1.45}
.prog-session.break-row{opacity:0.65}

@media(max-width:960px){
  .with-sidebar{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
  nav.main-nav .nav-links{display:none}
  nav.main-nav .nav-links.open{
    display:flex;flex-direction:column;
    position:fixed;top:98px;left:0;right:0;
    background:white;border-bottom:2px solid var(--border);
    padding:0.75rem 1.5rem 1rem;
    box-shadow:0 8px 28px rgba(0,0,0,0.1);z-index:998;
    max-height:calc(100vh - 98px);overflow-y:auto
  }
  nav.main-nav .nav-links.open li{border-bottom:1px solid var(--border)}
  nav.main-nav .nav-links.open a{padding:0.65rem 0;display:block;font-size:0.8rem}
  .nav-burger{display:flex}
  .prog-session{grid-template-columns:70px 1fr}
  .gallery-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}
}
@media(max-width:600px){.footer-top{grid-template-columns:1fr}.form-row{grid-template-columns:1fr}}