/* ==========================================================================
   TAREA — Renewable Energy Week 2026
   Design tokens
   Palette: forest green (host colour), sky blue, sun orange — pulled from
   the REW brand mark's diagonal band. Warm off-white base, charcoal ink.
   Type: Sora (display) + Inter (body/UI) — both geometric sans, distinct
   enough in weight/width to read as two voices without clashing.
   Motif: the diagonal three-colour band from the TAREA brand mark is reused
   throughout as the structural section-divider, instead of generic cards.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;600;700;800&family=Inter:wght@400;500;600;700&display=swap');

:root{
  --green:        #0F6B3C;
  --green-dark:   #0A4B29;
  --green-tint:   #E7F3EC;
  --blue:         #1E7FC4;
  --blue-dark:    #145a8c;
  --blue-tint:    #E7F1FA;
  --orange:       #E8792B;
  --orange-dark:  #C25E18;
  --orange-tint:  #FCEEE1;
  --ink:          #1B211D;
  --ink-soft:     #4A5650;
  --paper:        #FAFAF7;
  --paper-alt:    #F1F0E8;
  --line:         #DFDCD0;
  --white:        #FFFFFF;

  --font-display: 'Sora', 'Segoe UI', sans-serif;
  --font-body:    'Inter', 'Segoe UI', sans-serif;

  --radius: 6px;
  --shadow: 0 10px 30px -14px rgba(15,44,26,0.25);
  --container: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ font-family:var(--font-display); line-height:1.15; margin:0 0 .5em; color:var(--green-dark); }
h1{ font-weight:800; }
h2{ font-weight:700; }
h3{ font-weight:700; }
p{ margin:0 0 1em; max-width:70ch; }
:focus-visible{ outline:3px solid var(--blue); outline-offset:2px; }
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
}

.container{ width:100%; max-width:var(--container); margin:0 auto; padding:0 24px; }
.section{ padding:72px 0; }
.section-alt{ background:var(--paper-alt); }
.section-head{ max-width:640px; margin-bottom:40px; }
.section-head p{ color:var(--ink-soft); font-size:1.05rem; }
.kicker{ display:inline-flex; align-items:center; gap:10px; font-weight:600; color:var(--orange-dark); margin-bottom:10px; font-size:.95rem; }
.kicker::before{ content:""; width:22px; height:3px; background:var(--orange); border-radius:2px; }

/* ---- Signature diagonal band (from the REW brand mark) ---- */
.band{
  height:14px;
  background: linear-gradient(100deg,
    var(--orange) 0 30%,
    transparent 30% 33%,
    var(--white) 33% 36%,
    transparent 36% 39%,
    var(--blue) 39% 55%,
    transparent 55% 58%,
    var(--white) 58% 61%,
    transparent 61% 64%,
    var(--green) 64% 100%);
}
.band-thin{ height:6px; }

/* ---- Buttons ---- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:14px 26px; border-radius:var(--radius); font-family:var(--font-body);
  font-weight:600; font-size:.98rem; border:2px solid transparent; cursor:pointer;
  transition:transform .15s ease, background .15s ease, border-color .15s ease, color .15s ease;
}
.btn:hover{ transform:translateY(-2px); }
.btn-green{ background:var(--green); color:var(--white); }
.btn-green:hover{ background:var(--green-dark); }
.btn-orange{ background:var(--orange); color:var(--white); }
.btn-orange:hover{ background:var(--orange-dark); }
.btn-outline{ background:transparent; border-color:var(--white); color:var(--white); }
.btn-outline:hover{ background:var(--white); color:var(--green-dark); }
.btn-outline-dark{ background:transparent; border-color:var(--green); color:var(--green-dark); }
.btn-outline-dark:hover{ background:var(--green); color:var(--white); }
.btn-block{ width:100%; }
.btn-row{ display:flex; flex-wrap:wrap; gap:14px; }

/* ---- Header ---- */
.site-header{
  position:fixed; top:0; left:0; right:0; z-index:1000;
  background:transparent; transition:background .25s ease, box-shadow .25s ease;
  padding:18px 0;
}
.site-header.is-scrolled{ background:var(--white); box-shadow:0 4px 20px rgba(0,0,0,.08); padding:10px 0; }
.header-inner{ display:flex; align-items:center; justify-content:space-between; gap:20px; }
.brand{ display:flex; align-items:center; gap:12px; font-family:var(--font-display); font-weight:800; font-size:1.15rem; color:var(--white); }
.site-header.is-scrolled .brand{ color:var(--green-dark); }
.brand-mark{ width:42px; height:42px; border-radius:10px; background:var(--green); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.brand-mark svg{ width:24px; height:24px; }
.brand small{ display:block; font-family:var(--font-body); font-weight:500; font-size:.68rem; letter-spacing:.03em; color:var(--orange); }

.main-nav{ display:flex; align-items:center; gap:6px; }
.main-nav a{
  color:var(--white); font-weight:600; font-size:.95rem; padding:10px 14px; border-radius:5px;
  transition:background .15s ease, color .15s ease;
}
.site-header.is-scrolled .main-nav a{ color:var(--ink); }
.main-nav a:hover, .main-nav a.active{ background:rgba(255,255,255,.15); }
.site-header.is-scrolled .main-nav a:hover, .site-header.is-scrolled .main-nav a.active{ background:var(--green-tint); color:var(--green-dark); }
.header-cta{ display:flex; align-items:center; gap:10px; }
.header-cta .btn{ padding:10px 18px; font-size:.9rem; }

.nav-toggle{ display:none; width:44px; height:44px; border:none; background:rgba(255,255,255,.15); border-radius:8px; cursor:pointer; }
.site-header.is-scrolled .nav-toggle{ background:var(--paper-alt); }
.nav-toggle span, .nav-toggle::before, .nav-toggle::after{ content:""; display:block; height:2px; width:22px; margin:5px auto; background:var(--white); transition:.2s; }
.site-header.is-scrolled .nav-toggle span, .site-header.is-scrolled .nav-toggle::before, .site-header.is-scrolled .nav-toggle::after{ background:var(--ink); }

/* ---- Hero ---- */
.hero{
  position:relative; min-height:92vh; display:flex; align-items:center;
  background:linear-gradient(180deg, rgba(10,32,20,.78), rgba(10,32,20,.62)), var(--green-dark);
  background-size:cover; background-position:center;
  color:var(--white); overflow:hidden;
}
.hero .slides{ position:absolute; inset:0; z-index:-1; }
.hero .slides img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; opacity:0; transition:opacity 1.4s ease; }
.hero .slides img.is-active{ opacity:1; }
.hero-inner{ padding-top:80px; max-width:760px; }
.hero .kicker{ color:var(--orange); }
.hero h1{ color:var(--white); font-size:clamp(2.2rem, 5vw, 3.6rem); }
.hero p.lead{ color:rgba(255,255,255,.88); font-size:1.15rem; max-width:56ch; }
.hero-meta{ display:flex; flex-wrap:wrap; gap:28px; margin:32px 0; }
.hero-meta div{ border-left:3px solid var(--orange); padding-left:12px; }
.hero-meta strong{ display:block; font-family:var(--font-display); font-size:1.05rem; }
.hero-meta span{ font-size:.85rem; color:rgba(255,255,255,.75); }

/* ---- Stat strip ---- */
.stat-strip{ background:var(--green); color:var(--white); padding:36px 0; }
.stat-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; }
.stat-grid strong{ display:block; font-family:var(--font-display); font-size:2.1rem; font-weight:800; }
.stat-grid span{ font-size:.85rem; color:rgba(255,255,255,.85); }

/* ---- Cards / grids ---- */
.grid{ display:grid; gap:28px; }
.grid-2{ grid-template-columns:1fr 1fr; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }

.info-card{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius); padding:28px; }
.info-card .icon{ width:46px; height:46px; border-radius:10px; display:flex; align-items:center; justify-content:center; margin-bottom:16px; }
.info-card .icon svg{ width:24px; height:24px; }
.icon-green{ background:var(--green-tint); color:var(--green); }
.icon-blue{ background:var(--blue-tint); color:var(--blue); }
.icon-orange{ background:var(--orange-tint); color:var(--orange-dark); }
.info-card h3{ font-size:1.1rem; }
.info-card p{ color:var(--ink-soft); font-size:.95rem; margin-bottom:0; }

/* ---- Timeline (event programme — a genuine day sequence) ---- */
.timeline{ position:relative; border-left:3px solid var(--line); margin-left:10px; padding-left:36px; }
.timeline-item{ position:relative; padding-bottom:44px; }
.timeline-item:last-child{ padding-bottom:0; }
.timeline-item::before{
  content:""; position:absolute; left:-45px; top:4px; width:16px; height:16px; border-radius:50%;
  background:var(--white); border:3px solid var(--orange);
}
.timeline-day{ font-family:var(--font-display); font-weight:700; color:var(--orange-dark); font-size:.9rem; margin-bottom:4px; }
.timeline-item h3{ margin-bottom:8px; }
.timeline-item ul{ margin-top:10px; }
.timeline-item li{ position:relative; padding-left:18px; color:var(--ink-soft); margin-bottom:6px; font-size:.95rem; }
.timeline-item li::before{ content:""; position:absolute; left:0; top:.6em; width:6px; height:6px; background:var(--blue); border-radius:50%; }

/* ---- Pricing tables ---- */
.price-table{ width:100%; border-collapse:collapse; background:var(--white); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); }
.price-table caption{ text-align:left; font-family:var(--font-display); font-weight:700; font-size:1.05rem; padding:16px 20px; background:var(--green); color:var(--white); caption-side:top; }
.price-table th, .price-table td{ padding:14px 20px; text-align:left; border-bottom:1px solid var(--line); font-size:.95rem; }
.price-table th{ background:var(--paper-alt); font-family:var(--font-display); color:var(--ink); }
.price-table tr:last-child td{ border-bottom:none; }
.price-table td.amount{ font-weight:700; color:var(--green-dark); }
.tag{ display:inline-block; padding:3px 10px; border-radius:20px; font-size:.75rem; font-weight:700; }
.tag-member{ background:var(--green-tint); color:var(--green-dark); }
.tag-nonmember{ background:var(--orange-tint); color:var(--orange-dark); }

/* ---- Sponsorship packages ---- */
.package-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:0; border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); }
.package-col{ background:var(--white); border-right:1px solid var(--line); }
.package-col:last-child{ border-right:none; }
.package-col.featured{ background:var(--green-tint); position:relative; }
.package-head{ padding:26px 22px; text-align:center; border-bottom:1px solid var(--line); }
.package-head .name{ font-family:var(--font-display); font-weight:800; font-size:1.15rem; }
.package-gold .name{ color:var(--orange-dark); }
.package-tanzanite .name{ color:var(--blue-dark); }
.package-platinum .name{ color:var(--green-dark); }
.package-head .price{ font-size:1.5rem; font-weight:800; color:var(--ink); margin-top:6px; }
.package-head .price small{ font-size:.7rem; font-weight:500; color:var(--ink-soft); display:block; }
.package-list{ padding:22px; }
.package-list li{ display:flex; gap:10px; align-items:flex-start; padding:9px 0; font-size:.9rem; color:var(--ink-soft); border-bottom:1px dashed var(--line); }
.package-list li:last-child{ border-bottom:none; }
.package-list li.no svg{ opacity:.15; }
.package-list svg{ width:18px; height:18px; flex-shrink:0; margin-top:2px; color:var(--green); }
.package-list li.no{ color:#B9B4A4; }
.package-cta{ padding:0 22px 26px; }

/* ---- Why exhibit/visit grid ---- */
.reason-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:20px; }
.reason{ display:flex; gap:16px; padding:20px; background:var(--white); border-radius:var(--radius); border:1px solid var(--line); }
.reason .num{ font-family:var(--font-display); font-weight:800; font-size:1.4rem; color:var(--orange); flex-shrink:0; }

/* ---- Forms ---- */
.form-card{ background:var(--white); border-radius:var(--radius); box-shadow:var(--shadow); padding:40px; }
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.field{ display:flex; flex-direction:column; gap:6px; margin-bottom:18px; }
.field.full{ grid-column:1 / -1; }
.field label{ font-weight:600; font-size:.9rem; color:var(--ink); }
.field .hint{ font-size:.78rem; color:var(--ink-soft); }
.field input[type=text], .field input[type=email], .field input[type=tel], .field input[type=url],
.field select, .field textarea{
  padding:12px 14px; border:1.5px solid var(--line); border-radius:5px; font-family:var(--font-body);
  font-size:.95rem; background:var(--paper); color:var(--ink); width:100%;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--blue); background:var(--white); }
.field textarea{ resize:vertical; min-height:100px; }
.radio-group, .checkbox-group{ display:flex; flex-wrap:wrap; gap:10px; }
.radio-pill, .checkbox-pill{
  display:flex; align-items:center; gap:8px; border:1.5px solid var(--line); border-radius:30px;
  padding:9px 16px; font-size:.88rem; cursor:pointer; background:var(--paper);
}
.radio-pill input, .checkbox-pill input{ accent-color:var(--green); }
.form-note{ background:var(--blue-tint); border-left:4px solid var(--blue); padding:14px 18px; border-radius:4px; font-size:.9rem; color:var(--blue-dark); margin-bottom:24px; }
.required::after{ content:" *"; color:var(--orange-dark); }

.alert{ padding:16px 20px; border-radius:6px; margin-bottom:24px; font-size:.95rem; }
.alert-success{ background:var(--green-tint); color:var(--green-dark); border:1px solid var(--green); }
.alert-error{ background:var(--orange-tint); color:var(--orange-dark); border:1px solid var(--orange); }

/* ---- Registration hub (choose exhibitor / sponsor / visitor) ---- */
.reg-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.reg-card{ background:var(--white); border-radius:var(--radius); overflow:hidden; box-shadow:var(--shadow); display:flex; flex-direction:column; }
.reg-card .top{ height:8px; }
.reg-card.exh .top{ background:var(--orange); }
.reg-card.spn .top{ background:var(--blue); }
.reg-card.vis .top{ background:var(--green); }
.reg-card .body{ padding:30px; flex:1; display:flex; flex-direction:column; }
.reg-card .body p{ color:var(--ink-soft); font-size:.92rem; flex:1; }

/* ---- Gallery ---- */
.gallery-grid{ display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:180px; gap:14px; }
.gallery-grid img{ width:100%; height:100%; object-fit:cover; border-radius:6px; }
.gallery-grid a:nth-child(5n+1){ grid-column:span 2; grid-row:span 2; }

/* ---- CTA banner ---- */
.cta-banner{ background:linear-gradient(120deg, var(--green-dark), var(--green)); color:var(--white); padding:60px 0; text-align:center; }
.cta-banner h2{ color:var(--white); }
.cta-banner p{ color:rgba(255,255,255,.85); margin-left:auto; margin-right:auto; }

/* ---- Footer ---- */
.site-footer{ background:#0C1F14; color:rgba(255,255,255,.82); padding:64px 0 0; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:32px; padding-bottom:44px; }
.footer-grid h4{ color:var(--white); font-size:.9rem; letter-spacing:.02em; margin-bottom:16px; }
.footer-grid a{ display:block; padding:6px 0; font-size:.9rem; color:rgba(255,255,255,.72); }
.footer-grid a:hover{ color:var(--orange); }
.footer-brand p{ color:rgba(255,255,255,.6); font-size:.9rem; }
.footer-social{ display:flex; gap:10px; margin-top:16px; }
.footer-social a{ width:36px; height:36px; border-radius:50%; background:rgba(255,255,255,.08); display:flex; align-items:center; justify-content:center; padding:0; }
.footer-social svg{ width:16px; height:16px; }
.footer-bottom{ border-top:1px solid rgba(255,255,255,.1); padding:20px 0; text-align:center; font-size:.82rem; color:rgba(255,255,255,.5); }

/* ---- Utility ---- */
.text-center{ text-align:center; }
.mt-0{ margin-top:0; }
.mb-0{ margin-bottom:0; }
.muted{ color:var(--ink-soft); }
.mx-auto{ margin-left:auto; margin-right:auto; }
.small{ font-size:.85rem; }
.badge{ display:inline-block; background:var(--orange-tint); color:var(--orange-dark); padding:4px 12px; border-radius:20px; font-size:.78rem; font-weight:700; margin-bottom:14px; }
.page-hero{ padding:150px 0 60px; background:linear-gradient(120deg, var(--green-dark), var(--green)); color:var(--white); }
.page-hero h1{ color:var(--white); margin-bottom:10px; }
.page-hero p{ color:rgba(255,255,255,.85); }
.breadcrumb{ font-size:.85rem; color:rgba(255,255,255,.7); margin-bottom:14px; }
.breadcrumb a{ color:rgba(255,255,255,.9); }

/* ==================== Responsive ==================== */
@media (max-width: 980px){
  .grid-4{ grid-template-columns:repeat(2,1fr); }
  .grid-3{ grid-template-columns:repeat(2,1fr); }
  .package-grid{ grid-template-columns:1fr; }
  .package-col{ border-right:none; border-bottom:1px solid var(--line); }
  .reg-grid{ grid-template-columns:1fr; }
  .stat-grid{ grid-template-columns:repeat(2,1fr); }
  .reason-grid{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width: 760px){
  .main-nav, .header-cta .btn-outline{ display:none; }
  .nav-toggle{ display:block; }
  body.nav-open .main-nav{
    display:flex; position:fixed; inset:0; top:0; padding:100px 30px 30px; background:var(--green-dark);
    flex-direction:column; align-items:flex-start; z-index:999;
  }
  body.nav-open .main-nav a{ color:var(--white); font-size:1.1rem; width:100%; }
  .grid-2, .form-grid{ grid-template-columns:1fr; }
  .grid-3, .grid-4{ grid-template-columns:1fr; }
  .gallery-grid{ grid-template-columns:repeat(2,1fr); }
  .gallery-grid a:nth-child(5n+1){ grid-column:span 1; grid-row:span 1; }
  .form-card{ padding:24px; }
  .stat-grid{ grid-template-columns:1fr 1fr; }
}