/* AFPICON Kerala 2027 — website styles */

@font-face {
  font-family: "League Spartan";
  src: url("../fonts/LeagueSpartan-VF.woff") format("woff");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --navy: #063D61;
  --navy-deep: #042E4A;
  --green: #579254;
  --sky: #3BA9D3;
  --teal: #1D9CAE;
  --deep: #037496;
  --aqua: #72D4D6;
  --peach: #FEDFB8;
  --orange: #EF8A2B;
  --sand: #FFF8EF;
  --ink: #1d2b36;
  --muted: #5b6b78;
  --line: #e1ebef;

  --fs-hero: clamp(2.6rem, 1.5rem + 4.4vw, 5.6rem);
  --fs-h2: clamp(2rem, 1.35rem + 2.5vw, 3.5rem);
  --fs-h3: clamp(1.3rem, 1.1rem + .8vw, 1.75rem);
  --fs-lead: clamp(1.2rem, 1rem + 1vw, 1.9rem);
  --fs-body: clamp(1rem, .95rem + .25vw, 1.15rem);
  --fs-small: clamp(.85rem, .82rem + .15vw, .95rem);

  --space: clamp(4.5rem, 3rem + 6vw, 9rem);
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --radius: clamp(14px, 1.2vw, 22px);
  --shadow: 0 18px 40px -18px rgba(6, 61, 97, .28);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: "League Spartan", system-ui, sans-serif; font-size: var(--fs-body); line-height: 1.55;
  color: var(--ink); background: #fff; font-weight: 400; overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
img, svg, canvas, iframe { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3, h4 { margin: 0; line-height: 1.05; font-weight: 800; letter-spacing: -.01em; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
sup { font-size: .6em; line-height: 0; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
svg { fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }

.container { width: min(1200px, 100% - 2 * var(--gutter)); margin-inline: auto; }
.skip { position: absolute; left: -999px; top: 8px; z-index: 100; background: var(--navy); color: #fff; padding: .6rem 1rem; border-radius: 8px; }
.skip:focus { left: 8px; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 3px; border-radius: 6px; }

/* ---------- shared bits */
.kicker { font-size: var(--fs-small); font-weight: 700; letter-spacing: .24em; text-transform: uppercase; color: var(--green); }
.kicker--aqua { color: var(--aqua); }
.kicker--peach { color: var(--peach); }
.tribar { display: block; width: 84px; height: 6px; border-radius: 6px; margin-top: 1.1rem;
  background: linear-gradient(90deg, var(--green) 0 33%, var(--sky) 33% 66%, #F2A65A 66% 100%); }
.head { text-align: center; margin-bottom: clamp(2.2rem, 4vw, 3.5rem); }
.head h2 { font-size: var(--fs-h2); color: var(--navy); margin-top: .5rem; }
.head .tribar { margin-inline: auto; }
.head--left { text-align: left; }
.head--left .tribar { margin-inline: 0; }
.muted { color: var(--muted); font-size: var(--fs-small); }
.section { position: relative; padding-block: var(--space); }
.section--sand { background: var(--sand); }

.btn { --b: var(--navy); display: inline-flex; align-items: center; gap: .6em; padding: .95em 1.6em .8em; border-radius: 999px;
  font-weight: 700; font-size: 1.02em; letter-spacing: .02em; text-decoration: none; border: 2px solid transparent; cursor: pointer;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .3s, color .3s; position: relative; isolation: isolate; overflow: hidden; }
.btn svg { width: 1.15em; height: 1.15em; transition: transform .35s var(--ease); margin-top: -.15em; }
.btn:hover { transform: translateY(-2px); }
.btn:hover svg { transform: translateX(3px); }
.btn--orange { background: var(--orange); color: #fff; box-shadow: 0 12px 26px -10px rgba(239, 138, 43, .75); }
.btn--orange::after { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,.35), transparent 55%); opacity: 0; transition: opacity .3s; }
.btn--orange:hover::after { opacity: 1; }
.btn--ghost { border-color: var(--navy); color: var(--navy); background: rgba(255,255,255,.5); backdrop-filter: blur(6px); }
.btn--ghost:hover { background: var(--navy); color: #fff; }
.btn--light { background: #fff; color: var(--navy); }
.btn--light:hover { box-shadow: 0 14px 30px -12px rgba(0,0,0,.5); }
.btn--sm { padding: .7em 1.2em .55em; font-size: .92em; }
.btn--lg { font-size: 1.15em; padding: 1.05em 2em .9em; }

/* ---------- reveal */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease) var(--d, 0s), transform .9s var(--ease) var(--d, 0s); }
.reveal.is-in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- nav */
.nav { position: fixed; inset: 0 0 auto; z-index: 50; transition: background .4s, box-shadow .4s, padding .4s; padding-block: 1rem; }
.nav.is-scrolled { background: rgba(255, 255, 255, .82); backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4);
  box-shadow: 0 6px 24px -14px rgba(6, 61, 97, .35); padding-block: .55rem; }
.nav__in { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--navy); }
.brand img { width: 50px; height: auto; }
.brand b { display: block; font-size: 1.3rem; font-weight: 800; line-height: 1; letter-spacing: -.01em; }
.brand small { display: block; font-size: .85rem; font-weight: 600; color: var(--green); line-height: 1.2; letter-spacing: .04em; }
.nav__links { display: flex; align-items: center; gap: clamp(.6rem, 1.6vw, 1.6rem); }
.nav__links a:not(.btn) { text-decoration: none; font-weight: 600; font-size: .98rem; color: var(--navy); position: relative; padding: .3rem 0; }
.nav__links a:not(.btn)::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; border-radius: 2px; background: var(--orange);
  transform: scaleX(0); transform-origin: left; transition: transform .35s var(--ease); }
.nav__links a:not(.btn):hover::after, .nav__links a.is-active::after { transform: scaleX(1); }
.burger { display: none; width: 46px; height: 46px; border: 0; border-radius: 12px; background: var(--navy); cursor: pointer; padding: 13px 12px; flex-direction: column; justify-content: space-between; }
.burger i { display: block; height: 2.5px; border-radius: 2px; background: #fff; transition: transform .35s var(--ease), opacity .25s; }
.burger[aria-expanded="true"] i:nth-child(1) { transform: translateY(7.8px) rotate(45deg); }
.burger[aria-expanded="true"] i:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] i:nth-child(3) { transform: translateY(-7.8px) rotate(-45deg); }

/* ---------- hero */
.hero { position: relative; min-height: clamp(680px, 100svh, 1000px); display: flex; align-items: center; overflow: hidden;
  background: radial-gradient(120% 80% at 75% 20%, #FFF3E2 0%, #FFFAF4 45%, #FFFFFF 75%); padding: 7.5rem 0 clamp(9rem, 16vw, 13rem); }
.hero__sun { position: absolute; width: clamp(420px, 52vw, 820px); aspect-ratio: 1; border-radius: 50%; right: -6vw; top: -4vw;
  background: radial-gradient(circle at 50% 45%, var(--peach) 0%, #FFE6C8 38%, rgba(255, 238, 216, .55) 56%, rgba(255, 246, 236, 0) 70%);
  animation: breathe 9s ease-in-out infinite; }
@keyframes breathe { 50% { scale: 1.06; filter: brightness(1.03); } }
.hero__birds { position: absolute; width: clamp(140px, 16vw, 240px); left: 46%; top: 16%; stroke: var(--navy); stroke-width: 3; opacity: .55; }
.bird { animation: flap 2.8s ease-in-out infinite, drift 18s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.b2 { animation-delay: -.9s, -6s; }
.b3 { animation-delay: -1.6s, -12s; }
@keyframes flap { 50% { transform: scaleY(.55); } }
@keyframes drift { 50% { translate: 14px -8px; } }
.hero__in { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 5rem); align-items: center; }
.eyebrow { display: inline-flex; align-items: center; gap: .6rem; font-size: var(--fs-small); font-weight: 700; letter-spacing: .08em; color: var(--deep);
  background: rgba(255, 255, 255, .75); border: 1px solid rgba(3, 116, 150, .18); padding: .55rem 1rem .45rem; border-radius: 999px; backdrop-filter: blur(6px); }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 0 rgba(239, 138, 43, .6); animation: ping 2.2s infinite; }
@keyframes ping { 70% { box-shadow: 0 0 0 10px rgba(239, 138, 43, 0); } 100% { box-shadow: 0 0 0 0 rgba(239, 138, 43, 0); } }
.hero h1 { font-size: var(--fs-hero); color: var(--navy); margin-top: 1.4rem; line-height: .98; letter-spacing: -.025em; }
.hero h1 span { display: block; background: linear-gradient(100deg, var(--deep), var(--teal) 45%, var(--sky)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__lead { font-size: var(--fs-lead); color: var(--green); font-weight: 600; margin-top: 1rem; }
.hero__meta { display: flex; flex-wrap: wrap; gap: .8rem 1.6rem; margin-top: 1.6rem; font-weight: 700; color: var(--navy); font-size: 1.08em; }
.hero__meta li { display: flex; align-items: center; gap: .55rem; }
.hero__meta svg { width: 1.35em; height: 1.35em; color: var(--teal); margin-top: -.15em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: .9rem; margin-top: 2rem; }
.countdown { margin-top: 2.4rem; }
.countdown__label { font-size: var(--fs-small); font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); }
.countdown__cells { display: flex; gap: .7rem; margin-top: .7rem; }
.countdown__cells div { min-width: clamp(64px, 7vw, 86px); padding: .75rem .4rem .55rem; text-align: center; border-radius: 16px;
  background: rgba(255, 255, 255, .7); border: 1px solid rgba(6, 61, 97, .1); box-shadow: 0 10px 24px -16px rgba(6, 61, 97, .4); backdrop-filter: blur(8px); }
.countdown b { display: block; font-size: clamp(1.7rem, 1.2rem + 1.6vw, 2.5rem); font-weight: 800; line-height: 1; color: var(--navy); font-variant-numeric: tabular-nums; }
.countdown small { display: block; margin-top: .3rem; font-size: .78rem; font-weight: 600; letter-spacing: .1em; text-transform: uppercase; color: var(--deep); }
.hero__art { display: flex; flex-direction: column; align-items: center; }
.hero__logo { width: min(100%, 520px); height: auto; filter: drop-shadow(0 30px 40px rgba(6, 61, 97, .12)); animation: float 8s ease-in-out infinite; }
@keyframes float { 50% { translate: 0 -12px; } }
.hero__partners { display: flex; align-items: center; gap: .9rem; margin-top: 1.4rem; }
.hero__partners span { font-size: .8rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
.hero__partners img { height: 46px; width: auto; border-radius: 6px; }

.waves-canvas { position: absolute; left: 0; bottom: -1px; width: 100%; height: clamp(120px, 16vw, 230px); z-index: 1; pointer-events: none; }


/* ---------- sea sections */
.sea { position: relative; color: #fff; background: radial-gradient(70% 60% at 50% 0%, #0B4F7A 0%, rgba(11, 79, 122, 0) 100%), linear-gradient(180deg, var(--navy), var(--navy-deep)); }
.flow { position: absolute; left: 0; right: 0; height: clamp(50px, 6vw, 90px); overflow: hidden; pointer-events: none; z-index: 2; }
.flow svg { position: absolute; left: 0; top: 0; width: 200%; height: 100%; max-width: none; stroke: none; animation: flow 22s linear infinite; }
.flow svg + svg { animation-duration: 34s; animation-direction: reverse; opacity: .55; }
@keyframes flow { to { transform: translateX(-50%); } }
.flow--to-white { bottom: -1px; }
.flow--to-white path { fill: #fff; }
.flow--from-white { top: -1px; }
.flow--from-white path { fill: #fff; }
.flow--from-sand { top: -1px; }
.flow--from-sand path { fill: var(--sand); }

/* ---------- about */
.about { padding: clamp(3rem, 6vw, 5rem) 0 calc(var(--space) + 3rem); margin-top: -1px; }
.about__in { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 6vw, 6rem); align-items: center; }
.about h2 { font-size: var(--fs-h2); margin: .7rem 0 1.4rem; }
.about h2 em { font-style: normal; color: var(--aqua); }
.about__copy > p:last-child { color: #cfe7ef; font-size: 1.08em; max-width: 60ch; }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.stats li { position: relative; padding: clamp(1.2rem, 2.5vw, 2rem); border-radius: var(--radius); background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(114, 212, 214, .22); overflow: hidden; }
.stats li::before { content: ""; position: absolute; width: 140px; height: 140px; right: -50px; top: -60px; border-radius: 50%;
  background: radial-gradient(circle, rgba(114, 212, 214, .25), transparent 70%); }
.stats b { font-size: clamp(2.8rem, 2rem + 3vw, 4.4rem); font-weight: 800; line-height: 1; color: #fff; font-variant-numeric: tabular-nums; }
.stats sup { font-size: 1.4rem; color: var(--orange); font-weight: 800; vertical-align: top; position: relative; top: .5rem; margin-left: .15rem; }
.stats span { display: block; margin-top: .4rem; color: var(--aqua); font-weight: 600; font-size: var(--fs-small); letter-spacing: .04em; }

/* ---------- highlights */
.highlights { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.6rem); }
.highlights li { position: relative; padding: clamp(1.5rem, 2.6vw, 2.2rem); border-radius: var(--radius); background: #fff; border: 1px solid var(--line);
  transition: transform .5s var(--ease), box-shadow .5s var(--ease), border-color .4s; overflow: hidden; isolation: isolate; }
.highlights li::after { content: ""; position: absolute; inset: auto -20% -60% -20%; height: 80%; z-index: -1; border-radius: 50%;
  background: radial-gradient(circle, rgba(114, 212, 214, .28), transparent 65%); transform: translateY(30%); opacity: 0; transition: opacity .5s, transform .6s var(--ease); }
.highlights li:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.highlights li:hover::after { opacity: 1; transform: none; }
.ico { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 18px; color: #fff;
  background: linear-gradient(150deg, var(--teal), var(--deep)); box-shadow: 0 12px 22px -12px rgba(3, 116, 150, .8); }
.ico svg { width: 28px; height: 28px; }
.highlights li:nth-child(3n+2) .ico { background: linear-gradient(150deg, #6FAE6B, var(--green)); box-shadow: 0 12px 22px -12px rgba(87, 146, 84, .8); }
.highlights li:nth-child(3n) .ico { background: linear-gradient(150deg, #F5A456, var(--orange)); box-shadow: 0 12px 22px -12px rgba(239, 138, 43, .8); }
.highlights b { display: block; margin-top: 1.2rem; font-size: var(--fs-h3); color: var(--navy); font-weight: 700; line-height: 1.1; }
.highlights p { margin-top: .5rem; color: var(--muted); }

.schedule { margin-top: var(--space); display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem, 5vw, 5rem); align-items: start; }
.schedule .muted { grid-column: 2; margin-top: -1.5rem; }
.timeline { position: relative; display: grid; gap: 1.2rem; }
.timeline::before { content: ""; position: absolute; left: 11px; top: 14px; bottom: 14px; width: 2px; background: linear-gradient(var(--teal), var(--aqua)); }
.timeline li { position: relative; padding-left: 3rem; display: grid; grid-template-columns: 1fr 1.3fr; gap: 1rem; align-items: center; }
.timeline li::before { content: ""; position: absolute; left: 3px; top: 50%; width: 18px; height: 18px; margin-top: -9px; border-radius: 50%; background: #fff; border: 4px solid var(--teal); }
.timeline__day b { display: block; font-size: var(--fs-h3); color: var(--navy); }
.timeline__day span { color: var(--muted); font-weight: 500; }
.timeline__card { display: flex; align-items: center; gap: 1rem; padding: 1.2rem 1.4rem; border-radius: var(--radius); background: var(--sand); border: 1px solid #f4e3cc; }
.timeline__card svg { width: 34px; height: 34px; color: var(--orange); flex: none; }
.timeline__card span { display: block; color: var(--muted); font-size: var(--fs-small); }
.timeline__card b { display: block; font-size: clamp(1.6rem, 1.2rem + 1.2vw, 2.2rem); color: var(--deep); line-height: 1.05; }

/* ---------- workshops */
.workshops { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(1rem, 2vw, 1.6rem); counter-reset: w; }
.workshops li { position: relative; padding: clamp(1.6rem, 2.6vw, 2.2rem); border-radius: var(--radius); background: #fff; box-shadow: 0 1px 0 #f0e2cf;
  transition: transform .5s var(--ease), box-shadow .5s var(--ease); overflow: hidden; }
.workshops li::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: linear-gradient(var(--teal), var(--sky)); transform: scaleY(.25);
  transform-origin: top; transition: transform .6s var(--ease); }
.workshops li:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.workshops li:hover::before { transform: none; }
.workshops i { font-style: normal; font-size: 3rem; font-weight: 800; line-height: 1; color: transparent; -webkit-text-stroke: 1.5px var(--aqua); }
.workshops b { display: block; margin-top: 1rem; font-size: var(--fs-h3); color: var(--navy); line-height: 1.1; }
.workshops p { margin-top: .5rem; color: var(--muted); }
.note { margin: 2rem auto 0; max-width: 680px; text-align: center; padding: .9rem 1.4rem .75rem; border-radius: 999px; background: #FFEBD3; color: #8a5a22; font-weight: 600; font-size: var(--fs-small); }

/* ---------- abstracts */
.abstracts { padding: var(--space) 0 calc(var(--space) + 3rem); overflow: hidden; }
.blobs i { position: absolute; border-radius: 42% 58% 63% 37% / 41% 44% 56% 59%; filter: blur(10px); opacity: .5; animation: morph 18s ease-in-out infinite alternate; }
.blobs i:nth-child(1) { width: 46vw; height: 46vw; max-width: 640px; max-height: 640px; right: -12vw; top: -14vw; background: radial-gradient(circle at 30% 30%, rgba(29, 156, 174, .55), rgba(29, 156, 174, 0) 70%); }
.blobs i:nth-child(2) { width: 34vw; height: 34vw; max-width: 480px; max-height: 480px; left: -10vw; bottom: -8vw; background: radial-gradient(circle at 60% 40%, rgba(114, 212, 214, .35), rgba(114, 212, 214, 0) 70%); animation-duration: 24s; }
.blobs i:nth-child(3) { width: 22vw; height: 22vw; max-width: 300px; max-height: 300px; left: 40%; top: 30%; background: radial-gradient(circle, rgba(239, 138, 43, .22), rgba(239, 138, 43, 0) 70%); animation-duration: 28s; }
@keyframes morph {
  33% { border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; translate: 3vw 2vw; rotate: 30deg; }
  66% { border-radius: 40% 60% 42% 58% / 63% 36% 64% 37%; translate: -2vw 3vw; rotate: -20deg; }
  100% { border-radius: 55% 45% 38% 62% / 45% 61% 39% 55%; translate: 1vw -2vw; rotate: 10deg; }
}
.abstracts__in { position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.abstracts h2 { font-size: clamp(2.6rem, 1.6rem + 4vw, 5rem); margin: .6rem 0 1rem; }
.abstracts h2 em { font-style: normal; color: var(--orange); }
.abstracts__intro > p:not(.kicker) { color: #cfe7ef; font-size: 1.1em; }
.subdates { display: flex; align-items: center; gap: clamp(.6rem, 2vw, 1.4rem); margin-top: 2rem; }
.subdate { flex: 1; display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: .8rem; align-items: center;
  padding: 1.1rem 1.3rem; border-radius: var(--radius); background: rgba(255, 255, 255, .07); border: 1px solid rgba(114, 212, 214, .3); }
.subdate .tag { grid-column: 1 / -1; justify-self: start; margin-bottom: .6rem; }
.subdate b { font-size: clamp(2.6rem, 2rem + 2vw, 3.6rem); line-height: .9; font-weight: 800; }
.subdate > span:last-child { font-weight: 600; line-height: 1.15; color: #cfe7ef; }
.subdates__arrow { width: 28px; height: 28px; color: var(--aqua); flex: none; }
.tag { display: inline-block; padding: .35rem .7rem .25rem; border-radius: 8px; font-size: .78rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; color: #fff; }
.tag--green { background: var(--green); }
.tag--orange { background: var(--orange); }
.mailcard { display: flex; align-items: center; gap: 1rem; margin: 1.2rem 0 1.6rem; padding: 1rem 1.3rem; border-radius: var(--radius); background: #fff; color: var(--navy);
  text-decoration: none; transition: transform .4s var(--ease), box-shadow .4s var(--ease); }
.mailcard:hover { transform: translateY(-3px); box-shadow: 0 18px 30px -16px rgba(0, 0, 0, .6); }
.mailcard__ico { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; background: var(--navy); color: #fff; flex: none; }
.mailcard__ico svg { width: 24px; height: 24px; }
.mailcard small { display: block; font-size: .78rem; font-weight: 700; letter-spacing: .16em; text-transform: uppercase; color: var(--deep); }
.mailcard b { display: block; font-size: clamp(1rem, .85rem + .6vw, 1.3rem); word-break: break-word; }
.guide { padding: clamp(1.4rem, 3vw, 2.4rem); border-radius: calc(var(--radius) + 6px); background: rgba(255, 255, 255, .96); color: var(--ink); box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .6); }
.guide h3 { font-size: var(--fs-h3); color: var(--navy); margin-bottom: 1rem; }
.guide details { border-top: 1px solid var(--line); }
.guide summary { list-style: none; cursor: pointer; display: flex; align-items: center; gap: .6rem; padding: 1.05rem 0 .95rem; font-weight: 700; font-size: 1.12em; color: var(--navy); }
.guide summary::-webkit-details-marker { display: none; }
.guide summary small { font-weight: 500; color: var(--muted); font-size: .8em; }
.guide summary svg { margin-left: auto; width: 22px; height: 22px; color: var(--teal); transition: transform .4s var(--ease); flex: none; }
.guide details[open] summary svg { transform: rotate(45deg); }
.guide ul, .guide dl { margin: 0 0 1.2rem; }
.guide li { position: relative; padding-left: 1.3rem; margin-bottom: .55rem; color: #3d5466; }
.guide li::before { content: ""; position: absolute; left: 0; top: .55em; width: 7px; height: 7px; border-radius: 50%; background: var(--teal); }
.guide dl { display: grid; grid-template-columns: max-content 1fr; gap: .5rem 1.2rem; }
.guide dt { font-weight: 700; color: var(--navy); }
.guide dd { margin: 0; color: #3d5466; }

/* ---------- registration */
.periods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 1.4rem; }
.period { position: relative; padding: 1.2rem 1.4rem 1rem; border-radius: var(--radius); color: #fff; overflow: hidden; transition: transform .5s var(--ease), box-shadow .5s; }
.period--green { background: linear-gradient(135deg, #6FAE6B, var(--green)); }
.period--deep { background: linear-gradient(135deg, var(--teal), var(--deep)); }
.period--navy { background: linear-gradient(135deg, #0B4F7A, var(--navy)); }
.period b { display: block; font-size: var(--fs-h3); }
.period span { font-weight: 500; opacity: .9; }
.period em { position: absolute; right: 1rem; top: 1rem; font-style: normal; font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase;
  background: #fff; color: var(--navy); padding: .35rem .6rem .25rem; border-radius: 999px; display: none; }
.period.is-current { transform: translateY(-4px); box-shadow: 0 18px 30px -16px rgba(6, 61, 97, .6); }
.period.is-current em { display: block; }
.period.is-past { opacity: .45; }
.swipe { display: none; font-size: var(--fs-small); color: var(--muted); text-align: right; margin-bottom: .5rem; }
.tablewrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; }
.tariff { width: 100%; border-collapse: collapse; min-width: 560px; }
.tariff th, .tariff td { padding: 1rem 1.2rem .85rem; text-align: center; border-bottom: 1px solid var(--line); }
.tariff thead th { background: #F3F8FA; color: var(--navy); font-size: var(--fs-small); letter-spacing: .14em; text-transform: uppercase; }
.tariff thead th:first-child, .tariff tbody th { text-align: left; }
.tariff tbody th { font-weight: 700; color: var(--navy); }
.tariff tbody th small { display: block; font-weight: 500; color: var(--muted); font-size: .85em; }
.tariff td { font-weight: 700; color: var(--ink); font-size: 1.08em; font-variant-numeric: tabular-nums; transition: background .3s; }
.tariff tbody tr:last-child > * { border-bottom: 0; }
.tariff tbody tr:hover > * { background: #F7FBFC; }
.tariff .is-current { background: #EAF6EE; color: var(--green); }
.tariff thead .is-current { background: var(--green); color: #fff; }
.tariff tbody tr:hover .is-current { background: #DFF0E4; }
.reg-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 1rem 1.6rem; margin-top: 2rem; text-align: center; }
.offer { position: relative; display: grid; grid-template-columns: auto 1fr; gap: clamp(1.4rem, 4vw, 3rem); align-items: center; margin-top: clamp(3rem, 6vw, 5rem);
  padding: clamp(1.6rem, 4vw, 3rem); border-radius: calc(var(--radius) + 8px); color: #fff; overflow: hidden;
  background: radial-gradient(80% 120% at 0% 0%, #0B4F7A, transparent 60%), linear-gradient(135deg, var(--navy), var(--navy-deep)); }
.offer::after { content: ""; position: absolute; right: -80px; bottom: -120px; width: 340px; height: 340px; border-radius: 50%; background: radial-gradient(circle, rgba(239, 138, 43, .35), transparent 70%); }
.offer__badge { position: relative; z-index: 1; width: clamp(140px, 16vw, 190px); aspect-ratio: 1; display: grid; place-content: center; text-align: center; color: #fff;
  background: conic-gradient(from 0deg, #F59A3E, #E06F1B, #F59A3E); border-radius: 50%; rotate: -8deg; box-shadow: 0 18px 30px -14px rgba(224, 111, 27, .8);
  animation: wobble 6s ease-in-out infinite; }
.offer__badge::before { content: ""; position: absolute; inset: 9px; border-radius: 50%; border: 2px dashed rgba(255, 255, 255, .55); }
@keyframes wobble { 50% { rotate: -2deg; scale: 1.03; } }
.offer__badge small { font-size: .8rem; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; }
.offer__badge b { font-size: clamp(1.9rem, 1.4rem + 1.6vw, 2.7rem); line-height: 1; margin: .2rem 0; }
.offer__body { position: relative; z-index: 1; }
.offer h3 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.5rem); margin: .4rem 0 1rem; }
.offer ol { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.offer li { padding: 1rem 1.2rem; border-radius: 14px; background: rgba(255, 255, 255, .08); border: 1px solid rgba(114, 212, 214, .25); color: #d9eef3; }
.offer li b { display: block; color: var(--aqua); font-size: .8rem; letter-spacing: .18em; text-transform: uppercase; margin-bottom: .3rem; }
.offer__foot { margin-top: 1.2rem; color: #cfe7ef; }
.offer__foot b { color: #fff; }
.pill { display: inline-flex; align-items: center; gap: .45rem; margin-left: .4rem; padding: .45rem .9rem .35rem; border-radius: 999px; background: #fff; color: var(--navy);
  font-weight: 800; text-decoration: none; white-space: nowrap; transition: transform .3s var(--ease); }
.pill:hover { transform: translateY(-2px); }
.pill svg { width: 1.05em; height: 1.05em; color: var(--green); margin-top: -.15em; }
.offer.is-expired { display: none; }

/* ---------- venue */
.venue { padding-bottom: calc(var(--space) + 3rem); }
.venue__grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(1.4rem, 3vw, 2.4rem); align-items: stretch; }
.venue__photo { position: relative; margin: 0; border-radius: calc(var(--radius) + 6px); overflow: hidden; min-height: 420px; box-shadow: var(--shadow); }
.venue__photo img { position: absolute; inset: -6% 0; width: 100%; height: 112%; object-fit: cover; object-position: center 30%; will-change: transform; }
.venue__photo figcaption { position: absolute; left: 1rem; bottom: 1rem; display: flex; align-items: center; gap: .5rem; padding: .6rem 1rem .5rem; border-radius: 999px;
  background: rgba(255, 255, 255, .9); backdrop-filter: blur(8px); color: var(--navy); font-weight: 700; font-size: var(--fs-small); }
.venue__photo figcaption svg { width: 1.1em; height: 1.1em; color: var(--orange); fill: var(--orange); margin-top: -.15em; }
.venue__side { display: grid; grid-template-rows: auto 1fr; gap: 1rem; }
.distances { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.distances li { display: grid; grid-template-columns: auto 1fr; column-gap: .9rem; align-items: center; padding: 1rem 1.1rem; border-radius: var(--radius); background: #fff; }
.distances svg { grid-row: span 2; width: 38px; height: 38px; padding: 7px; border-radius: 12px; background: #E6F5F7; color: var(--deep); }
.distances b { font-size: 1.5rem; color: var(--navy); line-height: 1.1; }
.distances span { color: var(--muted); font-size: var(--fs-small); line-height: 1.2; }
.map { border-radius: var(--radius); overflow: hidden; min-height: 230px; background: #e7eef1; }
.map iframe { width: 100%; height: 100%; min-height: 230px; border: 0; }

/* ---------- committee */
.leaders { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.leader { position: relative; padding: 1.6rem 1.6rem 1.4rem; border-radius: var(--radius); color: #fff; overflow: hidden;
  background: linear-gradient(140deg, var(--navy), #0B5582); }
.leader::after { content: ""; position: absolute; right: -40px; bottom: -60px; width: 160px; height: 160px; border-radius: 50%; background: radial-gradient(circle, rgba(114, 212, 214, .3), transparent 70%); }
.leader span, .bearers span { display: block; font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--aqua); }
.leader b { display: block; margin-top: .4rem; font-size: var(--fs-h3); line-height: 1.1; }
.bearers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 1rem; }
.bearers div { padding: 1.1rem 1.6rem 1rem; border-radius: var(--radius); background: #EEF8F9; }
.bearers span { color: var(--deep); }
.bearers b { display: block; margin-top: .3rem; font-size: 1.2rem; color: var(--navy); }
.subhead { margin: clamp(2.4rem, 5vw, 3.5rem) 0 1.1rem; font-size: var(--fs-small); letter-spacing: .24em; text-transform: uppercase; color: var(--deep);
  display: flex; align-items: center; gap: 1rem; }
.subhead::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.chips { display: flex; flex-wrap: wrap; gap: .6rem; }
.chips li { padding: .65rem 1.1rem .5rem; border-radius: 999px; border: 1px solid var(--line); font-weight: 600; color: var(--navy); background: #fff; transition: background .3s, color .3s, border-color .3s; }
.chips li:hover { background: var(--navy); color: #fff; border-color: var(--navy); }
.committees { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.cmt { padding: 1.3rem 1.3rem 1.1rem; border-radius: var(--radius); border: 1px solid var(--line); border-top: 4px solid var(--teal); background: #fff; transition: transform .4s var(--ease), box-shadow .4s; }
.cmt:nth-child(4n+2) { border-top-color: var(--green); }
.cmt:nth-child(4n+3) { border-top-color: var(--orange); }
.cmt:nth-child(4n) { border-top-color: var(--sky); }
.cmt:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.cmt h4 { font-size: 1.1rem; color: var(--navy); margin-bottom: .8rem; }
.cmt p { font-weight: 700; color: var(--ink); margin-bottom: .55rem; line-height: 1.2; }
.cmt p span { display: block; font-size: .78rem; font-weight: 600; color: var(--muted); letter-spacing: .04em; }

/* ---------- downloads */
.downloads { padding: 0 0 clamp(8rem, 14vw, 12rem); }
.downloads__in { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.dl { display: flex; align-items: center; gap: 1rem; padding: 1.3rem 1.5rem; border-radius: var(--radius); background: var(--sand); text-decoration: none; color: var(--navy);
  border: 1px solid #f4e3cc; transition: transform .4s var(--ease), box-shadow .4s, background .3s; }
.dl:hover { transform: translateY(-4px); box-shadow: var(--shadow); background: #fff; }
.dl__ico { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 16px; background: var(--orange); color: #fff; flex: none; }
.dl__ico svg { width: 26px; height: 26px; }
.dl b { display: block; font-size: 1.2rem; }
.dl small { color: var(--muted); }
.dl__arrow { margin-left: auto; width: 26px; height: 26px; color: var(--deep); transition: transform .4s var(--ease); }
.dl:hover .dl__arrow { transform: translateY(3px); }

/* ---------- footer */
.footer { position: relative; color: #cfe7ef; background: linear-gradient(180deg, var(--navy), var(--navy-deep)); padding: clamp(9rem, 15vw, 13rem) 0 1.5rem; margin-top: -1px; }
.footer .waves-canvas--top { top: calc(-1 * clamp(120px, 16vw, 230px) + 1px); }
.footer__in { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: clamp(2rem, 5vw, 4rem); }
.footer__brand img { width: min(300px, 100%); height: auto; }
.footer__brand p { margin-top: 1rem; max-width: 36ch; }
.footer__partners { display: flex; gap: .8rem; margin-top: 1.4rem; }
.footer__partners img { height: 44px; width: auto; border-radius: 6px; background: #fff; padding: 3px; }
.footer h4 { color: #fff; font-size: 1rem; letter-spacing: .2em; text-transform: uppercase; margin-bottom: 1.1rem; }
.footer__col { display: flex; flex-direction: column; align-items: flex-start; gap: .75rem; }
.footer__col p, .footer__col a:not(.btn) { display: flex; align-items: center; gap: .6rem; text-decoration: none; word-break: break-word; }
.footer__col a:not(.btn):hover { color: #fff; }
.footer__col svg { width: 1.2em; height: 1.2em; color: var(--aqua); flex: none; margin-top: -.15em; }
.footer__col small { color: #8fb3c4; margin-top: -.4rem; padding-left: 1.8em; }
.footer__col .btn { margin-top: .4rem; }
.footer__base { display: flex; justify-content: space-between; gap: 1rem; margin-top: clamp(2.5rem, 5vw, 4rem); padding-top: 1.3rem; border-top: 1px solid rgba(114, 212, 214, .2);
  font-size: var(--fs-small); color: #8fb3c4; }
.footer__base a { text-decoration: none; }
.footer__base a:hover { color: #fff; }

/* ---------- responsive */
@media (max-width: 1080px) {
  .committees { grid-template-columns: repeat(3, 1fr); }
  .schedule { grid-template-columns: 1fr; }
  .schedule .muted { grid-column: 1; }
}
@media (max-width: 960px) {
  .burger { display: flex; }
  .nav__links { position: fixed; inset: 0 0 auto; top: 0; padding: 6rem var(--gutter) 2rem; flex-direction: column; align-items: stretch; gap: .2rem;
    background: rgba(255, 255, 255, .97); backdrop-filter: blur(14px); box-shadow: 0 20px 40px -20px rgba(6, 61, 97, .4);
    transform: translateY(-105%); transition: transform .5s var(--ease); z-index: -1; }
  .nav__links.is-open { transform: none; }
  .nav__links a:not(.btn) { font-size: 1.3rem; padding: .8rem 0; border-bottom: 1px solid var(--line); }
  .nav__links a:not(.btn)::after { display: none; }
  .nav__cta { margin-top: 1rem; justify-content: center; }
  .hero__in, .about__in, .abstracts__in, .venue__grid { grid-template-columns: 1fr; }
  .hero { padding-top: 6.5rem; }
  .hero__art { order: -1; }
  .hero__logo { width: min(78vw, 380px); }
  .hero__birds { left: auto; right: 6%; top: 11%; }
  .highlights, .workshops { grid-template-columns: 1fr 1fr; }
  .committees { grid-template-columns: 1fr 1fr; }
  .venue__photo { min-height: 300px; }
}
@media (max-width: 640px) {
  .highlights, .workshops, .leaders, .bearers, .periods, .downloads__in, .offer ol, .footer__in { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .countdown__cells { gap: .45rem; }
  .countdown__cells div { min-width: 0; flex: 1; }
  .timeline li { grid-template-columns: 1fr; gap: .6rem; }
  .timeline li::before { top: 14px; margin-top: 0; }
  .subdates { flex-direction: column; align-items: stretch; }
  .subdates__arrow { transform: rotate(90deg); align-self: center; }
  .offer { grid-template-columns: 1fr; justify-items: start; }
  .distances { grid-template-columns: 1fr; }
  .committees { grid-template-columns: 1fr; }
  .guide dl { grid-template-columns: 1fr; gap: .2rem; }
  .guide dd { margin-bottom: .6rem; }
  .footer__base { flex-direction: column; }
  .pill { margin: .6rem 0 0; }
  .swipe { display: block; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}