/* ISTC 2026 registration — "Coast HD" theme: the official Muscat coastline artwork, brought to life. */
:root{
  --abyss:#041638;--deep:#06205a;--tide:#0b3a8c;--reef:#0b5577;
  --signal:#4fe3f7;--volt:#2f7bff;--foam:#eaf7ff;--mist:#9fc0d3;--sand:#e8c48d;
  --line:rgba(122,210,238,.18);--glass:rgba(6,28,84,.58);--field:rgba(3,18,58,.72);--danger:#ff8a9a;
  --display:"Unbounded","Segoe UI",sans-serif;--sans:"IBM Plex Sans","Noto Sans Arabic","Segoe UI",Tahoma,sans-serif;--mono:"IBM Plex Mono",ui-monospace,Consolas,monospace;
  --mx:62%;--my:40%;--ease:cubic-bezier(.2,.8,.2,1);
  color-scheme:dark;font-family:var(--sans);scroll-behavior:smooth;scroll-padding-top:88px
}
:root:lang(ar){--sans:"Noto Sans Arabic","IBM Plex Sans",Tahoma,sans-serif}
*{box-sizing:border-box}
body{margin:0;background:var(--abyss);color:var(--foam);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
[hidden]{display:none!important}
a{color:inherit;text-decoration:none}
img{max-width:100%}
button,input,select,textarea{font:inherit}
button,a,input,select,textarea,summary{touch-action:manipulation}
button,a.button{cursor:pointer}
button:disabled{cursor:wait;opacity:.55}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:fixed;top:-100px;inset-inline-start:16px;background:var(--signal);color:var(--abyss);padding:12px 16px;border-radius:8px;z-index:50;font-weight:600}
.skip:focus{top:12px}

/* Cursor halo: a soft sonar light following fine pointers. */
.cursor-halo{position:fixed;left:0;top:0;width:440px;height:440px;margin:-220px 0 0 -220px;border-radius:50%;pointer-events:none;z-index:1;
  background:radial-gradient(circle,rgba(92,240,238,.13),rgba(46,139,255,.05) 40%,transparent 68%);opacity:0;transition:opacity .4s;mix-blend-mode:screen;will-change:transform}
.has-pointer .cursor-halo{opacity:1}

/* Navigation */
.navigation{position:fixed;inset:0 0 auto;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px clamp(16px,4vw,48px);transition:background .35s,backdrop-filter .35s,border-color .35s;border-bottom:1px solid transparent}
.navigation.solid{background:rgba(1,12,24,.72);backdrop-filter:blur(14px) saturate(1.3);-webkit-backdrop-filter:blur(14px) saturate(1.3);border-color:var(--line)}
.brand{display:flex;align-items:center;gap:16px;min-height:44px}
.brand img{width:96px;height:auto;filter:brightness(0) invert(1)}
.brand-divider{width:1px;height:28px;background:var(--line)}
.brand-event{font-family:var(--display);font-weight:700;font-size:15px;letter-spacing:.08em}
.brand-event b{color:var(--signal);font-weight:500}
nav{display:flex;align-items:center;gap:8px}
.chip{white-space:nowrap;min-height:40px;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:rgba(2,26,46,.5);color:var(--mist);font-size:13px;transition:color .2s,border-color .2s,background .2s}
.chip:hover{color:var(--foam);border-color:rgba(92,240,238,.5)}
.nav-cta{display:inline-flex;align-items:center;min-height:42px;padding:9px 20px;border-radius:999px;background:var(--signal);color:var(--abyss);font-weight:600;font-size:14px;box-shadow:0 0 0 0 rgba(92,240,238,.5);transition:box-shadow .3s,transform .25s var(--ease)}
.nav-cta:hover{box-shadow:0 0 28px 2px rgba(92,240,238,.45)}

/* Hero */
.hero{position:relative;isolation:isolate;min-height:100svh;padding:112px clamp(16px,4vw,48px) 72px;overflow:hidden;
  background:radial-gradient(120% 70% at 70% -10%,#0b4a73 0%,rgba(6,49,77,.55) 35%,transparent 70%),linear-gradient(180deg,#03213a 0%,var(--deep) 45%,var(--abyss) 100%)}
@keyframes rays{to{transform:translateX(-5%) skewX(4deg)}}
.hero-grid{position:relative;max-width:1360px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);gap:clamp(32px,5vw,80px);align-items:center;min-height:calc(100svh - 184px)}
.kicker{display:flex;align-items:center;gap:10px;margin:0 0 20px;font-family:var(--mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--signal)}
:lang(ar) .kicker{letter-spacing:0;font-family:var(--sans)}
.pulse{width:8px;height:8px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 0 rgba(92,240,238,.7);animation:ping 2.4s infinite}
@keyframes ping{70%{box-shadow:0 0 0 12px rgba(92,240,238,0)}100%{box-shadow:0 0 0 0 rgba(92,240,238,0)}}
h1{margin:0;font-weight:400}
.wordmark{display:flex;font-family:var(--display);font-weight:800;font-size:clamp(88px,13.5vw,210px);line-height:.86;letter-spacing:-.02em;direction:ltr;
  background:radial-gradient(38% 60% at var(--wx,50%) 30%,#ffffff 0%,rgba(255,255,255,0) 60%),linear-gradient(180deg,#f3fdff 0%,#9ef3ff 34%,#2fb8e6 55%,#0d62a8 80%,#0a3d74 100%);
  background-size:100% 100%,100% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;filter:drop-shadow(0 18px 48px rgba(46,139,255,.35))}
.wordmark span{display:inline-block;background:inherit;-webkit-background-clip:text;background-clip:text;animation:surface 1.3s var(--ease) both}
.wordmark span:nth-child(2){animation-delay:.08s}.wordmark span:nth-child(3){animation-delay:.16s}.wordmark span:nth-child(4){animation-delay:.24s}
@keyframes surface{from{clip-path:inset(100% 0 0 0);transform:translateY(40px)}to{clip-path:inset(0 0 0 0);transform:none}}
.title-sub{display:block;margin-top:22px;max-width:560px;font-size:clamp(13px,1.25vw,17px);font-weight:300;letter-spacing:.32em;text-transform:uppercase;color:var(--mist);line-height:1.8}
:lang(ar) .title-sub{letter-spacing:0;font-size:clamp(17px,1.6vw,21px);font-weight:400}
.tagline{margin:26px 0 30px;font-family:var(--display);font-weight:500;font-size:clamp(24px,2.6vw,38px);letter-spacing:-.01em;line-height:1.2}
:lang(ar) .tagline{font-family:var(--sans);font-weight:600}
.tagline em{font-style:normal;color:var(--signal);text-shadow:0 0 30px rgba(92,240,238,.45)}
.facts{list-style:none;margin:0 0 34px;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.facts li{display:flex;align-items:center;gap:9px;padding:9px 14px;border:1px solid var(--line);border-radius:999px;background:rgba(2,26,46,.45);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);font-size:14px;color:var(--foam)}
.facts svg,.secure svg{width:17px;height:17px;fill:none;stroke:var(--signal);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex:none}
.depth{display:inline-flex;align-items:center;gap:18px;padding:14px 20px;border-radius:14px;border:1px solid var(--line);background:linear-gradient(135deg,rgba(6,49,77,.55),rgba(2,26,46,.25))}
.depth[hidden]{display:none}
.depth-label{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--mist);max-width:120px;line-height:1.4}
:lang(ar) .depth-label{font-family:var(--sans);letter-spacing:0;font-size:13px}
.depth-units{display:flex;gap:16px}
.depth-units span{display:flex;flex-direction:column;align-items:center;min-width:44px}
.depth-units b{font-family:var(--mono);font-weight:500;font-size:26px;color:var(--foam);font-variant-numeric:tabular-nums;line-height:1.1}
.depth-units small{font-size:11px;color:var(--mist)}

/* Form column with the protective shield behind it. */
.hero-form{position:relative;justify-self:end;width:100%;max-width:480px}
@keyframes breathe{50%{opacity:.72;filter:drop-shadow(0 0 90px rgba(92,240,238,.5))}}
.registration{position:relative;z-index:1;padding:30px 30px 22px;border-radius:22px;background:var(--glass);border:1px solid rgba(122,210,238,.28);
  backdrop-filter:blur(22px) saturate(1.4);-webkit-backdrop-filter:blur(22px) saturate(1.4);box-shadow:0 40px 90px -30px rgba(0,8,18,.9),inset 0 1px 0 rgba(255,255,255,.08);outline:none}
.registration::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;pointer-events:none;
  background:conic-gradient(from var(--spin,0deg),transparent 0 70%,rgba(92,240,238,.9) 80%,transparent 90%);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;animation:orbit 7s linear infinite}
@property --spin{syntax:"<angle>";inherits:false;initial-value:0deg}
@keyframes orbit{to{--spin:360deg}}
.reg-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.reg-eyebrow{margin:0;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--signal)}
:lang(ar) .reg-eyebrow{font-family:var(--sans);letter-spacing:0;font-size:13px}
.secure{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--mist)}
.secure svg{width:14px;height:14px}
.steps{display:flex;gap:8px;list-style:none;padding:0;margin:20px 0 0}
.steps li{flex:1;display:flex;flex-direction:column;gap:8px;font-size:12px;color:var(--mist)}
.steps i{display:block;height:3px;border-radius:3px;background:rgba(122,210,238,.18);overflow:hidden;position:relative}
.steps i::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--volt),var(--signal));transform:scaleX(0);transform-origin:left;transition:transform .6s var(--ease)}
[dir=rtl] .steps i::after{transform-origin:right}
.steps li.done i::after,.steps li[aria-current=step] i::after{transform:scaleX(1)}
.steps li[aria-current=step]{color:var(--foam);font-weight:600}
.registration h2{font-family:var(--display);font-weight:700;font-size:clamp(24px,2.2vw,30px);letter-spacing:-.01em;line-height:1.15;margin:22px 0 8px}
:lang(ar) .registration h2{font-family:var(--sans)}
.registration p{color:var(--mist);font-size:14px;line-height:1.65;margin:0 0 6px}
label{display:block;font-size:13px;font-weight:500;color:var(--foam);margin:18px 0 8px}
.field-shell{position:relative;border-radius:12px}
.field-shell::after{content:"";position:absolute;inset:auto 12px 0;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--volt),var(--signal));transform:scaleX(0);transition:transform .45s var(--ease)}
.field-shell:focus-within::after{transform:scaleX(1)}
input,select,textarea{display:block;width:100%;min-height:52px;border:1px solid rgba(122,210,238,.26);background:var(--field);color:var(--foam);border-radius:12px;padding:13px 15px;font-size:16px;transition:border-color .2s,box-shadow .25s,background .2s}
input::placeholder{color:rgba(159,192,211,.5)}
select{appearance:none;-webkit-appearance:none;padding-inline-end:40px;background-image:linear-gradient(45deg,transparent 50%,var(--signal) 50%),linear-gradient(135deg,var(--signal) 50%,transparent 50%);background-position:calc(100% - 20px) 50%,calc(100% - 15px) 50%;background-size:5px 5px;background-repeat:no-repeat}
[dir=rtl] select{background-position:20px 50%,15px 50%}
select option{background:#04213a;color:var(--foam)}
textarea{min-height:96px;resize:vertical}
input:hover,select:hover,textarea:hover{border-color:rgba(122,210,238,.5)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--signal);background:rgba(2,24,42,.9);box-shadow:0 0 0 4px rgba(92,240,238,.12)}
input:user-invalid{border-color:var(--danger)}
input[type=checkbox]{width:22px;min-height:22px;height:22px;display:inline-block;accent-color:var(--signal);vertical-align:middle;margin-inline-end:10px;padding:0}
.code-input{font-family:var(--mono);font-size:26px;letter-spacing:.55em;text-align:center}
.required{color:var(--danger)}
button,.button{display:flex;align-items:center;justify-content:center;width:100%;min-height:52px;padding:13px 18px;border-radius:12px;border:1px solid transparent;font-weight:600;font-size:15px;margin-top:18px;text-align:center;transition:transform .2s var(--ease),box-shadow .3s,background .2s,border-color .2s}
.primary{position:relative;overflow:hidden;background:linear-gradient(100deg,var(--volt),#27b6e8 55%,var(--signal));color:#01121f;box-shadow:0 12px 34px -12px rgba(46,139,255,.8)}
.primary::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);transform:translateX(-120%);transition:transform .8s var(--ease)}
.primary:hover:not(:disabled)::after{transform:translateX(120%)}
.primary:hover:not(:disabled){box-shadow:0 16px 44px -10px rgba(92,240,238,.75);transform:translateY(-1px)}
.primary:active:not(:disabled){transform:translateY(1px) scale(.99)}
.ghost{background:transparent;color:var(--foam);border-color:rgba(122,210,238,.3);font-weight:500;font-size:14px}
.ghost:hover:not(:disabled){border-color:var(--signal);background:rgba(92,240,238,.06)}
.secondary{display:flex;gap:10px}.secondary button{margin-top:10px}
.small{font-size:12px!important;margin-top:14px!important}
#message:empty{display:none}
#message{margin:14px 0 4px;padding:12px 14px;border-radius:10px;background:rgba(92,240,238,.09);border:1px solid rgba(92,240,238,.3);color:var(--foam)}
#message.error{background:rgba(255,138,154,.1);border-color:rgba(255,138,154,.45);color:#ffd5db}
#fields,#contact-fields{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}
#fields>div,#contact-fields>div{grid-column:1/-1;min-width:0}
#fields>div[data-field=first_name],#fields>div[data-field=last_name],#contact-fields>div[data-field=first_name],#contact-fields>div[data-field=last_name]{grid-column:auto}
#fields>p{grid-column:1/-1}
#verified-email{margin:16px 0 0!important;padding:10px 14px;border-radius:10px;background:rgba(92,240,238,.08);color:var(--signal)!important;overflow-wrap:anywhere;font-family:var(--mono);font-size:13px!important}
[dir=rtl] #verified-email{text-align:right}
.field-help{font-size:12px!important;margin:6px 0 0!important}
.phone-number{display:flex;align-items:stretch;gap:0;border:1px solid rgba(122,210,238,.26);border-radius:12px;background:var(--field)}
.phone-number:focus-within{border-color:var(--signal);box-shadow:0 0 0 4px rgba(92,240,238,.12)}
#phone-prefix{display:flex;align-items:center;padding:0 14px;color:var(--signal);font-size:16px;font-weight:600;border-right:1px solid var(--line);min-width:72px;justify-content:center}
.phone-number input{flex:1;min-width:0;border:0;background:transparent;box-shadow:none!important;border-radius:0 12px 12px 0}
#result-title{font-family:var(--display);font-size:24px;margin:22px 0 6px}
:lang(ar) #result-title{font-family:var(--sans)}
#badge{display:block;width:100%;height:auto;margin-top:16px;border-radius:14px;box-shadow:0 20px 50px -20px rgba(92,240,238,.6);animation:rise .8s var(--ease)}
@keyframes rise{from{opacity:0;transform:translateY(24px) scale(.97)}}
.powered{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:22px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--mist);transition:color .2s}
.powered img{width:20px;height:auto}
.powered b{color:var(--sand);font-weight:600;letter-spacing:.04em}
.powered:hover{color:var(--foam)}
.scroll-cue{position:absolute;left:50%;bottom:22px;width:26px;height:42px;margin-left:-13px;border:1px solid var(--line);border-radius:14px}
.scroll-cue span{position:absolute;left:50%;top:8px;width:3px;height:8px;margin-left:-1.5px;border-radius:2px;background:var(--signal);animation:dive 2s ease-in-out infinite}
@keyframes dive{60%{transform:translateY(14px);opacity:0}}

/* Partners */
.partners{position:relative;padding:44px clamp(16px,4vw,48px);border-block:1px solid var(--line);background:linear-gradient(180deg,rgba(2,26,46,.6),rgba(1,12,24,.2))}
.partner-rail{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:1fr 1.5fr 1fr;align-items:stretch}
.partner{margin:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:14px 24px;position:relative}
.partner+.partner::before{content:"";position:absolute;inset-inline-start:0;top:12%;bottom:12%;width:1px;background:linear-gradient(transparent,var(--line),transparent)}
.partner figcaption{font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--mist)}
:lang(ar) .partner figcaption{font-family:var(--sans);letter-spacing:0;font-size:13px}
.partner img{height:64px;width:auto;object-fit:contain;transition:transform .4s var(--ease),filter .4s}
.partner-wide img{height:66px}
.partner img.logo-insight{height:70px;filter:brightness(0) invert(1)}
.partner:hover img{transform:translateY(-3px);filter:drop-shadow(0 8px 24px rgba(92,240,238,.35))}
.partner:hover img.logo-insight{filter:brightness(0) invert(1) drop-shadow(0 8px 24px rgba(92,240,238,.35))}

/* Dive / journey */
.dive{max-width:1240px;margin:0 auto;padding:clamp(72px,10vw,130px) clamp(16px,4vw,48px);display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,7vw,110px);align-items:start}
.dive h2{font-family:var(--display);font-weight:700;font-size:clamp(26px,2.5vw,36px);line-height:1.12;letter-spacing:-.02em;margin:0 0 20px;text-wrap:balance}
:lang(ar) .dive h2{font-family:var(--sans);letter-spacing:0}
.meta{display:flex;flex-direction:column;gap:2px;margin:0 0 22px;font-family:var(--mono);font-size:13px;color:var(--signal)}
:lang(ar) .meta{font-family:var(--sans);font-size:15px}
.lede{color:var(--mist);font-size:17px;line-height:1.75;max-width:52ch;margin:0}
.journey{list-style:none;margin:0;padding:0 0 0;position:relative}
.journey::before{content:"";position:absolute;inset-inline-start:34px;top:10px;bottom:10px;width:1px;background:linear-gradient(var(--signal),var(--volt) 50%,transparent)}
.journey li{position:relative;display:flex;gap:26px;padding:0 0 42px}
.depth-mark{flex:none;width:70px;display:flex;justify-content:center;padding:6px 0;font-family:var(--mono);font-size:12px;color:var(--signal);background:var(--abyss);position:relative;z-index:1;height:max-content;border:1px solid var(--line);border-radius:999px}
.journey h3{font-family:var(--display);font-weight:500;font-size:20px;margin:2px 0 8px}
:lang(ar) .journey h3{font-family:var(--sans);font-weight:600}
.journey p{margin:0;color:var(--mist);font-size:15px;line-height:1.7}

/* Official banner with 3D tilt */
.poster-wrap{max-width:1240px;margin:0 auto;padding:0 clamp(16px,4vw,48px) clamp(72px,9vw,120px)}
.poster{position:relative;display:block;border-radius:20px;overflow:hidden;border:1px solid rgba(122,210,238,.3);transform:perspective(1200px) rotateX(var(--tx,0deg)) rotateY(var(--ty,0deg));transition:transform .5s var(--ease),box-shadow .5s;box-shadow:0 40px 80px -40px rgba(46,139,255,.6)}
.poster img{display:block;width:100%;height:auto}
.glare{position:absolute;inset:0;pointer-events:none;background:radial-gradient(circle at var(--gx,50%) var(--gy,50%),rgba(255,255,255,.22),transparent 45%);opacity:0;transition:opacity .4s;mix-blend-mode:overlay}
.poster:hover .glare{opacity:1}
.poster-side{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:28px;align-items:start}
.poster-side .contact{grid-column:2}
details{border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:rgba(2,26,46,.4)}
summary{cursor:pointer;min-height:32px;font-weight:500}
#programme p{color:var(--mist);font-size:14px}
#programme label{display:flex;align-items:center;font-weight:500}
.contact{display:flex;justify-content:space-between;align-items:center;min-height:56px;padding:14px 18px;border:1px solid var(--line);border-radius:14px;color:var(--signal);transition:background .2s,border-color .2s}
.contact:hover{background:rgba(92,240,238,.06);border-color:var(--signal)}

/* Footer */
footer{max-width:1240px;margin:0 auto;padding:28px clamp(16px,4vw,48px) calc(28px + env(safe-area-inset-bottom));border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:13px;color:var(--mist)}
.foot-event{display:flex;align-items:center;gap:14px;font-family:var(--mono);letter-spacing:.14em;color:var(--signal)}
.foot-event img{width:52px;height:52px;object-fit:contain;filter:brightness(0) invert(1);opacity:.85}
.foot-fonix{display:inline-flex;align-items:center;gap:9px;padding:8px 14px;border:1px solid rgba(232,196,141,.25);border-radius:999px;transition:border-color .2s,box-shadow .3s}
.foot-fonix img{width:22px;height:auto}
.foot-fonix b{color:var(--sand);letter-spacing:.05em}
.foot-fonix:hover{border-color:var(--sand);box-shadow:0 0 24px -4px rgba(232,196,141,.4)}

/* Reveal on scroll */
.js .reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.js .reveal.in{opacity:1;transform:none}
.partner-rail .reveal:nth-child(2){transition-delay:.1s}.partner-rail .reveal:nth-child(3){transition-delay:.2s}
.journey .reveal:nth-child(2){transition-delay:.1s}.journey .reveal:nth-child(3){transition-delay:.2s}

.mobile-cta{display:none}
[dir=rtl] h1,[dir=rtl] h2,[dir=rtl] .tagline{letter-spacing:0}

.motion-paused .caustics,.motion-paused .shield,.motion-paused .registration::before,.motion-paused .pulse,.motion-paused .scroll-cue span{animation-play-state:paused}
.motion-paused .cursor-halo{display:none}

@media(max-width:1199px){
  .hero-grid{grid-template-columns:1fr;min-height:0;gap:44px}
  .hero-form{justify-self:center}
    .hero{min-height:0;padding-bottom:88px}
  .scroll-cue{display:none}
}
@media(max-width:760px){
  :root{scroll-padding-top:72px}
  .navigation{padding:10px 16px}
  .brand img{width:78px}.brand-divider,.brand-event{display:none}
  .chip{padding:7px 11px;font-size:12px;min-height:40px}
  #motion{display:none}
  .nav-cta{padding:8px 16px;min-height:40px}
  .hero{padding:88px 16px 56px}
  .kicker{font-size:11px;margin-bottom:14px}
  .wordmark{font-size:clamp(84px,27vw,132px)}
  .title-sub{font-size:12px;letter-spacing:.24em;margin-top:14px}
  .tagline{margin:18px 0 20px}
  .facts{margin-bottom:22px;gap:8px}.facts li{font-size:13px;padding:8px 12px}
  .depth{display:flex;flex-direction:column;align-items:flex-start;gap:10px;width:100%}
  .depth-label{max-width:none}
  .depth-units{width:100%;justify-content:space-between}
  .registration{padding:24px 18px 18px;border-radius:18px}
    .partners{padding:32px 16px}
  .partner-rail{grid-template-columns:1fr 1fr;row-gap:12px}
  .partner-wide{grid-column:1/-1;order:-1;padding-bottom:22px;border-bottom:1px solid var(--line)}
  .partner+.partner::before{display:none}
  .partner:last-child::before{display:block}
  .partner figcaption{white-space:nowrap;font-size:10px;letter-spacing:.12em}
  .partner img{height:48px}.partner-wide img{height:52px}.partner img.logo-insight{height:52px}
  .dive{grid-template-columns:1fr;padding-top:64px}
  .journey::before{inset-inline-start:30px}
  .journey li{gap:18px}
  .depth-mark{width:62px}
  .poster{border-radius:14px}
  .poster-side{grid-template-columns:1fr}.poster-side .contact{grid-column:auto}
  footer{flex-direction:column;align-items:flex-start;padding-bottom:calc(92px + env(safe-area-inset-bottom))}
  .mobile-cta{display:flex;position:fixed;z-index:30;left:16px;right:16px;bottom:calc(14px + env(safe-area-inset-bottom));min-height:54px;align-items:center;justify-content:center;border-radius:14px;font-weight:600;color:#01121f;
    background:linear-gradient(100deg,var(--volt),#27b6e8 55%,var(--signal));box-shadow:0 18px 40px -12px rgba(0,0,0,.8),0 0 30px -6px rgba(92,240,238,.6);transform:translateY(140%);transition:transform .45s var(--ease)}
  .mobile-cta.show{transform:none}
}
@media(max-width:380px){#fields,#contact-fields{grid-template-columns:1fr}.depth-units b{font-size:22px}.secondary{flex-direction:column;gap:0}}
@media(prefers-reduced-motion:reduce){
  :root{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;transform:none}
  .cursor-halo{display:none}
}

/* Colour Insight + ISTC logos on white tiles (dark theme keeps its palette). */
.brand{gap:12px;padding:6px 14px;border-radius:14px;background:#fff;box-shadow:0 10px 30px -14px rgba(0,8,18,.8)}
.brand img,.brand #organizer-logo{filter:none;width:92px}
.brand .brand-istc{width:40px;height:40px;object-fit:contain}
.brand-divider{display:block;height:30px;background:rgba(10,47,134,.18)}
.partner img.logo-insight,.partner:hover img.logo-insight{filter:none;height:64px;padding:10px 16px;border-radius:14px;background:#fff;box-sizing:content-box}
.partner:hover img.logo-insight{transform:translateY(-3px);box-shadow:0 8px 24px rgba(92,240,238,.35)}
.foot-event img{filter:none;opacity:1;width:64px;height:64px;padding:6px;border-radius:14px;background:#fff}
@media(max-width:760px){
  .brand{padding:5px 10px;gap:8px}.brand img,.brand #organizer-logo{width:70px}
  .brand .brand-istc{width:32px;height:32px}.brand-divider{display:block;height:24px}
  .partner img.logo-insight,.partner:hover img.logo-insight{height:44px;padding:8px 12px}
}

/* ---- Coast scene: official artwork + live network overlay ---- */
.hero{background:linear-gradient(180deg,#0a2a6e,#06205a 70%,var(--abyss))}
.scene{position:absolute;inset:0;z-index:-2;overflow:hidden;transform:translate3d(var(--sx,0),var(--sy,0),0) scale(1.04);transition:transform 1.4s var(--ease)}
.scene-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:var(--pos,70%) 50%;animation:breath 26s ease-in-out infinite alternate}
.net{position:absolute;inset:0;width:100%;height:100%;display:block;animation:breath 26s ease-in-out infinite alternate}
@keyframes breath{to{transform:scale(1.035)}}
.scene-shade{position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(90deg,rgba(6,24,78,.88) 0%,rgba(6,24,78,.62) 30%,rgba(6,24,78,.08) 52%,transparent 64%),linear-gradient(0deg,var(--abyss) 0%,rgba(4,22,56,.2) 18%,transparent 34%),linear-gradient(180deg,rgba(6,24,78,.55),transparent 22%)}


.tagline em{color:var(--signal)}
.registration{border-color:rgba(122,210,255,.34)}
.cursor-halo{background:radial-gradient(circle,rgba(79,227,247,.16),rgba(47,123,255,.06) 40%,transparent 68%)}
@media(max-width:1199px){
  .scene{inset:0 0 auto;height:min(620px,78svh)}
  .scene-shade{inset:0 0 auto;height:min(620px,78svh);background:linear-gradient(0deg,#06205a 0%,rgba(6,32,90,.55) 30%,rgba(6,24,78,.25) 60%,rgba(6,24,78,.6) 100%)}
}
@media(prefers-reduced-motion:reduce){.scene{transform:none}}

/* ---- Coast HD: underwater-lit wordmark, white Insight mark ---- */
.wordmark{background:linear-gradient(180deg,rgba(255,255,255,.45),rgba(255,255,255,0) 26%),url(/events/istc-water.webp) 0% 0%/230% 100%;
  -webkit-background-clip:text;background-clip:text;color:transparent;animation:water 26s ease-in-out infinite alternate;
  filter:drop-shadow(0 0 1.5px rgba(255,255,255,.75)) drop-shadow(0 0 22px rgba(79,227,247,.35)) drop-shadow(0 16px 40px rgba(1,8,34,.75))}
.wordmark span{background:inherit;-webkit-background-clip:text;background-clip:text;-webkit-text-stroke:1.6px rgba(236,252,255,.92)}
.wordmark span:nth-child(2){animation-delay:.08s}.wordmark span:nth-child(3){animation-delay:.16s}.wordmark span:nth-child(4){animation-delay:.24s}
@keyframes water{to{background-position:0 0,100% 0}}
.brand,.brand:hover{background:none;box-shadow:none;padding:0;gap:16px}
.brand .brand-insight{width:108px;height:auto;display:block;filter:drop-shadow(0 2px 10px rgba(0,8,30,.5))}
.brand .brand-istc{width:44px;height:44px;padding:4px;border-radius:12px;background:#fff;box-sizing:content-box;object-fit:contain}
.brand-divider{background:rgba(255,255,255,.35)}
.partner img.logo-insight-white{height:72px}
.scene-img{image-rendering:auto}
@media(max-width:760px){.brand .brand-insight{width:84px}.brand .brand-istc{width:34px;height:34px;padding:3px}.partner img.logo-insight-white{height:52px}}
.title-sub{color:#e8f5ff;text-shadow:0 2px 14px rgba(1,10,40,.9)}
.kicker,.tagline{text-shadow:0 2px 14px rgba(1,10,40,.8)}
@media(max-width:1199px){.scene-shade{background:linear-gradient(0deg,#06205a 0%,rgba(6,32,90,.6) 30%,rgba(6,24,78,.45) 60%,rgba(6,24,78,.7) 100%)}}

/* Keep the coast shield visible beside the desktop form; mobile stays stacked. */
@media(min-width:1200px){
  .hero{padding-inline-end:20px}
  .hero-grid{max-width:1520px}
  .hero-form{max-width:380px}
}

/* Keep inputs readable; reposition the artwork instead of shrinking the form. */
.hero-form{max-width:560px}
.registration{padding:32px}
#result-title{scroll-margin-top:112px}
.registration label{font-size:15px}
.registration input,.registration select,.registration textarea{min-height:56px;font-size:16px}
.registration p{font-size:15px}
.brand .brand-istc{width:110px;height:76px;padding:0;border-radius:0;background:transparent;box-shadow:none;object-fit:cover;object-position:50% 53%}
.foot-event #event-logo{width:130px;height:90px;object-fit:cover;object-position:50% 53%;background:transparent}
@media(min-width:1200px){
  .hero-grid{grid-template-columns:minmax(0,1fr) minmax(480px,560px);gap:48px}
  .hero-form{max-width:560px}
  .scene-img{object-position:95% 50%}
}
@media(max-width:1199px){.hero-form{max-width:600px}}
@media(max-width:600px){
  .registration{padding:24px 20px}
  #fields,#contact-fields{grid-template-columns:1fr}
  .brand .brand-istc{width:88px;height:62px;padding:0}
}

.admission-notice{font-size:13px!important;font-weight:400;line-height:1.65;color:var(--mist);margin:18px 0 14px;max-width:70ch}
#edit-contact{margin:0 0 18px}

/* Bilingual registration: language choice travels with the form, not the header. */
.navigation{position:absolute}
.language-switch{display:flex;justify-content:flex-end;gap:4px;width:max-content;max-width:100%;margin:0 0 16px auto;padding:4px;border:1px solid rgba(159,192,211,.4);border-radius:14px;background:#082350;position:relative;z-index:2}
.language-switch button{margin:0;width:auto;transition:none;display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:44px;padding:8px 14px;border:1px solid transparent;border-radius:10px;background:transparent;color:var(--foam);font-size:15px;font-weight:500;line-height:1.5}
.language-switch button[aria-pressed=true]{background:#d9f7fd;color:#082350;border-color:#a6e8f5;font-weight:600}
.language-switch button:hover:not([aria-pressed=true]){background:#16376a}
.language-switch img{width:24px;height:16px;object-fit:cover;border-radius:2px;flex:none}
.language-switch [lang=ar]{font-family:"Noto Sans Arabic",Tahoma,sans-serif;font-size:16px}
:root:lang(ar){--sans:"Noto Sans Arabic","IBM Plex Sans",Tahoma,sans-serif}
html[lang=ar] body{line-height:1.85}
html[lang=ar] .hero-copy,html[lang=ar] .registration{text-align:start}
html[lang=ar] .language-switch{margin-inline:0 auto}
html[lang=ar] .kicker{font-size:15px;line-height:1.8}
html[lang=ar] .title-sub{font-size:clamp(20px,1.65vw,25px);font-weight:500;line-height:1.8;margin-top:28px}
html[lang=ar] .tagline{font-size:clamp(28px,2.7vw,42px);line-height:1.65;margin:22px 0 28px;text-wrap:balance}
html[lang=ar] .facts li{font-size:15px;line-height:1.8;border-radius:16px;align-items:flex-start}
html[lang=ar] .facts svg{margin-top:5px}
html[lang=ar] .facts span{unicode-bidi:isolate}
html[lang=ar] .depth-label{font-size:15px;line-height:1.7}
html[lang=ar] .depth-units{direction:rtl}
html[lang=ar] .depth-units b{direction:ltr;unicode-bidi:isolate}
html[lang=ar] .depth-units small{font-family:var(--sans);font-size:13px;line-height:1.8;margin-top:5px}
html[lang=ar] .registration h2{font-family:var(--sans);font-size:32px;font-weight:600;line-height:1.5;margin:24px 0 12px}
html[lang=ar] .registration p{font-size:16px;line-height:1.9}
html[lang=ar] .registration .reg-eyebrow{font-size:16px;font-weight:500}
html[lang=ar] .secure,html[lang=ar] .steps li{font-size:14px;line-height:1.7}
html[lang=ar] .registration label{font-size:16px;line-height:1.75;font-weight:500;margin-bottom:9px}
html[lang=ar] .registration input,html[lang=ar] .registration select,html[lang=ar] .registration textarea{font-size:17px;line-height:1.7;min-height:58px}
html[lang=ar] .registration input:not([dir=ltr]),html[lang=ar] .registration textarea{text-align:right}
html[lang=ar] .registration [dir=ltr]{unicode-bidi:isolate;text-align:left}
html[lang=ar] .registration .field-help{font-size:14px;line-height:1.85;text-align:right;margin-top:8px}
html[lang=ar] .registration button,html[lang=ar] .registration .button{font-size:17px;font-weight:500;line-height:1.7;min-height:52px}
html[lang=ar] .registration .admission-notice{font-size:15px!important;line-height:1.95}
html[lang=ar] .powered,html[lang=ar] .foot-fonix{font-size:14px;line-height:1.8;flex-wrap:wrap}
html[lang=ar] .powered b,html[lang=ar] .foot-fonix b{direction:ltr;unicode-bidi:isolate}
html[lang=ar] .dive h2,html[lang=ar] .journey h3{font-family:var(--sans);line-height:1.65}
html[lang=ar] .journey p,html[lang=ar] .lede{line-height:1.9}
@media(max-width:600px){
  .language-switch{margin-bottom:14px}
  .language-switch button{padding:8px 12px}
  html[lang=ar] .registration{padding:24px 20px}
  html[lang=ar] .registration h2{font-size:28px}
  html[lang=ar] .depth{flex-wrap:wrap;gap:12px;max-width:100%}
  html[lang=ar] .depth-units{gap:12px}
  html[lang=ar] .facts li{border-radius:14px}
}

/* Keep official partner artwork in banner order, including Arabic pages. */
.partner-rail{direction:ltr;grid-template-columns:minmax(0,2.55fr) minmax(0,.65fr)}
.strategic-logos{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1.1fr);align-items:center;gap:32px;width:100%}
.strategic-logos>div{min-width:0;display:flex;justify-content:center}
.partner{min-width:0;padding-inline:18px}
.partner img{max-width:100%}
.partner .logo-cert-hadatha{width:450px;height:145px;object-fit:cover;filter:brightness(0) invert(1)}
.partner:hover .logo-cert-hadatha{filter:brightness(0) invert(1) drop-shadow(0 8px 24px rgba(92,240,238,.35))}
.partner-ministry img{width:100%;height:auto;max-height:none;filter:brightness(0) invert(1)}
.partner-ministry:hover img{filter:brightness(0) invert(1) drop-shadow(0 8px 24px rgba(92,240,238,.35))}
@media(max-width:760px){
 .partner-rail{grid-template-columns:1fr;gap:20px}
 .strategic-logos{grid-template-columns:1fr;gap:20px}
 .partner{padding:8px 12px}
 .partner+.partner::before,.partner:last-child::before{display:none}
 .partner .logo-cert-hadatha{width:min(100%,380px);height:122px}
 .partner-ministry img{width:min(100%,360px);max-height:none}
 .partner-organizer{border-top:1px solid var(--line);padding-top:24px}
}