/*
 * HELIX - the dark, cinematic design for a clinic's website.
 *
 * One real 3D object (the WebGL helix, helix.js) fixed behind everything, giant
 * type, glowing cards that follow the cursor. Colours: the clinic's own
 * --clinic-* ramp, laid over a near-black tinted with its darkest step.
 */
:root {
  --bg: color-mix(in srgb, var(--clinic-950) 42%, #03070a);
  --bg-2: color-mix(in srgb, var(--clinic-950) 70%, #050a0d);
  --txt: #e9f2f0;
  --txt-soft: rgba(233, 242, 240, .68);
  --line: rgba(255, 255, 255, .11);
  --glow: var(--clinic-400);
  --ease: cubic-bezier(.2, .8, .2, 1);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); -webkit-text-size-adjust: 100%; }
body.helix {
  margin: 0; background: var(--bg); color: var(--txt); overflow-x: hidden;
  font-family: Inter, system-ui, sans-serif; font-size: 16.5px; line-height: 1.65; -webkit-font-smoothing: antialiased;
}
[dir="rtl"] body.helix { font-family: 'Noto Kufi Arabic', Inter, sans-serif; line-height: 1.95; }
h1, h2, h3 { margin: 0; font-family: 'Space Grotesk', Inter, sans-serif; letter-spacing: -.035em; text-wrap: balance; }
[dir="rtl"] h1, [dir="rtl"] h2, [dir="rtl"] h3 { font-family: 'Noto Kufi Arabic', sans-serif; letter-spacing: 0; line-height: 1.5; }
a { color: inherit; }
.ltr { direction: ltr; unicode-bidi: embed; }
.wrap { max-width: 1180px; margin-inline: auto; padding-inline: 22px; }
:focus-visible { outline: 3px solid var(--clinic-300); outline-offset: 3px; border-radius: 10px; }

/* ------------------------------------------------------- the fixed 3D layer */
#gl { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; }
.halo { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; opacity: 0; transition: opacity 1s; }
.halo i { position: absolute; border-radius: 50%; border: 1px solid color-mix(in srgb, var(--clinic-400) 40%, transparent);
  inset-inline-end: 8%; inset-block-start: 50%; width: 46vmin; height: 46vmin; translate: 0 -50%;
  box-shadow: 0 0 80px color-mix(in srgb, var(--clinic-500) 35%, transparent), inset 0 0 60px color-mix(in srgb, var(--clinic-500) 25%, transparent);
  animation: halo 9s ease-in-out infinite; }
.halo i:nth-child(2) { width: 30vmin; height: 30vmin; inset-inline-end: calc(8% + 8vmin); animation-delay: -3s; }
.halo i:nth-child(3) { width: 62vmin; height: 62vmin; inset-inline-end: calc(8% - 8vmin); animation-delay: -6s; opacity: .6; }
@keyframes halo { 50% { scale: 1.08; opacity: .55; } }
body.no-gl .halo { opacity: 1; }
body.no-gl #gl { display: none; }
.cursor-glow { position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(520px circle at var(--gx, 70%) var(--gy, 20%), color-mix(in srgb, var(--clinic-500) 16%, transparent), transparent 70%); transition: background .2s; }
main, .foot, .top { position: relative; z-index: 2; }

/* ------------------------------------------------------------------ top bar */
.top { position: fixed; z-index: 50; inset: 0 0 auto 0; display: flex; align-items: center; gap: 18px; padding: 14px clamp(14px, 3vw, 34px);
  transition: background .3s, backdrop-filter .3s, padding .3s; }
.scrolled .top { background: color-mix(in srgb, var(--bg) 78%, transparent); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); border-bottom: 1px solid var(--line); padding-block: 9px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; min-width: 0; }
.brand img { height: 34px; width: auto; max-width: 120px; object-fit: contain; border-radius: 8px; background: #fff; padding: 3px; }
.mono-logo { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; font: 700 16px 'Space Grotesk', sans-serif; background: linear-gradient(140deg, var(--clinic-400), var(--clinic-700)); color: var(--clinic-ink); box-shadow: 0 0 22px color-mix(in srgb, var(--clinic-500) 60%, transparent); }
.brand-name { font: 700 16px/1 'Space Grotesk', sans-serif; letter-spacing: -.02em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.links { display: flex; gap: 2px; margin-inline: auto; }
.links a { white-space: nowrap; text-decoration: none; font-size: 14px; font-weight: 500; color: var(--txt-soft); padding: 8px 14px; border-radius: 99px; transition: color .2s, background .2s; }
.links a:hover { color: #fff; background: rgba(255,255,255,.07); }
.top-right { display: flex; align-items: center; gap: 8px; }
.links + .top-right { margin-inline-start: 0; }
.lang-switch { display: flex; gap: 2px; padding: 3px; border-radius: 99px; border: 1px solid var(--line); background: rgba(255,255,255,.05); margin: 0; }
.lang-switch button { border: 0; background: none; cursor: pointer; font: inherit; font-size: 12px; font-weight: 600; padding: 5px 10px; border-radius: 99px; color: var(--txt-soft); }
.lang-switch button.on { background: var(--clinic-400); color: #04100e; }
@media (max-width: 1100px) { .links { display: none; } .top-right { margin-inline-start: auto; } }
@media (max-width: 560px) { .btn-ghost.btn:not(.btn-big) { display: none; } .brand-name { display: none; } }

.btn { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 600 14px/1 Inter, sans-serif; padding: 11px 18px; border-radius: 99px; border: 1px solid transparent; white-space: nowrap; transition: transform .25s var(--ease), box-shadow .25s, background .2s; }
.btn-glow { background: var(--clinic-400); color: #04100e; box-shadow: 0 0 0 0 transparent, 0 10px 40px -8px color-mix(in srgb, var(--clinic-400) 70%, transparent); }
.btn-glow:hover { box-shadow: 0 0 0 5px color-mix(in srgb, var(--clinic-400) 25%, transparent), 0 14px 54px -6px color-mix(in srgb, var(--clinic-400) 90%, transparent); }
.btn-ghost { border-color: var(--line); color: var(--txt); background: rgba(255,255,255,.04); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-big { font-size: 16.5px; padding: 18px 30px; }
.arrow { display: inline-block; transition: transform .25s var(--ease); }
[dir="rtl"] .arrow { transform: scaleX(-1); }
.btn:hover .arrow { transform: translateX(5px); }
[dir="rtl"] .btn:hover .arrow { transform: scaleX(-1) translateX(5px); }

/* --------------------------------------------------------------------- hero */
.hero { min-height: 100svh; display: grid; align-items: center; padding: 110px clamp(20px, 5vw, 70px) 70px; position: relative; }
.hero-in { max-width: min(760px, 100%); }
.status { display: inline-flex; align-items: center; gap: 10px; font-size: 13.5px; font-weight: 600; padding: 8px 16px; border: 1px solid var(--line); border-radius: 99px; background: rgba(255,255,255,.05); margin-bottom: 26px; }
.dot { width: 8px; height: 8px; border-radius: 50%; } .dot.on { background: #4ade80; box-shadow: 0 0 12px #4ade80; animation: beat 2.4s infinite; } .dot.off { background: #fbbf24; }
@keyframes beat { 50% { opacity: .4; } }
.mega { font-size: clamp(54px, 2rem + 9vw, 148px); font-weight: 700; line-height: .94; letter-spacing: -.05em;
  background: linear-gradient(180deg, #fff 30%, color-mix(in srgb, var(--clinic-200) 70%, #fff) 60%, var(--clinic-400)); -webkit-background-clip: text; background-clip: text; color: transparent; padding-bottom: .1em; overflow-wrap: anywhere; }
[dir="rtl"] .mega { font-size: clamp(40px, 1.6rem + 6vw, 104px); line-height: 1.3; letter-spacing: 0; }
.lede { font-size: clamp(17px, 1rem + .5vw, 22px); color: var(--txt-soft); max-width: 40ch; margin: 22px 0 0; text-shadow: 0 2px 18px rgba(0,0,0,.65); }
.mega { filter: drop-shadow(0 6px 26px rgba(0,0,0,.45)); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.cue { position: absolute; inset-inline-start: clamp(20px, 5vw, 70px); inset-block-end: 28px; display: flex; align-items: center; gap: 12px; text-decoration: none; font-size: 11.5px; font-weight: 700; letter-spacing: .18em; text-transform: uppercase; color: var(--txt-soft); }
[dir="rtl"] .cue { letter-spacing: 0; }
.cue i { width: 1px; height: 46px; background: linear-gradient(var(--clinic-300), transparent); animation: drip 2.2s ease-in-out infinite; transform-origin: top; }
@keyframes drip { 0% { scale: 1 0; } 50% { scale: 1 1; } 100% { scale: 1 1; opacity: 0; } }

/* ------------------------------------------------------------------ marquee */
.marquee { overflow: hidden; border-block: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 70%, transparent); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); padding: 20px 0; }
.run { display: flex; width: max-content; gap: 32px; animation: run 42s linear infinite; }
[dir="rtl"] .run { animation-direction: reverse; }
.run span { font: 600 clamp(34px, 3vw + 14px, 64px)/1 'Space Grotesk', sans-serif; letter-spacing: -.03em; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.4); white-space: nowrap; }
[dir="rtl"] .run span { font-family: 'Noto Kufi Arabic', sans-serif; letter-spacing: 0; }
.run span:nth-of-type(3n) { color: var(--clinic-300); -webkit-text-stroke: 0; }
.run em { color: var(--clinic-400); font-style: normal; align-self: center; font-size: 22px; }
@keyframes run { to { transform: translateX(-25%); } }
.marquee:hover .run { animation-play-state: paused; }

/* ----------------------------------------------------------------- sections */
.numbers, .about, .block, .photo-band { background: color-mix(in srgb, var(--bg) 72%, transparent); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); }
.block { padding: clamp(64px, 9vw, 130px) 0; scroll-margin-top: 64px; border-top: 1px solid var(--line); }
.head { max-width: 680px; margin-bottom: clamp(30px, 4vw, 56px); }
.eyebrow { font-size: 12px; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; color: var(--clinic-300); margin-bottom: 14px; }
[dir="rtl"] .eyebrow { letter-spacing: 0; }
h2 { font-size: clamp(34px, 1.6rem + 3.2vw, 66px); font-weight: 700; line-height: 1.02; }
[dir="rtl"] h2 { font-size: clamp(26px, 1.3rem + 1.8vw, 44px); }
.sub { color: var(--txt-soft); margin: 16px 0 0; }

.numbers { border-top: 1px solid var(--line); padding: clamp(40px, 6vw, 80px) 0; }
.grid-n { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }
.n { position: relative; padding: 28px; border-radius: 22px; border: 1px solid var(--line); overflow: hidden;
  background: radial-gradient(340px circle at var(--sx, 50%) var(--sy, 0%), color-mix(in srgb, var(--clinic-400) 22%, transparent), transparent 62%), rgba(255,255,255,.03); }
.n b { display: block; font: 700 clamp(46px, 2rem + 4vw, 88px)/1 'Space Grotesk', sans-serif; letter-spacing: -.05em; color: #fff; }
.n b.words { font-size: clamp(22px, 1.2rem + 1.2vw, 34px); line-height: 1.25; letter-spacing: -.02em; padding-block: 14px; }
.n span { font-size: 12px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; color: var(--clinic-300); }
[dir="rtl"] .n span { letter-spacing: 0; }

.about { padding: clamp(70px, 10vw, 150px) 0; border-top: 1px solid var(--line); }
.about-text { font: 500 clamp(26px, 1.2rem + 2.4vw, 54px)/1.22 'Space Grotesk', sans-serif; letter-spacing: -.035em; max-width: 24em; margin: 0; text-wrap: pretty; }
[dir="rtl"] .about-text { font-family: 'Noto Kufi Arabic', sans-serif; letter-spacing: 0; line-height: 1.7; font-size: clamp(21px, 1rem + 1.4vw, 36px); }
.js .about-text .w { opacity: .18; transition: opacity .4s; }
.js .about-text .w.lit { opacity: 1; }

.photo-band { padding: 0 0 clamp(60px, 8vw, 110px); }
.photo-frame { max-width: 1100px; margin-inline: auto; border-radius: 30px; overflow: hidden; border: 1px solid var(--line); box-shadow: 0 0 120px -30px color-mix(in srgb, var(--clinic-500) 55%, transparent);
  transform: perspective(1200px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .4s var(--ease); }
.photo-frame img { display: block; width: 100%; height: clamp(260px, 42vw, 520px); object-fit: cover; }

.dept-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.dept-list li { position: relative; display: flex; align-items: center; gap: clamp(14px, 3vw, 40px); padding: clamp(18px, 2.4vw, 30px) 8px; border-bottom: 1px solid var(--line); overflow: hidden; cursor: default;
  background: radial-gradient(420px circle at var(--sx, 50%) var(--sy, 50%), color-mix(in srgb, var(--clinic-400) 18%, transparent), transparent 60%); }
.dept-list .no { font: 600 14px 'Space Grotesk', sans-serif; color: var(--clinic-300); min-width: 2.2em; }
.dept-list .nm { font: 600 clamp(26px, 1.2rem + 2.6vw, 56px)/1.1 'Space Grotesk', sans-serif; letter-spacing: -.035em; transition: translate .35s var(--ease), color .3s; }
[dir="rtl"] .dept-list .nm { font-family: 'Noto Kufi Arabic', sans-serif; letter-spacing: 0; font-size: clamp(22px, 1rem + 1.8vw, 38px); }
.dept-list li:hover .nm { translate: 16px 0; color: var(--clinic-200); }
[dir="rtl"] .dept-list li:hover .nm { translate: -16px 0; }
.dept-list .go { margin-inline-start: auto; font-size: 26px; color: var(--clinic-300); opacity: 0; translate: -10px 10px; transition: all .35s var(--ease); }
.dept-list li:hover .go { opacity: 1; translate: 0 0; }
[dir="rtl"] .dept-list .go { scale: -1 1; }

.rail { overflow-x: auto; scroll-snap-type: x proximity; padding: 8px 0 30px; scrollbar-width: thin; scrollbar-color: var(--clinic-600) transparent; }
.rail-in { display: flex; gap: 18px; padding-inline: max(22px, calc((100vw - 1180px) / 2 + 22px)); width: max-content; }
.doc { scroll-snap-align: start; width: min(300px, 78vw); position: relative; padding: 24px; border-radius: 26px; border: 1px solid var(--line); overflow: hidden;
  background: radial-gradient(360px circle at var(--sx, 50%) var(--sy, 0%), color-mix(in srgb, var(--clinic-400) 24%, transparent), transparent 62%), rgba(255,255,255,.035);
  transform: perspective(1000px) rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg)); transition: transform .35s var(--ease), border-color .3s; }
.doc.tilting { transition: transform .06s linear, border-color .3s; border-color: color-mix(in srgb, var(--clinic-400) 60%, transparent); }
.face { position: relative; width: 100%; aspect-ratio: 1; border-radius: 20px; overflow: hidden; display: grid; place-items: center; margin-bottom: 20px; font: 700 78px/1 'Space Grotesk', sans-serif; color: var(--clinic-ink);
  background: linear-gradient(145deg, var(--clinic-400), var(--clinic-800)); }
.face img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.doc h3 { font-size: 21px; font-weight: 600; }
.doc p { margin: 6px 0 0; color: var(--txt-soft); font-size: 14.5px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 14px; }
.chips span { font-size: 12px; font-weight: 600; padding: 4px 11px; border-radius: 99px; border: 1px solid var(--line); color: var(--clinic-200); }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 18px; }
.step { position: relative; padding: 30px 28px 32px; border-radius: 26px; border: 1px solid var(--line); overflow: hidden;
  background: radial-gradient(360px circle at var(--sx, 50%) var(--sy, 0%), color-mix(in srgb, var(--clinic-400) 18%, transparent), transparent 62%), rgba(255,255,255,.03); }
.step .big { display: block; font: 700 clamp(80px, 5vw + 40px, 130px)/.9 'Space Grotesk', sans-serif; font-style: normal; color: transparent; -webkit-text-stroke: 1.5px var(--clinic-400); margin-bottom: 16px; }
.step h3 { font-size: 22px; font-weight: 600; } .step p { color: var(--txt-soft); margin: 10px 0 0; font-size: 15.5px; }

.invite { position: relative; border-radius: 36px; padding: clamp(32px, 6vw, 84px); overflow: hidden; border: 1px solid color-mix(in srgb, var(--clinic-400) 45%, transparent);
  background: radial-gradient(70% 120% at 100% 0%, color-mix(in srgb, var(--clinic-500) 55%, transparent), transparent 70%), linear-gradient(160deg, color-mix(in srgb, var(--clinic-900) 85%, #000), var(--bg)); box-shadow: 0 0 140px -40px color-mix(in srgb, var(--clinic-500) 70%, transparent); }
.invite h2 { max-width: 14em; } .invite p { color: var(--txt-soft); max-width: 46ch; margin: 18px 0 30px; }

.find { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 18px; }
@media (max-width: 820px) { .find { grid-template-columns: 1fr; } }
.facts { position: relative; border-radius: 26px; padding: 28px; border: 1px solid var(--line); display: grid; gap: 20px; align-content: start; overflow: hidden;
  background: radial-gradient(380px circle at var(--sx, 50%) var(--sy, 0%), color-mix(in srgb, var(--clinic-400) 16%, transparent), transparent 62%), rgba(255,255,255,.03); }
.k { display: block; font-size: 11.5px; font-weight: 700; letter-spacing: .15em; text-transform: uppercase; color: var(--clinic-300); } [dir="rtl"] .k { letter-spacing: 0; }
.v { display: block; font-size: 18px; font-weight: 500; } .facts a { text-decoration: none; } .facts a:hover { text-decoration: underline; }
.maplink { color: var(--clinic-300); font-weight: 700; }
.map { border-radius: 26px; overflow: hidden; border: 1px solid var(--line); min-height: 320px; }
.map iframe { width: 100%; height: 100%; min-height: 320px; border: 0; display: block; filter: grayscale(.4) invert(.92) hue-rotate(155deg) contrast(.9); }

.foot { padding: 60px 0 40px; border-top: 1px solid var(--line); overflow: hidden; background: var(--bg-2); }
.giant { font: 700 clamp(60px, 2rem + 14vw, 240px)/.9 'Space Grotesk', sans-serif; letter-spacing: -.06em; white-space: nowrap; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.18); user-select: none; margin-bottom: 30px; }
[dir="rtl"] .giant { font-family: 'Noto Kufi Arabic', sans-serif; letter-spacing: 0; line-height: 1.3; }
.foot-row { display: flex; flex-wrap: wrap; gap: 8px 28px; color: var(--txt-soft); font-size: 14px; } .foot-row strong { color: #fff; }

/* ----------------------------------------------------------------- reveals */
.js .rv { opacity: 0; translate: 0 34px; filter: blur(8px); transition: opacity .9s var(--ease) calc(var(--i, 0) * 80ms), translate .9s var(--ease) calc(var(--i, 0) * 80ms), filter .9s var(--ease) calc(var(--i, 0) * 80ms); }
.js .rv.in { opacity: 1; translate: 0 0; filter: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .rv { opacity: 1; translate: none; filter: none; }
  .js .about-text .w { opacity: 1; }
  .run { transform: none; }
}

/* ------------------------------------------------------------------ gallery */
.gallery .g-grid { display: flex; gap: 20px; overflow-x: auto; padding: 14px 4px 36px; perspective: 1500px;
  scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: var(--clinic-600) transparent; }
.gallery .g-grid::-webkit-scrollbar { height: 6px; } .gallery .g-grid::-webkit-scrollbar-thumb { background: var(--clinic-600); border-radius: 9px; }
.gallery .g-item { flex: 0 0 min(76vw, 340px); aspect-ratio: 3 / 4; scroll-snap-align: center; border-radius: 22px;
  border: 1px solid var(--line); background: var(--bg-2); transform-style: preserve-3d;
  transform: rotateY(calc(var(--ry, 0deg))) translateZ(0); transition: transform .6s var(--ease), box-shadow .6s, border-color .4s;
  box-shadow: 0 30px 60px -34px #000; }
.gallery .g-item:nth-child(even) { margin-top: 28px; }
.gallery .g-item:hover { transform: translateY(-10px) rotateY(-7deg) scale(1.02); border-color: var(--clinic-400);
  box-shadow: 0 40px 80px -30px var(--clinic-500), 0 0 0 1px var(--clinic-500); }
[dir="rtl"] .gallery .g-item:hover { transform: translateY(-10px) rotateY(7deg) scale(1.02); }
.gallery .g-open img { filter: saturate(1.05) contrast(1.03); }
.gallery .g-cap { padding: 44px 18px 16px; font-weight: 600; background: linear-gradient(to top, rgba(2, 8, 10, .88), transparent); }
@media (prefers-reduced-motion: reduce) { .gallery .g-item { transition: none; } .gallery .g-item:hover { transform: none; } }