/* =========================================================
   Dr. Ibrahim Gouhar — Eye Clinic, Damanhour
   Theme: Clean & Light (clinical blue)
   ========================================================= */
:root{
  --bg:#f4f8fc;
  --bg-2:#e8f1f9;
  --surface:#ffffff;
  --surface-2:#f3f8fd;
  --line:rgba(18,45,80,.12);
  --text:#0f2236;
  --muted:#485d72;
  --muted-2:#7b8ea1;
  --brand:#2563eb;      /* clinical blue */
  --brand-2:#3b82f6;    /* blue */
  --accent:#0ea5e9;     /* sky */
  --glow:rgba(37,99,235,.28);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 22px 50px -26px rgba(20,55,100,.35);
  --maxw:1180px;
  --ink:#0a1c30;        /* dark panels (eye diagram) */
  --ink-2:#06121f;
  --on-ink:#eaf3fb;
  --on-ink-muted:#a7bccf;
  --eye-accent:#2dd4bf; /* bright blue markers on the dark eye panel */
  --font:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,"Noto Sans Arabic",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{position:relative}

/* ---------- Buttons ---------- */
.btn{
  --b1:var(--brand);--b2:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.85rem 1.5rem;border-radius:999px;font-weight:650;font-size:.98rem;
  color:#fff;background:linear-gradient(120deg,var(--b1),var(--b2));
  border:none;cursor:pointer;transition:transform .25s ease,box-shadow .25s ease,filter .25s ease;
  box-shadow:0 10px 26px -10px var(--glow);white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 36px -12px var(--glow);filter:brightness(1.05)}
.btn--ghost{background:transparent;color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn--ghost:hover{border-color:var(--brand);color:var(--brand);box-shadow:none}
.btn--sm{padding:.55rem 1.05rem;font-size:.9rem}
.btn--full{width:100%}

/* ---------- Nav ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:50;transition:background .3s ease,box-shadow .3s ease,padding .3s ease;padding:14px 0}
.nav.scrolled{background:rgba(255,255,255,.94);box-shadow:0 8px 24px -16px rgba(20,55,100,.4);padding:8px 0}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:12px}
.brand__mark{color:var(--brand);display:grid;place-items:center;filter:drop-shadow(0 4px 12px var(--glow))}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__text strong{font-size:1.02rem;letter-spacing:.2px}
.brand__text em{font-style:normal;font-size:.72rem;color:var(--muted);letter-spacing:.4px}
.nav__links{display:flex;align-items:center;gap:26px}
.nav__links a{font-size:.94rem;color:var(--muted);transition:color .2s}
.nav__links a:hover{color:var(--text)}
.nav__links a.btn{color:#fff}
.nav__toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav__toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{position:relative;padding:150px 0 90px;background:
  radial-gradient(1100px 620px at 78% -8%,rgba(37,99,235,.12),transparent 60%),
  radial-gradient(900px 600px at 10% 20%,rgba(14,165,233,.12),transparent 55%),
  linear-gradient(180deg,var(--bg),var(--bg-2));overflow:hidden}
.hero__glow{position:absolute;inset:auto -10% -40% auto;width:70vw;height:70vw;max-width:760px;max-height:760px;
  background:radial-gradient(circle,rgba(37,99,235,.12),transparent 62%);filter:blur(20px);pointer-events:none}
.hero__inner{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.pill{display:inline-flex;align-items:center;gap:.5rem;font-size:.82rem;color:var(--brand);
  background:rgba(37,99,235,.09);border:1px solid rgba(37,99,235,.24);padding:.4rem .9rem;border-radius:999px;letter-spacing:.3px}
.hero h1{font-size:clamp(2.6rem,6vw,4.4rem);line-height:1.03;letter-spacing:-1.4px;margin:20px 0 18px;font-weight:800}
.grad{background:linear-gradient(110deg,var(--brand),var(--brand-2) 55%,var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__lead{color:var(--muted);font-size:1.12rem;max-width:44ch}
.hero__lead strong{color:var(--text)}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0 34px}
.hero__trust{display:flex;gap:34px;flex-wrap:wrap}
.hero__trust div{display:flex;flex-direction:column}
.hero__trust strong{font-size:1.9rem;font-weight:800;color:var(--text);letter-spacing:-.5px}
.hero__trust span{font-size:.82rem;color:var(--muted-2);letter-spacing:.3px}

.hero__card{position:relative;background:linear-gradient(160deg,var(--surface),var(--surface-2));
  border:1px solid var(--line);border-radius:26px;padding:26px;box-shadow:var(--shadow);overflow:hidden}
.hero__card::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 70% -10%,rgba(37,99,235,.08),transparent 60%);pointer-events:none}
.hero__media{height:210px;border-radius:16px;position:relative;overflow:hidden;display:grid;place-items:center;
  background:linear-gradient(160deg,#eaf1f9,#dce8f4)}
.hero__media img{width:100%;height:100%;object-fit:cover;display:block}
.hero__media-hint{position:absolute;color:var(--muted);font-size:.82rem;text-align:center;
  padding:0 22px;line-height:1.6;pointer-events:none;display:none}
.hero__media-hint b{color:var(--brand);font-weight:700}
.hero__media.is-empty{border:1px dashed rgba(18,45,80,.22)}
.hero__media.is-empty .hero__media-hint{display:block}
.hero__cardTag{margin:16px 2px 8px;font-weight:700;font-size:1.05rem}
.hero__list{list-style:none;display:grid;gap:9px}
.hero__list li{color:var(--muted);font-size:.96rem}

.scroll-cue{position:absolute;left:50%;bottom:26px;translate:-50% 0;width:26px;height:42px;border:2px solid var(--line);border-radius:14px;display:grid;justify-items:center;padding-top:7px}
.scroll-cue span{width:4px;height:8px;background:var(--brand);border-radius:2px;animation:cue 1.6s infinite}
@keyframes cue{0%{opacity:0;transform:translateY(-4px)}40%{opacity:1}100%{opacity:0;transform:translateY(10px)}}

/* ---------- Section heads ---------- */
.section-head{max-width:680px;margin:0 auto 46px;text-align:center}
.eyebrow{font-size:.8rem;letter-spacing:2.4px;text-transform:uppercase;color:var(--brand);font-weight:700}
.section-head h2{font-size:clamp(1.9rem,3.8vw,2.9rem);line-height:1.1;letter-spacing:-.8px;margin:12px 0 12px;font-weight:800}
.section-head p{color:var(--muted);font-size:1.05rem}

/* ---------- 3D Eye Diagram (kept dark) ---------- */
.diagram{padding:96px 0;background:radial-gradient(1100px 620px at 50% 34%,#134a4d,#0a2f31 62%,#061e1f)}
.diagram .section-head h2{color:var(--on-ink)}
.diagram .section-head p{color:var(--on-ink-muted)}
.diagram .eyebrow{color:#5eead4}
.diagram .grad{background:linear-gradient(110deg,#5eead4,#2dd4bf);-webkit-background-clip:text;background-clip:text;color:transparent}
.eye-stage{position:relative;height:600px;max-width:1000px;margin:0 auto;
  border-radius:var(--radius);}
.eye-canvas{position:absolute;inset:0}
.eye-canvas canvas{display:block;width:100%;height:100%}
.eye-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}
.eye-lines line{stroke:rgba(94,234,212,.55);stroke-width:1.4;stroke-dasharray:4 4}

.eye-label{position:absolute;top:0;left:0;max-width:210px;padding:11px 14px;border-radius:12px;
  background:rgba(9,26,28,.92);border:1px solid rgba(94,234,212,.3);
  box-shadow:0 12px 30px -14px rgba(0,0,0,.8);transition:opacity .3s ease;will-change:transform,opacity;pointer-events:auto;cursor:default}
.eye-label b{display:block;font-size:.94rem;color:#fff}
.eye-label span{font-size:.76rem;color:#5eead4;letter-spacing:.2px}
.eye-label em{display:block;font-style:normal;font-size:.72rem;color:#8ba0b4;margin-top:2px}
.eye-dot{position:absolute;top:0;left:0;width:12px;height:12px;margin:-6px 0 0 -6px;border-radius:50%;
  background:var(--eye-accent);box-shadow:0 0 0 4px rgba(45,212,191,.22),0 0 14px rgba(45,212,191,.6);transition:opacity .3s;pointer-events:none}
.eye-dot::after{content:"";position:absolute;inset:-6px;border-radius:50%;border:1px solid var(--eye-accent);animation:ping 1.8s ease-out infinite;opacity:.6}
.eye-label .eye-num{display:none}
@keyframes ping{0%{transform:scale(.6);opacity:.7}100%{transform:scale(1.9);opacity:0}}
.eye-hint{position:absolute;left:50%;bottom:14px;translate:-50% 0;font-size:.82rem;color:var(--on-ink-muted);
  background:rgba(6,18,31,.6);padding:.35rem .8rem;border-radius:999px;border:1px solid rgba(255,255,255,.12);transition:opacity .5s}
.eye-hint.hide{opacity:0}
.eye-legend{display:none}

/* ---------- Services ---------- */
.services{padding:96px 0;background:var(--bg)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px}
.card{position:relative;background:linear-gradient(165deg,var(--surface),var(--surface-2));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px;overflow:hidden;transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease}
.card:hover{transform:translateY(-6px);border-color:rgba(37,99,235,.4);box-shadow:var(--shadow)}
.card::after{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--brand),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
.card:hover::after{transform:scaleX(1)}
.card__ic{width:52px;height:52px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:rgba(37,99,235,.1);color:var(--brand)}
.card__ic svg{width:26px;height:26px}
.card h3{font-size:1.16rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.95rem}

/* ---------- About ---------- */
.about{padding:96px 0;background:linear-gradient(180deg,var(--bg),var(--bg-2))}
.about__inner{display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.about__media{position:relative}
.about__photo{aspect-ratio:4/5;border-radius:24px;border:1px solid rgba(255,255,255,.14);
  background:#eaf1f9;overflow:hidden;box-shadow:var(--shadow)}
.about__photo img{width:100%;height:100%;object-fit:cover;display:block}
.about__badge{position:absolute;right:-14px;bottom:-14px;background:linear-gradient(140deg,var(--brand),var(--accent));
  color:#fff;border-radius:16px;padding:14px 18px;display:flex;flex-direction:column;line-height:1.1;box-shadow:0 18px 40px -16px var(--glow)}
.about__badge strong{font-size:1.4rem}
.about__badge span{font-size:.74rem;font-weight:600}
.about__copy h2{font-size:clamp(1.9rem,3.6vw,2.7rem);letter-spacing:-.7px;margin:12px 0 16px;line-height:1.1}
.about__copy p{color:var(--muted);margin-bottom:14px}
.about__points{list-style:none;display:grid;gap:12px;margin:22px 0 28px}
.about__points li{position:relative;padding-left:32px;color:var(--muted)}
.about__points b{color:var(--text)}
.about__points li::before{content:"✓";position:absolute;left:0;top:0;width:22px;height:22px;border-radius:50%;
  background:rgba(37,99,235,.12);color:var(--brand);display:grid;place-items:center;font-size:.8rem;font-weight:800}

/* ---------- Why ---------- */
.why{padding:96px 0;background:var(--bg-2)}
.why__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:18px}
.why__card{background:linear-gradient(165deg,var(--surface),var(--surface-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:28px 24px;text-align:center;transition:transform .3s,box-shadow .3s}
.why__card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.why__ic{font-size:2rem;display:block;margin-bottom:14px}
.why__card h3{font-size:1.1rem;margin-bottom:8px}
.why__card p{color:var(--muted);font-size:.93rem}

/* ---------- Contact ---------- */
.contact{padding:96px 0;background:linear-gradient(180deg,var(--bg-2),var(--bg))}
.contact__inner{display:grid;grid-template-columns:1fr .85fr;gap:48px;align-items:start}
.contact__info h2{font-size:clamp(1.9rem,3.6vw,2.7rem);letter-spacing:-.7px;margin:12px 0 12px}
.contact__info>p{color:var(--muted);margin-bottom:26px;max-width:46ch}
.contact__list{list-style:none;display:grid;gap:18px;margin-bottom:26px}
.contact__list li{display:flex;gap:14px;align-items:flex-start}
.contact__ic{width:44px;height:44px;flex:0 0 44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(37,99,235,.1);font-size:1.2rem}
.contact__list b{font-size:.98rem}
.contact__list small{color:var(--muted-2)}
.contact__list a:hover{color:var(--brand)}
.contact__map{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);height:230px}
.contact__map iframe{width:100%;height:100%;border:0}

/* ---------- Footer (light) ---------- */
.footer{padding:44px 0;background:#e6eef7;border-top:1px solid var(--line)}
.footer__inner{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.footer__brand{display:flex;flex-direction:column}
.footer__brand strong{font-size:1.05rem}
.footer__brand span{color:var(--muted);font-size:.86rem}
.footer__nav{display:flex;gap:20px;flex-wrap:wrap}
.footer__nav a{color:var(--muted);font-size:.9rem}
.footer__nav a:hover{color:var(--brand)}
.footer__copy{color:var(--muted-2);font-size:.82rem;width:100%;text-align:center;padding-top:8px;border-top:1px solid var(--line)}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- Responsive ---------- */
@media (max-width:920px){
  .hero__inner{grid-template-columns:1fr;gap:36px}
  .about__inner{grid-template-columns:1fr;gap:40px}
  .about__media{max-width:360px}
  .contact__inner{grid-template-columns:1fr;gap:32px}
}
@media (max-width:760px){
  .nav__links{position:fixed;inset:0 0 auto 0;top:0;flex-direction:column;align-items:stretch;gap:0;
    background:rgba(255,255,255,.97);backdrop-filter:blur(16px);padding:84px 24px 24px;transform:translateY(-102%);transition:transform .35s ease;height:auto;box-shadow:var(--shadow)}
  .nav__links.open{transform:translateY(0)}
  .nav__links a{padding:14px 4px;border-bottom:1px solid var(--line)}
  .nav__links a.btn{margin-top:14px;justify-content:center}
  .nav__toggle{display:flex;z-index:2}
  .nav__toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .nav__toggle.open span:nth-child(2){opacity:0}
  .nav__toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

  /* eye diagram -> canvas + legend list */
  .eye-stage{height:60vw;min-height:320px;max-height:420px}
      .eye-lines,.eye-dot{display:block}
  .eye-label{max-width:none;padding:0;background:none;border:none;box-shadow:none;pointer-events:none;cursor:default}
  .eye-label .eye-num{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;
    background:rgba(45,212,191,.18);border:1px solid var(--eye-accent);color:var(--eye-accent);
    font-weight:800;font-size:.9rem;box-shadow:0 0 0 4px rgba(45,212,191,.22),0 0 14px rgba(45,212,191,.6)}
  .eye-label b.eye-ttl,.eye-label span,.eye-label em{display:none}
  .eye-legend{display:grid;grid-template-columns:1fr;gap:12px;max-width:560px;margin:26px auto 0}
  .eye-legend li{display:flex;gap:14px;align-items:flex-start;background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:14px 16px}
  .eye-legend .n{width:26px;height:26px;flex:0 0 26px;border-radius:50%;background:rgba(45,212,191,.18);color:var(--eye-accent);display:grid;place-items:center;font-weight:800;font-size:.85rem}
  .eye-legend b{display:block;font-size:.98rem;color:var(--on-ink)}
  .eye-legend span{color:#5eead4;font-size:.8rem}
  .eye-legend em{font-style:normal;color:var(--on-ink-muted);font-size:.8rem}
}
@media (max-width:520px){
  .container{padding:0 18px}
  .hero{padding:120px 0 70px}
  .hero__trust{gap:22px}
  .hero__trust strong{font-size:1.5rem}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.05ms!important;scroll-behavior:auto!important}
}

/* ---------- Language toggle ---------- */
.lang-toggle{background:transparent;border:1px solid var(--line);color:var(--muted);
  padding:.42rem .85rem;border-radius:999px;font-size:.82rem;font-weight:700;cursor:pointer;
  font-family:inherit;letter-spacing:.6px;transition:color .2s,border-color .2s;line-height:1}
.lang-toggle:hover{color:var(--brand);border-color:var(--brand)}

/* ---------- RTL (Arabic) adjustments ---------- */
[dir="rtl"] .about__points li{padding-left:0;padding-right:32px}
[dir="rtl"] .about__points li::before{left:auto;right:0}
[dir="rtl"] .about__badge{right:auto;left:-14px}
[dir="rtl"] .card::after{transform-origin:right}
[dir="rtl"] h1,[dir="rtl"] .section-head h2,[dir="rtl"] .about__copy h2,
[dir="rtl"] .contact__info h2,[dir="rtl"] .hero h1{letter-spacing:normal}
[dir="rtl"] .brand__text em,[dir="rtl"] .eyebrow{letter-spacing:.4px}
[dir="rtl"] .hero__trust strong{letter-spacing:normal}
html[dir="rtl"] .btn,html[dir="rtl"] .card,html[dir="rtl"] .why__card{will-change:transform}

/* ---------- WhatsApp booking ---------- */
.btn--wa{--b1:#25d366;--b2:#12b455;color:#fff;box-shadow:0 10px 26px -10px rgba(18,180,85,.45)}
.btn--wa:hover{box-shadow:0 16px 36px -12px rgba(18,180,85,.55)}
.btn__wa{flex:0 0 auto}
.contact__cta{align-self:start}
.wa-card{background:linear-gradient(165deg,var(--surface),var(--surface-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:32px 26px;box-shadow:var(--shadow);text-align:center}
.wa-card__badge{width:66px;height:66px;border-radius:50%;display:inline-grid;place-items:center;margin-bottom:16px;
  background:rgba(37,211,102,.14);color:#1aa851}
.wa-card h3{font-size:1.4rem;margin-bottom:10px}
.wa-card p{color:var(--muted);font-size:.98rem;margin-bottom:22px}
.wa-card .btn{margin-bottom:12px}
.wa-card__note{font-size:.82rem;color:var(--muted-2);margin:8px 0 0}

.wa-float{position:fixed;bottom:24px;inset-inline-end:24px;z-index:60;width:58px;height:58px;border-radius:50%;
  display:grid;place-items:center;color:#fff;background:linear-gradient(145deg,#25d366,#12b455);
  box-shadow:0 12px 30px -6px rgba(18,180,85,.5);transition:transform .25s ease}
.wa-float:hover{transform:scale(1.08)}
.wa-float::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid #25d366;
  animation:waPing 2.2s ease-out infinite;pointer-events:none}
@keyframes waPing{0%{transform:scale(1);opacity:.65}100%{transform:scale(1.75);opacity:0}}
@media (max-width:520px){.wa-float{width:52px;height:52px;bottom:18px;inset-inline-end:18px}}