/* ============================================================
   Vizonic — vision-support / eye-health (20-tablet supplement).
   Design language: "OPTIC FOCUS" — deep indigo + cyan + white.
   Soothing sight for a screen-lifestyle. Cover archetype with a
   soft indigo glow and an iris/light motif (concentric optical
   rings + light-ray accents) — never scary eyeballs.
   ============================================================ */
:root{
  --ink:#171b3d;          /* deep indigo ink */
  --ink2:#2b3260;
  --muted:#5a60a0;
  --indigo:#1e2260;
  --indigo2:#4a52c9;
  --accent:#4a6cf7;       /* indigo */
  --accent-d:#3342c8;
  --cyan:#22c7ef;
  --bg:#f4f4fd;
  --card:#ffffff;
  --line:#dcdcf2;
  --grad:linear-gradient(100deg,#2d35a8 0%,#22c7ef 100%);
  --btn:linear-gradient(100deg,#2c2f9e 0%,#2a66d6 100%);
  --glow:rgba(74,108,247,.30);
  --font:'Segoe UI',system-ui,-apple-system,'Helvetica Neue',Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
html[lang^="ar"]{direction:rtl}
html[lang^="ar"] body{text-align:right}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.63;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}
a{text-decoration:none;color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.14;letter-spacing:-.015em}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---- header: deep indigo ---- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(23,27,61,.97);backdrop-filter:blur(10px);box-shadow:0 1px 0 rgba(255,255,255,.06)}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.brand{font-weight:800;letter-spacing:.02em;font-size:1.3rem;color:#fff}
.brand b{color:var(--cyan)}
.nav{display:flex;align-items:center;gap:22px}
.nav a{color:#d0d3f2;font-weight:600;font-size:.92rem;transition:.15s}
.nav a:hover{color:var(--cyan)}
.cta-btn{display:inline-block;background:var(--btn);color:#fff;font-weight:800;font-size:.95rem;padding:.84rem 1.5rem;border-radius:12px;box-shadow:0 12px 24px -12px rgba(34,199,239,.6);transition:transform .15s ease,box-shadow .15s ease}
.cta-btn:hover{transform:translateY(-2px);box-shadow:0 16px 30px -12px rgba(74,108,247,.6)}
.nav .cta-btn{color:#fff;padding:.55rem 1.15rem}

/* ---- hero: cover archetype, deep indigo glow + iris motif ---- */
.hero.hero-cover{background:
  radial-gradient(130% 140% at 78% -12%,#3b4bd0 0%,#231f70 55%,#171b3d 100%);
  color:#eef0ff}
.hero-cover::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background:radial-gradient(circle at 12% 118%,rgba(34,199,239,.22),transparent 46%)}
.hero-cover .wrap{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:9px;color:var(--cyan);font-weight:700;letter-spacing:.2em;text-transform:uppercase;font-size:.68rem}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--cyan)}
.hero-cover h1{color:#fff;font-size:clamp(2.2rem,5vw,3.5rem)}
.hero-cover h1 em{font-style:normal;color:var(--cyan)}
.hero-cover .lead{color:#d5d9fa}
.hero-cover .hot{color:var(--cyan);font-weight:700;font-size:.88rem;margin-top:16px}
.hero-cover .hero-visual.cover>div{position:relative;display:flex;align-items:center;justify-content:center}
/* iris / optical concentric rings + inner glow */
.hero-cover .hero-visual.cover>div::before{content:"";position:absolute;top:50%;left:50%;translate:-50% -50%;width:min(400px,64%);aspect-ratio:1;border-radius:50%;pointer-events:none;background:radial-gradient(circle,rgba(34,199,239,.38) 0%,rgba(74,108,247,.14) 48%,rgba(74,108,247,0) 72%)}
.hero-cover .hero-visual.cover>div::after{content:"";position:absolute;top:50%;left:50%;translate:-50% -50%;width:min(380px,60%);aspect-ratio:1;border-radius:50%;pointer-events:none;
  background:repeating-radial-gradient(circle,rgba(206,214,255,0) 0 20px,rgba(206,214,255,.16) 20px 21px)}
.hero-cover .hero-visual.cover>div .hero-prod{width:min(300px,34vw);filter:drop-shadow(0 32px 46px rgba(6,8,40,.55))}
.hero-actions .cta-btn{font-size:1.02rem;padding:.95rem 1.7rem}
/* soft indigo float-cards + light-ray markers */
.float-card{background:rgba(255,255,255,.96);color:var(--ink);border-radius:12px;border:1px solid #d9ddf8;box-shadow:0 16px 32px -18px rgba(5,8,40,.6);font-weight:700;font-size:.82rem;backdrop-filter:blur(4px)}
.float-card::before{content:"◎";color:var(--accent);margin-inline-end:6px}

/* ---- sections ---- */
section{padding:66px 24px}
.sec-head{max-width:740px;margin:0 auto 38px;text-align:center}
.kicker{color:var(--accent);font-weight:800;letter-spacing:.16em;text-transform:uppercase;font-size:.72rem;margin-bottom:10px}
.sec-head h2{font-size:clamp(1.55rem,2.7vw,2.25rem);color:var(--ink);font-weight:800;margin-bottom:12px}
.sec-head h2::after{content:"";display:block;width:56px;height:4px;border-radius:99px;background:var(--grad);margin:14px auto 0}
.sec-head p{color:var(--muted);font-size:1rem;max-width:62ch;margin:0 auto}
section#benefits{background:var(--bg)}
section#ingredients{background:linear-gradient(180deg,var(--bg),#ebeafb)}
section#how{background:#fff}
section#about{background:linear-gradient(180deg,#ebeafb,var(--bg))}
section#faq{background:#fff}

.ben-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.ben-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px 24px;box-shadow:0 14px 30px -24px rgba(74,108,247,.5);position:relative;overflow:hidden}
.ben-card::after{content:"";position:absolute;right:-18px;top:-18px;width:64px;height:64px;border-radius:50%;background:radial-gradient(circle,rgba(34,199,239,.22),transparent 70%)}
.ben-card .ic{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,#ececfe,#d9e6fd);display:grid;place-items:center;margin-bottom:14px}
.ben-card .ic svg{width:24px;height:24px;color:var(--accent)}
.ben-card h3{color:var(--ink);font-size:1.05rem;margin-bottom:8px}
.ben-card p{color:var(--muted);font-size:.92rem}

.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.step{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px 24px;box-shadow:0 14px 30px -24px rgba(74,108,247,.5)}
.step .num{width:46px;height:46px;border-radius:14px;background:var(--btn);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.05rem;margin-bottom:14px}
.step h3{color:var(--ink);font-size:1.05rem;margin-bottom:8px}
.step p{color:var(--muted);font-size:.92rem}

.ing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.ing-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:0 12px 26px -26px rgba(74,108,247,.55);border-top:3px solid var(--accent)}
.ing-card h3{color:var(--ink);font-size:.98rem;margin-bottom:6px}
.ing-card p{color:var(--muted);font-size:.88rem}

/* split (about) */
#about .split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background:linear-gradient(120deg,#232660,#3b4bd0);border-radius:20px;padding:46px;color:#eef0ff;box-shadow:0 22px 44px -28px rgba(35,38,96,.75)}
#about .split .kicker{color:var(--cyan)}
#about .split h2{color:#fff;font-size:clamp(1.4rem,2.4vw,1.9rem);margin-bottom:12px}
#about .split p.lead{color:#d5d9fa;font-size:1rem}
.checklist{list-style:none;margin:0 0 24px}
.checklist li{display:flex;align-items:flex-start;gap:12px;color:#eef0ff;font-weight:600;padding:9px 0;border-bottom:1px solid rgba(255,255,255,.18);font-size:.95rem}
.checklist svg{flex:none;width:20px;height:20px;color:var(--cyan);margin-top:3px}

/* quote */
.quote{background:linear-gradient(180deg,#ebeafb,#e0e6fc);color:var(--ink);text-align:center}
.quote h2{font-size:clamp(1.5rem,2.6vw,2.15rem);max-width:640px;margin:0 auto 14px}
.quote p{color:var(--accent);max-width:600px;margin:0 auto 28px;font-size:1rem}
.quote .cta-btn{background:var(--btn);color:#fff}

/* faq */
.faq-box{max-width:780px;margin:0 auto}
details{background:#fff;border:1px solid var(--line);border-radius:14px;margin-bottom:12px;box-shadow:0 10px 24px -24px rgba(74,108,247,.55);overflow:hidden}
summary{list-style:none;padding:18px 46px 18px 20px;font-weight:700;color:var(--ink);cursor:pointer;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:1.3rem;font-weight:800}
details[open] summary::after{content:"−"}
details .a{padding:0 20px 18px;color:var(--muted);font-size:.95rem}

/* cta band */
.cta-band{background:var(--btn);color:#fff;text-align:center;position:relative;overflow:hidden}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 20% 0%,rgba(255,255,255,.22),transparent 40%)}
.cta-band .wrap{position:relative}
.cta-band h2{font-size:clamp(1.6rem,3vw,2.3rem);margin-bottom:12px}
.cta-band p{color:#eaf1ff;max-width:620px;margin:0 auto 28px}
.cta-band .cta-btn{background:#fff;color:var(--accent);box-shadow:0 16px 30px -14px rgba(10,12,50,.5)}

/* simple subpages */
.simple{background:var(--bg);padding:62px 24px}
.simple .wrap{max-width:820px}
.simple .sec-head h1{color:var(--ink);font-size:clamp(1.7rem,3vw,2.3rem);margin-bottom:8px}
.simple .sec-head h1::after{content:"";display:block;width:56px;height:4px;border-radius:99px;background:var(--grad);margin:14px auto 0}
.simple p{color:var(--muted);margin-bottom:14px}
.simple .tip{background:#eef0fd;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:16px 18px;color:var(--accent);font-size:.95rem;margin:18px 0}
.cta-wrapper{text-align:center;margin-top:28px}
.simple h2{color:var(--ink);font-size:1.3rem;margin:26px 0 12px}

/* footer */
.site-footer{background:#14173a;color:#cfd3f2;padding:54px 24px 30px}
.footer-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-bottom:30px}
.site-footer h4{color:#fff;font-size:.9rem;margin-bottom:12px;text-transform:uppercase;letter-spacing:.06em}
.site-footer p{font-size:.86rem;color:#a0a7d8}
.site-footer ul{list-style:none;display:flex;flex-direction:column}
.site-footer li{margin-bottom:8px}
.site-footer a{color:#c2c7ee;font-size:.9rem}
.site-footer a:hover{color:var(--cyan)}
.ft-buy{display:inline-block;background:var(--btn);color:#fff !important;font-weight:700;padding:9px 18px;border-radius:999px;margin-bottom:6px;box-shadow:0 4px 14px rgba(0,0,0,.3)}
.ft-buy:hover{filter:brightness(1.08);color:#fff}
.footer-grid{align-items:start}
.ft-brand p{max-width:38ch;opacity:.9}
.footer-bot{border-top:1px solid rgba(255,255,255,.14);padding-top:20px;color:#888fcd;font-size:.82rem;text-align:center}
.lang-block{margin-bottom:28px}
.lang-label{color:#a0a7d8;font-size:.8rem;text-transform:uppercase;letter-spacing:.1em;margin-bottom:12px}
.lang-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.lang-link{display:flex;align-items:center;gap:10px;min-height:56px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.16);color:#e6e9fd;padding:.45rem .7rem;border-radius:10px;font-size:.86rem;transition:.15s;overflow:hidden}
.lang-link:hover{background:rgba(34,199,239,.14);border-color:var(--cyan)}
.lang-link.active{background:var(--btn);color:#fff;border-color:var(--cyan);font-weight:700}
.lang-link img{display:inline-block;vertical-align:middle;width:22px;height:15px;object-fit:cover;flex:none;border-radius:2px}
.lang-link span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* focus states */
a:focus-visible,summary:focus-visible{outline:3px solid rgba(34,199,239,.65);outline-offset:2px;border-radius:8px}
.cta-btn:focus-visible{outline:3px solid rgba(51,66,200,.6);outline-offset:3px}

/* responsive */
@media (max-width:960px){.ben-grid,.how-grid{grid-template-columns:1fr 1fr}#about .split{grid-template-columns:1fr;padding:34px}}
@media (max-width:720px){
  .site-header{position:static}
  .header-in{flex-direction:column;gap:10px;padding:12px 14px;height:auto;flex-wrap:wrap}
  .nav{flex-wrap:wrap;justify-content:center;row-gap:8px}
  .ben-grid,.how-grid,.ing-grid{grid-template-columns:1fr}
  #about .split{grid-template-columns:1fr;gap:14px}
  .footer-grid{grid-template-columns:1fr;gap:24px}
  section{padding:50px 18px}
  .hero-cover .hero-visual.cover>div .hero-prod{width:min(200px,55vw)}
}
@media (max-width:640px){
  .sec-head h2{font-size:1.6rem}
  .hero-cover h1{font-size:2rem}
  .lang-list{grid-template-columns:1fr 1fr}
  .float-card{font-size:.76rem;padding:9px 11px}
}
@media (max-width:460px){
  .lang-link{min-height:52px;font-size:.8rem;padding:6px 10px}
  .footer-bot{text-align:center}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}