/* KaTiAi — «неоновый скан на стеклянной бумаге». Tokens first; logical properties everywhere for RTL. */
:root{
  --night:#0B0A12; --ink:#14121F; --ink-2:#1B1830; --paper:#F6F3EE;
  --coral:#FF5E7E; --lilac:#9B7BFF; --mint:#3DF5C8; --gold:#FFD27A;
  --fg:#F2F0FA; --muted:#A7A3BC; --line:rgba(255,255,255,.10); --line-2:rgba(255,255,255,.18);
  --glass:rgba(27,24,48,.58); --glass-2:rgba(255,255,255,.06);
  --grad:linear-gradient(135deg,var(--coral),var(--lilac) 55%,var(--mint));
  --grad-ai:linear-gradient(90deg,var(--mint),var(--lilac));
  --shadow:0 24px 60px -24px rgba(0,0,0,.65);
  --r:22px; --r-s:14px;
  --head:'Tektur','Onest',system-ui,sans-serif;
  --body:'Onest',system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  color-scheme:dark;
}
:root[data-theme="light"]{
  --night:#F6F3EE; --ink:#FFFFFF; --ink-2:#F1ECF9; --fg:#17142A; --muted:#5E5974;
  --line:rgba(23,20,42,.10); --line-2:rgba(23,20,42,.18); --glass:rgba(255,255,255,.66); --glass-2:rgba(23,20,42,.04);
  --shadow:0 24px 60px -28px rgba(60,40,120,.35); color-scheme:light;
}
:lang(zh){--head:'Tektur','Noto Sans SC',system-ui,sans-serif;--body:'Noto Sans SC','Onest',system-ui,sans-serif}
:lang(ar){--head:'Noto Kufi Arabic','Tektur',system-ui,sans-serif;--body:'Noto Kufi Arabic','Onest',system-ui,sans-serif}

*{box-sizing:border-box}
[hidden]{display:none!important} /* .btn{display:inline-flex} и подобные правила той же специфичности иначе перебивают атрибут hidden */
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.6 var(--body);color:var(--fg);background:var(--night);overflow-x:hidden;-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(900px 600px at 85% -5%,rgba(155,123,255,.22),transparent 60%),
             radial-gradient(700px 500px at -10% 30%,rgba(255,94,126,.14),transparent 60%),
             radial-gradient(800px 600px at 60% 110%,rgba(61,245,200,.10),transparent 60%)}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:8px}
.wrap{width:min(1200px,100% - 32px);margin-inline:auto}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-ai{background:var(--grad-ai);-webkit-background-clip:text;background-clip:text;color:transparent}
h1,h2,h3{font-family:var(--head);line-height:1.12;margin:0;letter-spacing:-.01em}
h2{font-size:clamp(28px,4vw,46px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;padding:7px 14px;border-radius:999px;border:1px solid var(--line-2);
  background:var(--glass-2);font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.eyebrow i{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 12px var(--mint)}
.muted{color:var(--muted)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 22px;border-radius:999px;border:1px solid var(--line-2);
  background:var(--glass-2);cursor:pointer;font-weight:600;transition:transform .2s,box-shadow .2s,border-color .2s,background .2s;white-space:nowrap}
.btn:hover{transform:translateY(-2px);border-color:var(--lilac)}
.btn:active{transform:translateY(0)}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.btn.primary{background:var(--grad);border:0;color:#120F1F;box-shadow:0 16px 40px -14px rgba(255,94,126,.6)}
.btn.ai{background:linear-gradient(135deg,#2A2150,#1B1830);border-color:rgba(155,123,255,.5)}
:root[data-theme="light"] .btn.ai{background:linear-gradient(135deg,#EEE7FF,#fff)}
.btn.small{padding:9px 14px;font-size:14px}
.btn.ghost{background:transparent}
.btn.social{color:#fff;border:0;font-weight:700}
.btn.social.max{background:linear-gradient(135deg,#FF4D6A,#8B3DFF)}
.btn.social.tg{background:linear-gradient(135deg,#2AABEE,#229ED9)}
.btn.social:hover{filter:brightness(1.1)}
.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:var(--glass-2);display:grid;place-items:center;cursor:pointer}

/* ---------- header ---------- */
header.top{position:sticky;top:0;z-index:40;padding-block:12px;background:color-mix(in srgb,var(--night) 72%,transparent);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--head);font-weight:700;font-size:22px}
.brand img{width:38px;height:38px}
nav.links{display:flex;gap:22px;margin-inline-start:18px;color:var(--muted);font-size:15px}
nav.links a:hover{color:var(--fg)}
.top .spacer{flex:1}
.lang-select{background:var(--glass-2);border:1px solid var(--line);border-radius:12px;padding:8px 10px;cursor:pointer}
@media (max-width:900px){nav.links{display:none}}
@media (max-width:560px){.top .btn.primary{display:none}.brand span{display:none}}

/* ---------- hero ---------- */
.hero{position:relative;min-height:min(92vh,920px);display:flex;align-items:center;overflow:hidden;padding-block:40px 80px}
#scene{position:absolute;inset:0;width:100%;height:100%;z-index:0}
.hero .wrap{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:24px;align-items:center}
.hero h1{font-size:clamp(42px,6.6vw,86px);margin:20px 0 18px}
.hero p.lead{font-size:clamp(17px,1.6vw,20px);color:var(--muted);max-width:560px;margin:0 0 30px}
.hero .ctas{display:flex;gap:12px;flex-wrap:wrap}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:var(--glass);border:1px solid var(--line);font-size:14px;color:var(--muted);backdrop-filter:blur(10px)}
.chip b{color:var(--fg);font-weight:600}
.chip .dot{width:7px;height:7px;border-radius:50%;background:var(--mint)}
.hero-fallback{display:none}
.no-webgl .hero-fallback{display:grid;place-items:center}
.no-webgl .hero-fallback img{width:min(340px,70vw);filter:drop-shadow(0 30px 60px rgba(155,123,255,.45))}
@media (max-width:900px){.hero{flex-direction:column;align-items:stretch;min-height:auto;padding-block:44px 30px}
  .hero .wrap{grid-template-columns:1fr;order:1}
  #scene{position:relative;inset:auto;order:2;height:min(380px,90vw);margin-top:10px}}

/* ---------- glass panel ---------- */
.glass{background:var(--glass);border:1px solid var(--line-2);border-radius:var(--r);box-shadow:var(--shadow);
  backdrop-filter:blur(18px) saturate(140%);-webkit-backdrop-filter:blur(18px) saturate(140%)}
@media (max-width:700px){.glass{backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}}

section{padding-block:90px;scroll-margin-top:72px}
.head{text-align:center;max-width:720px;margin:0 auto 46px}
.head p{color:var(--muted);font-size:18px;margin:14px 0 0}

/* ---------- converter ---------- */
#app{scroll-margin-top:80px}
.converter{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,.75fr);gap:20px;padding:22px}
@media (max-width:980px){.converter{grid-template-columns:1fr}}
.pane{display:flex;flex-direction:column;gap:14px;min-width:0}
.mode{display:grid;grid-template-columns:1fr 1fr;padding:5px;border-radius:16px;background:var(--glass-2);border:1px solid var(--line)}
.mode button{border:0;background:transparent;border-radius:12px;padding:11px 10px;cursor:pointer;font-weight:600;color:var(--muted)}
.mode button[aria-pressed="true"]{background:var(--ink-2);color:var(--fg);box-shadow:inset 0 0 0 1px var(--line-2)}
.mode button[data-mode="ai"][aria-pressed="true"]{box-shadow:inset 0 0 0 1px rgba(155,123,255,.6)}
.tier-select{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:5px;border-radius:16px;background:var(--glass-2);border:1px solid var(--line);margin:8px 0}
.tier-btn{display:flex;flex-direction:column;align-items:center;gap:2px;border:0;background:transparent;border-radius:12px;padding:11px 10px;cursor:pointer;font-weight:600;color:var(--muted)}
.tier-btn[aria-pressed="true"]{background:var(--ink-2);color:var(--fg);box-shadow:inset 0 0 0 1px rgba(155,123,255,.6)}
.tier-btn small{font-weight:500;font-size:12px;opacity:.75}
.hint{font-size:13.5px;color:var(--muted);margin:0}
.drop{position:relative;border:1.5px dashed var(--line-2);border-radius:18px;padding:30px 18px;text-align:center;cursor:pointer;
  background:radial-gradient(400px 160px at 50% 0%,rgba(61,245,200,.08),transparent 70%);transition:border-color .2s,background .2s}
.drop:hover,.drop.drag{border-color:var(--mint);background:rgba(61,245,200,.06)}
.drop .big{width:58px;height:58px;margin:0 auto 10px;border-radius:18px;display:grid;place-items:center;background:var(--grad);color:#120F1F}
.drop b{display:block;font-size:17px}
.drop small{color:var(--muted)}
.drop .scanline{position:absolute;inset-inline:12px;height:2px;top:12px;border-radius:2px;background:var(--mint);box-shadow:0 0 16px var(--mint);
  opacity:0;animation:scan 2.4s ease-in-out infinite}
.drop.busy .scanline{opacity:1}
@keyframes scan{0%{top:12px}50%{top:calc(100% - 14px)}100%{top:12px}}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.row .grow{flex:1;min-width:150px}
.row .topup-amount{width:110px;flex:none}
select.field,input.field{width:100%;background:var(--glass-2);border:1px solid var(--line);border-radius:12px;padding:11px 12px;outline:none}
select.field:focus,input.field:focus{border-color:var(--lilac)}
/* color-scheme одной CSS-переменной ненадёжно красит нативный попап <option> в Chrome — цвета теста остаются
   от тёмной темы, а фон попапа — светлый системный. Красим option явно, чтобы попап совпадал с темой. */
select,select.field,.lang-select select{color-scheme:inherit}
select option{background:var(--ink-2);color:var(--fg)}
label.lbl{display:block;font-size:12.5px;color:var(--muted);margin:0 0 6px;letter-spacing:.02em}
.thumbs{display:flex;gap:10px;flex-wrap:wrap}
.thumb{position:relative;width:86px;height:110px;border-radius:12px;overflow:hidden;border:1px solid var(--line-2);background:#000;cursor:grab}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb .n{position:absolute;inset-block-end:4px;inset-inline-start:4px;font-size:11px;padding:1px 7px;border-radius:8px;background:rgba(0,0,0,.65);color:#fff}
.thumb .x{position:absolute;inset-block-start:4px;inset-inline-end:4px;width:22px;height:22px;border-radius:50%;border:0;background:rgba(0,0,0,.65);color:#fff;cursor:pointer}
.thumb.dragging{opacity:.4}
.progress{height:6px;border-radius:6px;background:var(--glass-2);overflow:hidden}
.progress i{display:block;height:100%;width:0;background:var(--grad-ai);transition:width .25s}
.status{min-height:22px;font-size:14px;color:var(--muted)}
.status.ok{color:var(--mint)}.status.bad{color:var(--coral)}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tabs button{border:1px solid var(--line);background:transparent;border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer;color:var(--muted)}
.tabs button[aria-selected="true"]{color:var(--fg);border-color:var(--lilac);background:rgba(155,123,255,.12)}
.tabs button[hidden]{display:none}
textarea.editor{width:100%;min-height:300px;resize:vertical;border-radius:16px;border:1px solid var(--line);background:color-mix(in srgb,var(--ink) 80%,transparent);
  padding:16px;font:14.5px/1.6 ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;outline:none;tab-size:2}
textarea.editor:focus{border-color:var(--lilac)}
.exports{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.exports .btn{padding:11px 8px;border-radius:12px;font-size:14px}
@media (max-width:520px){.exports{grid-template-columns:repeat(2,1fr)}}
.side{display:flex;flex-direction:column;gap:16px}
.card{background:var(--glass-2);border:1px solid var(--line);border-radius:18px;padding:16px}
.card h3{font-size:16px;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.meter{display:flex;justify-content:space-between;font-size:14px;margin-bottom:8px}
.history{display:flex;flex-direction:column;gap:8px;max-height:300px;overflow:auto}
.history-row{display:flex;gap:8px;align-items:center}
.history-row input[type="checkbox"]{flex:none;width:18px;height:18px;accent-color:var(--lilac);cursor:pointer}
.hist-select-all{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);cursor:pointer;margin-bottom:8px}
.hist-select-all input{accent-color:var(--lilac);cursor:pointer}
.history button.item{display:flex;gap:10px;align-items:center;text-align:start;width:100%;padding:10px;border-radius:12px;border:1px solid var(--line);background:transparent;cursor:pointer}
.history button.item:hover{border-color:var(--lilac)}
.history .t{flex:1;min-width:0}
.history .t b{display:block;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:600}
.history .t small{color:var(--muted);font-size:12px}
.linkbtn{background:none;border:0;padding:0;color:var(--lilac);cursor:pointer;font-size:13px}
.pro-badge{font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;background:var(--grad-ai);color:#120F1F;letter-spacing:.04em}

/* ---------- bento ---------- */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.tile{position:relative;padding:26px;border-radius:var(--r);background:var(--glass);border:1px solid var(--line);overflow:hidden;
  transform-style:preserve-3d;transition:transform .25s ease,border-color .25s;min-height:210px}
.tile:hover{border-color:var(--line-2)}
.tile h3{font-size:21px;margin:16px 0 8px}
.tile p{color:var(--muted);margin:0}
.tile .ico{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;font-size:24px;background:var(--glass-2);border:1px solid var(--line-2);transform:translateZ(30px)}
.tile.big{grid-column:span 3;grid-row:span 2;min-height:440px}
.tile.wide{grid-column:span 3}
.tile.third{grid-column:span 2}
.tile.big .demo{position:absolute;inset-inline:26px;inset-block-end:26px;height:190px;border-radius:16px;background:var(--paper);overflow:hidden;
  box-shadow:0 30px 50px -24px rgba(0,0,0,.6);transform:translateZ(40px) rotateX(8deg)}
.demo .ln{height:9px;border-radius:5px;background:#D9D3E8;margin:14px 18px 0}
.demo .beam{position:absolute;inset-inline:0;height:3px;background:var(--mint);box-shadow:0 0 18px 4px rgba(61,245,200,.7);animation:scan 3.2s ease-in-out infinite}
.tile .glow{position:absolute;width:260px;height:260px;border-radius:50%;filter:blur(60px);opacity:.35;inset-block-start:-80px;inset-inline-end:-80px;pointer-events:none}
@media (max-width:980px){.bento{grid-template-columns:repeat(2,1fr)}.tile.big,.tile.wide,.tile.third{grid-column:span 2}.tile.big{min-height:400px}}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:s}
.step{padding:26px;border-radius:var(--r);border:1px solid var(--line);background:var(--glass-2)}
.step::before{counter-increment:s;content:counter(s);display:grid;place-items:center;width:46px;height:46px;border-radius:14px;
  font-family:var(--head);font-weight:700;background:var(--grad);color:#120F1F;margin-bottom:16px}
.step h3{font-size:19px;margin-bottom:6px}.step p{margin:0;color:var(--muted)}
@media (max-width:800px){.steps{grid-template-columns:1fr}}

/* ---------- compare ---------- */
.compare{width:100%;border-collapse:separate;border-spacing:0;overflow:hidden;border-radius:var(--r);border:1px solid var(--line)}
.compare th,.compare td{padding:16px 18px;text-align:start;border-bottom:1px solid var(--line);font-size:15px}
.compare thead th{font-family:var(--head);font-size:16px;background:var(--glass-2)}
.compare td:last-child,.compare th:last-child{background:rgba(155,123,255,.08)}
.compare tr:last-child td{border-bottom:0}
.compare .yes{color:var(--mint);font-weight:600}.compare .no{color:var(--muted)}
.table-scroll{overflow-x:auto}

/* ---------- pricing ---------- */
.plans{display:grid;grid-template-columns:repeat(4,minmax(0,260px));gap:16px;justify-content:center}
.plan{padding:24px 20px;display:flex;flex-direction:column;gap:12px;position:relative}
.plan.pro{border-color:rgba(155,123,255,.55)}
.plan.pro::before{content:"";position:absolute;inset:-1px;border-radius:var(--r);padding:1px;background:var(--grad);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.plan.popular{border-color:rgba(61,245,200,.6)}
.popular-badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--grad);color:#120F1F;
  font-size:11px;font-weight:700;padding:4px 12px;border-radius:999px;white-space:nowrap}
.plan .name{font-family:var(--head);font-size:22px;display:flex;align-items:center;gap:10px}
.plan .price{font-family:var(--head);font-size:40px;line-height:1}
.plan .price small{font-family:var(--body);font-size:15px;color:var(--muted);font-weight:400}
.plan .tier-daily{margin:0;font-size:14px;font-weight:600;color:var(--mint)}
.plan ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.plan li{display:flex;gap:10px;color:var(--muted);font-size:14.5px}
.plan li::before{content:"";flex:none;width:18px;height:18px;margin-top:3px;border-radius:6px;background:var(--grad-ai);
  -webkit-mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M4 10.5l4 4 8-9' fill='none' stroke='black' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat;
  mask:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'%3E%3Cpath d='M4 10.5l4 4 8-9' fill='none' stroke='black' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat}
.plan .btn{margin-top:auto}
.price-note{max-width:760px;margin:22px auto 0;text-align:center;font-size:14px;color:var(--muted)}
@media (max-width:1180px){.plans{grid-template-columns:repeat(2,minmax(0,320px))}}
@media (max-width:640px){.plans{grid-template-columns:minmax(0,340px)}}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:10px}
.faq details{border:1px solid var(--line);border-radius:16px;background:var(--glass-2);padding:4px 20px}
.faq summary{cursor:pointer;list-style:none;padding:16px 0;font-weight:600;display:flex;justify-content:space-between;gap:16px}
.faq summary::after{content:"+";font-size:22px;color:var(--lilac);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{margin:0 0 16px;color:var(--muted)}
.faq .faq-more{margin:0 0 16px}
.faq .faq-more a{color:var(--lilac);font-weight:600;text-decoration:none}
.faq .faq-more a:hover{text-decoration:underline}

/* ---------- dialogs ---------- */
/* hard guarantee: a closed <dialog> is never shown, even on browsers without native <dialog> support (older mobile) */
dialog:not([open]){display:none!important}
dialog[open]{display:block}
dialog{border:1px solid var(--line-2);border-radius:var(--r);padding:0;background:var(--ink);color:var(--fg);width:min(460px,100% - 32px);box-shadow:var(--shadow)}
dialog::backdrop{background:rgba(8,6,16,.6);backdrop-filter:blur(6px)}
dialog .in{padding:26px;display:flex;flex-direction:column;gap:14px}
dialog h3{font-size:22px}
dialog .close{position:absolute;inset-block-start:12px;inset-inline-end:12px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--muted)}
.check input{margin-top:4px;accent-color:var(--lilac);width:18px;height:18px;flex:none}

footer{padding-block:40px 60px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}
footer .wrap{display:flex;flex-wrap:wrap;gap:16px 28px;align-items:center}
footer .spacer{flex:1}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.reveal{opacity:1;transform:none}}

/* free daily limit + rewarded ad */
.free-limit{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:6px 0 2px}
.ad-overlay{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;background:rgba(10,8,24,.78);backdrop-filter:blur(4px)}
.ad-box{max-width:420px;width:calc(100% - 40px);padding:24px;border-radius:18px;background:var(--card,#17132b);border:1px solid rgba(255,255,255,.12);text-align:center}
.ad-box .ad-title{font-weight:600;margin:0 0 14px}
.ad-slot{min-height:180px;display:flex;align-items:center;justify-content:center;border:1px dashed rgba(255,255,255,.25);border-radius:12px;color:var(--muted,#9b93c4);margin-bottom:16px}
.ad-box .btn{width:100%}