:root{--bg:#f4f7fb;--s:#fff;--s2:#e9eff6;--ink:#0f1724;--mut:#55627a;--ln:#dbe3ee;--ac:#0a7f7c;--aci:#fff;--er:#c62f3e;--ok:#17803d}
[data-theme=dark]{--bg:#0b111c;--s:#131b2a;--s2:#1b2538;--ink:#eaf0f8;--mut:#9aa7bc;--ln:#243049;--ac:#2cc4bf;--aci:#06201f;--er:#ff6b7a;--ok:#4ade80}
*{box-sizing:border-box;margin:0}
body{font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans Arabic","Noto Sans Devanagari","Noto Sans SC",sans-serif;background:var(--bg);color:var(--ink);transition:background .3s}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--ac);outline-offset:2px}
.w{width:min(1080px,100% - 32px);margin-inline:auto}
header{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--ln)}
.nav{display:flex;align-items:center;gap:10px;height:64px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:1.2rem}.logo img{width:32px;height:32px}
nav{display:flex;gap:4px;margin-inline-start:auto}
nav a{padding:8px 12px;border-radius:10px;color:var(--mut);font-weight:600}
nav a:hover{background:var(--s2);color:var(--ink)}nav a.on{background:var(--s2);color:var(--ac)}
.ib,.langsel{height:40px;border-radius:10px;border:1px solid var(--ln);background:var(--s);padding:0 10px;cursor:pointer;width:auto}
.ib{width:40px;padding:0}#burger{display:none}
@media(max-width:820px){#burger{display:block}.nav .langsel{margin-inline-start:auto}nav{display:none;position:absolute;inset-inline:0;top:64px;flex-direction:column;background:var(--bg);padding:12px 16px;border-bottom:1px solid var(--ln);margin:0}nav.open{display:flex}}
.hero{padding:56px 0 24px;text-align:center}
h1{font-size:clamp(2rem,5.5vw,3.3rem);line-height:1.12;letter-spacing:-.03em;max-width:20ch;margin:0 auto 14px}
.lead{color:var(--mut);max-width:56ch;margin:0 auto 28px}
.card{background:var(--s);border:1px solid var(--ln);border-radius:22px;padding:clamp(16px,4vw,28px);max-width:760px;margin:0 auto;text-align:start;box-shadow:0 12px 40px -16px rgba(15,23,36,.3);display:grid;gap:12px}
.row{display:flex;gap:10px;flex-wrap:wrap}
input,select,textarea{width:100%;padding:13px 14px;border-radius:12px;border:2px solid var(--ln);background:var(--bg)}
.langsel{padding:0 10px}
input:focus,select:focus,textarea:focus{border-color:var(--ac);outline:0}.bad{border-color:var(--er)!important}
.row input,.row select{flex:1 1 220px;width:auto}
.btn{height:50px;padding:0 24px;border:0;border-radius:12px;background:var(--ac);color:var(--aci);font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:filter .2s,transform .1s}
.btn:hover{filter:brightness(1.1)}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:wait}.btn.alt{background:var(--s2);color:var(--ink)}
.bar{height:10px;border-radius:9px;background:var(--s2);overflow:hidden;margin-top:8px}.bar i{display:block;height:100%;width:0;background:var(--ac);transition:width .4s}
.res{display:grid;grid-template-columns:220px 1fr;gap:18px;align-items:center}.res img{width:100%;border-radius:12px;aspect-ratio:16/9;object-fit:cover;background:var(--s2)}
.res[hidden],#status[hidden],#result[hidden]{display:none}
.meta{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 14px}
.chip{border:0;padding:5px 12px;border-radius:99px;background:var(--s2);color:var(--mut);font-weight:600;font-size:.85rem;cursor:pointer}.chip.on{background:var(--ac);color:var(--aci)}
@media(max-width:600px){.res{grid-template-columns:1fr}.btn{width:100%}}
section.b{padding:56px 0 0}h2{font-size:1.5rem;letter-spacing:-.02em;margin-bottom:10px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;text-align:start}
.tile{display:block;background:var(--s);border:1px solid var(--ln);border-radius:16px;padding:22px;transition:transform .2s,border-color .2s}
a.tile:hover{transform:translateY(-3px);border-color:var(--ac)}.tile p,.prose p,.prose li{color:var(--mut)}
.prose{max-width:760px;padding:48px 0 0}.prose h1{text-align:start;margin:0 0 8px}.prose h2{margin-top:28px}
footer{margin-top:72px;border-top:1px solid var(--ln);padding:36px 0;color:var(--mut);font-size:.92rem}
.fg{display:grid;grid-template-columns:2fr 1fr 1fr;gap:24px}.fg a:not(.logo){display:block;padding:2px 0}.fg a:hover{color:var(--ac)}.fg h3{color:var(--ink);font-size:1rem}
@media(max-width:700px){.fg{grid-template-columns:1fr}}
#toasts{position:fixed;inset-block-end:16px;inset-inline-end:16px;display:grid;gap:8px;z-index:60}
.toast{background:var(--s);border:1px solid var(--ln);border-inline-start:5px solid var(--ok);padding:12px 16px;border-radius:12px;box-shadow:0 8px 24px rgba(0,0,0,.2);animation:in .3s}.toast.err{border-inline-start-color:var(--er)}
@keyframes in{from{opacity:0;transform:translateY(10px)}}
dialog{margin:auto;border:0;border-radius:20px;padding:28px;max-width:400px;width:calc(100% - 32px);background:var(--s);color:var(--ink);text-align:center}
dialog::backdrop{background:rgba(5,10,18,.6)}dialog h3{margin-bottom:6px}dialog p{color:var(--mut);margin-bottom:16px}dialog.ok h3{color:var(--ok)}dialog.bad h3{color:var(--er)}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}