/* =========================================================
   Web Tools Hub — shared design system  (v2)
   Dark · Doppler identity + HeroUI-grade polish · RTL
   ---------------------------------------------------------
   Borrowed from HeroUI v3:
   • fill-based surfaces (no hard borders) + 1px inner highlight
   • big radii: cards 24px, fields 12px, buttons/tabs/chips = pill
   • press feedback: scale(.97) on buttons, .98 on small ones
   • sliding pill indicator for tabs/segmented controls
   • white switch thumb that stretches while pressed
   • glass overlays (toast, tooltip, header) with blur + saturate
   • scroll-shadow fade on horizontally scrolling tab lists
   • 2px accent focus ring with offset on every control
   ========================================================= */

:root{
  /* palette */
  --bg:#09080D; --bg-2:#111017;
  --surface:#14121B; --surface-2:#1B1923; --surface-3:#25222F;
  --default:#22202B; --default-hover:#2B2836;
  --field:#17151E; --field-hover:#1D1B26;
  --line:rgba(255,255,255,.07); --line-2:rgba(255,255,255,.12);
  --text:#EFEDF5; --muted:#A09BB0; --dim:#6F6A80;
  --violet:#8B7CFF; --violet-soft:rgba(139,124,255,.14);
  --coral:#FF6B5A; --cyan:#5CC8FF; --amber:#F5B94A;
  --cta:#7EE787; --cta-hover:#94F09C; --cta-ink:#0A1A0C; --cta-soft:rgba(126,231,135,.12);
  /* shape */
  --r-sm:10px; --r-md:12px; --r-lg:16px; --r-xl:20px; --r-2xl:24px; --pill:999px;
  --radius:16px;
  /* depth */
  --ring:0 0 0 1px var(--line);
  --hi:inset 0 1px 0 rgba(255,255,255,.05);
  --shadow-card:0 1px 0 rgba(255,255,255,.03) inset, 0 0 0 1px rgba(255,255,255,.06), 0 24px 60px -32px rgba(0,0,0,.8);
  --shadow-pop:0 0 1px 0 rgba(255,255,255,.35) inset, 0 0 0 1px rgba(255,255,255,.06), 0 18px 50px -12px rgba(0,0,0,.7);
  --focus:0 0 0 2px var(--bg), 0 0 0 4px var(--violet);
  /* motion */
  --ease:cubic-bezier(.2,0,0,1);
  --spring:cubic-bezier(.34,1.56,.64,1);
  --font:"IBM Plex Sans Arabic",system-ui,-apple-system,"Segoe UI",Tahoma,sans-serif;
  --mono:"JetBrains Mono","IBM Plex Sans Arabic",ui-monospace,Consolas,Tahoma,monospace;
  color-scheme:dark;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none!important}
html{scroll-behavior:smooth;-webkit-tap-highlight-color:transparent}
body{
  font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;min-height:100vh;display:flex;flex-direction:column;
  background-image:radial-gradient(1200px 600px at 50% -200px,rgba(139,124,255,.07),transparent 70%);
  background-repeat:no-repeat;
}
main{flex:1}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
button:disabled{cursor:not-allowed}
img,svg{display:block}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;width:100%}
.wrap.narrow{max-width:1080px}
:focus-visible{outline:none;box-shadow:var(--focus);border-radius:var(--r-sm)}
::selection{background:rgba(139,124,255,.35)}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:99px;border:3px solid var(--bg)}
::-webkit-scrollbar-track{background:transparent}
.num{font-family:var(--mono);direction:ltr;unicode-bidi:isolate;font-variant-numeric:tabular-nums}
.ltr{direction:ltr;unicode-bidi:isolate}
.muted{color:var(--muted)} .dim{color:var(--dim)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.grad{background:linear-gradient(90deg,var(--violet),#B27BFF 45%,var(--coral));-webkit-background-clip:text;background-clip:text;color:transparent;
  padding-block:.12em;-webkit-box-decoration-break:clone;box-decoration-break:clone}

/* ---------- Hero headline ----------
   Arabic needs generous leading: tall letters (ل ك ط) and marks (ّ ً) sit above the line,
   descenders (ي ع ج) below — 1.1 made the two lines collide. No negative tracking on Arabic. */
.hero h1{font-size:clamp(32px,5.6vw,68px);line-height:1.4;font-weight:700;letter-spacing:0;
  max-width:920px;margin:0 auto;padding-block:.06em;text-wrap:balance}
.hero h1 .soft{display:block;margin-top:.1em;color:#5D5870}
.hero h1 .soft .grad{display:inline}
@media (max-width:560px){
  .hero h1{font-size:clamp(30px,8.6vw,40px);line-height:1.45}
  .hero h1 .soft{margin-top:.15em}
}

/* ---------- Header (glass) ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(9,8,13,.55);
  backdrop-filter:blur(18px) saturate(1.6);-webkit-backdrop-filter:blur(18px) saturate(1.6);
  box-shadow:0 1px 0 transparent;transition:background .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.scrolled{background:rgba(12,11,17,.78);box-shadow:0 1px 0 var(--line),0 10px 30px -20px rgba(0,0,0,.8)}
.nav{display:flex;align-items:center;gap:28px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;flex:none}
.logo-mark{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;
  background:conic-gradient(from 210deg,var(--violet),var(--coral),var(--violet));
  box-shadow:0 6px 18px -6px rgba(139,124,255,.7),inset 0 1px 0 rgba(255,255,255,.35);transition:transform .4s var(--spring)}
.logo:hover .logo-mark{transform:rotate(-8deg) scale(1.06)}
.logo-mark svg{width:16px;height:16px}
.nav-links{display:flex;gap:4px;font-size:14.5px;color:var(--muted)}
.nav-links a{display:inline-flex;align-items:center;gap:7px;padding:6px 12px;border-radius:var(--pill);transition:color .15s,background .15s}
.nav-links a svg{width:16px;height:16px;flex:none;color:var(--violet);opacity:.75;transition:opacity .2s,transform .35s var(--spring)}
.nav-links a:hover{color:var(--text);background:var(--default)}
.nav-links a:hover svg{opacity:1;transform:scale(1.12) rotate(-6deg)}
.nav-links a[aria-current]{color:var(--text);background:var(--violet-soft);box-shadow:inset 0 0 0 1px rgba(139,124,255,.22)}
.nav-links a[aria-current] svg{opacity:1}
@media (max-width:1100px){.nav-links a span{display:none}.nav-links a{padding:8px}.nav-links a svg{width:18px;height:18px}}
.nav-end{margin-inline-start:auto;display:flex;align-items:center;gap:10px}

/* ---------- Buttons (pill + press scale) ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:40px;padding:0 18px;
  border-radius:var(--pill);font-size:14.5px;font-weight:600;white-space:nowrap;user-select:none;
  transition:transform .25s var(--ease),background-color .15s var(--ease),box-shadow .15s var(--ease),color .15s,filter .15s;
  will-change:transform}
.btn:active{transform:scale(.97)}
.btn svg{width:16px;height:16px;flex:none;transition:transform .25s var(--ease)}
.btn:hover svg:last-child:not(:first-child){transform:translateX(-3px)}
.btn-cta{background:var(--cta);color:var(--cta-ink);
  box-shadow:inset 0 1px 0 rgba(255,255,255,.45),inset 0 -1px 0 rgba(0,0,0,.12),0 8px 24px -10px rgba(126,231,135,.6)}
.btn-cta:hover{background:var(--cta-hover);box-shadow:inset 0 1px 0 rgba(255,255,255,.5),0 10px 30px -10px rgba(126,231,135,.75)}
.btn-ghost{background:transparent;box-shadow:inset 0 0 0 1px var(--line-2);color:var(--text)}
.btn-ghost:hover{background:var(--default)}
.btn-soft{background:var(--default);color:var(--text)}
.btn-soft:hover{background:var(--default-hover)}
.btn-sm{height:32px;padding:0 13px;font-size:13.5px}
.btn-sm:active{transform:scale(.98)}
.btn-lg{height:50px;padding:0 26px;font-size:15.5px}
.btn-lg:active{transform:scale(.96)}
.btn:disabled{opacity:.4;pointer-events:none}
.btn-row{display:flex;flex-wrap:wrap;gap:8px}
.icon-btn{position:relative;flex:none;width:36px;height:36px;border-radius:var(--pill);display:grid;place-items:center;color:var(--muted);
  background:var(--default);transition:transform .25s var(--ease),background .15s,color .15s}
.icon-btn:hover{color:var(--text);background:var(--default-hover)}
.icon-btn:active{transform:scale(.92)}
.icon-btn svg{width:16px;height:16px}
.icon-btn .ok{display:none;color:var(--cta)}
.icon-btn.done{background:var(--cta-soft)}
.icon-btn.done .ok{display:block;animation:pop .35s var(--spring)} .icon-btn.done .cp{display:none}
.icon-btn:disabled{opacity:.35;pointer-events:none}
@keyframes pop{from{transform:scale(.4);opacity:0}to{transform:scale(1);opacity:1}}

/* ---------- Tool page head ---------- */
.tool-top{position:relative;padding:44px 0 30px;isolation:isolate;overflow:hidden}
.tool-top::before{content:"";position:absolute;z-index:-1;inset:-140px 0 auto;height:440px;
  background:radial-gradient(520px 260px at 50% 30%,rgba(139,124,255,.18),transparent 70%),
             radial-gradient(380px 200px at 75% 60%,rgba(255,107,90,.06),transparent 70%)}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:4px;font-size:13px;color:var(--dim);margin-bottom:18px}
.crumbs a{padding:2px 8px;border-radius:var(--pill);transition:.15s}
.crumbs a:hover{color:var(--text);background:var(--default)}
.crumbs .crumb-cat{display:inline-flex;align-items:center;gap:6px}
.crumbs .crumb-cat svg{width:14px;height:14px;color:var(--violet)}
.crumbs [aria-current]{color:var(--muted);padding:2px 8px;background:var(--default);border-radius:var(--pill)}
.title-row{display:flex;align-items:center;gap:16px}
.tool-icon{width:54px;height:54px;border-radius:var(--r-lg);flex:none;display:grid;place-items:center;color:var(--c,var(--violet));
  background:linear-gradient(160deg,color-mix(in srgb,var(--c,var(--violet)) 22%,transparent),color-mix(in srgb,var(--c,var(--violet)) 6%,transparent));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.12),0 0 0 1px color-mix(in srgb,var(--c,var(--violet)) 25%,transparent),0 12px 30px -12px color-mix(in srgb,var(--c,var(--violet)) 60%,transparent)}
.tool-icon svg{width:24px;height:24px}
.tool-top h1{font-size:clamp(25px,3.8vw,38px);font-weight:700;line-height:1.4;letter-spacing:0;padding-block:.04em}
.tool-top .sub{color:var(--muted);margin-top:10px;max-width:660px}
.privacy-pill{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:12.5px;color:var(--cta);
  background:var(--cta-soft);padding:4px 12px;border-radius:var(--pill)}
.privacy-pill svg{width:13px;height:13px}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px}
.meta-row .privacy-pill{margin-top:0}
/* Dotted canvas — the specimen backdrop NameThatUI puts behind every component */
.dotted{background-color:#0D0C12;background-image:radial-gradient(rgba(255,255,255,.075) 1px,transparent 1.2px);background-size:14px 14px}
/* Keyboard keys */
kbd,.kbd-key{font-family:var(--mono);font-size:11.5px;color:var(--muted);background:var(--default);padding:2px 7px;border-radius:6px;
  box-shadow:inset 0 -2px 0 rgba(0,0,0,.35),inset 0 1px 0 rgba(255,255,255,.06);direction:ltr;display:inline-block}

/* ---------- Layout ---------- */
.grid-2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}
.grid-2.wide-end{grid-template-columns:minmax(0,1fr) minmax(0,1.1fr)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.stack{display:flex;flex-direction:column;gap:20px}
.section-pad{padding-bottom:28px}

/* ---------- Card (fill-based surface) ---------- */
.card{position:relative;border-radius:var(--r-2xl);overflow:hidden;background:var(--surface);
  box-shadow:var(--shadow-card);transition:box-shadow .3s var(--ease)}
.card::before{content:"";position:absolute;inset:0;pointer-events:none;border-radius:inherit;opacity:0;transition:opacity .3s;
  background:radial-gradient(420px circle at var(--mx,50%) var(--my,0%),rgba(139,124,255,.07),transparent 45%)}
.card:hover::before{opacity:1}
.card-bar{display:flex;align-items:center;gap:12px;min-height:50px;padding:10px 20px;font-size:13px;color:var(--dim);
  background:linear-gradient(180deg,rgba(255,255,255,.02),transparent);box-shadow:inset 0 -1px 0 var(--line)}
.card-bar .path{font-family:var(--mono);direction:ltr;font-size:12.5px}
.card-bar .end{margin-inline-start:auto;display:flex;align-items:center;gap:8px}
.dots{display:flex;gap:6px;direction:ltr}
.dots i{width:10px;height:10px;border-radius:50%;background:var(--surface-3);transition:background .3s}
.card:hover .dots i:nth-child(1){background:#FF6B5A}
.card:hover .dots i:nth-child(2){background:#F5B94A}
.card:hover .dots i:nth-child(3){background:#7EE787}
.card-body{position:relative;padding:24px}
.card-body > * + *{margin-top:20px}
.card-title{font-size:16px;font-weight:600}

/* ---------- Fields (filled, HeroUI style) ---------- */
.label{display:block;font-size:13.5px;font-weight:600;color:var(--muted);margin-bottom:8px}
.label small{font-weight:400;color:var(--dim)}
.hint{margin-top:7px;font-size:12.5px;color:var(--dim);min-height:20px}
.hint.err,.err-text{color:var(--coral)}
.input,.select,.textarea{
  width:100%;background:var(--field);border:0;border-radius:var(--r-md);color:var(--text);
  box-shadow:inset 0 0 0 1px var(--line),var(--hi);
  transition:background-color .15s var(--ease),box-shadow .15s var(--ease);
}
.input,.select{height:46px;padding:0 14px;font-size:15px}
.input.num{text-align:left}
.input::placeholder,.textarea::placeholder{color:var(--dim)}
.input:hover,.select:hover,.textarea:hover{background:var(--field-hover)}
.input:focus,.select:focus,.textarea:focus{outline:none;background:var(--field-hover);box-shadow:inset 0 0 0 1px rgba(139,124,255,.55),0 0 0 4px var(--violet-soft)}
.input.err,.textarea.err{box-shadow:inset 0 0 0 1px rgba(255,107,90,.6),0 0 0 4px rgba(255,107,90,.12)}
.select{appearance:none;-webkit-appearance:none;cursor:pointer;padding-left:38px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23A09BB0' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:left 12px center;background-size:16px}
.select option{background:var(--surface-2)}
.textarea{display:block;min-height:220px;padding:14px 16px;font-size:15px;line-height:1.7;resize:vertical;border-radius:var(--r-lg)}
.textarea.code{font-family:var(--mono);font-size:13.5px;direction:ltr;text-align:left;line-height:1.65;tab-size:2;white-space:pre}
.field-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.field-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}

.affix{position:relative;display:flex;align-items:center;height:46px;border-radius:var(--r-md);background:var(--field);
  box-shadow:inset 0 0 0 1px var(--line),var(--hi);transition:background-color .15s var(--ease),box-shadow .15s var(--ease)}
.affix:hover{background:var(--field-hover)}
.affix:focus-within{background:var(--field-hover);box-shadow:inset 0 0 0 1px rgba(139,124,255,.55),0 0 0 4px var(--violet-soft)}
.affix.err{box-shadow:inset 0 0 0 1px rgba(255,107,90,.6),0 0 0 4px rgba(255,107,90,.12)}
.affix input{flex:1;min-width:0;height:100%;background:none;border:0;outline:0;padding:0 14px;font-size:15px;
  font-family:var(--mono);direction:ltr;text-align:left}
.affix input:focus-visible{box-shadow:none}
.affix input::placeholder{color:var(--dim)}
.affix .unit{flex:none;margin-inline-end:6px;padding:0 10px;height:30px;display:grid;place-items:center;border-radius:var(--r-sm);
  background:var(--default);color:var(--muted);font-size:12.5px;font-weight:600}
.affix.lg{height:72px;border-radius:var(--r-xl)}
.affix.lg input{font-size:30px;font-weight:500;padding:0 20px;letter-spacing:-.01em}
.affix.lg .unit{height:40px;padding:0 14px;font-size:14px;margin-inline-end:14px;border-radius:var(--r-md)}

/* ---------- Segmented control / tabs (sliding indicator) ---------- */
.seg{position:relative;display:flex;padding:4px;gap:2px;border-radius:var(--pill);background:var(--field);box-shadow:inset 0 0 0 1px var(--line)}
.seg button{position:relative;z-index:1;flex:1;padding:8px 14px;border-radius:var(--pill);font-size:14px;color:var(--muted);
  transition:color .2s var(--ease),opacity .15s,background .2s;white-space:nowrap}
.seg button:hover{color:var(--text)}
.seg button[aria-pressed="true"],.seg button[aria-checked="true"],.seg button[aria-selected="true"]{
  background:var(--surface-3);color:var(--text);box-shadow:inset 0 1px 0 rgba(255,255,255,.08),0 2px 8px -2px rgba(0,0,0,.6)}
.seg.has-ind button[aria-pressed="true"],.seg.has-ind button[aria-checked="true"],.seg.has-ind button[aria-selected="true"]{background:transparent;box-shadow:none}
.seg-ind{position:absolute;z-index:0;top:4px;bottom:4px;left:0;width:0;border-radius:var(--pill);pointer-events:none;
  background:var(--surface-3);box-shadow:inset 0 1px 0 rgba(255,255,255,.09),0 0 0 1px rgba(255,255,255,.05),0 4px 14px -4px rgba(0,0,0,.7);
  transition:transform .35s var(--spring),width .35s var(--spring)}
.seg-ind.no-anim{transition:none}
.seg.scroll{overflow-x:auto;scrollbar-width:none;
  -webkit-mask-image:linear-gradient(to left,transparent,#000 18px,#000 calc(100% - 18px),transparent);
          mask-image:linear-gradient(to left,transparent,#000 18px,#000 calc(100% - 18px),transparent)}
.seg.scroll::-webkit-scrollbar{display:none}

/* chips */
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:13px;color:var(--muted);padding:6px 14px;border-radius:var(--pill);background:var(--default);
  transition:transform .25s var(--ease),background .15s,color .15s}
.chip:hover{color:var(--text);background:var(--default-hover)}
.chip:active{transform:scale(.95)}
.chip.mono{font-family:var(--mono);direction:ltr}
.chip[aria-pressed="true"]{color:var(--cta);background:var(--cta-soft)}

/* switch — white thumb that stretches while pressed */
.switch{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border-radius:var(--r-lg);
  background:var(--field);box-shadow:inset 0 0 0 1px var(--line);cursor:pointer;font-size:14.5px;transition:background .15s}
.switch:hover{background:var(--field-hover)}
.switch input{appearance:none;-webkit-appearance:none;position:relative;flex:none;width:44px;height:26px;border-radius:var(--pill);
  background:var(--surface-3);cursor:pointer;transition:background .25s var(--ease);box-shadow:inset 0 0 0 1px rgba(255,255,255,.06)}
.switch input::after{content:"";position:absolute;top:3px;right:3px;width:20px;height:20px;border-radius:var(--pill);background:#fff;
  box-shadow:0 2px 6px rgba(0,0,0,.4);transition:transform .3s var(--spring),width .2s var(--ease)}
.switch input:checked{background:var(--cta)}
.switch input:checked::after{transform:translateX(-18px)}
.switch input:active::after{width:25px}
.switch input:checked:active::after{transform:translateX(-13px)}
.switch input:focus-visible{box-shadow:var(--focus)}
.switch .sw-label small{display:block;font-size:12px;color:var(--dim)}
.switch-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}

/* range — HeroUI slider feel */
.range{width:100%;appearance:none;-webkit-appearance:none;height:6px;border-radius:99px;outline:none;direction:rtl;cursor:pointer;
  background:var(--surface-3)}
.range::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:#fff;
  box-shadow:0 0 0 4px rgba(126,231,135,.25),0 2px 8px rgba(0,0,0,.5);cursor:grab;transition:transform .2s var(--spring)}
.range:active::-webkit-slider-thumb{transform:scale(1.15);cursor:grabbing}
.range::-moz-range-thumb{width:20px;height:20px;border:0;border-radius:50%;background:#fff;box-shadow:0 0 0 4px rgba(126,231,135,.25)}
.range::-moz-range-progress{background:var(--cta);height:6px;border-radius:99px}
.range-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:12px}
.range-head b{font-family:var(--mono);color:var(--cta);font-size:18px}

/* ---------- Results ---------- */
.rows{display:flex;flex-direction:column;gap:8px}
.row{display:flex;align-items:center;gap:14px;padding:15px 18px;border-radius:var(--r-lg);background:var(--surface-2);
  box-shadow:var(--hi);transition:background .2s}
.row:hover{background:#201E29}
.row .k{flex:1;min-width:0}
.row .k small{display:block;font-size:12px;color:var(--dim)}
.row .k span{font-size:15px;font-weight:500}
.row .v{font-size:21px;font-weight:600;white-space:nowrap;font-family:var(--mono);direction:ltr}
.row .v em{font-style:normal;font-family:var(--font);font-size:12.5px;color:var(--dim);font-weight:500;margin-left:6px}
.row.accent .v{color:var(--violet)}
.row.hero{padding:20px 18px;
  background:linear-gradient(100deg,rgba(126,231,135,.13),rgba(126,231,135,.03) 60%),var(--surface-2);
  box-shadow:inset 0 0 0 1px rgba(126,231,135,.22),inset 0 1px 0 rgba(255,255,255,.06)}
.row.hero .v{font-size:30px;color:var(--cta);letter-spacing:-.01em}
.row.neg .v{color:var(--coral)}
.flash{animation:flash .5s var(--ease)}
@keyframes flash{from{filter:brightness(1.6)}to{filter:none}}

.stats{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
.stat{padding:16px;border-radius:var(--r-xl);background:var(--surface);box-shadow:var(--shadow-card);transition:transform .25s var(--ease)}
.stat:hover{transform:translateY(-2px)}
.stat b{display:block;font-family:var(--mono);font-size:26px;font-weight:600;line-height:1.2;direction:ltr;text-align:right}
.stat span{font-size:12.5px;color:var(--muted)}
.stat.hl b{color:var(--cta)}
.card .stat{background:var(--surface-2);box-shadow:var(--hi)}

.output{position:relative;padding:16px 18px;border-radius:var(--r-lg);background:var(--surface-2);box-shadow:var(--hi);
  font-size:15.5px;line-height:1.8;min-height:64px;word-break:break-word}
.output.mono{font-family:var(--mono);font-size:13.5px;direction:ltr;text-align:left;white-space:pre-wrap;word-break:break-all}
.output.placeholder{color:var(--dim)}

.alert{display:flex;gap:10px;align-items:flex-start;padding:12px 16px;border-radius:var(--r-lg);font-size:14px}
.alert svg{width:18px;height:18px;flex:none;margin-top:2px}
.alert.ok{background:rgba(126,231,135,.08);box-shadow:inset 0 0 0 1px rgba(126,231,135,.2);color:#B5F2BA}
.alert.bad{background:rgba(255,107,90,.08);box-shadow:inset 0 0 0 1px rgba(255,107,90,.22);color:#FFB3A9}
.alert.info{background:var(--violet-soft);box-shadow:inset 0 0 0 1px rgba(139,124,255,.2);color:#CFC8FF}

.table-wrap{overflow:auto;border-radius:var(--r-lg);max-height:420px;background:var(--surface-2);box-shadow:var(--hi)}
.table{width:100%;border-collapse:collapse;font-size:14px}
.table th,.table td{padding:11px 16px;text-align:right;border-bottom:1px solid var(--line);white-space:nowrap}
.table th{position:sticky;top:0;background:rgba(37,34,47,.92);backdrop-filter:blur(8px);color:var(--muted);font-weight:600;font-size:12.5px}
.table td.num{text-align:left}
.table tr:last-child td{border-bottom:0}
.table tbody tr{transition:background .15s}
.table tbody tr:hover{background:rgba(255,255,255,.025)}

.bar{height:8px;border-radius:99px;background:var(--surface-3);overflow:hidden;display:flex;direction:ltr}
.bar i{display:block;height:100%;transition:width .5s var(--spring)}
.legend{display:flex;flex-wrap:wrap;gap:16px;font-size:12.5px;color:var(--dim);margin-top:8px}
.legend span::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;margin-inline-end:6px;vertical-align:middle;background:var(--lc)}

.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;
  min-height:200px;padding:28px;border-radius:var(--r-xl);background:var(--field);cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Crect width='100%25' height='100%25' fill='none' rx='20' ry='20' stroke='%23FFFFFF2E' stroke-width='2' stroke-dasharray='7 9'/%3E%3C/svg%3E");
  transition:background-color .2s,transform .25s var(--ease)}
.drop:hover,.drop.over{background-color:rgba(139,124,255,.07)}
.drop.over{transform:scale(.99)}
.drop svg{width:36px;height:36px;color:var(--violet);transition:transform .35s var(--spring)}
.drop:hover svg,.drop.over svg{transform:translateY(-4px)}
.drop strong{font-size:16px}
.drop span{font-size:13px;color:var(--dim)}

/* ---------- Info & related ---------- */
.info{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding-top:12px;padding-bottom:40px}
.info > .box:only-child{grid-column:1 / -1}
.box{position:relative;padding:24px;border-radius:var(--r-2xl);background:var(--surface);box-shadow:var(--shadow-card);overflow:hidden}
.box::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .3s;
  background:radial-gradient(380px circle at var(--mx,50%) var(--my,0%),rgba(139,124,255,.07),transparent 45%)}
.box:hover::before{opacity:1}
.box h3{font-size:16px;font-weight:600;margin-bottom:12px}
.box p,.box li{color:var(--muted);font-size:14.5px}
.box ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.box li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--violet);margin-inline-end:10px;vertical-align:middle;box-shadow:0 0 8px var(--violet)}
.formula{display:block;margin-top:8px;padding:10px 14px;border-radius:var(--r-md);background:var(--surface-2);box-shadow:var(--hi);
  font-family:var(--mono);font-size:13px;color:var(--text);direction:ltr;text-align:left;white-space:normal;overflow-wrap:anywhere}
.note{margin-top:14px;font-size:13px;color:var(--dim)}

.related{padding:20px 0 80px}
.related h2{font-size:18px;font-weight:600;margin-bottom:16px}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.rel{position:relative;display:flex;align-items:center;gap:14px;padding:16px;border-radius:var(--r-xl);background:var(--surface);
  box-shadow:var(--shadow-card);transition:transform .3s var(--ease),background .2s;overflow:hidden}
.rel:hover{transform:translateY(-3px);background:var(--surface-2)}
.rel:active{transform:scale(.98)}
.rel .ic{width:42px;height:42px;flex:none;border-radius:var(--r-md);display:grid;place-items:center;background:var(--default);transition:transform .35s var(--spring)}
.rel:hover .ic{transform:scale(1.08) rotate(-4deg)}
.rel .ic svg{width:19px;height:19px}
.rel b{display:block;font-size:15px;font-weight:600}
.rel small{display:block;font-size:12.5px;color:var(--dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rel div{min-width:0}

/* ---------- Glass overlays: toast + tooltip ---------- */
.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,16px) scale(.94);opacity:0;pointer-events:none;
  display:flex;align-items:center;gap:8px;padding:11px 18px 11px 20px;border-radius:var(--pill);
  background:rgba(32,29,42,.72);backdrop-filter:blur(20px) saturate(1.8);-webkit-backdrop-filter:blur(20px) saturate(1.8);
  box-shadow:var(--shadow-pop);font-size:14px;font-weight:500;
  transition:transform .4s var(--spring),opacity .2s var(--ease);z-index:100;max-width:calc(100% - 32px)}
.toast.show{opacity:1;transform:translate(-50%,0) scale(1)}
.toast svg{width:18px;height:18px;color:var(--cta-ink);background:var(--cta);border-radius:50%;padding:3px;flex:none}
.toast.bad svg{background:var(--coral);color:#fff}

.tip{position:fixed;z-index:120;pointer-events:none;padding:6px 11px;border-radius:var(--r-sm);font-size:12.5px;font-weight:500;white-space:nowrap;
  background:rgba(32,29,42,.82);backdrop-filter:blur(16px) saturate(1.6);-webkit-backdrop-filter:blur(16px) saturate(1.6);
  box-shadow:var(--shadow-pop);opacity:0;transform:translateY(4px) scale(.96);transition:opacity .15s var(--ease),transform .2s var(--ease)}
.tip.show{opacity:1;transform:none}

/* ---------- Entrance motion ---------- */
.reveal{animation:rise .55s var(--ease) backwards;animation-delay:calc(var(--i,0) * 45ms)}
@keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}

/* ---------- Footer ---------- */
.site-footer{padding:30px 0;color:var(--dim);font-size:14px;box-shadow:inset 0 1px 0 var(--line)}
.foot{display:flex;flex-wrap:wrap;gap:16px 24px;align-items:center;justify-content:space-between}
.foot nav{display:flex;flex-wrap:wrap;gap:6px}
.foot nav a{padding:4px 10px;border-radius:var(--pill);transition:.15s}
.foot nav a:hover{color:var(--text);background:var(--default)}
.credit .sig{font-weight:600;direction:ltr;unicode-bidi:isolate;letter-spacing:.01em;
  background:linear-gradient(90deg,var(--violet),#B27BFF 50%,var(--coral));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .grid-2,.grid-2.wide-end,.info{grid-template-columns:minmax(0,1fr)}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .nav-links{display:none}
}
@media (max-width:560px){
  .wrap{padding:0 16px}
  .tool-top{padding:30px 0 22px}
  .tool-icon{width:46px;height:46px;border-radius:var(--r-md)}
  .card,.box{border-radius:var(--r-xl)}
  .card-body{padding:18px}
  .card-bar{padding:10px 16px}
  .card-bar .path{display:none}
  .field-grid,.field-grid.three,.switch-grid,.grid-3,.related-grid{grid-template-columns:minmax(0,1fr)}
  .back-btn .txt{display:none}
  .back-btn{padding:0;width:40px}
  .row{padding:13px 14px}
  .row .v{font-size:18px}
  .row.hero .v{font-size:23px}
  .affix.lg{height:62px}
  .affix.lg input{font-size:24px}
  .stat b{font-size:22px}
  .seg button{padding:8px 10px;font-size:13.5px}
}
@media (hover:none){.card::before,.box::before{display:none}}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}
@media print{.site-header,.site-footer,.related,.toast,.tip{display:none}}

/* =========================================================
   File tools — shared components
   ========================================================= */
.spinner{width:15px;height:15px;border-radius:50%;border:2px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
.progress{height:6px;border-radius:99px;background:var(--surface-3);overflow:hidden}
.progress i{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,var(--violet),var(--cta));transition:width .25s var(--ease)}
.progress-label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--dim);margin-top:6px}

/* file list (sortable rows) */
.flist{display:flex;flex-direction:column;gap:8px}
.fitem{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--r-lg);background:var(--surface-2);box-shadow:var(--hi);
  transition:transform .25s var(--ease),background .2s,box-shadow .2s}
.fitem.dragging{opacity:.5}
.fitem.drop-target{box-shadow:inset 0 0 0 1px rgba(139,124,255,.6)}
.fitem .grip{cursor:grab;color:var(--dim);display:grid;place-items:center;width:20px}
.fitem .grip svg{width:16px;height:16px}
.fitem .fic{width:38px;height:46px;flex:none;border-radius:8px;display:grid;place-items:center;font-family:var(--mono);font-size:10px;font-weight:700;
  color:var(--coral);background:rgba(255,107,90,.1);box-shadow:inset 0 0 0 1px rgba(255,107,90,.2);overflow:hidden}
.fitem .fic img,.fitem .fic canvas{width:100%;height:100%;object-fit:cover}
.fitem .fmeta{flex:1;min-width:0}
.fitem .fmeta b{display:block;font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;direction:ltr;text-align:right}
.fitem .fmeta small{font-size:12.5px;color:var(--dim)}
.fitem .acts{display:flex;gap:6px}

/* page thumbnails */
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(118px,1fr));gap:12px}
.thumb{position:relative;border-radius:12px;padding:6px;background:var(--surface-2);box-shadow:var(--hi);cursor:pointer;transition:transform .25s var(--ease),box-shadow .2s}
.thumb:hover{transform:translateY(-2px)}
.thumb canvas,.thumb img{display:block;width:100%;height:auto;border-radius:6px;background:#fff}
.thumb .pn{display:flex;justify-content:space-between;align-items:center;margin-top:6px;font-family:var(--mono);font-size:12px;color:var(--muted)}
.thumb .chk{width:18px;height:18px;border-radius:6px;background:var(--default);display:grid;place-items:center;transition:.15s}
.thumb .chk svg{width:12px;height:12px;opacity:0;color:var(--cta-ink)}
.thumb[aria-pressed="true"]{box-shadow:inset 0 0 0 2px var(--cta),0 10px 24px -12px rgba(126,231,135,.5)}
.thumb[aria-pressed="true"] .chk{background:var(--cta)}
.thumb[aria-pressed="true"] .chk svg{opacity:1}
.thumb .dl{position:absolute;top:10px;left:10px;opacity:0;transition:opacity .2s}
.thumb:hover .dl{opacity:1}
.empty-state{padding:34px 16px;text-align:center;color:var(--dim);font-size:14px}
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.toolbar .spacer{flex:1}
.toolbar .select,.toolbar .input{height:34px;width:auto;font-size:13.5px;border-radius:var(--pill);padding-top:0;padding-bottom:0}