/* افزار — تم «خزانهٔ ایمن»: تیره، تیز و فنی، هم‌رنگ سایت اصلی (وینتر)
   بدون شیشه و حباب: سطح‌های مات، قاب‌های گوشه‌دار، دکمه‌های کلیدی */
:root{
  --bg:#07050d; --card:#0f0a1d; --card2:#171030; --ink:#ebe4f7; --muted:#9a90b0;
  --line:#2b2147; --line2:#45367a;
  --brand:#a24dff; --brand-ink:#ffffff; --soft:#c9a2ff; --rose:#ff5fa8;
  --signal:#ff5fa8; --signal-ink:#2a0a1a;
  --ok:#5fd3a2; --okbg:#0d2a22; --err:#ff8aa0; --errbg:#2b1019; --warnbg:#2b2108; --infobg:#1a1233;
  --radius:4px;
  --font:'Vazirmatn','IRANSans',Tahoma,'Segoe UI',system-ui,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Consolas,'Courier New',monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;color-scheme:dark;-webkit-tap-highlight-color:transparent;scrollbar-width:thin;scrollbar-color:#a24dff #0d0820}
::selection{background:var(--brand);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0d0820}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#ff5fa8,#a24dff);border:2px solid #0d0820;border-radius:99px}
body{margin:0;min-height:100vh;min-height:100dvh;background:var(--bg);color:var(--ink);font:16px/1.85 var(--font);overflow-x:clip}
/* پس‌زمینه: شبکهٔ نازک + درخشش بالا + برف ریز (فقط transform، سبک برای موبایل) */
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:radial-gradient(ellipse 80% 45% at 50% 0,rgba(110,50,200,.32),transparent 70%),
    linear-gradient(rgba(201,162,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(201,162,255,.045) 1px,transparent 1px);
  background-size:auto,44px 44px,44px 44px;
  -webkit-mask-image:linear-gradient(#000 55%,transparent);mask-image:linear-gradient(#000 55%,transparent)}
body::after{content:"";position:fixed;left:0;right:0;top:-300px;height:calc(100% + 300px);z-index:-1;pointer-events:none;opacity:.55;
  background-image:radial-gradient(circle at 40px 60px,#fff 0 1px,transparent 1.7px),radial-gradient(circle at 190px 130px,#e3ccff 0 1.4px,transparent 2px),
    radial-gradient(circle at 110px 240px,#fff 0 .9px,transparent 1.5px),radial-gradient(circle at 260px 20px,#c9a2ff 0 1.1px,transparent 1.8px),radial-gradient(circle at 250px 270px,#fff 0 1.3px,transparent 1.9px);
  background-size:300px 300px;animation:snow 22s linear infinite;will-change:transform}
@keyframes snow{to{transform:translate3d(-18px,300px,0)}}

.wrap{position:relative;max-width:720px;margin:0 auto;padding:22px 16px calc(40px + env(safe-area-inset-bottom,0px));
  padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
[hidden]{display:none!important}

/* هدر */
.top{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:26px;padding-bottom:16px;border-bottom:1px solid var(--line);position:relative}
.top::after{content:"";position:absolute;bottom:-1px;inset-inline-start:0;width:84px;height:2px;background:linear-gradient(90deg,var(--brand),var(--rose))}
.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;font-weight:800;font-size:1.6rem;line-height:1}
.brand img{display:block;flex:none;filter:drop-shadow(0 0 10px rgba(162,77,255,.55))}
.tagline{color:var(--muted);font-size:.93rem;padding-inline-start:16px;border-inline-start:1px solid var(--line2)}

h1{font-size:1.4rem;margin:.2em 0 .6em;text-shadow:0 0 22px rgba(162,77,255,.55)}
h2{font-size:1.15rem;margin:.2em 0 .6em}
h3{font-size:1rem;margin:1.2em 0 .2em}
p{margin:.4em 0 .8em}
a{color:var(--soft)}
:focus-visible{outline:3px solid var(--rose);outline-offset:2px}

/* تب‌ها: نوار شماره‌دار؛ خط رنگی زیر تب فعال با انیمیشن باز می‌شود */
.tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;padding:1px;background:var(--line);border-radius:var(--radius);margin-bottom:18px;counter-reset:tab}
.tab{position:relative;display:flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:8px 10px;background:var(--card);border:0;
  font:inherit;font-weight:600;font-size:.95rem;line-height:1.4;color:var(--muted);cursor:pointer;transition:background .25s,color .25s;overflow:hidden}
.tab:first-child{border-start-start-radius:3px;border-end-start-radius:3px}
.tab:last-child{border-start-end-radius:3px;border-end-end-radius:3px}
.tab::before{counter-increment:tab;content:counter(tab,persian);font:700 .72rem var(--mono);color:var(--line2);transition:color .25s}
.tab::after{content:"";position:absolute;inset-inline:0;bottom:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--rose));transform:scaleX(0);transform-origin:right;transition:transform .4s var(--ease)}
.tab:hover{color:var(--ink);background:#130d26}
.tab[aria-selected=true]{color:#fff;background:var(--card2)}
.tab[aria-selected=true]::before{color:var(--rose)}
.tab[aria-selected=true]::after{transform:scaleX(1)}

/* انیمیشن تعویض تب‌ها: ورود پنل + ورود پلهٔ فرم‌ها */
.panel:not([hidden]){animation:panelIn .45s var(--ease)}
.panel:not([hidden]) .stack>*,.panel:not([hidden]) .card.prose>*{animation:rise .5s var(--ease) both}
.panel:not([hidden]) .stack>*:nth-child(1){animation-delay:.04s}
.panel:not([hidden]) .stack>*:nth-child(2){animation-delay:.09s}
.panel:not([hidden]) .stack>*:nth-child(3){animation-delay:.14s}
.panel:not([hidden]) .stack>*:nth-child(4){animation-delay:.19s}
.panel:not([hidden]) .stack>*:nth-child(5){animation-delay:.24s}
.panel:not([hidden]) .stack>*:nth-child(n+6){animation-delay:.29s}
.result-box:not([hidden]){animation:panelIn .5s var(--ease)}
@keyframes panelIn{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

/* کارت: سطح مات با دو گوشهٔ نشانه‌دار */
.card{position:relative;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:0 18px 40px -22px rgba(0,0,0,.9)}
.card::before,.card::after{content:"";position:absolute;width:18px;height:18px;pointer-events:none;border:2px solid var(--brand)}
.card::before{top:-1px;inset-inline-start:-1px;border-width:2px 0 0 2px;border-top-left-radius:4px}
.card::after{bottom:-1px;inset-inline-end:-1px;border-width:0 2px 2px 0;border-bottom-right-radius:4px}
[dir=rtl] .card::before{border-width:2px 2px 0 0;border-top-left-radius:0;border-top-right-radius:4px}
[dir=rtl] .card::after{border-width:0 0 2px 2px;border-bottom-right-radius:0;border-bottom-left-radius:4px}
.narrow{max-width:520px;margin-inline:auto}

/* فیلدها */
.field{display:block;border:0;padding:0;margin:0;min-width:0}
.stack>*+*{margin-top:16px}
.field label,.field legend{display:block;font-weight:600;margin-bottom:6px;padding:0;font-size:.95rem;color:var(--soft)}
input[type=text],input[type=password],input[type=number],select,textarea{
  width:100%;min-height:48px;font:inherit;color:var(--ink);background:var(--bg);border:1px solid var(--line2);border-radius:3px;padding:10px 14px;transition:border-color .2s,box-shadow .2s}
input::placeholder,textarea::placeholder{color:#6d6388;opacity:1}
textarea{font-family:var(--mono);font-size:.92rem;line-height:1.6;min-height:220px;resize:vertical;unicode-bidi:plaintext;white-space:pre}
select{appearance:none;-webkit-appearance:none;cursor:pointer;padding-inline-end:14px;padding-left:40px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%23c9a2ff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:left 14px center}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(162,77,255,.28)}
.field label.radio{display:flex;flex-wrap:wrap;align-items:center;gap:10px;min-height:46px;margin:8px 0;padding:6px 14px;font-weight:400;color:var(--ink);font-size:1rem;
  background:var(--bg);border:1px solid var(--line);border-radius:3px;cursor:pointer;transition:border-color .2s,background .2s}
.field label.radio:hover{border-color:var(--line2)}
.field label.radio:has(input:checked){border-color:var(--brand);background:var(--infobg)}
.radio input[type=radio]{width:20px;height:20px;margin:0;accent-color:var(--rose);flex:none}
.uses{width:84px!important;min-height:36px!important;padding:2px 8px!important;text-align:center;font-family:var(--mono)!important}

/* ناحیهٔ انتخاب فایل */
.drop{position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;text-align:center;padding:34px 14px 28px;cursor:pointer;
  background:var(--bg);border:1px dashed var(--line2);border-radius:var(--radius);transition:border-color .25s,background .25s}
.drop::before{content:"";width:44px;height:44px;margin-bottom:4px;transition:transform .35s var(--ease);
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 44 44'%3E%3Cpath d='M22 31V12M13 20l9-9 9 9M9 35h26' fill='none' stroke='%23c9a2ff' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/contain no-repeat}
.drop:hover,.drop.hover{border-color:var(--brand);background:var(--infobg)}
.drop:hover::before,.drop.hover::before{transform:translateY(-4px)}
.drop input{position:absolute;opacity:0;width:1px;height:1px}
.drop:focus-within{outline:3px solid var(--rose);outline-offset:2px}
.drop strong{overflow-wrap:anywhere;max-width:100%}
.drop small{color:var(--muted)}

/* دکمه‌ها: کلیدی با سایهٔ سخت؛ هنگام فشردن پایین می‌روند */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:46px;font:inherit;font-weight:700;padding:10px 22px;border-radius:3px;
  color:var(--ink);background:transparent;border:1px solid var(--line2);box-shadow:0 3px 0 var(--line);cursor:pointer;text-decoration:none;
  transition:transform .12s,box-shadow .12s,filter .2s,border-color .2s}
.btn:hover{border-color:var(--soft);transform:translateY(-1px)}
.btn:active{transform:translateY(3px);box-shadow:0 0 0 var(--line)}
.btn.primary{color:var(--brand-ink);background:linear-gradient(180deg,#a455f7,#7a2fe0);border-color:rgba(255,255,255,.2);box-shadow:0 4px 0 #44188f,0 10px 24px -6px rgba(122,47,224,.6)}
.btn.primary:hover{filter:brightness(1.12)}
.btn.primary:active{box-shadow:0 0 0 #44188f,0 4px 12px -4px rgba(122,47,224,.6);transform:translateY(4px)}
.btn.ghost{background:transparent;border-color:var(--line2);color:var(--ink)}
.btn.danger{background:#d6334f;color:#fff;border-color:rgba(255,255,255,.2);box-shadow:0 4px 0 #7f1a2c}
.btn.danger:active{box-shadow:0 0 0 #7f1a2c}
.btn.sm{padding:6px 14px;min-height:38px;font-size:.9rem}
.btn:disabled{opacity:.55;cursor:wait;transform:none}

.alert{border-radius:3px;padding:10px 14px;margin:12px 0;border:1px solid transparent;border-inline-start-width:4px}
.alert.err{background:var(--errbg);color:var(--err);border-color:#5a2030}
.alert.ok{background:var(--okbg);color:var(--ok);border-color:#1b5a46}
.alert.warn{background:var(--warnbg);color:#ffd88a;border-color:#6a5217}
.alert.info{background:var(--infobg);color:#d9c8ff;border-color:var(--line2)}
.progress{height:10px;background:var(--bg);border:1px solid var(--line2);border-radius:2px;overflow:hidden}
.bar{height:100%;width:0;background:repeating-linear-gradient(135deg,rgba(255,255,255,.28) 0 8px,transparent 8px 16px),linear-gradient(90deg,var(--brand),var(--rose));background-size:22.6px 22.6px,100% 100%;animation:stripes 1s linear infinite;transition:width .15s}
@keyframes stripes{to{background-position:22.6px 0,0 0}}

.meta{display:grid;gap:8px;margin:0 0 12px}
.meta>div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed var(--line2);padding-bottom:6px}
.meta dt{color:var(--muted);flex:none}
.meta dd{margin:0;font-weight:600;text-align:left;min-width:0;overflow-wrap:anywhere}
.countdown{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--rose);font-size:.9rem}
.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:12px 0}
.codebox{margin:0;padding:14px;background:var(--bg);border:1px solid var(--line2);border-radius:3px;font:.92rem/1.7 var(--mono);white-space:pre-wrap;word-break:break-word;overflow-wrap:anywhere;unicode-bidi:plaintext;max-height:70vh;overflow:auto}
.code-input{font-size:1.4rem!important;letter-spacing:.18em;text-align:center;text-transform:uppercase;font-family:var(--mono)!important}

/* نتیجه: بلیت کد دسترسی با دو بریدگی کناری */
.result-box{margin-top:22px}
.result h2{margin-top:0}
.row{display:flex;gap:8px;align-items:stretch}
.row input{flex:1;direction:ltr;text-align:left;min-width:0}
.stub{position:relative;margin:20px 0;padding:18px;text-align:center;background:linear-gradient(180deg,#1a1236,#110b24);
  box-shadow:inset 0 0 0 1px var(--line2);
  -webkit-mask:radial-gradient(circle 10px at 0 50%,#0000 98%,#000) left/51% 100% no-repeat,radial-gradient(circle 10px at 100% 50%,#0000 98%,#000) right/51% 100% no-repeat;
  mask:radial-gradient(circle 10px at 0 50%,#0000 98%,#000) left/51% 100% no-repeat,radial-gradient(circle 10px at 100% 50%,#0000 98%,#000) right/51% 100% no-repeat}
.stub::before{content:"";position:absolute;inset:0;pointer-events:none;border-top:2px solid var(--brand);border-bottom:2px solid var(--rose)}
.stub .lbl{display:block;color:var(--muted);font-size:.9rem}
.stub .code{display:block;direction:ltr;font:800 clamp(1.45rem,7.2vw,2.1rem)/1.4 var(--mono);letter-spacing:.14em;margin:2px 0 8px;user-select:all;color:#fff;text-shadow:0 0 18px rgba(162,77,255,.8);overflow-wrap:anywhere}
.facts{display:grid;gap:6px;margin:14px 0}
.facts div{display:flex;justify-content:space-between;gap:10px;border-bottom:1px dashed var(--line2);padding-bottom:4px}
.facts span:first-child{color:var(--muted);flex:none}
.facts span:last-child{min-width:0;overflow-wrap:anywhere}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.sr-copy{position:fixed;top:0;left:0;opacity:0;pointer-events:none}
.prose h3{color:var(--soft)}
.prose h3::before{content:"◆";font-size:.6em;margin-inline-end:.6em;color:var(--rose);vertical-align:middle}
.foot{margin-top:30px;padding-top:14px;border-top:1px solid var(--line);text-align:center;color:var(--muted);font-size:.85rem}

/* موبایل */
@media (max-width:760px){
  input[type=text],input[type=password],input[type=number],select,textarea{font-size:16px}
}
@media (max-width:560px){
  .wrap{padding-top:14px;padding-left:max(12px,env(safe-area-inset-left,0px));padding-right:max(12px,env(safe-area-inset-right,0px))}
  .top{gap:8px 12px;margin-bottom:18px;padding-bottom:12px}
  .brand{font-size:1.4rem}.brand img{width:40px;height:40px}
  .tagline{flex:1 1 100%;padding-inline-start:0;border-inline-start:0;font-size:.85rem}
  .tabs{grid-template-columns:1fr 1fr}
  .tab{min-height:52px;font-size:.92rem}
  .tab:first-child,.tab:last-child{border-radius:0}
  .tab:nth-child(1){border-start-start-radius:3px}.tab:nth-child(2){border-start-end-radius:3px}
  .tab:nth-child(3){border-end-start-radius:3px}.tab:nth-child(4){border-end-end-radius:3px}
  .card{padding:16px}
  .drop{padding:28px 12px 24px}
  .stack>.btn,.stack>button.btn{width:100%}
  .toolbar .btn,.actions .btn{flex:1 1 calc(50% - 10px)}
  .toolbar .countdown{flex:1 1 100%;text-align:center}
  .row{flex-wrap:wrap}.row input{flex:1 1 100%}.row .btn{flex:1}
  .code-input{font-size:1.25rem!important;letter-spacing:.1em}
  .meta>div,.facts div{flex-wrap:wrap;gap:2px 12px}
  .codebox{font-size:.88rem;max-height:60vh}
}
@media (max-width:340px){.tabs{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}