/* ---------- Fonts (self-hosted) ---------- */
@font-face{font-family:"Montserrat";src:url(/assets/fonts/montserrat-400.woff2) format("woff2");font-weight:400;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Montserrat";src:url(/assets/fonts/montserrat-500.woff2) format("woff2");font-weight:500;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Montserrat";src:url(/assets/fonts/montserrat-700.woff2) format("woff2");font-weight:700;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Montserrat";src:url(/assets/fonts/montserrat-800.woff2) format("woff2");font-weight:800;font-display:swap;unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Vazirmatn";src:url(/assets/fonts/vazirmatn-400.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Vazirmatn";src:url(/assets/fonts/vazirmatn-500.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Vazirmatn";src:url(/assets/fonts/vazirmatn-700.woff2) format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Vazirmatn";src:url(/assets/fonts/vazirmatn-800.woff2) format("woff2");font-weight:800;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url(/assets/fonts/jetbrains-mono-400.woff2) format("woff2");font-weight:400;font-display:swap}

/* ---------- Tokens ---------- */
:root{
  --bg:#f6f7f9;--bg-2:#eef0f4;--card:#ffffff;--text:#16181d;--muted:#6b7280;--line:#e4e7ec;
  --accent:#0f9d74;--accent-2:#6d5dfc;--accent-soft:rgba(15,157,116,.1);
  --code-bg:#0f1117;--code-text:#e6e6e6;--danger:#e5484d;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px -12px rgba(16,24,40,.12);
  --radius:14px;
  --font:"Montserrat","Vazirmatn",system-ui,"Segoe UI",Tahoma,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#0b0d12;--bg-2:#11141b;--card:#151922;--text:#e8eaf0;--muted:#8b93a7;--line:#232838;
  --accent:#2dd4a3;--accent-2:#8b7dff;--accent-soft:rgba(45,212,163,.12);
  --code-bg:#080a0f;--shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -12px rgba(0,0,0,.6);
  color-scheme:dark;
}

/* ---------- Base ---------- */
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.95;font-size:16px;
  -webkit-font-smoothing:antialiased;transition:background .25s,color .25s;
  background-image:radial-gradient(900px 400px at 100% -10%,var(--accent-soft),transparent 60%),
                   radial-gradient(700px 360px at 0% -10%,rgba(109,93,252,.08),transparent 60%);
  background-repeat:no-repeat;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
::selection{background:var(--accent);color:#fff}
main{flex:1}
nav,main,footer{width:100%;max-width:880px;margin:0 auto;padding:16px}
code{font-family:var(--mono);font-size:.88em;background:var(--bg-2);border:1px solid var(--line);padding:1px 6px;border-radius:6px;direction:ltr;unicode-bidi:embed}

/* ---------- Header ---------- */
header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--card) 78%,transparent);
  backdrop-filter:saturate(1.6) blur(14px);-webkit-backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line)}
nav{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-block:12px}
nav b{font-size:20px;font-weight:800;letter-spacing:-.3px}
nav b a{color:var(--text);display:flex;align-items:center;gap:10px}
nav b a::before{content:"";width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--accent),var(--accent-2));box-shadow:0 4px 14px -4px var(--accent)}
nav b a:hover{text-decoration:none}
nav span{display:flex;align-items:center;gap:4px}
nav span a{color:var(--muted);font-weight:500;padding:6px 12px;border-radius:999px;transition:.2s}
nav span a:hover{color:var(--text);background:var(--bg-2);text-decoration:none}
nav span a.active{color:var(--accent);background:var(--accent-soft)}
.theme-btn{border:1px solid var(--line);background:var(--card);color:var(--text);width:36px;height:36px;border-radius:10px;cursor:pointer;
  display:grid;place-items:center;margin-right:6px;transition:.2s;font-size:16px}
.theme-btn:hover{border-color:var(--accent);transform:rotate(-12deg)}
#progress{position:fixed;top:0;right:0;height:3px;width:0;background:linear-gradient(90deg,var(--accent-2),var(--accent));z-index:60}

/* ---------- Hero ---------- */
.hero{padding:40px 0 10px}
.hero h1{font-size:clamp(28px,5vw,42px);font-weight:800;line-height:1.4;margin:0 0 8px;letter-spacing:-.5px}
.hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);margin:0 0 18px;max-width:560px}
.search{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:4px 14px;box-shadow:var(--shadow);max-width:460px}
.search input{border:0;background:transparent;outline:0;padding:9px 0;font:inherit;color:var(--text);width:100%}
.search kbd{font-family:var(--mono);font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:6px;padding:0 6px}

/* ---------- Posts ---------- */
.post{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px 26px;margin:18px 0;box-shadow:var(--shadow);
  transition:transform .25s,border-color .25s,box-shadow .25s;position:relative}
main>.post:hover{border-color:color-mix(in srgb,var(--accent) 45%,var(--line))}
.post-list .post:hover{transform:translateY(-3px)}
.post h2{margin:0 0 4px;font-size:20px;font-weight:700;line-height:1.6}
.post h2 a{color:var(--text)}.post h2 a:hover{color:var(--accent);text-decoration:none}
.post-list .post h2 a::after{content:"";position:absolute;inset:0}
.meta{color:var(--muted);font-size:13px;display:flex;gap:12px;flex-wrap:wrap}
.tag{display:inline-block;font-family:var(--mono);font-size:11.5px;color:var(--accent);background:var(--accent-soft);padding:0 9px;border-radius:999px;direction:ltr}
.empty{color:var(--muted);text-align:center;padding:30px}

/* ---------- Code ---------- */
pre{background:var(--code-bg);color:var(--code-text);padding:16px 18px;border-radius:12px;overflow:auto;direction:ltr;text-align:left;
  font-family:var(--mono);font-size:13.5px;line-height:1.75;border:1px solid var(--line);position:relative}
.code-wrap{position:relative}
.copy-btn{position:absolute;top:8px;left:8px;font:500 12px var(--font);background:rgba(255,255,255,.08);color:#cfd3dc;border:1px solid rgba(255,255,255,.12);
  border-radius:8px;padding:2px 10px;cursor:pointer;opacity:0;transition:.2s}
.code-wrap:hover .copy-btn,.copy-btn:focus{opacity:1}
.copy-btn.ok{color:#2dd4a3;border-color:#2dd4a3}

/* ---------- Footer ---------- */
footer{color:var(--muted);font-size:13px;border-top:1px solid var(--line);margin-top:40px;display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}
#top-btn{position:fixed;bottom:22px;left:22px;width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);
  box-shadow:var(--shadow);cursor:pointer;opacity:0;pointer-events:none;transition:.25s;font-size:18px}
#top-btn.show{opacity:1;pointer-events:auto}
#toast{position:fixed;bottom:24px;left:50%;transform:translate(-50%,20px);background:var(--text);color:var(--bg);padding:8px 18px;border-radius:10px;
  font-size:14px;opacity:0;transition:.25s;pointer-events:none;z-index:99}
#toast.show{opacity:1;transform:translate(-50%,0)}

/* ---------- Tools ---------- */
.tools-wrap{max-width:1100px}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:12px;margin:22px 0}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;cursor:pointer;text-align:right;font:inherit;color:var(--text);
  transition:.2s;display:flex;flex-direction:column;gap:2px}
.tool-card:hover{transform:translateY(-2px);border-color:var(--accent)}
.tool-card.active{border-color:var(--accent);background:var(--accent-soft)}
.tool-card .ic{font-size:22px;line-height:1.3}
.tool-card b{font-weight:700;font-size:15px}
.tool-card small{color:var(--muted);font-size:12.5px;line-height:1.7}
.panel{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow);margin-bottom:30px;animation:pop .25s ease}
@keyframes pop{from{opacity:0;transform:translateY(8px)}}
.panel h2{margin:0 0 4px;font-size:22px;font-weight:800}
.panel>p.desc{color:var(--muted);margin:0 0 18px;font-size:14px}
.row{display:flex;gap:12px;flex-wrap:wrap;align-items:end;margin-bottom:14px}
.row>*{flex:1 1 160px}
.field{display:flex;flex-direction:column;gap:4px}
.field>span{font-size:13px;color:var(--muted);font-weight:500}
input[type=text],input[type=number],input[type=password],input[type=datetime-local],input[type=date],select,textarea{
  font:inherit;font-size:14.5px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:9px 12px;outline:0;width:100%;transition:.2s}
input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea{min-height:140px;resize:vertical;font-family:var(--mono);font-size:13.5px;line-height:1.7}
.ltr{direction:ltr;text-align:left}
input[type=range]{accent-color:var(--accent);width:100%}
input[type=color]{width:100%;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--bg);padding:3px;cursor:pointer}
input[type=checkbox]{accent-color:var(--accent);width:17px;height:17px;vertical-align:middle}
label.chk{display:inline-flex;gap:6px;align-items:center;font-size:14px;cursor:pointer;flex:0 0 auto}
.btn{font:600 14px var(--font);border:1px solid var(--line);background:var(--bg-2);color:var(--text);border-radius:10px;padding:9px 18px;cursor:pointer;transition:.2s;
  display:inline-flex;align-items:center;justify-content:center;gap:6px;flex:0 0 auto;text-decoration:none}
.btn:hover{border-color:var(--accent);text-decoration:none}
.btn.primary{background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 60%,var(--accent-2)));color:#fff;border:0;box-shadow:0 6px 18px -8px var(--accent)}
.btn.primary:hover{filter:brightness(1.08)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btns{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.drop{border:2px dashed var(--line);border-radius:16px;padding:34px 20px;text-align:center;color:var(--muted);cursor:pointer;transition:.2s;background:var(--bg)}
.drop:hover,.drop.over{border-color:var(--accent);background:var(--accent-soft);color:var(--text)}
.drop b{color:var(--text);display:block;font-size:16px}
.out{font-family:var(--mono);background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 14px;direction:ltr;text-align:left;word-break:break-all;font-size:13.5px}
.kv{display:grid;grid-template-columns:auto 1fr auto;gap:6px 12px;align-items:center}
.kv>span{color:var(--muted);font-size:13.5px}
.kv>code{font-size:13.5px;padding:4px 10px;word-break:break-all}
.kv>button{font-size:12px;padding:3px 10px}
.files{display:grid;gap:10px;margin-top:16px}
.file-item{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:8px 12px;background:var(--bg)}
.file-item img{width:52px;height:52px;object-fit:cover;border-radius:8px;background:repeating-conic-gradient(#ccc 0 25%,#fff 0 50%) 0 0/12px 12px}
.file-item .info{flex:1;min-width:0;font-size:13.5px;line-height:1.7}
.file-item .info b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;direction:ltr;text-align:right}
.good{color:var(--accent)}.bad{color:var(--danger)}
.qr-layout{display:grid;grid-template-columns:1fr 300px;gap:24px;align-items:start}
.qr-preview{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:18px;display:grid;place-items:center;gap:12px;position:sticky;top:80px}
.qr-preview canvas{max-width:100%;border-radius:8px;image-rendering:pixelated}
.seg{display:inline-flex;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:3px;gap:2px;flex-wrap:wrap;margin-bottom:14px}
.seg button{font:500 13.5px var(--font);border:0;background:transparent;color:var(--muted);padding:6px 14px;border-radius:9px;cursor:pointer}
.seg button.on{background:var(--card);color:var(--text);box-shadow:var(--shadow)}
.meter{height:8px;background:var(--bg-2);border-radius:99px;overflow:hidden;margin-top:6px}
.meter i{display:block;height:100%;width:0;transition:.3s;border-radius:99px}
.swatch{height:90px;border-radius:14px;border:1px solid var(--line)}
.perm-grid{display:grid;grid-template-columns:auto repeat(3,1fr);gap:8px;align-items:center;text-align:center;max-width:420px}
.perm-grid b{font-size:13px;color:var(--muted);font-weight:500}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(110px,1fr));gap:10px;margin-top:12px}
.stats div{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:10px;text-align:center}
.stats b{display:block;font-size:22px;font-weight:800;font-family:var(--font)}
.stats span{font-size:12.5px;color:var(--muted)}

@media (max-width:760px){
  .qr-layout{grid-template-columns:1fr}.qr-preview{position:static}
  nav span a{padding:6px 8px;font-size:14px}
  nav b{font-size:17px;white-space:nowrap}nav b a::before{width:22px;height:22px}
  .tool-grid{grid-template-columns:1fr 1fr;gap:8px}
  .tool-card{padding:10px 12px}.tool-card small{display:none}
  .post{padding:18px}
  .panel{padding:18px}
}