/* DGNbox — site shell. Layout: fixed top bar with a Tools drop-down, content column with an ad rail on each side (wide screens). */
/* Light theme is deliberately soft (no pure white) so it does not glare. */
:root{
  --bg:#e6e9ef; --panel:#f1f3f7; --line:#d0d5df; --fg:#1b2130; --muted:#5b6274;
  --accent:#4f6bff; --accent-ink:#3a52d6; --accent-soft:#dde3fb; --on-accent:#ffffff;
  --ok:#12805f; --ok-soft:#d6ece4; --bad:#c2352b;
  --f-sans:"Sora",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --top:60px; --rail:160px; --content:1040px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){
  --bg:#0e1116; --panel:#161a22; --line:#262c38; --fg:#e8eaf0; --muted:#9aa1b2;
  --accent:#7088ff; --accent-ink:#9aabff; --accent-soft:#1d2550; --on-accent:#0e1116;
  --ok:#4fd1a5; --ok-soft:#123228; --bad:#ff7b72; color-scheme:dark}}
:root[data-theme=dark]{
  --bg:#0e1116; --panel:#161a22; --line:#262c38; --fg:#e8eaf0; --muted:#9aa1b2;
  --accent:#7088ff; --accent-ink:#9aabff; --accent-soft:#1d2550; --on-accent:#0e1116;
  --ok:#4fd1a5; --ok-soft:#123228; --bad:#ff7b72; color-scheme:dark}

*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--fg);font-family:var(--f-sans);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--accent-ink)}
img{max-width:100%}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mono{font-family:var(--f-mono)}
.muted{color:var(--muted)}
.small{font-size:13px}
[hidden]{display:none!important}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* top bar */
.top{position:fixed;inset:0 0 auto;height:var(--top);z-index:30;background:var(--panel);border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:12px;padding-left:max(16px,env(safe-area-inset-left));padding-right:max(16px,env(safe-area-inset-right))}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--fg);font-weight:600;font-size:19px;letter-spacing:-.03em}
.brand i{font-style:normal;font-weight:400;color:var(--muted)}
.top-right{margin-left:auto;display:flex;align-items:center;gap:12px;min-width:0}
.lang{display:flex;align-items:center;gap:6px;color:var(--muted)}
.lang select{font:500 14px var(--f-sans);background:transparent;color:var(--fg);border:1px solid var(--line);border-radius:8px;padding:6px 8px}
.me{display:flex;align-items:center;gap:8px;min-width:0}
.me img{border-radius:50%}
.me-name{font-size:14px;max-width:160px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.linkbtn{background:none;border:0;color:var(--muted);font:500 13px var(--f-sans);cursor:pointer;padding:6px}
.linkbtn:hover{color:var(--fg)}
.iconbtn{background:none;border:0;color:var(--fg);padding:8px;border-radius:8px;cursor:pointer;display:grid;place-items:center}
.gbtn{min-height:40px;display:flex;align-items:center;color-scheme:light}
.gbtn iframe{color-scheme:light;background:transparent!important}

/* top navigation: Home · Tools ▾ · About · Contact */
.topnav{display:flex;align-items:center;gap:4px;margin-left:18px}
.tn{color:var(--fg);text-decoration:none;font-size:14.5px;font-weight:500;padding:7px 12px;border-radius:9px}
.tn:hover{background:var(--bg)}
.tn.on{color:var(--accent-ink);background:var(--accent-soft)}
.m-only{display:none!important}
.nav-head{margin:8px 10px 2px;font-family:var(--f-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.m-ic{display:none}
/* tools drop-down */
.menu-wrap{position:relative}
.menu-btn{display:inline-flex;align-items:center;gap:6px;font:500 14.5px var(--f-sans);color:var(--fg);background:none;border:0;border-radius:9px;padding:7px 10px 7px 12px;cursor:pointer}
.menu-btn:hover,body.menu-open .menu-btn{background:var(--bg)}
.menu-btn svg:last-child{color:var(--muted);transition:transform .15s}
body.menu-open .menu-btn svg:last-child{transform:rotate(180deg)}
.menu{display:none;position:absolute;top:calc(100% + 8px);left:0;width:min(860px,calc(100vw - 40px));max-height:calc(100vh - var(--top) - 24px);overflow-y:auto;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:0 14px 40px rgba(10,12,18,.18);z-index:40;flex-direction:column;gap:2px}
body.menu-open .menu{display:flex}
.menu hr{border:0;border-top:1px solid var(--line);margin:6px 4px}
.menu-cols{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:4px 10px}
.menu-col{display:flex;flex-direction:column;gap:1px;min-width:0}
.menu .nav-item{font-size:14px;padding:7px 9px}
.nav-item{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;color:var(--fg);text-decoration:none;font-size:14.5px}
.nav-item svg{flex:none;color:var(--muted)}
.nav-item span{flex:1;min-width:0}
.nav-item:hover{background:var(--bg)}
.nav-item.on{background:var(--accent-soft);font-weight:500}
.nav-item.on svg{color:var(--accent)}
.nav-item.soon{color:var(--muted)}
.scrim{position:fixed;inset:var(--top) 0 0 0;background:transparent;z-index:25}
.theme .t-moon{display:none}
:root[data-theme=dark] .theme .t-sun{display:none}:root[data-theme=dark] .theme .t-moon{display:inline}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .theme .t-sun{display:none}:root:not([data-theme=light]) .theme .t-moon{display:inline}}
.theme span{display:grid}

/* shell: [ad rail] content [ad rail] */
.shell{padding-top:var(--top);display:grid;grid-template-columns:var(--rail) minmax(0,var(--content)) var(--rail);justify-content:center;gap:28px;min-height:100vh;padding-inline:16px}
.rail{padding-top:32px}
.rail>.ad{position:sticky;top:calc(var(--top) + 20px);min-height:600px}
.main{min-width:0;padding:32px 0 24px;display:flex;flex-direction:column;gap:28px}

/* type + blocks */
h1,h2,h3{margin:0;letter-spacing:-.03em;line-height:1.15;text-wrap:balance}
h1{font-size:clamp(28px,4.4vw,44px);font-weight:600}
h2{font-size:22px;font-weight:600}
h3{font-size:18px;font-weight:600}
.eyebrow{margin:0;font-family:var(--f-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.lead{margin:0;font-size:17px;color:var(--muted);max-width:60ch}
.hero{display:flex;flex-direction:column;gap:16px;padding-block:16px}
.hero.narrow{max-width:720px}
.block{display:flex;flex-direction:column;gap:16px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.ticks{list-style:none;margin:0;padding:0;display:flex;gap:18px;flex-wrap:wrap;font-size:14px;color:var(--muted)}
.ticks li{display:flex;align-items:center;gap:6px}
.ticks svg{color:var(--ok)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:500 15px var(--f-sans);text-decoration:none;padding:11px 18px;border-radius:10px;border:1px solid var(--line);background:var(--panel);color:var(--fg);cursor:pointer;min-height:44px}
.btn:hover{border-color:var(--muted)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn.primary:hover{filter:brightness(1.07)}
.btn:disabled{opacity:.5;cursor:not-allowed}

.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:8px;text-decoration:none;color:var(--fg);min-width:0}
.card:hover{border-color:var(--accent)}
.card .muted{font-size:14px;flex:1}
.card.dim{opacity:.8}
.card-ic{width:42px;height:42px;border-radius:11px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;flex:none}
.card-ic.big{width:56px;height:56px;border-radius:14px}
.pill{align-self:flex-start;font:500 11px var(--f-mono);letter-spacing:.05em;text-transform:uppercase;padding:2px 8px;border-radius:99px;font-style:normal;white-space:nowrap}
.pill.live{background:var(--ok-soft);color:var(--ok)}
.pill.soon{background:var(--bg);color:var(--muted);border:1px solid var(--line)}
.pill.pro{background:var(--accent);color:var(--on-accent)}

.plans{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.plan{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:8px}
.plan.pro{border-color:var(--accent)}
.plan p{margin:0}

/* forms */
input,textarea,select{font:15px var(--f-sans);color:var(--fg)}
input[type=email],input:not([type]),input[type=text],textarea{width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--line);background:var(--bg)}
.inline-form{display:flex;flex-direction:column;gap:8px;margin-top:6px}
.inline-form .row input{flex:1 1 200px;width:auto;min-width:0}
.stack-form{display:flex;flex-direction:column;gap:14px;max-width:640px}
.two{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-weight:500;font-size:14px}
.form-msg{margin:0;font-size:14px;min-height:1.4em}
.form-msg.ok{color:var(--ok)}.form-msg.err{color:var(--bad)}
.hp{position:absolute;left:-9999px}

/* ads */
.ad{min-height:90px;display:flex;flex-direction:column;gap:4px}
.ad-label{font:11px var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.ad-preview{border:1.5px dashed var(--line);border-radius:12px;color:var(--muted);font-size:13px;display:grid;place-items:center;text-align:center;padding:12px}

.soon-list{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.soon-list.conv-list li{padding:0;border:0}
.conv-list a{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:99px;border:1px solid var(--line);color:var(--fg);text-decoration:none;font-size:13.5px;background:var(--panel)}
.conv-list a:hover{border-color:var(--accent)}
.soon-list li{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:99px;border:1px solid var(--line);color:var(--muted);font-size:13.5px}

/* tool page: how to use + FAQ */
.seo{display:flex;flex-direction:column;gap:16px;border-top:1px solid var(--line);padding-top:28px}
.seo .lead{font-size:16px;max-width:75ch}
.how{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.how li{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;gap:12px;align-items:flex-start}
.how-n{flex:none;width:30px;height:30px;border-radius:50%;background:var(--accent-soft);color:var(--accent-ink);display:grid;place-items:center;font:600 14px var(--f-mono)}
.how h3{font-size:16px;margin-bottom:4px}
.how p{margin:0;font-size:14px;color:var(--muted)}
.faq{display:flex;flex-direction:column;gap:8px;max-width:820px}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px 16px}
.faq summary{cursor:pointer;font-weight:500;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--f-mono);color:var(--muted)}
.faq details[open] summary::after{content:"−"}
.faq details p{margin:8px 0 0;color:var(--muted);font-size:14.5px}
@media (max-width:760px){.how{grid-template-columns:1fr}}

/* prose */
.prose{max-width:720px}
.prose h1{margin-bottom:12px}
.prose h2{font-size:19px;margin-top:26px}
.prose p,.prose li{color:var(--fg)}
.prose ul{padding-left:20px}

.foot{margin-top:auto;border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.foot nav{display:flex;gap:16px;flex-wrap:wrap}
.foot a{color:var(--muted);text-decoration:none}.foot a:hover{color:var(--fg)}

/* usage meter + lock (used by tool pages) */
.meter{display:flex;align-items:center;gap:10px;flex-wrap:wrap;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:10px 14px;font-size:14px}
.meter b{font-family:var(--f-mono);font-weight:500;font-variant-numeric:tabular-nums}
.meter .bar{flex:1 1 120px;height:6px;border-radius:9px;background:var(--bg);overflow:hidden;min-width:80px}
.meter .bar i{display:block;height:100%;background:var(--accent);width:100%;transition:width .4s}
.meter.low .bar i{background:var(--bad)}
.lock{position:fixed;inset:0;z-index:50;background:rgba(10,12,18,.55);display:grid;place-items:center;padding:16px}
.lock-box{background:var(--panel);border:1px solid var(--line);border-radius:16px;max-width:460px;width:100%;padding:24px;display:flex;flex-direction:column;gap:12px}
.lock-box p{margin:0}

@media (max-width:1300px){
  .shell{grid-template-columns:minmax(0,var(--content))}
  .rail{display:none}
}
@media (max-width:900px){
  .me-name{display:none}
  .topnav{margin-left:6px}
  .tn{display:none}
  .m-only{display:flex!important}
  hr.m-only{display:block!important}
  .menu-btn{border:1px solid var(--line);background:var(--bg)}
  .menu{position:fixed;left:12px;right:12px;top:calc(var(--top) + 6px);width:auto}
}
@media (max-width:620px){
  .plans,.two{grid-template-columns:1fr}
  .lang svg{display:none}
  .brand span{display:none}
  .top{gap:8px}
  .top-right{gap:6px}
  .menu-btn{padding:7px 9px}
  .m-txt{display:none}.m-ic{display:grid}
  .menu{position:fixed;left:12px;right:12px;top:calc(var(--top) + 6px);width:auto}
  .menu-cols{grid-template-columns:1fr}
  .lang select{max-width:96px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}