/* PDFDrawer — design system
   The drawer/desk: deep slate-ink, warm paper, one electric indigo accent.
   Futuristic, elegant, trustable. All motion is functional. */
:root{
  --ink:#141B2E; --ink-deep:#0A0F1E; --ink-soft:#2A3350; --ink-grad:#232B52;
  --paper:#FAF6EE; --paper-soft:#F2EBDC; --card:#FFFFFF; --line:#E2D9C6;
  --muted:#545E75; --accent:#4F46E5; --accent-deep:#3730A3; --accent-soft:#ECEAFF;
  --good:#177245; --bad:#B3261E;
  --radius:16px; --shadow:0 6px 24px rgba(10,15,30,.12);
  --serif:Georgia,"Times New Roman",Times,serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--paper);font-size:17px;line-height:1.55}
a{color:var(--accent-deep);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}

/* ---------- header ---------- */
.site-header{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-in{max-width:1180px;margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-weight:700;font-size:1.28rem;letter-spacing:-.02em;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand img{width:42px;height:42px;display:block}
.main-nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.main-nav a{color:var(--ink);padding:8px 12px;border-radius:10px;font-size:.98rem}
.main-nav a:hover{background:var(--accent-soft);text-decoration:none;color:var(--accent-deep)}

/* ---------- layout ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:0 18px 10px}

/* ---------- hero / home ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(130deg,var(--ink-deep),var(--ink-grad) 55%,var(--accent-deep) 130%);color:#fff;border-radius:0 0 26px 26px;margin:0 -18px;padding:44px 34px 38px}
.hero h1{margin:0 0 10px;font-family:var(--serif);font-weight:600;font-size:2.25rem;line-height:1.16;letter-spacing:-.01em;color:#FFFFFF}
.hero p{margin:0 0 22px;color:#C9CDF2;font-size:1.07rem;max-width:700px}
.hero-badges{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.hero-badges span{background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.22);color:#FFFFFF;
  border-radius:999px;padding:7px 14px;font-size:.9rem;font-weight:600}
.search-row{display:flex;max-width:560px;background:#fff;border-radius:14px;padding:6px;box-shadow:var(--shadow)}
.search-row input{flex:1;border:0;outline:0;font-size:1.05rem;padding:10px 12px;color:var(--ink);min-width:0;width:100%}
.page-search{margin:6px 0 10px;border:1px solid var(--line);box-shadow:none}
.cat-block{padding:28px 0 4px}
.cat-block h2{font-size:1.45rem;margin:0 0 16px;color:var(--ink);letter-spacing:-.01em}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.tool-card{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:var(--radius);padding:20px 18px;display:block;color:var(--ink);box-shadow:0 2px 10px rgba(10,15,30,.05);transition:transform .12s ease,box-shadow .12s ease}
.tool-card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--accent)}
.tool-card .icon{font-size:1.7rem;line-height:1;display:block;margin-bottom:10px}
.tool-card h3{margin:0 0 5px;font-size:1.08rem;color:var(--ink)}
.tool-card p{margin:0;color:var(--muted);font-size:.94rem}

/* ---------- tool pages ---------- */
.crumbs{font-size:.9rem;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted)}
main h1{font-family:var(--serif);font-weight:600;font-size:1.95rem;margin:10px 0 8px;color:var(--ink);letter-spacing:-.01em;line-height:1.22}
.answer-first{background:var(--accent-soft);border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:12px;padding:15px 19px;margin:0 0 20px;font-size:1.03rem;color:var(--ink-soft);max-width:880px}

/* ---------- the tool app ---------- */
.tool-app{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:24px;max-width:880px}
.dropzone{border:2px dashed var(--accent);background:var(--accent-soft);border-radius:16px;padding:30px 18px;text-align:center;cursor:pointer;transition:background .12s ease}
.dropzone:hover,.dropzone:focus{background:#E0DCFF;outline:none}
.dropzone.drag{background:#D8D3FF;border-color:var(--accent-deep)}
.dz-icon{font-size:2rem;line-height:1}
.dz-title{font-size:1.12rem;font-weight:700;color:var(--ink);margin-top:8px}
.dz-browse{color:var(--accent-deep);text-decoration:underline}
.dz-sub{color:var(--muted);font-size:.92rem;margin-top:4px}
.file-list{list-style:none;margin:14px 0 0;padding:0}
.file-list:empty{display:none}
.file-item{display:flex;align-items:center;gap:12px;border:1px solid var(--line);border-radius:12px;padding:9px 12px;margin-bottom:8px;background:var(--paper)}
.file-item .thumb{width:44px;height:44px;object-fit:cover;border-radius:8px;flex:0 0 auto}
.file-item .fmeta{min-width:0;flex:1}
.file-item .fname{display:block;font-weight:600;font-size:.96rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-item .fsize{color:var(--muted);font-size:.85rem}
.file-remove{border:1px solid var(--line);background:#fff;border-radius:9px;width:34px;height:34px;cursor:pointer;font-size:1rem;color:var(--bad);flex:0 0 auto}
.file-remove:hover{border-color:var(--bad)}
.tool-controls{margin-top:16px}
.tool-controls:empty{display:none}
.ctl-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.field{margin-bottom:4px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:.97rem}
.field input[type=text],.field input[type=number],.field select{width:100%;padding:12px 13px;font-size:1.02rem;border:1.5px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);outline:none}
.field input:focus,.field select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,70,229,.18)}
.field input[type=range]{width:100%;accent-color:var(--accent)}
.field .val{font-weight:700;color:var(--accent-deep)}
.check{display:flex;align-items:center;gap:9px;font-weight:600;font-size:.97rem;padding-top:26px}
.check input{width:19px;height:19px;accent-color:var(--accent)}
.ctl-note{color:var(--muted);font-size:.93rem;margin:2px 0 0}
.process-btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:12px;padding:15px 26px;
  font-size:1.1rem;font-weight:800;cursor:pointer;width:100%;margin-top:18px}
.process-btn:hover:not(:disabled){background:var(--accent-deep)}
.process-btn:disabled{opacity:.45;cursor:not-allowed}
.tool-status{margin-top:14px;font-size:.98rem;color:var(--ink-soft);min-height:1.2em}
.tool-status:empty{display:none}
.tool-status.error{color:var(--bad);font-weight:600}
.tool-results{display:none;margin-top:16px;background:var(--paper-soft);border:1px solid var(--line);border-radius:14px;padding:16px 18px}
.tool-results.show{display:block}
.tool-results h3{margin:0 0 6px;font-size:1.05rem;color:var(--ink)}
.result-stats{color:var(--muted);font-size:.93rem;margin:0 0 10px}
.dl-row{display:flex;flex-wrap:wrap;gap:10px}
.dl-btn{display:inline-block;background:var(--ink);color:#fff;border-radius:10px;padding:11px 18px;font-weight:700;font-size:.98rem}
.dl-btn:hover{background:var(--ink-soft);text-decoration:none}
.dl-btn.zip{background:var(--accent-deep)}
.privacy-note{color:var(--muted);font-size:.9rem;margin:14px 0 0}

/* sign pad */
.sign-modes{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.sign-mode{border:1.5px solid var(--line);background:#fff;border-radius:999px;padding:8px 16px;font-weight:700;cursor:pointer;color:var(--ink)}
.sign-mode.active{background:var(--accent);border-color:var(--accent);color:#fff}
#sign-pad{width:100%;height:180px;border:1.5px solid var(--line);border-radius:12px;background:#fff;touch-action:none;cursor:crosshair}
.sign-typed-preview{font-family:"Segoe Script","Brush Script MT",cursive;font-size:2.2rem;border:1.5px solid var(--line);border-radius:12px;background:#fff;padding:16px 18px;min-height:84px;color:var(--ink)}
.sign-actions{display:flex;gap:10px;margin-top:10px}
.sign-actions button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 16px;font-weight:600;cursor:pointer}

/* ---------- content ---------- */
.steps{max-width:880px}
.steps h2,.expl h2{font-size:1.4rem;color:var(--ink);margin:26px 0 8px;letter-spacing:-.01em}
.steps ol{margin:0;padding-left:22px}
.steps li{margin-bottom:7px}
.expl{max-width:880px;padding:6px 0 4px}
.expl p{margin:0 0 12px}
.faq{max-width:880px}
.faq h2{font-size:1.3rem;color:var(--ink);margin:24px 0 12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;color:var(--ink)}
.faq details p{margin:8px 0 2px}
.related{padding:8px 0 30px}
.related h2{font-size:1.3rem;color:var(--ink);margin:18px 0 14px}
article.page{max-width:820px;padding-bottom:16px}
article.page h1{margin-top:22px}
article.page h2{font-size:1.25rem;color:var(--ink);margin:22px 0 6px}
.embed-list li{margin-bottom:7px}

/* ---------- embed ---------- */
.embed-box{max-width:880px;margin:26px 0}
.embed-box h2{font-size:1.3rem;color:var(--ink);margin:0 0 8px}
.embed-code{display:block;font-family:ui-monospace,Consolas,Menlo,monospace;font-size:.82rem;line-height:1.45;
  color:var(--ink-soft);background:var(--paper-soft);border:1px solid var(--line);border-radius:12px;padding:12px 14px;white-space:pre-wrap;word-break:break-all}
.embed-credit{color:var(--muted);font-size:.92rem}
body.embed-body{background:#fff}
.embed-wrap{max-width:720px;margin:0 auto;padding:16px 14px 10px}
.embed-h1{font-size:1.35rem;margin:2px 0 14px;color:var(--ink);font-family:var(--serif);font-weight:600}
.embed-wrap .tool-app{box-shadow:none}
.embed-wrap .embed-credit{text-align:center;margin:14px 0 6px}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:#C9CDF2;margin-top:26px}
.footer-in{max-width:1180px;margin:0 auto;padding:30px 18px;display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:26px}
.site-footer a{color:#FFFFFF}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.1rem}
.footer-brand img{width:34px;height:34px}
.site-footer h4{color:#fff;margin:0 0 10px;font-size:1rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:7px;font-size:.95rem}
.footer-note{border-top:1px solid rgba(255,255,255,.14);padding:14px 18px;text-align:center;font-size:.87rem;color:#9AA3C7;max-width:1180px;margin:0 auto}

/* ---------- mobile ---------- */
@media (max-width:720px){
  body{font-size:16px}
  .hero{padding:32px 20px 28px}
  .hero h1{font-size:1.7rem}
  main h1{font-size:1.55rem}
  .tool-app{padding:18px 16px}
  .footer-in{grid-template-columns:1fr}
  .main-nav{margin-left:0}
  .header-in{gap:10px}
}