/* ============================================================
   PDFNEST — design tokens
   Concept: a well-organized desk of paper — folded corners,
   stacked-document shadows, official-document trustworthiness
   Type: Source Serif 4 (headings, "official document" feel) / Inter (body/UI)
   ============================================================ */
:root{
  --paper:#FAF6EF;
  --paper-card:#FFFFFF;
  --paper-line:#E8E0D2;
  --ink:#1B2A4A;
  --ink-soft:#4A5A7A;
  --ink-faint:#8B94AC;

  --gold:#C89B3C;
  --gold-bright:#E0B354;
  --gold-glow:#C89B3C33;
  --coral:#D96C4F;
  --forest:#2F6B4F;

  --radius-s:6px;
  --radius-m:12px;
  --radius-l:18px;

  --font-serif:'Source Serif 4', Georgia, serif;
  --font-body:'Inter', sans-serif;
  --font-mono:'JetBrains Mono', monospace;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--font-body);font-size:16px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{max-width:1120px;margin:0 auto;padding:0 24px;}
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:600;line-height:1.15;margin:0 0 .5em;color:var(--ink);}
h1{font-size:clamp(32px,5vw,52px);}
h2{font-size:clamp(22px,3vw,30px);}
h3{font-size:19px;}
p{margin:0 0 1em;color:var(--ink-soft);}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;}
.mono{font-family:var(--font-mono);}

/* ---------- signature: folded-corner document card ---------- */
.doc-card{
  position:relative;background:var(--paper-card);border:1px solid var(--paper-line);
  border-radius:var(--radius-m);box-shadow:0 2px 0 var(--paper-line), 0 8px 20px -12px #1b2a4a22;
}
.doc-card::after{
  content:'';position:absolute;top:0;right:0;width:22px;height:22px;
  background:linear-gradient(135deg, transparent 50%, var(--paper) 50%);
  border-bottom-left-radius:4px;box-shadow:-1px 1px 2px #1b2a4a1a;
}
.doc-stack{position:relative;}
.doc-stack::before, .doc-stack::after{
  content:'';position:absolute;inset:0;background:var(--paper-card);border:1px solid var(--paper-line);border-radius:var(--radius-m);
}
.doc-stack::before{transform:rotate(-3deg);z-index:-1;}
.doc-stack::after{transform:rotate(2deg);z-index:-2;}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#FAF6EFEE;backdrop-filter:blur(8px);border-bottom:1px solid var(--paper-line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;gap:20px;}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-weight:600;font-size:22px;}
.logo-mark{width:32px;height:32px;}
.main-nav{display:flex;gap:26px;font-weight:600;font-size:14.5px;}
.main-nav a{padding:6px 2px;border-bottom:2px solid transparent;color:var(--ink-soft);}
.main-nav a:hover{color:var(--ink);border-color:var(--gold);}
.header-actions{display:flex;align-items:center;gap:10px;}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:var(--radius-s);
  font-weight:600;font-size:14.5px;border:1.5px solid transparent;cursor:pointer;transition:all .15s ease;
  font-family:var(--font-body);
}
.btn-gold{background:var(--gold);color:#2A1E05;}
.btn-gold:hover{background:var(--gold-bright);box-shadow:0 4px 14px var(--gold-glow);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--paper-line);}
.btn-ghost:hover{border-color:var(--gold);}
.nav-toggle{display:none;background:none;border:1.5px solid var(--paper-line);border-radius:var(--radius-s);width:40px;height:40px;cursor:pointer;}
@media (max-width:860px){
  .main-nav{position:fixed;top:66px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--paper-line);
    flex-direction:column;padding:16px 24px;gap:4px;transform:translateY(-120%);transition:transform .2s ease;z-index:40;}
  .main-nav.open{transform:translateY(0);}
  .main-nav a{padding:12px 4px;border-bottom:1px solid var(--paper-line);width:100%;}
  .nav-toggle{display:block;}
}

/* ---------- hero ---------- */
.hero{padding:56px 0 40px;}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase;color:var(--forest);border:1px solid #2f6b4f44;
  padding:6px 14px;border-radius:999px;margin-bottom:20px;background:#2f6b4f0d;}
.hero .lead{font-size:18px;max-width:56ch;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px;}
.trust-strip{display:flex;gap:32px;flex-wrap:wrap;margin-top:40px;font-size:13.5px;color:var(--ink-faint);}
.trust-strip span{display:flex;align-items:center;gap:8px;}

/* ---------- tool grid ---------- */
.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
@media (max-width:860px){.tool-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.tool-grid{grid-template-columns:1fr;}}
.tool-card{padding:26px;transition:all .15s ease;}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 4px 0 var(--paper-line), 0 16px 30px -16px #1b2a4a33;}
.tool-card .icn{font-size:30px;margin-bottom:14px;}
.tool-card h3{font-size:17px;margin-bottom:6px;}
.tool-card p{font-size:14px;margin-bottom:0;}

/* ---------- tool page ---------- */
.tool-page-head{max-width:70ch;}
.upload-zone{
  border:2px dashed var(--paper-line);border-radius:var(--radius-l);padding:56px 24px;text-align:center;
  background:var(--paper-card);cursor:pointer;transition:all .15s ease;
}
.upload-zone:hover, .upload-zone.dragover{border-color:var(--gold);background:#C89B3C0a;}
.upload-zone .icn{font-size:40px;margin-bottom:14px;}
.upload-zone input[type="file"]{display:none;}
.file-list{margin-top:20px;display:flex;flex-direction:column;gap:10px;}
.file-item{
  display:flex;align-items:center;gap:14px;padding:14px 18px;background:var(--paper-card);
  border:1px solid var(--paper-line);border-radius:var(--radius-s);
}
.file-item .name{flex:1;font-size:14px;font-weight:600;}
.file-item .size{font-family:var(--font-mono);font-size:12px;color:var(--ink-faint);}
.file-item .remove{cursor:pointer;color:var(--coral);font-weight:700;background:none;border:none;font-size:16px;}
.file-item .drag-handle{cursor:grab;color:var(--ink-faint);}

.progress-panel{text-align:center;padding:48px 24px;}
.progress-bar-track{width:100%;max-width:320px;margin:20px auto;height:8px;background:var(--paper-line);border-radius:999px;overflow:hidden;}
.progress-bar-fill{height:100%;background:var(--gold);border-radius:999px;transition:width .2s ease;width:0%;}

.result-panel{text-align:center;padding:48px 24px;}
.result-panel .icn{font-size:48px;margin-bottom:16px;}

.field{margin-bottom:18px;}
.field label{display:block;font-size:13.5px;font-weight:700;margin-bottom:7px;color:var(--ink-soft);}
.field select, .field input[type="text"]{
  width:100%;padding:11px 14px;border-radius:var(--radius-s);border:1.5px solid var(--paper-line);
  font-size:14.5px;background:var(--paper-card);color:var(--ink);font-family:var(--font-body);
}

.privacy-note{
  display:flex;gap:12px;align-items:flex-start;padding:16px 18px;background:#2f6b4f0d;
  border:1px solid #2f6b4f33;border-radius:var(--radius-s);font-size:13.5px;color:var(--forest);margin-top:24px;
}

.ad-slot{border:1px dashed var(--paper-line);border-radius:var(--radius-m);padding:24px;text-align:center;
  color:var(--ink-faint);font-family:var(--font-mono);font-size:12px;margin:32px 0;}

.side-ad-rail{
  position:fixed;top:110px;width:160px;height:600px;display:none;
  border:1px dashed var(--paper-line);border-radius:var(--radius-m);background:var(--paper-card);
  align-items:center;justify-content:center;text-align:center;padding:16px;
  color:var(--ink-faint);font-family:var(--font-mono);font-size:10.5px;line-height:1.5;z-index:10;
}
.side-ad-rail.left{left:24px;}
.side-ad-rail.right{right:24px;}
@media (min-width:1500px){.side-ad-rail{display:flex;}}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--paper-line);margin-top:64px;padding:44px 0 26px;}
.footer-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px;margin-bottom:32px;}
@media (max-width:800px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
.footer-grid h4{font-family:var(--font-mono);font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--ink-faint);margin-bottom:14px;}
.footer-grid a{display:block;font-size:14px;padding:5px 0;color:var(--ink-soft);}
.footer-grid a:hover{color:var(--gold);}
.footer-bottom{border-top:1px solid var(--paper-line);padding-top:20px;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;font-size:12px;color:var(--ink-faint);}

.breadcrumb{padding:16px 0;font-size:13px;color:var(--ink-faint);}
.breadcrumb a{font-weight:600;color:var(--ink-soft);}
.legal-page{max-width:74ch;padding-bottom:60px;}
.legal-page h2{margin-top:32px;font-size:20px;}
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease, transform .5s ease;}
.reveal.in{opacity:1;transform:none;}