/* SwiftPDF — Apple-minimal, mobile-first */
:root{
  --accent:#0d9488; --accent-dark:#0b7f76; --accent-soft:#e6f7f5;
  --ink:#111827; --muted:#6b7280; --line:#e5e7eb;
  --bg:#ffffff; --bg-soft:#f7f9f8;
  --radius:20px; --radius-sm:14px;
  --shadow:0 8px 28px rgba(17,24,39,.07);
  --font:-apple-system,BlinkMacSystemFont,"Inter","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img,canvas,svg{max-width:100%}
a{color:var(--accent-dark);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--ink);letter-spacing:-.02em}
.brand:hover{text-decoration:none}
.brand-mark{width:32px;height:32px;border-radius:9px;background:var(--accent);color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:17px;font-weight:800}
.main-nav ul{display:flex;gap:4px;list-style:none}
.main-nav a{color:var(--ink);font-weight:600;font-size:15px;padding:8px 12px;border-radius:10px}
.main-nav a:hover{background:var(--bg-soft);text-decoration:none;color:var(--accent-dark)}
/* hero */
.hero{padding:64px 0 48px;text-align:center;background:linear-gradient(180deg,var(--accent-soft),#fff 75%)}
.hero h1{font-size:clamp(30px,5vw,52px);font-weight:800;letter-spacing:-.03em;line-height:1.12;max-width:760px;margin:0 auto 16px}
.hero .lede{font-size:clamp(16px,2.4vw,20px);color:var(--muted);max-width:640px;margin:0 auto 28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:8px}
.badge{background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;font-size:14px;font-weight:600;color:var(--ink);box-shadow:var(--shadow)}
.badge .dot{color:var(--accent);margin-right:6px}
/* sections */
.section{padding:48px 0}
.section h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:-.02em;text-align:center;margin-bottom:10px}
.section .sub{color:var(--muted);text-align:center;max-width:640px;margin:0 auto 32px}
/* tool cards */
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px}
.tool-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);transition:transform .15s ease,box-shadow .15s ease;display:flex;flex-direction:column;gap:10px}
.tool-card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(17,24,39,.1);text-decoration:none}
.tool-card .icon{width:46px;height:46px;border-radius:14px;background:var(--accent-soft);display:flex;align-items:center;justify-content:center;font-size:22px}
.tool-card h3{font-size:18px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
.tool-card p{font-size:14.5px;color:var(--muted);flex:1}
.tool-card .go{font-weight:700;color:var(--accent-dark);font-size:15px}
/* comparison */
.compare{width:100%;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);font-size:15px}
.compare th,.compare td{padding:14px 18px;text-align:left;border-bottom:1px solid var(--line)}
.compare tr:last-child th,.compare tr:last-child td{border-bottom:none}
.compare thead th{background:var(--bg-soft);font-weight:700}
.compare thead th.us{background:var(--accent);color:#fff}
.compare td.us{font-weight:700;color:var(--accent-dark)}
.compare-wrap{overflow-x:auto;border-radius:var(--radius)}
/* features strip */
.feat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}
.feat{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;text-align:center}
.feat .icon{font-size:30px;margin-bottom:10px}
.feat h3{font-size:17px;margin-bottom:6px}
.feat p{font-size:14.5px;color:var(--muted)}
/* faq */
.faq{max-width:760px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px 20px;box-shadow:var(--shadow)}
.faq summary{font-weight:700;cursor:pointer;font-size:16px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--accent);font-size:20px;font-weight:800}
.faq details[open] summary::after{content:"\2212"}
.faq details p{margin-top:10px;color:var(--muted);font-size:15px}
/* tool page layout */
.tool-hero{padding:44px 0 8px;text-align:center}
.tool-hero h1{font-size:clamp(26px,4.4vw,40px);font-weight:800;letter-spacing:-.02em;margin-bottom:10px}
.tool-hero .lede{color:var(--muted);max-width:620px;margin:0 auto 6px}
.crumb{display:inline-block;margin-bottom:14px;font-size:14px;font-weight:600}
.workspace{max-width:860px;margin:0 auto;padding:24px 0 56px}
/* dropzone */
.dropzone{border:2px dashed #c7d2d1;border-radius:var(--radius);background:var(--bg-soft);padding:44px 24px;text-align:center;cursor:pointer;transition:all .15s ease;margin:20px 0}
.dropzone:hover,.dropzone.dragover{border-color:var(--accent);background:var(--accent-soft)}
.dropzone .dz-icon{font-size:40px;margin-bottom:10px}
.dropzone p{font-weight:600}
.dropzone .hint{font-size:13.5px;color:var(--muted);font-weight:400;margin-top:6px}
input[type=file]{display:none}
/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#fff;border:none;border-radius:14px;padding:13px 26px;font-size:16px;font-weight:700;cursor:pointer;font-family:var(--font);transition:background .15s ease;min-height:48px}
.btn:hover{background:var(--accent-dark)}
.btn:disabled{background:#9dbfbb;cursor:not-allowed}
.btn-secondary{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
.btn-secondary:hover{background:var(--bg-soft)}
.btn-danger{background:#fff;color:#b91c1c;border:1.5px solid #fecaca}
.btn-danger:hover{background:#fef2f2}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0}
/* file list */
.file-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin:16px 0}
.file-item{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px;box-shadow:var(--shadow)}
.file-item.dragging{opacity:.4}
.file-item .fname{flex:1;font-weight:600;font-size:14.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.file-item .fsize{color:var(--muted);font-size:13px;white-space:nowrap}
.icon-btn{border:1px solid var(--line);background:#fff;border-radius:10px;width:36px;height:36px;cursor:pointer;font-size:15px;display:inline-flex;align-items:center;justify-content:center;flex:none}
.icon-btn:hover{background:var(--bg-soft)}
/* progress + messages */
.progress{height:10px;background:var(--bg-soft);border:1px solid var(--line);border-radius:999px;overflow:hidden;margin:16px 0;display:none}
.progress.show{display:block}
.progress>div{height:100%;width:0;background:var(--accent);border-radius:999px;transition:width .2s ease}
.msg{border-radius:var(--radius-sm);padding:13px 16px;font-size:14.5px;margin:14px 0;display:none}
.msg.show{display:block}
.msg.info{background:#eff6ff;border:1px solid #bfdbfe;color:#1e40af}
.msg.error{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}
.msg.success{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}
/* controls */
.controls{background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin:20px 0;display:flex;flex-direction:column;gap:16px}
.control-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.control-row label{font-weight:600;font-size:14.5px}
select,input[type=text],input[type=number],textarea{font-family:var(--font);font-size:15px;padding:11px 14px;border:1.5px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);max-width:100%}
select:focus,input:focus,textarea:focus{outline:2px solid var(--accent);border-color:var(--accent)}
input[type=range]{accent-color:var(--accent)}
textarea{width:100%;min-height:120px;resize:vertical}
.checkbox-row{display:flex;align-items:center;gap:10px;font-size:15px}
/* thumbnails */
.thumb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px;margin:18px 0}
.thumb{position:relative;background:#fff;border:2px solid var(--line);border-radius:var(--radius-sm);padding:8px;cursor:grab;box-shadow:var(--shadow)}
.thumb.dragging{opacity:.4}
.thumb.selected{border-color:var(--accent)}
.thumb canvas{width:100%;height:auto;display:block;border-radius:8px;background:#fff}
.thumb .pageno{text-align:center;font-size:12.5px;color:var(--muted);font-weight:600;margin-top:6px}
.thumb .thumb-btns{position:absolute;top:2px;right:2px;display:flex;gap:4px}
.thumb .thumb-btns button{width:28px;height:28px;font-size:13px;border-radius:8px;border:1px solid var(--line);background:rgba(255,255,255,.95);cursor:pointer}
/* signature */
.sig-pad{border:2px solid var(--line);border-radius:var(--radius-sm);background:#fff;touch-action:none;cursor:crosshair;width:100%;height:200px;display:block}
.preview-wrap{position:relative;display:inline-block;max-width:100%;border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;box-shadow:var(--shadow);background:#fff}
.preview-wrap canvas{display:block;max-width:100%;height:auto}
.sig-overlay{position:absolute;cursor:move;touch-action:none;border:2px dashed var(--accent);border-radius:6px;background:rgba(13,148,136,.06)}
.sig-overlay img{display:block;width:100%;height:100%;pointer-events:none}
/* results */
.result-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin:16px 0}
.result-list li{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:12px 14px}
/* prose */
.prose{max-width:760px;margin:0 auto;padding:32px 0 56px}
.prose h1{font-size:clamp(28px,4.5vw,40px);font-weight:800;letter-spacing:-.02em;margin-bottom:18px}
.prose h2{font-size:22px;margin:30px 0 12px;letter-spacing:-.01em}
.prose p{margin-bottom:14px;color:#374151}
.prose ul{margin:0 0 16px 22px;color:#374151}
.prose li{margin-bottom:8px}
/* forms */
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);max-width:640px;margin:24px auto}
.form-card label{display:block;font-weight:600;margin:14px 0 6px}
.form-card input,.form-card textarea{width:100%}
.notice{background:#fffbeb;border:1px solid #fde68a;color:#92400e;border-radius:var(--radius-sm);padding:13px 16px;font-size:14.5px;margin:16px 0}
/* footer */
.site-footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:44px 0 28px;margin-top:24px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:28px;margin-bottom:28px}
.footer-grid h3{font-size:15px;margin-bottom:12px}
.footer-grid ul{list-style:none}
.footer-grid li{margin-bottom:8px}
.footer-grid a{color:var(--muted);font-size:14.5px}
.footer-grid a:hover{color:var(--accent-dark)}
.footer-bottom{border-top:1px solid var(--line);padding-top:20px;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;color:var(--muted);font-size:13.5px}
.cta-band{background:var(--accent);color:#fff;border-radius:var(--radius);padding:44px 28px;text-align:center;margin:40px 0}
.cta-band h2{color:#fff;margin-bottom:10px}
.cta-band p{opacity:.92;max-width:560px;margin:0 auto 22px}
.cta-band .btn{background:#fff;color:var(--accent-dark)}
.cta-band .btn:hover{background:#f0fdfa}
@media(max-width:640px){
  .main-nav a{padding:8px 8px;font-size:14px}
  .hero{padding:48px 0 36px}
  .section{padding:36px 0}
  .btn{width:100%}
  .btn-row .btn{width:auto;flex:1}
  .control-row{flex-direction:column;align-items:stretch}
}