/* UnirPDF — design system v1.0 */
:root{
  --navy:#1b2148; --navy-2:#252c5e; --ink:#23263b;
  --red:#f43f5e; --red-dark:#d92d4c; --red-soft:#ffe9ed;
  --bg:#f6f7fb; --card:#ffffff; --line:#e6e8f2;
  --muted:#5b6079; --muted-2:#8a8fa8;
  --green:#16a34a; --green-soft:#e5f7ec;
  --radius:18px; --radius-s:12px;
  --shadow:0 10px 30px rgba(27,33,72,.10);
  --shadow-lg:0 24px 60px rgba(27,33,72,.16);
  --font:"Plus Jakarta Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--red);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1120px;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)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.35rem;color:var(--navy);text-decoration:none}
.logo:hover{text-decoration:none}
.logo-mark{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--red),var(--red-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:.8rem;letter-spacing:.5px;box-shadow:0 6px 14px rgba(244,63,94,.35)}
.main-nav{display:flex;gap:26px}
.main-nav a{color:var(--ink);font-weight:600;font-size:.95rem}
.main-nav a:hover{color:var(--red);text-decoration:none}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;cursor:pointer;font-family:var(--font);font-weight:700;border-radius:999px;padding:13px 28px;font-size:1rem;transition:transform .15s ease,box-shadow .15s ease,background .15s ease}
.btn-primary{background:linear-gradient(135deg,var(--red),var(--red-dark));color:#fff;box-shadow:0 10px 22px rgba(244,63,94,.35)}
.btn-primary:hover{background:linear-gradient(135deg,var(--red-dark),#b81f3c);transform:translateY(-2px);box-shadow:0 14px 28px rgba(244,63,94,.42)}
.btn-primary:disabled{opacity:.55;cursor:not-allowed;transform:none}
.btn-ghost{background:#fff;color:var(--navy);border:1.5px solid var(--line)}
.btn-ghost:hover{border-color:var(--red);color:var(--red)}
.btn-sm{padding:9px 18px;font-size:.88rem}

/* ---------- hero ---------- */
.hero{background:radial-gradient(1100px 480px at 50% -120px,#e8ebff 0%,var(--bg) 60%);padding:56px 0 30px;text-align:center}
.hero h1{font-size:clamp(2rem,5vw,3.2rem);line-height:1.15;color:var(--navy);font-weight:800;letter-spacing:-.5px;margin-bottom:14px}
.hero h1 .hl{color:var(--red)}
.hero .lede{font-size:clamp(1rem,2.4vw,1.2rem);color:var(--muted);max-width:680px;margin:0 auto 30px}
.trust-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px}
.trust-pill{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 16px;font-size:.85rem;font-weight:600;color:var(--navy);display:flex;align-items:center;gap:8px;box-shadow:var(--shadow)}
.trust-pill .dot{width:9px;height:9px;border-radius:50%;background:var(--green)}

/* ---------- tool card ---------- */
.tool-card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:30px;margin:10px auto 0;max-width:860px;border:1px solid var(--line);text-align:left}
.dropzone{border:2.5px dashed #c9cede;border-radius:var(--radius-s);padding:46px 20px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;background:#fbfbfe}
.dropzone:hover,.dropzone.drag{border-color:var(--red);background:var(--red-soft)}
.dropzone .dz-icon{font-size:2.6rem;margin-bottom:10px}
.dropzone h3{color:var(--navy);font-size:1.25rem;margin-bottom:6px}
.dropzone p{color:var(--muted);font-size:.92rem}
.dropzone input{display:none}
.file-list{list-style:none;margin:22px 0 6px;display:flex;flex-direction:column;gap:10px}
.file-row{display:flex;align-items:center;gap:12px;background:#fbfbfe;border:1px solid var(--line);border-radius:var(--radius-s);padding:10px 12px;transition:box-shadow .15s,opacity .2s}
.file-row.dragging{opacity:.45}
.file-row .grip{cursor:grab;color:var(--muted-2);font-size:1.1rem;user-select:none}
.file-row .fnum{width:30px;height:30px;flex:0 0 30px;border-radius:9px;background:var(--navy);color:#fff;font-weight:800;font-size:.85rem;display:flex;align-items:center;justify-content:center}
.file-row .fmeta{flex:1;min-width:0}
.file-row .fname{font-weight:700;font-size:.93rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.file-row .fsub{font-size:.8rem;color:var(--muted)}
.icon-btn{border:1px solid var(--line);background:#fff;border-radius:9px;width:34px;height:34px;cursor:pointer;font-size:1rem;color:var(--navy);display:flex;align-items:center;justify-content:center;transition:border-color .15s,color .15s}
.icon-btn:hover{border-color:var(--red);color:var(--red)}
.icon-btn.danger:hover{border-color:var(--red);background:var(--red-soft)}
.tool-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
.progress{height:10px;background:#eef0f7;border-radius:999px;overflow:hidden;margin-top:16px;display:none}
.progress.show{display:block}
.progress .bar{height:100%;width:0;background:linear-gradient(90deg,var(--red),#ff7a59);border-radius:999px;transition:width .25s ease}
.tool-msg{margin-top:14px;font-size:.92rem;display:none;border-radius:10px;padding:12px 16px}
.tool-msg.show{display:block}
.tool-msg.ok{background:var(--green-soft);color:#14532d;border:1px solid #bfe8cd}
.tool-msg.err{background:#fdecec;color:#8f1d2c;border:1px solid #f5c2cb}
.privacy-note{margin-top:16px;font-size:.82rem;color:var(--muted-2);display:flex;gap:8px;align-items:flex-start}

/* ---------- content sections ---------- */
.section{padding:56px 0}
.section h2{font-size:clamp(1.5rem,3.4vw,2.1rem);color:var(--navy);font-weight:800;letter-spacing:-.3px;margin-bottom:16px}
.section h2.center,.center{text-align:center}
.section p{color:#3c4059;margin-bottom:14px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.card h3{color:var(--navy);font-size:1.08rem;margin-bottom:8px}
.card p{font-size:.94rem;color:var(--muted);margin:0}
.card .step-n{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--red),var(--red-dark));color:#fff;font-weight:800;font-size:1.2rem;display:flex;align-items:center;justify-content:center;margin-bottom:14px;box-shadow:0 8px 18px rgba(244,63,94,.3)}
.img-rounded{border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--line)}
.check-list{list-style:none;margin:6px 0 16px}
.check-list li{padding:9px 0 9px 34px;position:relative;color:#3c4059}
.check-list li::before{content:"✓";position:absolute;left:0;top:9px;width:24px;height:24px;border-radius:50%;background:var(--green-soft);color:var(--green);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:.8rem}

/* ---------- faq ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-s);margin-bottom:12px;overflow:hidden}
.faq-q{width:100%;background:none;border:0;text-align:left;font-family:var(--font);font-weight:700;font-size:1rem;color:var(--navy);padding:18px 20px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-q .chev{transition:transform .2s;color:var(--red);font-weight:800}
.faq-item.open .faq-q .chev{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a p{padding:0 20px 18px;color:var(--muted);font-size:.95rem;margin:0}

/* ---------- pages ---------- */
.page-hero{background:linear-gradient(135deg,var(--navy),var(--navy-2));color:#fff;padding:52px 0;text-align:center}
.page-hero h1{font-size:clamp(1.7rem,4vw,2.4rem);font-weight:800}
.page-hero p{color:#c6cbe8;margin-top:8px}
.prose{max-width:820px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px;box-shadow:var(--shadow)}
.prose h2{font-size:1.3rem;color:var(--navy);margin:26px 0 10px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:#3c4059;font-size:.98rem}
.prose ul{margin:0 0 14px 20px}
.contact-form{display:grid;gap:14px;margin-top:18px}
.contact-form label{font-weight:700;font-size:.9rem;color:var(--navy)}
.contact-form input,.contact-form textarea{font-family:var(--font);font-size:1rem;border:1.5px solid var(--line);border-radius:var(--radius-s);padding:12px 14px;width:100%}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--red)}

/* ---------- footer ---------- */
.site-footer{background:var(--navy);color:#c6cbe8;margin-top:40px}
.site-footer .wrap{padding-top:44px;padding-bottom:26px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:28px;margin-bottom:30px}
.foot-grid h4{color:#fff;font-size:.95rem;margin-bottom:14px}
.foot-grid a{color:#c6cbe8;font-size:.9rem;display:block;padding:5px 0}
.foot-grid a:hover{color:#fff}
.foot-brand p{font-size:.88rem;max-width:300px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;color:#8f96bd}

/* ---------- responsive ---------- */
@media(max-width:860px){
  .grid-2{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .tool-card{padding:20px}
  .dropzone{padding:34px 14px}
  .prose{padding:24px}
  .section{padding:40px 0}
}
@media(max-width:520px){
  .foot-grid{grid-template-columns:1fr}
  .tool-actions .btn{flex:1}
}
@media(max-width:380px){
  .logo{font-size:1.12rem}
  .logo-mark{width:32px;height:32px;font-size:.7rem}
}

/* Accessibility: visible keyboard focus */
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,.dropzone:focus-visible{outline:2.5px solid var(--red);outline-offset:2px}

/* Mobile nav toggle */
.menu-toggle{display:none;background:none;border:0;cursor:pointer;padding:10px;margin-left:auto}
.menu-toggle span{display:block;width:24px;height:2.5px;background:var(--navy);border-radius:2px;margin:5px 0;transition:transform .25s,opacity .25s}
.menu-toggle.active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.menu-toggle.active span:nth-child(2){opacity:0}
.menu-toggle.active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}
@media(max-width:760px){
  .menu-toggle{display:block}
  .site-header .wrap{position:relative}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 20px 16px;border-top:1px solid var(--line);box-shadow:0 16px 32px rgba(15,23,42,.14);z-index:60}
  .main-nav.open{display:flex}
  .main-nav a{padding:13px 4px;border-bottom:1px solid var(--line)}
  .main-nav a:last-child{border-bottom:0}
}