/* ===========================================================
   JPG2TEXT — design tokens
   Concept: 종이(스캔 대상) → 스캔 빔 → 디지털 텍스트(모노스페이스)
   =========================================================== */
:root{
  --ink:#1c1b1a;
  --ink-soft:#726b5e;
  --paper:#f3efe6;
  --paper-deep:#e8e1d0;
  --paper-card:#faf8f2;
  --rule:#d8cfb6;
  --scan:#2f6f5e;
  --scan-bright:#4f9b7c;
  --scan-glow:#9ed6bb;
  --danger:#a8452f;
  --radius:14px;
  --serif:'Noto Serif KR', serif;
  --sans:'Pretendard', -apple-system, BlinkMacSystemFont, 'Malgun Gothic', sans-serif;
  --mono:'JetBrains Mono', ui-monospace, 'D2Coding', Consolas, monospace;
  --max:1080px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{ color:inherit; }
img{ max-width:100%; display:block; }
:focus-visible{ outline:3px solid var(--scan); outline-offset:3px; }

.wrap{ max-width:var(--max); margin:0 auto; padding:0 24px; }

/* ---------- nav ---------- */
.site-nav{
  position:sticky; top:0; z-index:40;
  background:rgba(243,239,230,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--rule);
}
.site-nav .wrap{ display:flex; align-items:center; justify-content:space-between; height:64px; }
.logo{
  display:flex; align-items:center; gap:8px;
  font-family:var(--serif); font-weight:700; font-size:19px; letter-spacing:.01em;
  text-decoration:none; color:var(--ink);
}
.logo .bracket{ color:var(--scan); font-family:var(--mono); font-weight:500; }
.nav-links{ display:flex; gap:28px; list-style:none; margin:0; padding:0; }
.nav-links a{ text-decoration:none; font-size:14.5px; color:var(--ink-soft); border-bottom:2px solid transparent; padding-bottom:3px; transition:color .15s, border-color .15s; }
.nav-links a:hover{ color:var(--ink); border-color:var(--scan); }
.nav-toggle{ display:none; }

@media (max-width:720px){
  .nav-links{ position:absolute; top:64px; left:0; right:0; background:var(--paper); flex-direction:column; gap:0; border-bottom:1px solid var(--rule); display:none; }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:14px 24px; width:100%; border-bottom:1px solid var(--rule); }
  .nav-toggle{ display:block; background:none; border:1px solid var(--rule); border-radius:8px; padding:8px 10px; font-family:var(--mono); font-size:13px; }
}

/* ---------- hero ---------- */
.hero{
  padding:72px 0 40px;
  background-image:repeating-linear-gradient(to bottom, transparent 0 30px, rgba(216,207,182,.5) 30px 31px);
  background-position:0 90px;
}
.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:var(--mono); font-size:12.5px; letter-spacing:.06em;
  color:var(--scan); background:var(--paper-card); border:1px solid var(--rule);
  padding:6px 12px; border-radius:999px; margin-bottom:22px;
}
.eyebrow::before{ content:''; width:6px; height:6px; border-radius:50%; background:var(--scan); box-shadow:0 0 0 3px var(--scan-glow); }
h1.display{
  font-family:var(--serif); font-weight:700;
  font-size:clamp(34px, 5.2vw, 56px);
  line-height:1.18; letter-spacing:-.01em; margin:0 0 20px;
  max-width:16ch;
}
.lede{ font-size:17px; color:var(--ink-soft); max-width:52ch; margin:0 0 8px; }

/* ---------- tool ---------- */
.tool{
  margin-top:44px;
  display:grid; grid-template-columns:1fr 1fr; gap:20px;
}
@media (max-width:860px){ .tool{ grid-template-columns:1fr; } }

.panel{
  background:var(--paper-card);
  border:1px solid var(--rule);
  border-radius:var(--radius);
  overflow:hidden;
}
.panel-head{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 18px; border-bottom:1px solid var(--rule);
  font-family:var(--mono); font-size:12.5px; color:var(--ink-soft); letter-spacing:.03em;
}

/* dropzone */
.dropzone{
  position:relative;
  margin:18px; height:300px;
  border:1.5px dashed var(--rule);
  border-radius:10px;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:14px;
  text-align:center; padding:24px;
  transition:border-color .15s, background .15s;
  cursor:pointer;
  background:repeating-linear-gradient(45deg, transparent 0 10px, rgba(216,207,182,.25) 10px 11px);
}
.dropzone.drag{ border-color:var(--scan); background-color:rgba(79,155,124,.08); }
.dropzone .corner{ position:absolute; width:18px; height:18px; border:2px solid var(--scan); opacity:.55; }
.dropzone .corner.tl{ top:8px; left:8px; border-right:none; border-bottom:none; }
.dropzone .corner.tr{ top:8px; right:8px; border-left:none; border-bottom:none; }
.dropzone .corner.bl{ bottom:8px; left:8px; border-right:none; border-top:none; }
.dropzone .corner.br{ bottom:8px; right:8px; border-left:none; border-top:none; }
.dz-hint{ font-size:15px; color:var(--ink-soft); }
.dz-sub{ font-size:12.5px; color:var(--ink-soft); font-family:var(--mono); }
.btn{
  font-family:var(--sans); font-weight:600; font-size:14.5px;
  border-radius:8px; border:1px solid var(--ink); padding:10px 18px;
  background:var(--ink); color:var(--paper); cursor:pointer;
  transition:transform .1s ease, background .15s;
}
.btn:hover{ background:#000; }
.btn:active{ transform:scale(.97); }
.btn.ghost{ background:transparent; color:var(--ink); }
.btn.ghost:hover{ background:var(--paper-deep); }
.btn:disabled{ opacity:.45; cursor:not-allowed; }
input[type=file]{ display:none; }

.preview-wrap{ position:relative; margin:0 18px 18px; border-radius:8px; overflow:hidden; display:none; border:1px solid var(--rule); }
.preview-wrap img{ width:100%; display:block; }
.scan-beam{
  position:absolute; left:0; right:0; height:3px;
  background:linear-gradient(90deg, transparent, var(--scan-bright), transparent);
  box-shadow:0 0 12px 2px var(--scan-glow);
  top:0; display:none;
}
.scan-beam.active{ display:block; animation:sweep 1.6s linear infinite; }
@keyframes sweep{ 0%{ top:0; } 100%{ top:100%; } }

.controls{ display:flex; align-items:center; gap:10px; padding:0 18px 18px; flex-wrap:wrap; }
select{
  font-family:var(--mono); font-size:13px; padding:9px 10px;
  border:1px solid var(--rule); border-radius:8px; background:var(--paper);
}

/* output receipt panel */
.receipt{
  margin:18px; min-height:300px; max-height:420px; overflow:auto;
  background:var(--ink); color:var(--scan-glow);
  border-radius:10px; padding:20px;
  font-family:var(--mono); font-size:13.5px; line-height:1.7; white-space:pre-wrap; word-break:break-word;
}
.receipt .placeholder{ color:#8a8578; }
.receipt .caret{ display:inline-block; width:8px; height:14px; background:var(--scan-glow); animation:blink 1s step-end infinite; vertical-align:-2px; }
@keyframes blink{ 50%{ opacity:0; } }
.output-actions{ display:flex; gap:10px; padding:0 18px 18px; }
.status-line{ padding:0 18px 10px; font-family:var(--mono); font-size:12.5px; color:var(--ink-soft); min-height:18px; }

/* ---------- steps ---------- */
.section{ padding:64px 0; }
.section h2{ font-family:var(--serif); font-size:clamp(24px,3vw,32px); margin:0 0 8px; }
.section .kicker{ font-family:var(--mono); font-size:12.5px; color:var(--scan); letter-spacing:.06em; margin-bottom:10px; display:block; }
.section .lede{ margin-bottom:36px; }

.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
@media (max-width:760px){ .steps{ grid-template-columns:1fr; } }
.step{ border-top:2px solid var(--ink); padding-top:14px; }
.step .num{ font-family:var(--mono); color:var(--scan); font-size:13px; }
.step h3{ font-family:var(--sans); font-size:17px; margin:8px 0 6px; }
.step p{ color:var(--ink-soft); font-size:14.5px; margin:0; }

/* ---------- feature cards ---------- */
.cards{ display:grid; grid-template-columns:repeat(3,1fr); gap:18px; }
@media (max-width:760px){ .cards{ grid-template-columns:1fr; } }
.card{ background:var(--paper-card); border:1px solid var(--rule); border-radius:var(--radius); padding:22px; }
.card h3{ font-size:16px; margin:0 0 8px; }
.card p{ color:var(--ink-soft); font-size:14.5px; margin:0; }

/* ---------- faq ---------- */
.faq-item{ border-bottom:1px solid var(--rule); padding:18px 0; }
.faq-item summary{ cursor:pointer; font-weight:600; font-size:15.5px; list-style:none; display:flex; justify-content:space-between; align-items:center; }
.faq-item summary::-webkit-details-marker{ display:none; }
.faq-item summary::after{ content:'+'; font-family:var(--mono); color:var(--scan); font-size:18px; }
.faq-item[open] summary::after{ content:'–'; }
.faq-item p{ margin:12px 0 0; color:var(--ink-soft); font-size:14.5px; }

/* ---------- footer ---------- */
footer{ border-top:1px solid var(--rule); padding:32px 0; margin-top:20px; }
footer .wrap{ display:flex; flex-wrap:wrap; gap:18px; align-items:center; justify-content:space-between; }
footer nav{ display:flex; gap:18px; flex-wrap:wrap; }
footer nav a{ text-decoration:none; font-size:13.5px; color:var(--ink-soft); }
footer nav a:hover{ color:var(--ink); }
footer .copy{ font-family:var(--mono); font-size:12px; color:var(--ink-soft); }

/* ---------- guide index ---------- */
.guide-cat{ margin-bottom:48px; }
.guide-cat > h2{ font-family:var(--serif); font-size:20px; margin:0 0 4px; }
.guide-cat > p{ color:var(--ink-soft); font-size:14px; margin:0 0 18px; }
.guide-grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:14px; }
@media (max-width:700px){ .guide-grid{ grid-template-columns:1fr; } }
.guide-card{
  display:block; text-decoration:none; color:var(--ink);
  background:var(--paper-card); border:1px solid var(--rule); border-radius:10px;
  padding:18px 20px; transition:border-color .15s, transform .1s;
}
.guide-card:hover{ border-color:var(--scan); transform:translateY(-1px); }
.guide-card .gnum{ font-family:var(--mono); font-size:12px; color:var(--scan); }
.guide-card h3{ font-size:15.5px; margin:6px 0 0; line-height:1.4; }

/* ---------- article page ---------- */
.breadcrumb{ font-family:var(--mono); font-size:12.5px; color:var(--ink-soft); margin-bottom:10px; }
.breadcrumb a{ color:var(--ink-soft); text-decoration:none; }
.breadcrumb a:hover{ color:var(--scan); }
.article-tag{
  display:inline-block; font-family:var(--mono); font-size:11.5px; letter-spacing:.04em;
  color:var(--scan); background:var(--paper-card); border:1px solid var(--rule);
  padding:4px 10px; border-radius:999px; margin-bottom:14px;
}
.article-cta{
  margin-top:40px; padding:26px; background:var(--paper-deep);
  border-radius:var(--radius); text-align:left;
}
.article-cta p{ margin:0 0 12px; color:var(--ink); font-size:15px; }
.article-cta a.btn{ text-decoration:none; display:inline-block; }
.next-guide{ margin-top:28px; font-size:14.5px; }
.next-guide a{ color:var(--scan); text-decoration:none; font-weight:600; }

/* ---------- simple content pages (about/contact/privacy) ---------- */
.page-header{ padding:60px 0 20px; border-bottom:1px solid var(--rule); }
.page-header .kicker{ font-family:var(--mono); font-size:12.5px; color:var(--scan); letter-spacing:.06em; }
.page-header h1{ font-family:var(--serif); font-size:clamp(28px,4vw,40px); margin:10px 0 0; }
.prose{ padding:44px 0; max-width:68ch; }
.prose h2{ font-family:var(--serif); font-size:22px; margin-top:36px; }
.prose p, .prose li{ color:var(--ink-soft); font-size:15.5px; }
.prose a{ color:var(--scan); }
.contact-box{ background:var(--paper-card); border:1px solid var(--rule); border-radius:var(--radius); padding:26px; margin-top:20px; }
.contact-box a.btn{ text-decoration:none; display:inline-block; margin-top:10px; }