/* PermaQR — archival letterpress design system */

@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-weight: 600 700;
  font-display: swap;
  src: url('/fonts/fraunces-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --paper: #F6F3EC;
  --paper-deep: #EDE7D9;
  --card: #FDFCF8;
  --ink: #1C1A16;
  --ink-soft: #5C564B;
  --ink-faint: #8A8375;
  --line: #C9C2B2;
  --accent: #0F6B4F;
  --accent-deep: #0A4A37;
  --accent-wash: #E3EFE7;
  --warn: #A33B20;
  --warn-wash: #F6E7E0;
  --gold: #B98A2F;
  --shadow: 5px 5px 0 rgba(28, 26, 22, 0.9);
  --shadow-sm: 3px 3px 0 rgba(28, 26, 22, 0.9);
  --radius: 4px;
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, 'Cascadia Code', 'SF Mono', Menlo, Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16.5px;
  -webkit-font-smoothing: antialiased;
}

/* subtle paper grain */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
  background-image: radial-gradient(rgba(28,26,22,0.05) 1px, transparent 1px);
  background-size: 24px 24px;
}

main, header, footer { position: relative; z-index: 1; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.015em;
}

a { color: var(--accent); text-decoration-thickness: 1.5px; text-underline-offset: 3px; }
a:hover { color: var(--accent-deep); }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- header ---------- */
.site-header {
  border-bottom: 1.5px solid var(--ink);
  background: var(--paper);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 62px;
}
.wordmark {
  font-family: var(--font-display); font-weight: 700; font-size: 1.35rem;
  color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 9px;
}
.wordmark svg { display: block; }
.site-nav { display: flex; gap: 22px; align-items: center; }
.site-nav a { color: var(--ink); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.site-nav a:hover { color: var(--accent); }

/* ---------- hero ---------- */
.hero { padding: 52px 0 30px; }
.hero-grid { display: grid; grid-template-columns: 1fr auto; gap: 28px; align-items: center; }
.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); max-width: 14ch; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero p.sub {
  margin-top: 14px; font-size: 1.12rem; color: var(--ink-soft); max-width: 52ch;
}
.chips { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.chip {
  font-size: 0.82rem; font-weight: 600; letter-spacing: 0.02em;
  border: 1.5px solid var(--ink); border-radius: 100px;
  padding: 5px 13px; background: var(--card);
}
.chip.green { background: var(--accent-wash); }

/* rotating seal */
.seal { width: 148px; height: 148px; animation: spin 36s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .seal { animation: none; } }

/* ---------- tool ---------- */
.tool-card {
  background: var(--card);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin: 26px 0 60px;
  overflow: hidden;
}
.tool-grid { display: grid; grid-template-columns: 1.15fr 1fr; }
.tool-left { padding: 26px 28px 30px; border-right: 1.5px solid var(--ink); }
.tool-right { padding: 26px 28px 30px; background: var(--paper-deep); }

.tabs { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 22px; }
.tab {
  font: 600 0.88rem var(--font-body); cursor: pointer;
  border: 1.5px solid var(--ink); border-radius: 100px; background: var(--card);
  padding: 6px 15px; color: var(--ink); transition: background 0.12s;
}
.tab:hover { background: var(--paper-deep); }
.tab[aria-selected="true"] { background: var(--ink); color: var(--paper); }

.field { margin-bottom: 15px; }
.field label { display: block; font-size: 0.82rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 5px; }
.field input[type="text"], .field input[type="url"], .field input[type="email"], .field input[type="tel"], .field input[type="password"],
.field textarea, .field select {
  width: 100%; font: 400 1rem var(--font-body); color: var(--ink);
  background: var(--paper); border: 1.5px solid var(--ink); border-radius: var(--radius);
  padding: 10px 12px; outline: none;
}
.field textarea { min-height: 84px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-wash); }
.field .hint { font-size: 0.8rem; color: var(--ink-faint); margin-top: 4px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.options { border-top: 1.5px dashed var(--line); margin-top: 22px; padding-top: 18px; }
.options-title { font-size: 0.82rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 12px; }
.opt-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: end; }
.opt { display: flex; flex-direction: column; gap: 5px; }
.opt > span { font-size: 0.78rem; font-weight: 600; color: var(--ink-soft); }
.opt input[type="color"] {
  width: 52px; height: 36px; padding: 2px; border: 1.5px solid var(--ink);
  border-radius: var(--radius); background: var(--card); cursor: pointer;
}
.opt select {
  font: 500 0.9rem var(--font-body); padding: 7px 9px;
  border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--card);
}
.swap-btn {
  border: 1.5px solid var(--ink); background: var(--card); border-radius: var(--radius);
  width: 36px; height: 36px; cursor: pointer; font-size: 1rem; line-height: 1;
}
.swap-btn:hover { background: var(--paper-deep); }

.logo-drop { display: flex; align-items: center; gap: 10px; margin-top: 14px; }
.logo-drop input[type="file"] { display: none; }
.logo-label {
  display: inline-block; cursor: pointer; font: 600 0.85rem var(--font-body);
  border: 1.5px dashed var(--ink); border-radius: var(--radius); padding: 8px 14px; background: var(--card);
}
.logo-label:hover { background: var(--paper-deep); }
.logo-clear { font-size: 0.8rem; color: var(--warn); background: none; border: none; cursor: pointer; text-decoration: underline; display: none; }

/* preview side */
.preview-frame {
  background: #fff; border: 1.5px solid var(--ink); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 18px; display: flex; justify-content: center;
}
#qr-canvas { max-width: 100%; height: auto; display: block; }
.scan-status { margin-top: 13px; font-size: 0.86rem; display: flex; gap: 8px; align-items: start; }
.scan-status .dot { flex: none; width: 10px; height: 10px; border-radius: 50%; margin-top: 5px; background: var(--accent); }
.scan-status.warn .dot { background: var(--warn); }
.scan-status.warn { color: var(--warn); }

.dl-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 18px; }
.btn {
  font: 700 0.92rem var(--font-body); cursor: pointer; text-decoration: none;
  border: 1.5px solid var(--ink); border-radius: var(--radius);
  padding: 10px 16px; background: var(--card); color: var(--ink);
  box-shadow: var(--shadow-sm); transition: transform 0.08s, box-shadow 0.08s;
  display: inline-flex; align-items: center; gap: 7px;
}
.btn:hover { transform: translate(1px, 1px); box-shadow: 2px 2px 0 rgba(28,26,22,0.9); }
.btn:active { transform: translate(3px, 3px); box-shadow: none; }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent-deep); }
.btn.primary:hover { background: var(--accent-deep); }
.png-size {
  font: 600 0.85rem var(--font-body); border: 1.5px solid var(--ink);
  border-radius: var(--radius); padding: 9px 7px; background: var(--card);
}
.dl-note { font-size: 0.78rem; color: var(--ink-faint); margin-top: 10px; }

/* ---------- sections ---------- */
section.band { padding: 54px 0; }
section.band.deep { background: var(--paper-deep); border-top: 1.5px solid var(--ink); border-bottom: 1.5px solid var(--ink); }
.band h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); margin-bottom: 8px; }
.band .lede { color: var(--ink-soft); max-width: 62ch; margin-bottom: 28px; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step {
  background: var(--card); border: 1.5px solid var(--ink); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 20px;
}
.step .num { font: 700 1rem var(--font-mono); color: var(--accent); }
.step h3 { font-size: 1.12rem; margin: 6px 0 7px; }
.step p { font-size: 0.93rem; color: var(--ink-soft); }

.honest-box {
  border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--card);
  box-shadow: var(--shadow-sm); padding: 24px 26px; display: flex; gap: 20px; align-items: start;
}
.honest-box .stamp { flex: none; font: 700 0.7rem var(--font-mono); letter-spacing: 0.08em; color: var(--gold); border: 1.5px solid var(--gold); border-radius: var(--radius); padding: 4px 8px; transform: rotate(-4deg); margin-top: 4px; }
.honest-box h3 { font-size: 1.15rem; margin-bottom: 6px; }
.honest-box p { font-size: 0.94rem; color: var(--ink-soft); }

.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.guide-card {
  background: var(--card); border: 1.5px solid var(--ink); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: 20px; text-decoration: none; color: var(--ink);
  transition: transform 0.08s, box-shadow 0.08s; display: block;
}
.guide-card:hover { transform: translate(1px,1px); box-shadow: 2px 2px 0 rgba(28,26,22,0.9); color: var(--ink); }
.guide-card .kicker { font: 700 0.72rem var(--font-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); }
.guide-card h3 { font-size: 1.08rem; margin: 7px 0 6px; }
.guide-card p { font-size: 0.88rem; color: var(--ink-soft); }

/* FAQ */
.faq details {
  border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--card);
  margin-bottom: 10px; overflow: hidden;
}
.faq summary {
  cursor: pointer; font-weight: 700; padding: 15px 18px; list-style: none;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font: 600 1.3rem var(--font-mono); color: var(--accent); }
.faq details[open] summary::after { content: '–'; }
.faq details p { padding: 0 18px 16px; color: var(--ink-soft); }

/* ---------- footer ---------- */
.site-footer { border-top: 1.5px solid var(--ink); padding: 34px 0 42px; background: var(--paper); }
.site-footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
.site-footer h4 { font: 700 0.78rem var(--font-body); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); margin-bottom: 10px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 6px; }
.site-footer a { color: var(--ink); text-decoration: none; font-size: 0.92rem; }
.site-footer a:hover { color: var(--accent); text-decoration: underline; }
.site-footer .tagline { font-size: 0.92rem; color: var(--ink-soft); max-width: 34ch; }
.site-footer .fineprint { margin-top: 26px; font-size: 0.8rem; color: var(--ink-faint); }

/* ---------- article pages ---------- */
.article-wrap { max-width: 760px; margin: 0 auto; padding: 48px 20px 30px; }
.article-wrap .kicker { font: 700 0.75rem var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); }
.article-wrap h1 { font-size: clamp(1.9rem, 4.5vw, 2.7rem); margin: 10px 0 22px; }
.article-body h2 { font-size: 1.55rem; margin: 34px 0 12px; }
.article-body h3 { font-size: 1.18rem; margin: 26px 0 10px; }
.article-body p, .article-body li { color: #2E2B25; }
.article-body p { margin-bottom: 14px; }
.article-body ul, .article-body ol { margin: 0 0 16px 24px; }
.article-body li { margin-bottom: 6px; }
.article-body blockquote {
  border-left: 3px solid var(--accent); background: var(--accent-wash);
  padding: 12px 16px; margin: 18px 0; border-radius: 0 var(--radius) var(--radius) 0;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 0.93rem; background: var(--card); }
.article-body th, .article-body td { border: 1.5px solid var(--ink); padding: 9px 12px; text-align: left; vertical-align: top; }
.article-body th { background: var(--paper-deep); font-weight: 700; }

.cta-box {
  border: 1.5px solid var(--ink); border-radius: var(--radius); background: var(--accent-wash);
  box-shadow: var(--shadow-sm); padding: 24px 26px; margin: 38px 0; text-align: center;
}
.cta-box h3 { font-size: 1.3rem; margin-bottom: 8px; }
.cta-box p { color: var(--ink-soft); margin-bottom: 16px; }

.related { border-top: 1.5px dashed var(--line); margin-top: 44px; padding-top: 26px; }
.related h2 { font-size: 1.3rem; margin-bottom: 16px; }

/* ---------- print sheet ---------- */
#print-sheet { display: none; }
@media print {
  body > *:not(#print-sheet) { display: none !important; }
  body::before { display: none; }
  #print-sheet { display: block !important; }
  #print-sheet .sheet-grid { display: grid; gap: 10mm; }
  #print-sheet .sheet-grid.g1 { grid-template-columns: 1fr; justify-items: center; padding-top: 40mm; }
  #print-sheet .sheet-grid.g4 { grid-template-columns: repeat(2, 1fr); }
  #print-sheet .sheet-grid.g12 { grid-template-columns: repeat(3, 1fr); }
  #print-sheet .sheet-grid.g24 { grid-template-columns: repeat(4, 1fr); }
  #print-sheet .cell { text-align: center; break-inside: avoid; padding: 4mm; }
  #print-sheet .cell img { width: 100%; max-width: 90mm; height: auto; }
  #print-sheet .g4 .cell img { max-width: 70mm; }
  #print-sheet .g12 .cell img { max-width: 45mm; }
  #print-sheet .g24 .cell img { max-width: 34mm; }
  #print-sheet .cell .cap { font: 600 11pt var(--font-body); margin-top: 2mm; color: #000; }
}

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .tool-grid { grid-template-columns: 1fr; }
  .tool-left { border-right: none; border-bottom: 1.5px solid var(--ink); }
  .steps, .guide-grid { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; }
  .seal { display: none; }
  .site-footer .cols { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
}