/* ---------------------------------------------------------
   Tokens
--------------------------------------------------------- */
:root {
  --paper:        #FFFFFF;
  --paper-dim:     #EAF7EF;
  --paper-shadow:  #D8EFE0;
  --ink:           #123524;
  --ink-soft:      #4C6659;
  --ink-faint:     #8FA79A;
  --line:          #D6ECDD;
  --stamp:         #0E9E73;
  --stamp-dark:    #0B7D5B;
  --stamp-ink:     #FFFFFF;
  --ledger:        #1487A8;
  --ledger-light:  #E4F5F7;

  --display: "Fraunces", ui-serif, Georgia, serif;
  --body: "IBM Plex Sans", -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  --radius: 3px;
  --shadow-card: 0 1px 0 var(--line), 0 8px 20px -12px rgba(18,53,36,0.25);
}

* { box-sizing: border-box; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* subtle paper grain */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 999;
  opacity: 0.035; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------------------------------------------------------
   Header
--------------------------------------------------------- */
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px clamp(20px, 5vw, 56px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark { color: var(--stamp); display: inline-flex; }
.brand-name { font-family: var(--display); font-weight: 600; font-size: 20px; letter-spacing: -0.01em; }
.brand-name.small { font-size: 16px; }

.site-nav { display: flex; align-items: center; gap: 28px; font-size: 14px; }
.site-nav a { text-decoration: none; color: var(--ink-soft); }
.site-nav a:hover { color: var(--ink); }
.nav-cta {
  border: 1px solid var(--ink); border-radius: var(--radius);
  padding: 7px 14px; color: var(--ink) !important;
}
.nav-cta:hover { background: var(--ink); color: var(--paper) !important; }

@media (max-width: 640px) {
  .site-header { flex-wrap: wrap; gap: 12px; padding: 16px 20px; }
  .site-nav { gap: 16px; font-size: 13px; flex-wrap: wrap; }
  .nav-cta { padding: 6px 12px; }
}

/* ---------------------------------------------------------
   Hero
--------------------------------------------------------- */
.hero {
  padding: clamp(48px, 8vw, 96px) clamp(20px, 5vw, 56px) 40px;
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center;
}
@media (max-width: 860px) { .hero { grid-template-columns: 1fr; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ledger); margin-bottom: 18px;
}
.eyebrow::before { content: ""; width: 7px; height: 7px; background: var(--ledger); border-radius: 50%; display: inline-block; }

.hero h1 {
  font-family: var(--display); font-weight: 600; letter-spacing: -0.02em;
  font-size: clamp(38px, 5.2vw, 62px); line-height: 1.03; margin: 0 0 20px;
}
.hero h1 em { font-style: italic; color: var(--stamp); }

.hero p.lede { font-size: 18px; color: var(--ink-soft); max-width: 46ch; margin: 0 0 28px; }

.hero-stats { display: flex; gap: 28px; font-family: var(--mono); font-size: 13px; color: var(--ink-soft); }
.hero-stats b { display: block; font-family: var(--display); font-size: 22px; color: var(--ink); font-weight: 600; }

/* the "document stack" signature visual */
.doc-stack { position: relative; height: 340px; }
.doc-stack .sheet {
  position: absolute; width: 220px; height: 280px; left: 50%; top: 20px;
  background: var(--paper);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  border-radius: 2px;
}
.doc-stack .sheet:nth-child(1) { transform: translateX(-50%) rotate(-7deg); z-index: 1; }
.doc-stack .sheet:nth-child(2) { transform: translateX(-50%) rotate(3deg); z-index: 2; }
.doc-stack .sheet:nth-child(3) {
  transform: translateX(-50%) rotate(-1.5deg); z-index: 3;
  padding: 22px 20px; display: flex; flex-direction: column; gap: 8px;
}
.doc-stack .sheet:nth-child(3) .rule { height: 6px; background: var(--paper-dim); border-radius: 2px; }
.doc-stack .sheet:nth-child(3) .rule:nth-child(1) { width: 55%; height: 10px; background: var(--ledger-light); margin-bottom: 6px; }
.doc-stack .sheet:nth-child(3) .rule:nth-child(4) { width: 70%; }
.doc-stack .stamp-mark {
  position: absolute; right: -6px; bottom: 46px; z-index: 4;
  width: 92px; height: 92px; border: 3px solid var(--stamp); border-radius: 50%;
  color: var(--stamp); display: flex; align-items: center; justify-content: center;
  transform: rotate(-14deg); font-family: var(--mono); font-size: 11px; text-align: center;
  letter-spacing: 0.04em; line-height: 1.3; opacity: 0.9;
}

/* ---------------------------------------------------------
   Tool grid ("filing tabs")
--------------------------------------------------------- */
.tool-section { padding: 12px clamp(20px, 5vw, 56px) 80px; }
.tool-section h2 {
  font-family: var(--display); font-size: 26px; font-weight: 600; margin: 40px 0 22px;
}

.tool-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px;
}

.tool-card {
  position: relative; text-align: left; cursor: pointer;
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 18px 18px; display: flex; flex-direction: column; gap: 10px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  text-decoration: none; color: var(--ink);
}
.tool-card::before {
  content: attr(data-tab);
  position: absolute; top: -9px; left: 16px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.06em;
  background: var(--ledger); color: var(--paper);
  padding: 2px 8px; border-radius: 2px;
}
.tool-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card); border-color: var(--ink-faint); }
.tool-icon { color: var(--stamp); }
.tool-card h3 { font-family: var(--display); font-size: 18px; font-weight: 600; margin: 4px 0 0; }
.tool-card p { font-size: 13.5px; color: var(--ink-soft); margin: 0; }

/* ---------------------------------------------------------
   Workspace (individual tool page)
--------------------------------------------------------- */
.workspace { padding: 40px clamp(20px, 5vw, 56px) 100px; max-width: 980px; margin: 0 auto; }
.workspace-back {
  display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 13px;
  color: var(--ink-soft); text-decoration: none; margin-bottom: 22px;
}
.workspace-back:hover { color: var(--ink); }

.workspace-head { margin-bottom: 28px; }
.workspace-head .eyebrow { margin-bottom: 10px; }
.workspace-head h1 { font-family: var(--display); font-size: clamp(28px, 4vw, 38px); font-weight: 600; margin: 0 0 10px; letter-spacing: -0.01em; }
.workspace-head p { color: var(--ink-soft); max-width: 60ch; margin: 0; }

.dropzone {
  border: 1.5px dashed var(--line); border-radius: 6px; padding: 46px 24px;
  text-align: center; background: var(--paper-dim);
  transition: border-color 0.15s ease, background 0.15s ease;
  cursor: pointer;
}
.dropzone.drag { border-color: var(--stamp); background: var(--ledger-light); }
.dropzone svg { color: var(--ink-faint); margin-bottom: 12px; }
.dropzone .dz-title { font-family: var(--display); font-size: 19px; font-weight: 600; margin-bottom: 4px; }
.dropzone .dz-sub { color: var(--ink-soft); font-size: 13.5px; }
.dropzone input { display: none; }

.file-list { list-style: none; margin: 18px 0 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.file-row {
  display: flex; align-items: center; gap: 12px;
  border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 14px;
  background: var(--paper);
  font-family: var(--mono); font-size: 13px;
}
.file-row .fname { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.move-btns { display: flex; gap: 2px; flex-shrink: 0; }
.move-btn {
  background: var(--paper); border: 1px solid var(--line); border-radius: 4px;
  width: 30px; height: 30px; display: flex; align-items: center; justify-content: center;
  color: var(--ink); cursor: pointer; flex-shrink: 0;
}
.move-btn:hover:not(:disabled) { border-color: var(--ink); }
.move-btn:disabled { opacity: 0.3; cursor: default; }
.file-row .fsize { color: var(--ink-faint); }
.file-row button.remove {
  background: none; border: none; color: var(--stamp); cursor: pointer; font-size: 16px; line-height: 1;
  padding: 8px; flex-shrink: 0;
}
.file-row .drag-handle { cursor: grab; color: var(--ink-faint); }
.file-row[draggable="true"] { }
.file-row.dragging { opacity: 0.4; }

.thumb-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 14px;
  margin: 22px 0;
}
.thumb {
  position: relative; border: 1px solid var(--line); border-radius: 4px; overflow: hidden;
  background: var(--paper); cursor: pointer; user-select: none;
}
.thumb[draggable="true"] { cursor: grab; }
.thumb.dragging { opacity: 0.35; }
.thumb img, .thumb canvas { width: 100%; display: block; transition: transform 0.2s ease; }
.thumb .thumb-num {
  position: absolute; bottom: 0; left: 0; right: 0; text-align: center;
  font-family: var(--mono); font-size: 11px; background: rgba(251,249,244,0.92);
  border-top: 1px solid var(--line); padding: 3px 0; color: var(--ink-soft);
}
.thumb.selected { outline: 2px solid var(--stamp); outline-offset: -2px; }
.thumb.selected::after {
  content: "✕ REMOVE"; position: absolute; inset: 0; background: rgba(178,58,46,0.82);
  color: var(--stamp-ink); display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em;
}
.thumb .rotate-btn {
  position: absolute; top: 5px; right: 5px; z-index: 2;
  background: var(--paper); border: 1px solid var(--line); border-radius: 50%;
  width: 30px; height: 30px; display: flex; align-items: center; justify-content: center;
  color: var(--ink); cursor: pointer;
}
.thumb .rotate-btn:hover { border-color: var(--ink); }

.thumb .move-btn-left,
.thumb .move-btn-right {
  position: absolute; top: 5px; z-index: 2; border-radius: 50%;
  width: 30px; height: 30px;
}
.thumb .move-btn-left { left: 5px; }
.thumb .move-btn-right { right: 5px; }

.field-group { margin: 20px 0; }
.field-group label { display: block; font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em; color: var(--ink-soft); margin-bottom: 6px; text-transform: uppercase; }
.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field-group input[type="text"], .field-group input[type="number"], .field-group select {
  font-family: var(--body); font-size: 14px; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--paper); color: var(--ink); min-width: 160px;
}
.field-group input[type="range"] { width: 220px; }
.radio-pills { display: flex; gap: 8px; flex-wrap: wrap; }
.radio-pill {
  border: 1px solid var(--line); border-radius: 20px; padding: 8px 16px; font-size: 13.5px;
  cursor: pointer; user-select: none;
}
.radio-pill.active { border-color: var(--ledger); background: var(--ledger-light); color: var(--ledger); font-weight: 500; }

.action-row { display: flex; align-items: center; gap: 16px; margin-top: 30px; flex-wrap: wrap; }

.btn {
  font-family: var(--body); font-weight: 600; font-size: 14.5px;
  padding: 13px 26px; border-radius: var(--radius); border: 1px solid transparent;
  cursor: pointer; display: inline-flex; align-items: center; gap: 8px;
  transition: background 0.15s ease, transform 0.1s ease;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--stamp); color: var(--stamp-ink); }
.btn-primary:hover { background: var(--stamp-dark); }
.btn-primary:disabled { background: var(--ink-faint); cursor: not-allowed; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink); }

.privacy-note {
  display: flex; align-items: flex-start; gap: 10px; margin-top: 26px;
  padding: 14px 16px; background: var(--ledger-light); border-radius: var(--radius);
  font-size: 13px; color: var(--ledger);
}
.privacy-note svg { flex-shrink: 0; margin-top: 1px; }

.progress-line {
  height: 3px; background: var(--line); border-radius: 2px; overflow: hidden; margin-top: 18px; display: none;
}
.progress-line.active { display: block; }
.progress-line span { display: block; height: 100%; width: 30%; background: var(--stamp); animation: slide 1.1s ease-in-out infinite; }
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(340%); } }

.result-panel {
  margin-top: 26px; padding: 20px; border: 1px solid var(--ledger); border-radius: var(--radius);
  background: var(--ledger-light); display: none; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.result-panel.active { display: flex; }
.result-panel .result-text { font-family: var(--mono); font-size: 13px; color: var(--ledger); }
.result-panel .result-text b { font-family: var(--display); font-size: 15px; display: block; color: var(--ink); }

/* ---------------------------------------------------------
   About / how it works
--------------------------------------------------------- */
.about {
  padding: 60px clamp(20px, 5vw, 56px); border-top: 1px solid var(--line);
  background: var(--paper-dim);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
}
@media (max-width: 760px) { .about { grid-template-columns: 1fr; } }
.about-item .tag { font-family: var(--mono); font-size: 11px; color: var(--stamp); letter-spacing: 0.06em; }
.about-item h3 { font-family: var(--display); font-size: 19px; margin: 8px 0 8px; }
.about-item p { color: var(--ink-soft); font-size: 14px; margin: 0; }

/* ---------------------------------------------------------
   FAQ
--------------------------------------------------------- */
.faq { padding: 60px clamp(20px, 5vw, 56px) 30px; max-width: 820px; margin: 0 auto; }
.faq h2 { font-family: var(--display); font-size: 26px; font-weight: 600; margin: 0 0 22px; }
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; background: var(--paper);
}
.faq-item summary {
  cursor: pointer; font-family: var(--body); font-weight: 600; font-size: 15px; list-style: none;
  display: flex; align-items: center; justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--stamp); font-size: 20px; font-weight: 400; margin-left: 12px; }
.faq-item[open] summary::after { content: "–"; }
.faq-item p { color: var(--ink-soft); font-size: 14px; margin: 12px 0 0; line-height: 1.55; }

/* ---------------------------------------------------------
   Footer
--------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); padding: 30px clamp(20px, 5vw, 56px); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-inner p { color: var(--ink-soft); font-size: 13.5px; margin: 6px 0 0; }
.footer-inner p.trademark { font-family: var(--mono); font-size: 11.5px; color: var(--ink-faint); margin-top: 10px; letter-spacing: 0.02em; }
.footer-inner p.trademark a { color: var(--ledger); text-decoration: underline; }

/* ---------------------------------------------------------
   Ad slot
--------------------------------------------------------- */
.ad-slot {
  max-width: 980px; margin: 20px auto; padding: 6px clamp(20px, 5vw, 56px);
}
.ad-slot::before {
  content: "Advertisement"; display: block; text-align: center;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ink-faint); margin-bottom: 6px;
}
.stamp-chip {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em;
  border: 1px solid var(--ledger); color: var(--ledger); padding: 5px 10px; border-radius: 20px;
}

/* ---------------------------------------------------------
   Toast
--------------------------------------------------------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translate(-50%, 20px);
  background: var(--ink); color: var(--paper); font-size: 13.5px; font-family: var(--body);
  padding: 12px 20px; border-radius: var(--radius); opacity: 0; pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease; z-index: 1000; max-width: 90vw; text-align: center;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.toast.error { background: var(--stamp-dark); }

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, .thumb:focus-visible, .tool-card:focus-visible {
  outline: 2px solid var(--stamp); outline-offset: 2px;
}

@media (max-width: 600px) {
  .hero { padding-top: 32px; }
  .doc-stack { height: 240px; }
}