/* ==========================================================================
   GenzeeTools — shared stylesheet
   Palette: deep pine teal accent on a cool porcelain background.
   Fonts: Sora (headings) + Inter (body), loaded from Google Fonts with swap.
   ========================================================================== */

:root {
  /* Color system */
  --ink: #17242e;
  --ink-soft: #465866;
  --ink-muted: #5b6c78;
  --bg: #f3f6f7;
  --surface: #ffffff;
  --surface-tint: #e9f2ef;
  --line: #dde5e8;
  --accent: #0b7a5e;
  --accent-deep: #085c47;
  --accent-soft: #d9efe7;
  --amber: #b45309;
  --amber-soft: #fdf0dd;
  --danger: #b3352c;
  --danger-soft: #fbe9e7;
  --focus-ring: #0b7a5e;

  /* Type */
  --font-head: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  /* Spacing scale */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4.5rem;

  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 1px 2px rgba(23, 36, 46, 0.06), 0 8px 24px rgba(23, 36, 46, 0.07);
  --maxw: 72rem;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}

img, svg, canvas { max-width: 100%; height: auto; }

h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: 1.25;
  color: var(--ink);
  margin: 0 0 var(--s-3);
}

h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.3rem, 3vw, 1.7rem); margin-top: var(--s-6); }
h3 { font-size: 1.15rem; margin-top: var(--s-5); }

p { margin: 0 0 var(--s-4); }

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
a:hover { color: var(--accent-deep); }

:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--s-4);
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--s-3);
  top: -4rem;
  z-index: 100;
  background: var(--surface);
  color: var(--accent-deep);
  padding: var(--s-2) var(--s-4);
  border-radius: var(--radius);
  transition: top 0.15s ease;
}
.skip-link:focus { top: var(--s-3); }

/* --------------------------------------------------------------------------
   Header + navigation (CSS-only mobile toggle)
   -------------------------------------------------------------------------- */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  min-height: 3.75rem;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.brand svg { flex: none; }
.brand .brand-accent { color: var(--accent); }

.nav-toggle { position: absolute; opacity: 0; }

.nav-toggle-label {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  cursor: pointer;
}
.nav-toggle-label span,
.nav-toggle-label::before,
.nav-toggle-label::after {
  content: "";
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}
.nav-toggle:focus-visible + .nav-toggle-label {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.site-nav {
  display: flex;
  gap: var(--s-2);
  flex-wrap: wrap;
}
.site-nav a {
  display: inline-block;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}
.site-nav a:hover { background: var(--surface-tint); color: var(--accent-deep); }
.site-nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent-deep); }

@media (max-width: 46rem) {
  .nav-toggle-label { display: flex; }
  .site-nav {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    padding-bottom: var(--s-3);
  }
  .site-nav a { padding: var(--s-3); border-radius: var(--radius); }
  .nav-toggle:checked ~ .site-nav { display: flex; }
}

/* --------------------------------------------------------------------------
   Hero + section basics
   -------------------------------------------------------------------------- */
main { padding-block: var(--s-6) var(--s-8); }

.hero {
  padding-block: var(--s-6) var(--s-5);
  max-width: 46rem;
}
.hero p.lead { font-size: 1.1rem; color: var(--ink-muted); }

.eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
  background: var(--accent-soft);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  margin-bottom: var(--s-3);
}

.breadcrumb {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin-bottom: var(--s-4);
}
.breadcrumb ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.35rem; }
.breadcrumb li + li::before { content: "/"; margin-right: 0.35rem; color: var(--line); }
.breadcrumb a { color: var(--ink-muted); }

/* --------------------------------------------------------------------------
   Tool grid + cards
   -------------------------------------------------------------------------- */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr));
  gap: var(--s-4);
  margin-block: var(--s-5);
  padding: 0;
  list-style: none;
}

.tool-tile {
  display: flex;
  gap: var(--s-3);
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--s-4);
  text-decoration: none;
  color: var(--ink);
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.tool-tile:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  color: var(--ink);
}
.tool-tile h3, .tool-tile .tile-title {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.2rem;
}
.tool-tile p { margin: 0; font-size: 0.87rem; color: var(--ink-muted); }

.tool-glyph {
  flex: none;
  display: grid;
  place-items: center;
  width: 2.9rem;
  height: 2.9rem;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   The signature tool card: form + live result panel
   -------------------------------------------------------------------------- */
.tool-card {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  margin-block: var(--s-5);
}
.tool-card.tool-card-stack { grid-template-columns: 1fr; }

.tool-form { padding: var(--s-5); }

.result-panel {
  background: linear-gradient(160deg, var(--accent-deep), var(--accent));
  color: #f2faf7;
  padding: var(--s-5);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.result-panel h2, .result-panel h3 {
  color: #ffffff;
  margin: 0;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.9;
}
.result-big {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.1;
  overflow-wrap: anywhere;
}
.result-sub { font-size: 0.9rem; opacity: 0.92; }

.result-rows { display: grid; gap: 0.55rem; margin-top: auto; }
.result-row {
  display: flex;
  justify-content: space-between;
  gap: var(--s-3);
  font-size: 0.95rem;
  padding-top: 0.55rem;
  border-top: 1px solid rgba(255, 255, 255, 0.25);
}
.result-row b { font-weight: 600; white-space: nowrap; }

@media (max-width: 52rem) {
  .tool-card { grid-template-columns: 1fr; }
}

/* Forms */
.field { margin-bottom: var(--s-4); }
.field label, fieldset legend {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 0.35rem;
}
.field .hint { font-size: 0.8rem; color: var(--ink-muted); margin-top: 0.3rem; }

input[type="text"],
input[type="number"],
input[type="date"],
input[type="email"],
input[type="url"],
select,
textarea {
  width: 100%;
  padding: 0.65rem 0.8rem;
  font: inherit;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 1px;
  border-color: var(--accent);
}
textarea { min-height: 8rem; resize: vertical; }

.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: var(--s-3);
}

fieldset {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--s-3) var(--s-4) var(--s-4);
  margin: 0 0 var(--s-4);
}
fieldset legend { padding-inline: 0.4rem; margin: 0; }

.choice { display: flex; align-items: center; gap: 0.5rem; margin-block: 0.35rem; font-size: 0.95rem; }
.choice input { width: 1.1rem; height: 1.1rem; accent-color: var(--accent); }

input[type="range"] { width: 100%; accent-color: var(--accent); }

.segmented {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  gap: 3px;
  background: var(--bg);
}
.segmented label {
  margin: 0;
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--ink-muted);
}
.segmented input { position: absolute; opacity: 0; }
.segmented input:checked + label { background: var(--accent); color: #fff; }
.segmented input:focus-visible + label { outline: 3px solid var(--focus-ring); outline-offset: 2px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font: 600 0.95rem var(--font-body);
  padding: 0.65rem 1.3rem;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  background: var(--accent);
  color: #ffffff;
}
.btn:hover { background: var(--accent-deep); color: #fff; }
.btn-secondary { background: transparent; color: var(--accent-deep); border-color: var(--accent); }
.btn-secondary:hover { background: var(--accent-soft); color: var(--accent-deep); }
.btn-ghost { background: transparent; color: var(--ink-muted); border-color: var(--line); }
.btn-ghost:hover { background: var(--bg); color: var(--ink); }
.btn-sm { padding: 0.35rem 0.8rem; font-size: 0.85rem; }
.btn-on-dark { background: #ffffff; color: var(--accent-deep); }
.btn-on-dark:hover { background: var(--accent-soft); color: var(--accent-deep); }

/* Tables */
.table-wrap { overflow-x: auto; margin-block: var(--s-4); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
caption { text-align: left; font-weight: 600; padding: var(--s-3); }
th, td { text-align: left; padding: 0.55rem 0.8rem; border-bottom: 1px solid var(--line); }
th { font-family: var(--font-head); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-muted); background: var(--bg); }
tbody tr:last-child td { border-bottom: none; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

/* Notices */
.notice {
  display: flex;
  gap: var(--s-3);
  background: var(--amber-soft);
  border: 1px solid #ecd3ab;
  border-radius: var(--radius);
  padding: var(--s-3) var(--s-4);
  font-size: 0.9rem;
  margin-block: var(--s-4);
}
.notice.notice-info { background: var(--surface-tint); border-color: var(--line); }

/* Collapsible sections */
details.fold {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  margin-block: var(--s-3);
}
details.fold summary {
  cursor: pointer;
  font-weight: 600;
  padding: var(--s-3) var(--s-4);
  list-style: none;
  position: relative;
  padding-right: 2.5rem;
}
details.fold summary::-webkit-details-marker { display: none; }
details.fold summary::after {
  content: "+";
  position: absolute;
  right: var(--s-4);
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-head);
  color: var(--accent);
  font-size: 1.1rem;
}
details.fold[open] summary::after { content: "\2212"; }
details.fold .fold-body { padding: 0 var(--s-4) var(--s-4); }

/* --------------------------------------------------------------------------
   Article / long-form content
   -------------------------------------------------------------------------- */
.prose { max-width: 46rem; }
.prose ul, .prose ol { padding-left: 1.4rem; margin: 0 0 var(--s-4); }
.prose li { margin-bottom: 0.35rem; }
.prose blockquote {
  margin: var(--s-4) 0;
  padding: var(--s-3) var(--s-4);
  border-left: 4px solid var(--accent);
  background: var(--surface-tint);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.formula {
  font-family: "Courier New", monospace;
  background: var(--surface-tint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--s-3) var(--s-4);
  overflow-x: auto;
  margin-block: var(--s-4);
  font-size: 0.95rem;
}
.article-meta { color: var(--ink-muted); font-size: 0.88rem; margin-bottom: var(--s-5); }

.post-list { list-style: none; padding: 0; margin: var(--s-5) 0; display: grid; gap: var(--s-4); }
.post-list .tool-tile { align-items: center; }

/* Section headings with rule */
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  border-bottom: 2px solid var(--line);
  padding-bottom: var(--s-2);
  margin-top: var(--s-7);
}
.section-head h2 { margin: 0; }
.section-head a { font-size: 0.9rem; white-space: nowrap; }

/* --------------------------------------------------------------------------
   Invoice generator specifics
   -------------------------------------------------------------------------- */
.invoice-sheet {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: var(--s-5);
  margin-block: var(--s-4);
}
.invoice-head { display: flex; justify-content: space-between; flex-wrap: wrap; gap: var(--s-4); margin-bottom: var(--s-4); }
.invoice-parties { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: var(--s-4); margin-bottom: var(--s-4); }
.invoice-totals { margin-left: auto; max-width: 20rem; display: grid; gap: 0.4rem; }
.invoice-totals .result-row { border-top-color: var(--line); color: var(--ink); }
.invoice-grand { font-size: 1.2rem; font-weight: 700; font-family: var(--font-head); }
.line-items input { font-size: 0.92rem; }

/* QR + image tools */
.preview-box {
  display: grid;
  place-items: center;
  min-height: 12rem;
  background: var(--bg);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: var(--s-4);
  margin-block: var(--s-3);
  text-align: center;
  color: var(--ink-muted);
}
.preview-box img, .preview-box canvas { border-radius: 6px; background: #fff; }

/* Strength meter */
.meter {
  height: 0.55rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
  overflow: hidden;
}
.meter > span { display: block; height: 100%; width: 0; border-radius: 999px; background: #ffd166; transition: width 0.2s ease; }

/* Password output */
.password-out {
  font-family: "Courier New", monospace;
  font-size: 1.15rem;
  word-break: break-all;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius);
  padding: var(--s-3);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--ink);
  color: #c8d4dc;
  margin-top: var(--s-8);
  font-size: 0.92rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: var(--s-5);
  padding-block: var(--s-6);
}
.site-footer h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #ffffff;
  margin: 0 0 var(--s-3);
}
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.45rem; }
.site-footer a { color: #c8d4dc; text-decoration: none; }
.site-footer a:hover { color: #ffffff; text-decoration: underline; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-block: var(--s-4);
  display: flex;
  justify-content: space-between;
  gap: var(--s-3);
  flex-wrap: wrap;
  font-size: 0.85rem;
}
.footer-brand { font-family: var(--font-head); font-weight: 700; color: #fff; font-size: 1.1rem; }

/* --------------------------------------------------------------------------
   Print styles — results and invoices come out clean
   -------------------------------------------------------------------------- */
@media print {
  body { background: #fff; color: #000; }
  .site-header, .site-footer, .site-nav, .breadcrumb, .no-print,
  .related-tools, .prose, .faq-section, .btn, .tool-form .no-print { display: none !important; }
  main { padding: 0; }
  .tool-card, .invoice-sheet, .table-wrap { box-shadow: none; border-color: #bbb; }
  .result-panel { background: #fff !important; color: #000; border-top: 1px solid #bbb; }
  .result-panel h2, .result-panel h3 { color: #000; }
  .result-row { border-top-color: #ccc; }
  a { color: #000; text-decoration: none; }
  th { background: #f2f2f2; color: #000; }
  body.invoice-page .tool-form, body.invoice-page .notice { display: none !important; }
  .invoice-sheet { border: none; padding: 0; }
}