/* ============================================================
   TaxXML.ca — "Filing desk" design system
   A clean slip on a desk: cool paper, ledger ink, one pen blue
   for actions, filed green only for "this is valid".
   ============================================================ */

:root {
  /* Palette */
  --paper: #F4F6F8;        /* Slip paper: page background */
  --sheet: #FFFFFF;        /* Sheet: wizard card / form surface */
  --ink: #14263B;          /* Ledger ink: body text and headings */
  --rule: #C5CED8;         /* Form rule: borders, table rules, box outlines */
  --pen: #1C4E8A;          /* Pen blue: primary actions, links, focus */
  --filed: #1D6B45;        /* Filed green: matched / valid / ready only */
  --correction: #A12A2A;   /* Correction red: errors only */

  /* Derived (tints of the palette, not new hues) */
  --ink-2: #3E5068;        /* secondary text */
  --ink-3: #5B6B7E;        /* muted text, still AA on paper and sheet */
  --rule-soft: #E1E6EC;    /* inner table rules */
  --pen-dark: #163F70;
  --pen-tint: #E8EEF6;
  --filed-tint: #E9F2EC;
  --correction-tint: #F7EAEA;

  /* Legacy names used by legal pages and JS-injected inline styles */
  --bg-primary: var(--paper);
  --bg-secondary: var(--paper);
  --bg-card: var(--sheet);
  --border: var(--rule);
  --text-primary: var(--ink);
  --text-secondary: var(--ink-2);
  --text-muted: var(--ink-3);
  --accent: var(--pen);
  --success: var(--filed);
  --danger: var(--correction);

  --radius-sm: 6px;   /* inputs, buttons */
  --radius: 10px;     /* the sheet */

  --font: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

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

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font);
  font-size: 0.9375rem; /* 15px */
  line-height: 1.55;
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; color: var(--ink); }

a { color: var(--pen); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--pen-dark); text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--pen); outline-offset: 2px; }

code, .mono { font-family: var(--mono); }
code { font-size: 0.88em; }

/* ---- HEADER ---- */
#site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--sheet);
  border-bottom: 1px solid var(--rule);
}
.header-inner {
  max-width: 1200px; margin: 0 auto; padding: 0.75rem 2rem;
  display: flex; align-items: center; justify-content: space-between;
}
.logo { display: flex; align-items: center; text-decoration: none; }
.logo-text { font-size: 1.25rem; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; }
.logo-accent { color: var(--ink-3); font-weight: 500; }
nav { display: flex; gap: 1.5rem; align-items: center; }
nav a { color: var(--ink-2); font-size: 0.9rem; font-weight: 500; text-decoration: none; }
nav a:hover { color: var(--ink); text-decoration: underline; }
.nav-cta {
  background: var(--pen); color: #fff !important; padding: 0.45rem 1.1rem;
  border-radius: var(--radius-sm); font-weight: 600; white-space: nowrap;
}
.nav-cta:hover { background: var(--pen-dark); text-decoration: none !important; }

/* ---- BUTTONS (flat: no gradient, no glow) ---- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.7rem 1.4rem; border-radius: var(--radius-sm);
  font-family: var(--font); font-size: 0.95rem; font-weight: 600;
  border: 1px solid transparent; cursor: pointer;
  transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}
.btn-primary { background: var(--pen); color: #fff; }
.btn-primary:hover { background: var(--pen-dark); }
.btn-ghost { background: var(--sheet); color: var(--ink-2); border-color: var(--rule); }
.btn-ghost:hover { color: var(--ink); border-color: var(--ink-3); }
.btn-lg { padding: 0.9rem 1.8rem; font-size: 1rem; }
a.btn { text-decoration: none; }
.btn-row { display: flex; justify-content: space-between; margin-top: 2rem; }
.btn-row-end { justify-content: flex-end; }

/* ---- HERO ---- */
#hero {
  min-height: 70vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 7rem 2rem 3rem;
}
.hero-content { max-width: 760px; text-align: center; }
#hero h1 { font-size: 3rem; font-weight: 600; line-height: 1.12; letter-spacing: -0.02em; margin-bottom: 1rem; }
.accent-text { color: var(--pen); }
.hero-sub { color: var(--ink-2); font-size: 1.125rem; line-height: 1.6; max-width: 36em; margin: 0 auto 2rem; }
.hero-sub strong { color: var(--ink); }

/* Hero return picker: each button is set like the header strip of a paper slip */
.return-picker { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.75rem; }
.return-pick {
  display: flex; flex-direction: column; align-items: stretch; gap: 0;
  padding: 0; text-align: left; cursor: pointer;
  background: var(--sheet); color: var(--ink-2);
  border: 1px solid var(--rule); border-radius: 2px;
  font-family: var(--font);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.return-pick b {
  font-size: 1.75rem; font-weight: 600; line-height: 1; color: var(--ink); letter-spacing: -0.01em;
  padding: 0.85rem 1rem 0.7rem; border-bottom: 1px solid var(--rule);
}
.return-pick span { font-size: 0.8rem; line-height: 1.35; padding: 0.55rem 1rem 0.75rem; }
.return-pick:hover { border-color: var(--pen); box-shadow: inset 0 3px 0 var(--pen); }
.return-pick:hover b { color: var(--pen); }
.return-pick:focus-visible, .nav-cta:focus-visible { outline: 2px solid var(--pen); outline-offset: 3px; }

/* Trust strip: three checkable claims, not slogans */
.hero-trust {
  list-style: none; max-width: 36rem; margin: 2rem auto 0; text-align: left;
  display: flex; flex-direction: column; gap: 0.5rem;
  color: var(--ink-2); font-size: 0.85rem; line-height: 1.5;
}
.hero-trust li { padding-left: 0.8rem; border-left: 2px solid var(--rule); }

/* ---- SECTIONS ---- */
#converter { max-width: 1000px; margin: 0 auto; padding: 3.5rem 2rem 5rem; }
#converter h2 { text-align: center; font-size: 2.25rem; letter-spacing: -0.01em; margin-bottom: 2rem; }

/* ---- PROGRESS BAR ---- */
.progress-bar {
  display: flex; align-items: center; justify-content: center; gap: 0; margin-bottom: 2rem;
}
.progress-step {
  display: flex; align-items: center; gap: 0.45rem;
  color: var(--ink-3); font-size: 0.85rem; font-weight: 500;
  padding: 0.5rem 0.75rem;
}
/* Step numbers sit in square boxes, like the numbered boxes on a slip */
.progress-step span {
  width: 24px; height: 24px; display: inline-flex;
  align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 600;
  background: var(--sheet); border: 1px solid var(--rule); color: var(--ink-3);
}
.progress-step.active { color: var(--ink); font-weight: 600; }
.progress-step.active span { background: var(--pen); border-color: var(--pen); color: #fff; }
.progress-step.done { color: var(--filed); }
.progress-step.done span { background: var(--filed); border-color: var(--filed); color: #fff; }
.progress-line { width: 40px; height: 1px; background: var(--rule); margin: 0 0.2rem; }

/* ---- CARD (the sheet) ---- */
.card {
  background: var(--sheet); border: 1px solid var(--rule);
  border-radius: var(--radius); padding: 2.5rem;
}
.card h3 { font-size: 1.5rem; margin-bottom: 0.4rem; }
.card > p { color: var(--ink-2); margin-bottom: 1.5rem; }

/* ---- DROPZONE ---- */
.dropzone {
  border: 1px dashed var(--ink-3); border-radius: var(--radius-sm);
  background: var(--paper);
  padding: 2.75rem 2rem; text-align: center; cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s;
}
.dropzone:hover, .dropzone.drag-over { border-color: var(--pen); border-style: solid; background: var(--pen-tint); }
.dropzone-icon { margin-bottom: 0.7rem; }
.dropzone-icon svg { width: 44px; height: 44px; color: var(--pen); stroke-width: 1.5; }
.dropzone-text { font-size: 1.1rem; font-weight: 600; color: var(--ink); }
.dropzone-sub { font-size: 0.85rem; color: var(--ink-2); margin-top: 0.3rem; }
.file-info {
  margin-top: 1rem; padding: 0.8rem 1rem; border-radius: var(--radius-sm);
  background: var(--filed-tint); border: 1px solid var(--filed);
  color: var(--filed); font-weight: 500; font-family: var(--mono); font-size: 0.85rem;
  overflow-wrap: anywhere;
}
.icon-sm { width: 16px; height: 16px; display: inline-block; vertical-align: middle; margin-right: 0.3rem; }
.step1-return { margin-bottom: 1.25rem; }
.sample-line { margin-top: 1rem; text-align: center; font-size: 0.85rem; color: var(--ink-2); }
.sample-line a { font-weight: 600; }

/* ---- FORMS ---- */
.form-section { margin-bottom: 2rem; padding-bottom: 2rem; border-bottom: 1px solid var(--rule); }
.form-section:last-of-type { border-bottom: none; }
.form-section h4 { font-size: 1.125rem; margin-bottom: 0.25rem; }
.form-hint { color: var(--ink-3); font-size: 0.85rem; margin-bottom: 1.2rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.form-row-3 { grid-template-columns: repeat(3, 1fr); }
.form-group { display: flex; flex-direction: column; gap: 0.3rem; margin-bottom: 0.5rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--ink); }
.form-control {
  padding: 0.65rem 0.85rem; border-radius: var(--radius-sm);
  background: var(--sheet); border: 1px solid var(--rule);
  color: var(--ink); font-family: var(--font); font-size: 0.9375rem;
  transition: border-color 0.15s;
}
.form-control:hover { border-color: var(--ink-3); }
.form-control:focus { outline: 2px solid var(--pen); outline-offset: -1px; border-color: var(--pen); }
.form-control::placeholder { color: #8794A3; }
/* Fixed-width identifiers: BN, SIN, NR account, ref ID, postal code. Easier to count to 15 by eye. */
.form-control.mono { font-family: var(--mono); font-size: 0.9rem; letter-spacing: 0.02em; }
select.form-control { cursor: pointer; }
.field-hint { font-size: 0.78rem; color: var(--ink-3); }

/* ---- COLUMN MAPPING TABLE ---- */
.mapping-table {
  width: 100%; border-collapse: collapse;
  border: 1px solid var(--rule); margin-bottom: 2rem; background: var(--sheet);
}
.mapping-table thead th {
  padding: 0.7rem 1rem; font-size: 0.85rem; font-weight: 600; text-align: left;
  color: var(--ink); background: var(--paper); border-bottom: 1px solid var(--rule);
}
.mapping-table thead th:first-child { border-right: 1px solid var(--rule); width: 42%; }
.mapping-table thead th:nth-child(2) { width: 8%; }
.mapping-table tbody td {
  padding: 0.5rem 1rem; border-top: 1px solid var(--rule-soft);
  font-size: 0.9rem; vertical-align: middle;
}
/* CRA field name column */
.mapping-table tbody td:first-child { font-weight: 500; color: var(--ink); border-right: 1px solid var(--rule); }
.mapping-table tbody tr:hover td { background: var(--paper); }
/* Status icon column */
.mapping-table tbody td:nth-child(2) { text-align: center; font-size: 1rem; }

/* CRA box number, drawn like the numbered box on a paper slip */
.box-tag {
  display: inline-block; min-width: 2.3em; margin-right: 0.6rem; padding: 0.05rem 0.3rem;
  border: 1px solid var(--ink-3); border-radius: 0;
  font-family: var(--mono); font-size: 0.75rem; font-weight: 500; line-height: 1.4;
  text-align: center; color: var(--ink); vertical-align: 0.05em;
}

.mapping-status-icon { display: inline-block; }
.mapping-status-icon.matched { color: var(--filed); font-weight: 600; }
.mapping-status-icon.unmatched { color: var(--ink-3); }

.mapping-select {
  width: 100%; padding: 0.45rem 0.65rem; background: var(--sheet);
  border: 1px solid var(--rule); border-radius: var(--radius-sm);
  color: var(--ink); font-family: var(--font); font-size: 0.875rem;
  cursor: pointer; transition: border-color 0.15s;
}
.mapping-select:focus { outline: 2px solid var(--pen); outline-offset: -1px; border-color: var(--pen); }
.mapping-select.is-mapped { border-color: var(--filed); background: var(--filed-tint); }
.mapping-select option { background: var(--sheet); color: var(--ink); }

.mapping-summary {
  display: flex; align-items: center; gap: 1.5rem; margin-bottom: 1rem;
  padding: 0.6rem 0; border-bottom: 1px solid var(--rule); font-size: 0.9rem;
}
.mapping-summary .count-matched { color: var(--filed); font-weight: 600; }
.mapping-summary .count-unmatched { color: var(--ink); font-weight: 600; }
.mapping-summary .count-label { color: var(--ink-2); }

/* ---- DATA PREVIEW TABLE ---- */
.data-preview h4 { font-size: 1.125rem; margin-bottom: 0.8rem; display: flex; align-items: center; gap: 0.8rem; }
.badge {
  display: inline-block; padding: 0.1rem 0.5rem; border: 1px solid var(--rule); border-radius: 2px;
  background: var(--paper); color: var(--ink-2); font-size: 0.78rem; font-weight: 500;
}
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); }
#preview-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; background: var(--sheet); }
#preview-table th {
  padding: 0.55rem 0.8rem; background: var(--paper); color: var(--ink);
  font-weight: 600; text-align: left; white-space: nowrap; border-bottom: 1px solid var(--rule);
}
#preview-table td {
  padding: 0.45rem 0.8rem; border-bottom: 1px solid var(--rule-soft); white-space: nowrap;
  max-width: 200px; overflow: hidden; text-overflow: ellipsis;
}
#preview-table tr:hover td { background: var(--paper); }

/* ---- SUCCESS / STEP 4 ---- */
.card-success { text-align: center; }
.card-success h3 { color: var(--filed); }
/* Filing receipt: the values to check before IFT, as a definition list */
.receipt {
  display: grid; grid-template-columns: max-content 1fr; column-gap: 2rem;
  max-width: 560px; margin: 1.5rem auto; text-align: left;
  border-top: 2px solid var(--ink);
}
.receipt dt, .receipt dd { padding: 0.55rem 0; border-bottom: 1px solid var(--rule); }
.receipt dt { color: var(--ink-2); font-size: 0.85rem; }
.receipt dd { color: var(--ink); font-weight: 600; overflow-wrap: anywhere; }
.receipt .mono { font-size: 0.9rem; font-weight: 500; }
#btn-download { overflow-wrap: anywhere; justify-content: center; font-family: var(--mono); font-weight: 500; }
.download-hint { color: var(--ink-2); font-size: 0.85rem; margin-top: 1rem; }

/* Tip line: one quiet text link */
.tip-line { margin-top: 1.25rem; font-size: 0.82rem; color: var(--ink-3); }
.tip-line a { color: var(--ink-2); }
.card-success .btn-row { margin-top: 2rem; }

/* ---- WARNINGS ---- */
.warnings-box {
  text-align: left; margin: 1.5rem 0; padding: 0.9rem 1.25rem;
  background: var(--paper); border: 1px solid var(--rule); border-left: 3px solid var(--ink);
  font-size: 0.85rem;
}
.warnings-box h4 { color: var(--ink); font-size: 0.95rem; margin-bottom: 0.4rem; }
.warnings-box ul { margin: 0; padding-left: 1.2rem; color: var(--ink-2); }

/* ---- FOOTER ---- */
footer { background: var(--sheet); border-top: 1px solid var(--rule); padding: 3rem 2rem 1.5rem; }
.footer-inner {
  max-width: 1000px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 2rem;
}
.footer-brand { max-width: 400px; }
.footer-brand p { color: var(--ink-2); font-size: 0.9rem; margin-top: 0.5rem; }
.footer-links { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links h4 { font-size: 0.9rem; color: var(--ink); margin-bottom: 0.25rem; }
.footer-links a { color: var(--ink-2); font-size: 0.85rem; text-decoration: none; }
.footer-links a:hover { color: var(--ink); text-decoration: underline; }
.footer-links a.footer-ift { color: var(--pen); }
.footer-bottom {
  max-width: 1000px; margin: 2rem auto 0; padding-top: 1.5rem;
  border-top: 1px solid var(--rule); text-align: center;
}
.footer-bottom p { color: var(--ink-3); font-size: 0.8rem; margin-bottom: 0.3rem; }
.footer-bottom a { font-weight: 600; text-decoration: none; }
.footer-bottom a:hover { text-decoration: underline; }
.footer-brand .footer-avanza { margin-top: 1.5rem; font-size: 0.85rem; color: var(--ink-3); font-weight: 500; }
.footer-avanza a { font-weight: 600; }

/* ---- FAQ: quiet rule-separated questions ---- */
#faq { max-width: 760px; margin: 0 auto; padding: 4rem 2rem 5rem; }
#faq h2 { font-size: 2.25rem; letter-spacing: -0.01em; margin-bottom: 1.5rem; }
.faq-grid { border-top: 2px solid var(--ink); }
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-item summary {
  padding: 1rem 2rem 1rem 0; cursor: pointer; font-weight: 600; font-size: 1rem;
  color: var(--ink); list-style: none; position: relative;
}
.faq-item summary:hover { color: var(--pen); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+'; position: absolute; right: 0.25rem; top: 0.95rem;
  font-weight: 400; font-size: 1.2rem; line-height: 1; color: var(--ink-3);
}
.faq-item[open] summary::after { content: '−'; }
.faq-item p { padding: 0 0 1.25rem; color: var(--ink-2); font-size: 0.9375rem; line-height: 1.65; max-width: 68ch; }
.faq-item p strong { color: var(--ink); }
.faq-signoff { display: block; margin-top: 0.5rem; font-style: italic; }

/* ---- CHECKBOX ---- */
.checkbox-label {
  display: flex; align-items: center; gap: 0.5rem; cursor: pointer;
  font-size: 0.9rem; color: var(--ink-2); margin-bottom: 1rem;
}
.checkbox-label input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--pen); cursor: pointer; }

/* ---- LEGAL PAGES ---- */
.legal { max-width: 760px; margin: 0 auto; padding: 7.5rem 2rem 4rem; }
.legal h1 { font-size: 2.25rem; line-height: 1.2; letter-spacing: -0.01em; margin-bottom: 0.4rem; }
.legal .legal-updated { color: var(--ink-3); font-size: 0.85rem; margin-bottom: 1.75rem; }
.legal h2 { font-size: 1.125rem; margin: 2rem 0 0.6rem; }
.legal p, .legal li { color: var(--ink-2); font-size: 0.9375rem; line-height: 1.65; }
.legal p { margin-bottom: 0.9rem; }
.legal ul, .legal ol { margin: 0 0 1rem 1.25rem; }
.legal li { margin-bottom: 0.45rem; }
.legal strong { color: var(--ink); }
.legal code { color: var(--ink); word-break: break-word; }

/* ---- UTILITIES ---- */
.hidden { display: none !important; }

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  #hero h1 { font-size: 2.25rem; }
  #converter h2, #faq h2 { font-size: 1.75rem; }
  .header-inner { padding: 0.7rem 1rem; }
  nav { gap: 0.75rem; }
  .legal { padding-top: 6.5rem; }
  .legal h1 { font-size: 1.75rem; }
  .form-row { grid-template-columns: 1fr; }
  .return-picker { grid-template-columns: 1fr 1fr; }
  .footer-inner { flex-direction: column; gap: 1.5rem; }
  .progress-step { font-size: 0.75rem; padding: 0.3rem 0.5rem; }
}
@media (max-width: 520px) {
  .header-inner { padding: 0.65rem 0.75rem; }
  nav { gap: 0.35rem; }
  nav a { font-size: 0.8rem; }
  .nav-cta { padding: 0.4rem 0.6rem; }
  .logo-text { font-size: 1.1rem; }
  #hero { padding: 6rem 1rem 2.5rem; }
  #hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 1rem; }
  #converter { padding: 4rem 1rem; }
  #faq { padding: 3rem 1rem 4rem; }
  .card { padding: 1.5rem 1.1rem; }
  .mapping-table tbody td, .mapping-table thead th { padding-left: 0.6rem; padding-right: 0.6rem; }
  .box-tag { display: table; margin: 0 0 0.25rem; }
  /* Progress: numbers only, label on the current step; lines absorb the slack */
  .progress-step { padding: 0.3rem 0.25rem; font-size: 0; gap: 0; }
  .progress-step.active { font-size: 0.75rem; gap: 0.35rem; }
  .progress-line { flex: 1 1 12px; width: auto; }
  .receipt { grid-template-columns: 1fr; }
  .receipt dt { padding-bottom: 0; border-bottom: none; }
  .receipt dd { padding-top: 0.15rem; }
  .btn-row { flex-direction: column; gap: 0.6rem; }
  .btn-row .btn { width: 100%; justify-content: center; }
  .btn-row .btn-primary { order: -1; }
  #btn-download { width: 100%; font-size: 0.88rem; padding: 0.9rem 1rem; }
}

/* ---- INLINE VALIDATION (correction red: errors only) ---- */
.form-control.has-error { border-color: var(--correction); }
.form-control.has-error:focus { outline-color: var(--correction); }
.field-error { font-size: 0.78rem; color: var(--correction); font-weight: 500; }
.errors-box {
  text-align: left; margin: 1.5rem 0 0; padding: 0.9rem 1.25rem;
  background: var(--correction-tint); border: 1px solid var(--correction); border-left-width: 3px;
  font-size: 0.85rem;
}
.errors-box h4 { color: var(--correction); font-size: 0.95rem; margin-bottom: 0.4rem; }
.errors-box ul { margin: 0; padding-left: 1.2rem; color: var(--ink); }

/* ---- IFT CHECKLIST (Step 4) ---- */
.ift-checklist {
  text-align: left; margin: 1.5rem 0 0; padding: 1rem 1.25rem;
  background: var(--paper); border: 1px solid var(--rule); font-size: 0.875rem;
}
.ift-checklist h4 { color: var(--ink); font-size: 1rem; margin-bottom: 0.5rem; }
.ift-checklist ul { margin: 0; padding-left: 1.2rem; color: var(--ink-2); line-height: 1.6; }
.ift-checklist li + li { margin-top: 0.4rem; }
.ift-checklist strong { color: var(--ink); }

/* Step 2 preview: cells that blocked the last Generate */
#preview-table td.cell-error { background: var(--correction-tint); color: var(--correction); font-weight: 500; }