/* ============================================================
   Best Free Tax Software — design tokens (Conviction UI)
   Light gray canvas, white cards with soft shadows, semantic
   color-coded verdict badges, tight modern sans typography.
   ============================================================ */

:root {
  --bg: #F5F6F8;
  --card: #FFFFFF;
  --border: #E4E7EC;
  --ink: #101828;
  --ink-soft: #475467;
  --ink-faint: #98A2B3;

  --blue: #2E5FEC;
  --blue-dark: #1D4FD8;
  --blue-soft-bg: #EEF2FF;

  --green: #17845B;
  --green-bg: #E7F6EF;
  --amber: #B54708;
  --amber-bg: #FFF6ED;
  --red: #B42318;
  --red-bg: #FEF3F2;
  --gray-badge: #667085;
  --gray-badge-bg: #F2F4F7;

  --font-display: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-body: 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(16,24,40,0.04), 0 2px 8px rgba(16,24,40,0.06);
  --shadow-hover: 0 2px 4px rgba(16,24,40,0.06), 0 6px 16px rgba(16,24,40,0.1);

  --max-w: 760px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- header ---- */

header.site {
  background: var(--card);
  border-bottom: 1px solid var(--border);
}

header.site .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.2rem;
  padding-bottom: 1.2rem;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.wordmark {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.wordmark span { color: var(--blue); }

nav.site-nav {
  display: flex;
  gap: 1.3rem;
  font-size: 0.85rem;
}
nav.site-nav a {
  color: var(--ink-soft);
  font-weight: 500;
}
nav.site-nav a:hover { color: var(--blue); text-decoration: none; }

/* ---- sections ---- */

.line-section {
  padding: 2.4rem 0 2rem;
}
.line-section:first-of-type { padding-top: 2.8rem; }

.line-number {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.5rem;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--blue);
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  line-height: 1.18;
  margin: 0 0 0.6rem;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }

p { margin: 0 0 1rem; color: var(--ink); }
.lede { font-size: 1.05rem; color: var(--ink-soft); }

/* ---- badges (signature element) ---- */

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}
.badge-free { color: var(--green); background: var(--green-bg); }
.badge-partial { color: var(--amber); background: var(--amber-bg); }
.badge-paid { color: var(--red); background: var(--red-bg); }
.badge-na { color: var(--gray-badge); background: var(--gray-badge-bg); }

/* ---- checklist ---- */

.field-list { list-style: none; margin: 1.1rem 0; padding: 0; }
.field-list li {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.96rem;
}
.field-list li:last-child { border-bottom: none; }
.box {
  width: 0.9rem; height: 0.9rem;
  border-radius: 50%;
  background: var(--blue-soft-bg);
  border: 1.5px solid var(--blue);
  flex-shrink: 0;
  margin-top: 0.2rem;
}

/* ---- quick-match quiz ---- */

.quiz {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.8rem 1.7rem 1.7rem;
  margin-top: 1.4rem;
}

.quiz-step { display: none; }
.quiz-step.active { display: block; }

.quiz-q {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.quiz-options { display: grid; gap: 0.55rem; margin-top: 0.9rem; }

.quiz-options button {
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.96rem;
  padding: 0.75rem 0.95rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  cursor: pointer;
  color: var(--ink);
  transition: border-color 0.12s ease, background 0.12s ease;
}
.quiz-options button:hover {
  border-color: var(--blue);
  background: var(--blue-soft-bg);
}

.quiz-progress {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.stamp-result { text-align: center; padding: 0.6rem 0 0.2rem; }

.stamp {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.7rem;
  color: var(--blue);
  background: var(--blue-soft-bg);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  animation: fade-up 0.2s ease-out;
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-name {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
  font-size: 1.5rem;
  margin: 0.7rem 0 0.3rem;
}
.result-why { color: var(--ink-soft); margin-bottom: 1.1rem; }

.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9rem;
  color: #fff;
  background: var(--blue);
  padding: 0.65rem 1.2rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--blue);
}
.btn:hover { background: var(--blue-dark); border-color: var(--blue-dark); text-decoration: none; }

.btn-ghost {
  background: var(--card);
  color: var(--blue);
  border: 1px solid var(--border);
}
.btn-ghost:hover { border-color: var(--blue); background: var(--blue-soft-bg); text-decoration: none; }

.quiz-restart {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--ink-faint);
  background: none;
  border: none;
  text-decoration: underline;
  cursor: pointer;
  margin-top: 0.8rem;
}

@media (prefers-reduced-motion: reduce) {
  .stamp { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---- compare table ---- */

table.compare {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.2rem 0;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
table.compare th, table.compare td {
  text-align: left;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid var(--border);
}
table.compare tr:last-child th, table.compare tr:last-child td { border-bottom: none; }
table.compare th {
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.8rem;
  background: var(--blue-soft-bg);
  width: 34%;
}

/* ---- provider / guide cards ---- */

.provider-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 0.9rem;
  margin-top: 1.2rem;
}
.provider-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  padding: 1.1rem 1.15rem;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.15s ease, transform 0.15s ease;
}
.provider-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
  text-decoration: none;
}
.provider-card .badge { align-self: flex-start; }
.provider-card .pname {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}
.provider-card .ptag {
  font-family: var(--font-body);
  font-size: 0.83rem;
  color: var(--ink-faint);
}

/* ---- article page ---- */

article .updated {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.callout {
  background: var(--card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: 1rem 1.15rem;
  margin: 1.4rem 0;
  font-size: 0.94rem;
}

/* ---- footer ---- */

footer.site {
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding: 1.8rem 0 3rem;
  font-size: 0.8rem;
  color: var(--ink-faint);
}
footer.site a { color: var(--ink-faint); }
footer.site a:hover { color: var(--blue); }
footer.site .foot-links { display: flex; gap: 1.2rem; margin-top: 0.6rem; flex-wrap: wrap; }

/* ---- responsive ---- */

@media (max-width: 600px) {
  h1 { font-size: 1.6rem; }
  header.site .wrap { flex-direction: column; align-items: flex-start; }
}