/* ThanksBill website — clean-theme design system.
   Ported from the "theme-clean" marketing design. Single theme (blue),
   aligned with the app brand. Marketing components (feature cards, stats,
   comparison, journey, pricing, FAQ, contact) live alongside the generic
   content-page classes used by feature/blog/legal/demo pages. */

:root {
  --bg-page: oklch(0.985 0.004 250);
  --bg-card: oklch(0.995 0.002 250);
  --bg-hero: oklch(0.96 0.02 250);
  --bg-hover: oklch(0.95 0.01 250);
  --text: oklch(0.22 0.015 255);
  --text-sub: oklch(0.42 0.02 255);
  --accent: oklch(0.52 0.16 255);
  --accent-shadow: oklch(0.52 0.16 255 / 0.35);
  --on-accent: oklch(0.99 0 0);
  --border: oklch(0.9 0.008 255);
  --border-strong: oklch(0.75 0.02 255);
  --radius: 12px;
  --btn-radius: 8px;
  --shadow: 0 1px 2px rgba(20, 30, 60, .04);
  --stripe-a: oklch(0.93 0.015 255);
  --stripe-b: oklch(0.97 0.008 255);
  --stripe-text: oklch(0.5 0.03 255);
  --font-head: system-ui, Helvetica, Arial, sans-serif;
  --font-body: system-ui, Helvetica, Arial, sans-serif;

  /* Legacy aliases so content pages / forms keep working. */
  --primary: var(--accent);
  --primary-deep: var(--accent);
  --muted: var(--text-sub);
  --ink: var(--text);
  --bg: var(--bg-card);
  --bg-soft: var(--bg-hero);
  --line: var(--border);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  color: var(--text);
  background: var(--bg-page);
  font-family: var(--font-body);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

/* ---------- Layout shell ---------- */

.site-main { display: block; }

/* Marketing stack: centered column of cards. */
.stack {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 22px 32px 0;
}

/* Content pages (feature/blog/legal/demo/about) keep a narrower column. */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ---------- Topbar ---------- */

.site-header { background: var(--bg-page); }
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1240px;
  margin: 0 auto;
  padding: 22px 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  font: 700 18px/1 var(--font-head);
  color: var(--text);
}
.logo img { display: block; }
.navlinks {
  display: flex;
  gap: 28px;
  font: 500 14px/1 var(--font-body);
  color: var(--text-sub);
}
.nav-cta {
  font: 600 14px/1 var(--font-body);
  padding: 11px 20px;
  border-radius: var(--btn-radius);
  background: var(--accent);
  color: var(--on-accent);
  white-space: nowrap;
  transition: box-shadow .15s ease, transform .15s ease;
}
.nav-cta:hover { color: var(--on-accent); transform: translateY(-1px); box-shadow: 0 6px 16px var(--accent-shadow); }

/* Features dropdown (desktop hover/focus; nav is hidden on mobile) */
.nav-dropdown { position: relative; }
.nav-dropdown-label { cursor: pointer; color: var(--text-sub); }
.nav-dropdown:hover .nav-dropdown-label,
.nav-dropdown:focus-within .nav-dropdown-label { color: var(--accent); }
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 12px;
  flex-direction: column;
  gap: 2px;
  min-width: 190px;
  padding: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(20, 30, 60, .10);
  z-index: 20;
}
/* Invisible bridge so the menu stays open while crossing the gap. */
.nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu { display: flex; }
.nav-dropdown-menu a {
  padding: 8px 12px;
  border-radius: 6px;
  font: 500 14px/1.2 var(--font-body);
  color: var(--text);
  white-space: nowrap;
}
.nav-dropdown-menu a:hover { background: var(--bg-hover); color: var(--accent); }

/* ---------- Buttons (whole site) ---------- */

.btn-primary, .btn-secondary {
  display: inline-block;
  font: 600 14px/1 var(--font-body);
  padding: 13px 22px;
  border-radius: var(--btn-radius);
  cursor: pointer;
  border: 1px solid transparent;
  text-align: center;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn-primary { background: var(--accent); color: var(--on-accent); }
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px var(--accent-shadow);
  color: var(--on-accent);
}
.btn-secondary { background: transparent; color: var(--text); border-color: var(--border-strong); }
.btn-secondary:hover { transform: translateY(-1px); background: var(--bg-hover); }

/* ---------- Section title ---------- */

.section-title {
  margin: 0 0 28px;
  font: 700 28px/1.25 var(--font-head);
  color: var(--text);
  text-align: center;
}
/* When a subtitle follows the title, tighten the gap between them. */
.section-title.has-sub { margin-bottom: 8px; }

/* ---------- Page hero (pricing / simple pages) ---------- */

.page-hero {
  padding: 20px 20px 8px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.page-hero h1 { margin: 0; font: 700 40px/1.2 var(--font-head); color: var(--text); }
.page-hero p {
  margin: 0;
  font: 400 17px/1.6 var(--font-body);
  color: var(--text-sub);
  max-width: 560px;
}

/* ---------- Feature / hero card ---------- */

.feature-card {
  display: flex;
  align-items: stretch;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.feature-card.feature-hero { border: none; background: var(--bg-hero); }
.feature-card.rev { flex-direction: row-reverse; }
.card-media { flex: 0 0 46%; min-width: 0; }
.ph-img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  background: repeating-linear-gradient(135deg, var(--stripe-a) 0 14px, var(--stripe-b) 14px 28px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  box-sizing: border-box;
}
.ph-img span { font: 12px/1.5 ui-monospace, Menlo, monospace; color: var(--stripe-text); max-width: 220px; }
.card-shot { width: 100%; height: 100%; object-fit: cover; object-position: left top; display: block; }
.card-body {
  flex: 1 1 54%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
  padding: 48px 52px;
  min-width: 0;
}
.feature-card.feature-hero .card-body { padding: 56px 52px; }
.kicker {
  margin: 0;
  font: 700 12px/1.2 var(--font-body);
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
}
.title-feature { margin: 0; font: 700 28px/1.25 var(--font-head); color: var(--text); }
.title-hero { margin: 0; font: 700 40px/1.2 var(--font-head); color: var(--text); }
.subtitle { margin: 0; font: 400 16px/1.6 var(--font-body); color: var(--text-sub); }
.cta-row { display: flex; gap: 14px; margin-top: 6px; flex-wrap: wrap; }

/* ---------- Stats card ---------- */

.stats-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 36px 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.stat { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 6px; }
.stat-num { margin: 0; font: 700 34px/1.2 var(--font-head); color: var(--accent); }
.stat-label {
  margin: 0;
  font: 500 13px/1.3 var(--font-body);
  letter-spacing: .03em;
  text-transform: uppercase;
  color: var(--text-sub);
}

/* ---------- Comparison card ---------- */

.compare-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px 52px;
}
.compare-head { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 4px; }
.compare-label {
  margin: 0;
  font: 700 12px/1.2 var(--font-body);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-sub);
  padding: 0 4px;
}
.compare-label-after { color: var(--accent); }
.compare-rows { display: flex; flex-direction: column; }
.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 14px 0;
  border-top: 1px solid var(--border);
}
.compare-item {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  font: 400 16px/1.5 var(--font-body);
  color: var(--text);
  padding: 4px;
}
.compare-mark {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 700 12px/1 var(--font-body);
  flex: none;
}
.compare-mark-x { background: var(--bg-hover); color: var(--text-sub); }
.compare-mark-check { background: var(--accent); color: var(--on-accent); }

/* ---------- Journey card ---------- */

.journey-card {
  background: var(--bg-hero);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 56px 52px;
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.journey-copy { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 16px; }
.journey-title { margin: 0; font: 700 32px/1.25 var(--font-head); color: var(--text); }
.journey-sub { margin: 0; font: 400 16px/1.6 var(--font-body); color: var(--text-sub); }
.journey-rail {
  display: flex;
  align-items: flex-start;
  gap: 0;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.rail-step {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 12px;
  min-width: 0;
}
.rail-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--on-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font: 700 15px/1 var(--font-head);
  flex: none;
}
.rail-text { margin: 0; font: 500 14px/1.5 var(--font-body); color: var(--text); }
.rail-line { flex: 0 0 60px; height: 1px; background: var(--border-strong); margin-top: 18px; }

/* ---------- Pricing card (shared: home + pricing page) ---------- */

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px 52px;
}
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.plan {
  border-radius: calc(var(--radius) - 2px);
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: 1px solid var(--border);
}
.plan-premium { border-color: var(--accent); background: var(--bg-hero); }
.plan-name {
  margin: 0;
  font: 700 13px/1.2 var(--font-body);
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.plan-premium .plan-name { color: var(--accent); }
.plan-price { margin: 4px 0 2px; font: 700 36px/1.15 var(--font-head); color: var(--text); }
.plan-price span { font: 500 14px/1 var(--font-body); color: var(--text-sub); }
.plan-list {
  margin: 8px 0 20px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.plan-list li {
  margin: 0;
  padding-left: 26px;
  position: relative;
  font: 400 15px/1.5 var(--font-body);
  color: var(--text);
}
.plan-list li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--accent); font-weight: 700; }
.plan .btn-primary, .plan .btn-secondary { width: 100%; box-sizing: border-box; margin-top: auto; }

/* ---------- FAQ accordion (pricing page) ---------- */

.faq-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px 52px;
}
.faq-list { display: flex; flex-direction: column; }
.faq-card details { border-top: 1px solid var(--border); }
.faq-card details:first-of-type { border-top: none; }
.faq-q {
  width: 100%;
  cursor: pointer;
  padding: 20px 4px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font: 600 16px/1.4 var(--font-body);
  color: var(--text);
  list-style: none;
}
.faq-q::-webkit-details-marker { display: none; }
.faq-mark { flex: none; font: 400 20px/1 var(--font-body); color: var(--text-sub); transition: transform .15s ease; }
.faq-card details[open] .faq-mark { transform: rotate(45deg); }
.faq-a { margin: 0; padding: 0 4px 20px; font: 400 15px/1.6 var(--font-body); color: var(--text-sub); }

/* ---------- Contact card ---------- */

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 40px 52px;
}
.contact-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contact-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  padding: 22px 26px;
  transition: border-color .15s ease, background .15s ease;
}
.contact-item:hover { border-color: var(--accent); background: var(--bg-hover); color: inherit; }
.contact-label {
  font: 700 12px/1.2 var(--font-body);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.contact-value { font: 600 17px/1.3 var(--font-body); color: var(--text); }

/* ---------- Benefits card (feature pages) ---------- */

.benefits-card, .prose-card, .coming-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 44px 52px;
}
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}
.benefit {
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) - 2px);
  padding: 22px 24px;
}
.benefit-title { margin: 0; font: 700 17px/1.3 var(--font-head); color: var(--text); }
.benefit-body { margin: 0; font: 400 15px/1.6 var(--font-body); color: var(--text-sub); }

/* ---------- Prose card (about / legal) ---------- */

.prose-card { max-width: 860px; margin: 0 auto; }
.prose-card > :first-child { margin-top: 0; }
.prose-card > :last-child { margin-bottom: 0; }
.prose-card p { margin: 0 0 1rem; font: 400 16px/1.7 var(--font-body); color: var(--text); }
.prose-card h1 { margin: 0 0 .5rem; font: 700 32px/1.2 var(--font-head); color: var(--text); }
.prose-card h2 { margin: 1.75rem 0 .5rem; font: 700 20px/1.3 var(--font-head); color: var(--text); text-align: left; }
.prose-card h3 { margin: 1.25rem 0 .4rem; font: 700 16px/1.3 var(--font-head); color: var(--text); }
.prose-card a { color: var(--accent); }
.prose-card ul, .prose-card ol { margin: 0 0 1rem; padding-left: 1.4rem; }
.prose-card li { margin-bottom: .4rem; font: 400 16px/1.7 var(--font-body); color: var(--text); }
.prose-card hr { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }

/* ---------- Coming-soon card (blog) ---------- */

.coming-card { text-align: center; }
.coming-card p { margin: 0; font: 400 16px/1.6 var(--font-body); color: var(--text-sub); }

/* ---------- Footer ---------- */

.site-footer { background: var(--bg-page); }
.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 48px 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}
.footer-top { display: flex; gap: 48px; flex-wrap: wrap; justify-content: space-between; }
.footer-brand { max-width: 260px; display: flex; flex-direction: column; gap: 8px; }
.footer-tag { margin: 0; font: 400 14px/1.5 var(--font-body); color: var(--text-sub); }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-heading {
  margin: 0 0 4px;
  font: 700 12px/1.2 var(--font-body);
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-sub);
}
.footer-col a { font: 400 14px/1.6 var(--font-body); color: var(--text); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font: 400 13px/1.5 var(--font-body);
  color: var(--text-sub);
}

/* =========================================================
   Content pages (feature / blog / about / legal / demo)
   ========================================================= */

.container section { padding: 3rem 0; }
.container section > h2 { text-align: center; }

h1 { font-size: 2.4rem; line-height: 1.2; margin: 0 0 .75rem; }
h2 { font-size: 1.7rem; margin: 0 0 1rem; }
h3 { font-size: 1.1rem; margin: 0 0 .4rem; }
p { margin: 0 0 1rem; }

.hero { text-align: center; padding-top: 4rem; }
.hero h1 { font: 700 40px/1.2 var(--font-head); color: var(--text); }
.hero-sub {
  font-size: 1.15rem;
  color: var(--text-sub);
  max-width: 640px;
  margin: 0 auto 1.5rem;
}
.cta-actions { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.cta-note { color: var(--text-sub); font-size: .9rem; margin-top: .75rem; }
.section-sub { color: var(--text-sub); max-width: 640px; margin: 0 auto 1.5rem; text-align: center; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.card-grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 800px;
  margin: 0 auto;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}
.card-link { color: inherit; }
.card-link:hover { border-color: var(--accent); }

.steps { font-size: 1.1rem; max-width: 420px; margin: 0 auto; padding-left: 1.5rem; }
.steps li { margin-bottom: .5rem; }

.guide { text-align: center; }
.guide p { max-width: 640px; margin: 0 auto; color: var(--text-sub); }

.faq { max-width: 720px; margin: 0 auto; }
.faq-item { margin-bottom: 1.25rem; }
.faq-item h3 { color: var(--accent); }

.pricing-teaser { text-align: center; }

.legal { max-width: 720px; margin: 0 auto; }
.legal h1 { font-size: 2rem; margin-bottom: .25rem; }
.legal h2 { text-align: left; font-size: 1.3rem; margin-top: 2rem; }
.legal hr { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0; }
.legal li { margin-bottom: .3rem; }
.legal a { color: var(--accent); }

/* Closing CTA banner (content pages). */
.cta-banner {
  background: var(--bg-hero);
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 3rem 1.25rem;
  margin-top: 2rem;
}
.cta-banner h2 { color: var(--text); }
.cta-banner p { color: var(--text-sub); }

/* Forms */
.demo-form .card { max-width: 620px; margin: 0 auto; padding: 32px 36px; }
.form-field { margin-bottom: 1rem; display: flex; flex-direction: column; }
.form-field label { font-weight: 600; margin-bottom: .3rem; }
.form-field input,
.form-field select,
.form-field textarea {
  padding: .6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
}
.hp-field { display: none; }
.form-error { color: #b92b2b; font-size: .95rem; }
.form-consent { margin-top: .75rem; font-size: .85rem; color: var(--text-sub); }
.form-consent a { color: inherit; text-decoration: underline; }
.form-thanks { max-width: 520px; margin: 0 auto; text-align: center; }

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 760px) {
  .topbar { padding: 16px 20px; }
  .navlinks { display: none; }
}

@media (max-width: 640px) {
  .stack { padding: 14px 16px 0; gap: 14px; }
  .container { padding: 0 16px; }

  .page-hero h1 { font-size: 28px; }
  .page-hero p { font-size: 15px; }
  .section-title { font-size: 20px; margin-bottom: 20px; }

  .feature-card, .feature-card.rev { flex-direction: column; }
  .card-media { width: 100%; }
  .ph-img { min-height: 140px; }
  .card-body { padding: 24px 20px; gap: 10px; }
  .feature-card.feature-hero .card-body { padding: 28px 20px; }
  .title-feature { font-size: 20px; }
  .title-hero { font-size: 24px; }
  .subtitle { font-size: 14px; }
  .cta-row { gap: 8px; }
  .cta-row .btn-primary, .cta-row .btn-secondary { padding: 11px 16px; font-size: 13px; flex: 1; }

  .stats-card { grid-template-columns: 1fr; gap: 16px; padding: 24px 20px; }
  .stat-num { font-size: 26px; }

  .compare-card, .journey-card { padding: 28px 20px; }
  .compare-head, .compare-row { grid-template-columns: 1fr; gap: 6px; }
  .compare-row { padding: 12px 0; }
  .journey-title { font-size: 22px; }
  .journey-sub { font-size: 14px; }
  .journey-rail { flex-direction: column; align-items: stretch; gap: 20px; padding-top: 20px; }
  .rail-line { display: none; }
  .rail-step { align-items: center; }

  .pricing-card, .faq-card, .contact-card,
  .benefits-card, .prose-card, .coming-card { padding: 28px 20px; }
  .pricing-grid { grid-template-columns: 1fr; }
  .contact-row { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: 1fr; }
  .demo-form .card { padding: 24px 20px; }

  .footer-inner { padding: 32px 20px 20px; gap: 24px; }
  .card-grid-2 { grid-template-columns: 1fr; }
  h1 { font-size: 1.8rem; }
  .hero h1 { font-size: 28px; }
}