/* Discretica landing site — palette derived from app icon (green gradient, white graph nodes) */
:root {
  --green-900: #073f22;
  --green-800: #0b5c31;
  --green-700: #107a40;
  --green-600: #14934d;
  --green-500: #1aa657;
  --green-100: #d9f2e3;
  --green-50: #f2faf5;
  --ink: #14231b;
  --ink-soft: #3d5347;
  --paper: #ffffff;
  --paper-alt: #f2faf5;
  --line: #d3e6da;
  --accent: #0b5c31;
  --focus: #0b5c31;
  --radius: 14px;
  --maxw: 68rem;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e5f2ea;
    --ink-soft: #a8c4b3;
    --paper: #0d1712;
    --paper-alt: #12211a;
    --line: #24402f;
    --green-100: #16301f;
    --green-50: #101d15;
    --accent: #3ecb7a;
    --focus: #3ecb7a;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--accent); }
a:hover { text-decoration-thickness: 2px; }
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--green-800);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

/* Header / nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
}
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.nav-links {
  display: flex;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}
.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a:hover { color: var(--accent); }
.nav-cta {
  background: var(--green-700);
  color: #fff !important;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  font-weight: 600;
}
.nav-cta:hover { background: var(--green-800); }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.4rem 0.6rem;
  color: var(--ink);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem 1.25rem 1rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 0.65rem 0.25rem; }
  .nav-cta { text-align: center; margin-top: 0.5rem; }
}

/* Hero */
.hero {
  background:
    radial-gradient(ellipse 80% 60% at 70% 0%, var(--green-100), transparent),
    var(--paper-alt);
  border-bottom: 1px solid var(--line);
  padding: 3.5rem 0 3rem;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--green-100);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}
h1 {
  font-size: clamp(1.9rem, 4.5vw, 2.9rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.hero-sub {
  font-size: 1.15rem;
  color: var(--ink-soft);
  margin: 0 0 1.75rem;
  max-width: 34rem;
}
.store-buttons { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--green-900);
  color: #fff;
  text-decoration: none;
  padding: 0.7rem 1.3rem;
  border-radius: 12px;
  border: 1px solid var(--green-800);
  line-height: 1.2;
}
@media (prefers-color-scheme: dark) {
  .store-btn { background: var(--green-100); border-color: var(--green-800); }
}
.store-btn:hover { transform: translateY(-1px); }
.store-btn .store-small { display: block; font-size: 0.68rem; opacity: 0.85; }
.store-btn .store-big { display: block; font-size: 1.05rem; font-weight: 700; }
.store-btn svg { width: 26px; height: 26px; flex: none; }
.hero-note { margin-top: 1rem; font-size: 0.9rem; color: var(--ink-soft); }

/* Hero visual: truth table illustration */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}
.hero-icon {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  box-shadow: 0 12px 32px rgba(7, 63, 34, 0.28);
}
.tt-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  box-shadow: 0 8px 24px rgba(7, 63, 34, 0.10);
}
.tt-card figcaption {
  font-size: 0.8rem;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 0.6rem;
}
.tt-card table {
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 0.95rem;
}
.tt-card th, .tt-card td {
  border: 1px solid var(--line);
  padding: 0.35rem 0.9rem;
  text-align: center;
}
.tt-card th { background: var(--green-100); color: var(--ink); }
.tt-card td.t { color: var(--accent); font-weight: 700; }

/* Sections */
section { padding: 3.5rem 0; }
section:nth-of-type(even) { background: var(--paper-alt); }
h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -0.01em;
  margin: 0 0 0.75rem;
}
.section-lead {
  color: var(--ink-soft);
  max-width: 44rem;
  margin: 0 0 2rem;
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
@media (max-width: 860px) { .grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .grid-3, .grid-2 { grid-template-columns: 1fr; } }
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.1rem; }
.card p { margin: 0; color: var(--ink-soft); font-size: 0.97rem; }
.card .tool-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  background: var(--green-100);
  border-radius: 6px;
  padding: 0.12rem 0.5rem;
  margin-bottom: 0.6rem;
}
ul.checks { list-style: none; padding: 0; margin: 0; }
ul.checks li {
  padding-left: 1.7rem;
  position: relative;
  margin-bottom: 0.7rem;
  color: var(--ink-soft);
}
ul.checks li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
ul.checks li strong { color: var(--ink); }

/* Pricing */
.pricing-cards { align-items: stretch; }
.pricing-cards .card.highlight { border-color: var(--green-600); border-width: 2px; }
.price-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 0.4rem;
}
.card ul { margin: 0.6rem 0 0; padding-left: 1.2rem; color: var(--ink-soft); font-size: 0.95rem; }
.card ul li { margin-bottom: 0.35rem; }

/* FAQ accordion */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:first-of-type { border-top: 1px solid var(--line); }
.faq-q {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  background: none;
  border: none;
  text-align: left;
  font: inherit;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--ink);
  padding: 1.1rem 0.25rem;
  cursor: pointer;
}
.faq-q .chev { transition: transform 0.2s ease; color: var(--accent); flex: none; }
.faq-q[aria-expanded="true"] .chev { transform: rotate(180deg); }
.faq-a { padding: 0 0.25rem 1.2rem; color: var(--ink-soft); max-width: 46rem; }
.faq-a[hidden] { display: none; }

/* Guides listing */
.guide-card { text-decoration: none; display: block; transition: border-color 0.15s ease; }
.guide-card:hover { border-color: var(--green-600); }
.guide-card h3 { color: var(--ink); }
.guide-card .read-more { color: var(--accent); font-weight: 600; font-size: 0.9rem; margin-top: 0.7rem; display: inline-block; }

/* Footer */
.site-footer {
  background: var(--green-900);
  color: #cfe8d9;
  padding: 3rem 0 2rem;
  font-size: 0.95rem;
}
.site-footer a { color: #fff; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h3 { color: #fff; font-size: 1rem; margin: 0 0 0.75rem; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1.25rem;
  font-size: 0.85rem;
  color: #a8cbb7;
}

/* Guide article pages */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--ink-soft);
  padding: 1rem 0 0;
}
.breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0; padding: 0; }
.breadcrumb li + li::before { content: "›"; margin-right: 0.4rem; color: var(--ink-soft); }
article.guide { max-width: 46rem; margin: 0 auto; padding: 1.5rem 1.25rem 3.5rem; }
article.guide h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); margin-top: 0.75rem; }
article.guide h2 { font-size: 1.45rem; margin-top: 2.2rem; }
article.guide h3 { font-size: 1.15rem; margin-top: 1.6rem; }
article.guide .meta { color: var(--ink-soft); font-size: 0.9rem; margin-bottom: 1.5rem; }
article.guide table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.95rem;
  margin: 1.25rem 0;
}
article.guide th, article.guide td {
  border: 1px solid var(--line);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
article.guide th { background: var(--green-100); }
article.guide code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--green-50);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.1em 0.35em;
}
article.guide blockquote {
  border-left: 4px solid var(--green-600);
  margin: 1.25rem 0;
  padding: 0.5rem 0 0.5rem 1.1rem;
  color: var(--ink-soft);
  background: var(--green-50);
  border-radius: 0 8px 8px 0;
}
.app-callout {
  background: var(--green-50);
  border: 1px solid var(--green-600);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin: 2rem 0;
}
.app-callout h2, .app-callout h3 { margin-top: 0; }
.table-scroll { overflow-x: auto; }
.related-guides { border-top: 1px solid var(--line); margin-top: 2.5rem; padding-top: 1.5rem; }
.related-guides ul { padding-left: 1.2rem; }