/* Toon Tone — editorial layout inspired by autoresearch-style landing pages */

:root {
  --bg: #f5f3ff;
  --bg-alt: #ebe6fa;
  --surface: #ffffff;
  --ink: #1a1625;
  --muted: #5a5268;
  --line: #d8cfef;
  --accent: #6b4ee6;
  --accent-soft: rgba(107, 78, 230, 0.14);
  --mono: "IBM Plex Mono", ui-monospace, monospace;
  --sans: "DM Sans", system-ui, -apple-system, sans-serif;
  --max: 52rem;
  --radius: 10px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration: none;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Nav */
.navbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 243, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.nav-logo {
  width: 30px;
  height: auto;
}

.nav-menu {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
  align-items: center;
}

.nav-menu a {
  color: var(--muted);
  font-size: 0.9rem;
  text-decoration: none;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav-menu a:hover {
  color: var(--ink);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ink);
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1rem 1.25rem;
    background: var(--surface);
    border-bottom: 1px solid var(--line);
    gap: 0.75rem;
  }

  .nav-menu.is-open {
    display: flex;
  }
}

/* Doc header */
.doc-kicker {
  padding: 2.5rem 0 1.25rem;
  border-bottom: 1px solid var(--line);
}

.doc-kicker-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: baseline;
  justify-content: space-between;
}

.site-wordmark {
  font-family: var(--mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.doc-tagline {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
}

/* Hero */
.hero {
  padding: 2.75rem 0 3rem;
}

.hero h1 {
  font-size: clamp(1.85rem, 4vw, 2.65rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  max-width: 36ch;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 38ch;
  margin: 0 0 1.75rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  font-family: var(--mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.75rem 1.15rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line);
}

.btn-secondary:hover {
  border-color: var(--ink);
}

.btn-large {
  padding: 0.9rem 1.35rem;
  font-size: 0.85rem;
}

.meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 42rem;
}

.meta-cell {
  background: var(--surface);
  padding: 1rem 1.1rem;
}

.meta-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.meta-value {
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* Sections */
.section {
  padding: 3rem 0;
  border-top: 1px solid var(--line);
}

.section-alt {
  background: var(--bg-alt);
  border-top: 1px solid var(--line);
}

.section-kicker {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 0.5rem;
}

.section-title {
  font-size: clamp(1.35rem, 2.5vw, 1.75rem);
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
  max-width: 28ch;
}

.section-lead {
  color: var(--muted);
  max-width: 48ch;
  margin: 0 0 2rem;
}

.subgrid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .subgrid-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .subgrid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.subcard {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.35rem;
}

.section-alt .subcard {
  background: #f8f6ff;
}

.subcard h3 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.subcard p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* Numbered steps */
.steps-flow {
  display: grid;
  gap: 1rem;
}

.step-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1.25rem;
  align-items: start;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--line);
}

.step-row:last-child {
  border-bottom: none;
}

.step-num {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 600;
  min-width: 2rem;
}

.step-row h3 {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
}

.step-row p {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* Highlight band */
.band {
  background: var(--accent-soft);
  border: 1px solid rgba(107, 78, 230, 0.28);
  border-radius: var(--radius);
  padding: 1.35rem 1.5rem;
  margin-top: 1.5rem;
}

.band p {
  margin: 0;
  color: var(--ink);
  font-size: 0.98rem;
}

/* Deep dive */
.deep-dive {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.5rem;
  padding: 1.25rem 1.35rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.deep-dive h3 {
  margin: 0;
  font-size: 1.05rem;
}

.deep-dive p {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 36ch;
}

/* Community */
.community-wrap {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 720px) {
  .community-wrap {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
}

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 1.25rem 0;
}

.stat {
  min-width: 7rem;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.stat-label {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.community-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

/* FAQ */
.faq-list {
  margin: 0;
}

.faq-item {
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--line);
}

.faq-item:first-child {
  padding-top: 0;
}

.faq-item dt {
  font-weight: 600;
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.faq-item dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
}

/* CTA */
.section-cta {
  text-align: center;
  background: var(--ink);
  color: #f0ebe3;
  border-top: none;
}

.section-cta .section-title,
.section-cta h2 {
  color: #fff;
  margin: 0 auto 0.5rem;
  max-width: 22ch;
}

.section-cta .section-lead,
.section-cta > .container > p {
  color: rgba(240, 235, 227, 0.78);
  margin: 0 auto 1.5rem;
  max-width: 40ch;
}

.section-cta .hero-actions,
.section-cta .hero-cta {
  justify-content: center;
}

.section-cta .btn-primary {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
}

.section-cta .btn-primary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.section-cta .btn-secondary {
  background: transparent;
  color: #f0ebe3;
  border-color: rgba(240, 235, 227, 0.35);
}

.section-cta .btn-secondary:hover {
  border-color: #fff;
  color: #fff;
}

.cta-disclaimer {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: rgba(240, 235, 227, 0.55);
  margin: 1.5rem 0 0;
}

/* Sources / footer */
.sources {
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .sources {
    grid-template-columns: repeat(2, 1fr);
  }
}

.source-card {
  display: block;
  padding: 1rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s;
}

.source-card:hover {
  border-color: var(--ink);
}

.source-card strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.source-card span {
  font-size: 0.85rem;
  color: var(--muted);
}

.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: 1.2fr 1fr 1fr;
  }
}

.footer-logo {
  width: 40px;
  margin-bottom: 0.75rem;
}

.footer-brand p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 32ch;
}

.footer-links h4 {
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin: 0 0 0.65rem;
}

.footer-links ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.4rem;
}

.footer-links a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
}

.footer-links a:hover {
  text-decoration: underline;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--muted);
}

.footer-bottom p {
  margin: 0;
}