/* LingFlo Cloudflare Pages styles */
:root {
  color-scheme: light dark;
  --lf-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --lf-bg: #f8fafc;
  --lf-surface: #ffffff;
  --lf-text: #0f172a;
  --lf-muted: #475569;
  --lf-accent: #2563eb;
  --lf-accent-soft: rgba(37, 99, 235, 0.12);
  --lf-border: rgba(15, 23, 42, 0.08);
  --lf-success: #16a34a;
  --lf-warning: #f59e0b;
  --lf-error: #dc2626;
  --lf-radius: 16px;
  --lf-container: min(1080px, 92vw);
  --lf-font-size: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --lf-bg: #0b1120;
    --lf-surface: #111c2f;
    --lf-text: #e2e8f0;
    --lf-muted: #94a3b8;
    --lf-border: rgba(148, 163, 184, 0.12);
    --lf-accent-soft: rgba(37, 99, 235, 0.2);
  }
}

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

html,
body {
  padding: 0;
  margin: 0;
  font-family: var(--lf-font-family);
  font-size: var(--lf-font-size);
  background: var(--lf-bg);
  color: var(--lf-text);
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(248, 250, 252, 0.85);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--lf-border);
}

@media (prefers-color-scheme: dark) {
  header.site-header {
    background: rgba(11, 17, 32, 0.85);
  }
}

.nav-inner {
  width: var(--lf-container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  font-size: 1rem;
}

.brand-logo {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #2563eb 0%, #22d3ee 100%);
  color: #fff;
  font-weight: 700;
}

nav.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

nav.primary-nav a {
  color: var(--lf-muted);
  font-size: 0.95rem;
  font-weight: 500;
}

nav.primary-nav a.active {
  color: var(--lf-text);
  font-weight: 600;
}

.nav-actions.desktop,
.nav-actions.mobile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-actions.mobile {
  display: none;
  margin-top: 2rem;
  width: 100%;
  flex-direction: column;
  align-items: stretch;
}

.nav-actions.mobile .btn {
  width: 100%;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.1rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary {
  background: var(--lf-accent);
  color: #fff;
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.25);
}

.btn-outline {
  border-color: var(--lf-border);
  color: var(--lf-text);
  background: transparent;
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.35);
}

.btn-outline:hover {
  border-color: var(--lf-accent);
  color: var(--lf-accent);
}

.mobile-toggle {
  display: none;
  border: none;
  background: transparent;
  padding: 0.5rem;
  border-radius: 10px;
  border: 1px solid transparent;
}

.mobile-toggle:focus-visible {
  outline: 2px solid var(--lf-accent);
  outline-offset: 2px;
}

.hero {
  padding: 4.5rem 0 4rem;
}

.hero-grid {
  width: var(--lf-container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 3rem;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.8rem 0.35rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--lf-border);
  background: var(--lf-accent-soft);
  color: var(--lf-accent);
  font-weight: 600;
  font-size: 0.85rem;
}

.hero h1 {
  font-size: clamp(2.6rem, 3.2vw, 3.6rem);
  margin: 1.2rem 0;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.hero p {
  font-size: 1.12rem;
  color: var(--lf-muted);
  line-height: 1.65;
  margin-bottom: 1.8rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1.1rem;
}

.metric-card {
  padding: 1rem 1.4rem;
  border-radius: 14px;
  border: 1px solid var(--lf-border);
  background: var(--lf-surface);
}

.metric-card h3 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 700;
}

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

.feature-grid {
  padding: 4rem 0;
}

.section-header {
  width: var(--lf-container);
  margin: 0 auto 2.5rem;
  text-align: center;
}

.section-header h2 {
  font-size: clamp(2.1rem, 3vw, 2.7rem);
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.section-header p {
  color: var(--lf-muted);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto;
}

.cards-3 {
  width: var(--lf-container);
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  border-radius: 18px;
  border: 1px solid var(--lf-border);
  background: var(--lf-surface);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.card h3 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 600;
}

.card p {
  color: var(--lf-muted);
  margin: 0;
}

.card ul {
  padding-left: 1.1rem;
  margin: 0;
  color: var(--lf-muted);
}

.card ul li {
  margin-bottom: 0.45rem;
}

.demo-shell {
  border-radius: 24px;
  border: 1px solid var(--lf-border);
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(14, 116, 144, 0.08));
  padding: 2rem;
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.demo-feed {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.demo-feed button {
  border: none;
  background: rgba(15, 23, 42, 0.06);
  color: inherit;
  font: inherit;
  padding: 0.9rem 1.1rem;
  border-radius: 12px;
  text-align: left;
  transition: background 0.15s ease;
}

.demo-feed button:hover,
.demo-feed button.active {
  background: rgba(37, 99, 235, 0.15);
  color: var(--lf-accent);
}

.demo-panel {
  border-radius: 18px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  background: #fff;
  min-height: 360px;
  padding: 1.6rem;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
  position: relative;
  overflow: hidden;
}

@media (prefers-color-scheme: dark) {
  .demo-panel {
    background: rgba(17, 28, 47, 0.95);
    border-color: rgba(148, 163, 184, 0.18);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.4);
  }
}

.demo-status {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--lf-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.demo-panel h4 {
  margin: 0 0 0.6rem;
  font-size: 1.1rem;
}

.demo-panel .notes {
  margin: 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.demo-panel .note {
  display: grid;
  gap: 0.3rem;
}

.twocol {
  width: var(--lf-container);
  margin: 4rem auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
}

.testimonials {
  background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 52%);
  padding: 4rem 0;
}

.testimonial-grid {
  width: var(--lf-container);
  margin: 0 auto;
  display: grid;
  gap: 1.4rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.testimonial-card {
  border-radius: 18px;
  border: 1px solid var(--lf-border);
  background: var(--lf-surface);
  padding: 1.6rem;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  display: grid;
  gap: 1rem;
}

.testimonial-card span {
  color: var(--lf-muted);
  font-size: 0.9rem;
}

.cta-band {
  background: linear-gradient(135deg, #2563eb, #22d3ee);
  color: #fff;
  border-radius: 26px;
  width: var(--lf-container);
  margin: 4rem auto;
  padding: 2.6rem 3rem;
  display: grid;
  gap: 1.2rem;
}

.cta-band .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

footer.site-footer {
  margin-top: auto;
  background: rgba(15, 23, 42, 0.04);
  padding: 3rem 0 2rem;
}

@media (prefers-color-scheme: dark) {
  footer.site-footer {
    background: rgba(15, 23, 42, 0.35);
  }
}

.footer-inner {
  width: var(--lf-container);
  margin: 0 auto;
  display: grid;
  gap: 2.5rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  justify-content: space-between;
}

.footer-links {
  display: grid;
  gap: 0.35rem;
}

.footer-links a {
  color: var(--lf-muted);
  font-size: 0.95rem;
}

.legal {
  display: flex;
  flex-wrap: wrap;
  gap: 1.4rem;
  font-size: 0.85rem;
  color: var(--lf-muted);
}

.legal a {
  color: inherit;
}

/* Responsive behaviour */
@media (max-width: 960px) {
  nav.primary-nav {
    position: fixed;
    inset: 0 0 0 auto;
    width: min(320px, 84vw);
    background: var(--lf-surface);
    border-left: 1px solid var(--lf-border);
    padding: 5rem 2rem 2rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.25s ease;
  }

  nav.primary-nav.open {
    transform: translateX(0);
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .nav-actions.desktop {
    display: none;
  }

  .nav-actions.mobile {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: 1fr;
  }

  .demo-shell {
    grid-template-columns: 1fr;
  }

  .cards-3 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  }

  .twocol {
    grid-template-columns: 1fr;
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 1;
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Demo textarea */
.demo-input {
  width: 100%;
  margin-top: 1rem;
  display: grid;
  gap: 0.6rem;
}

.demo-input textarea {
  min-height: 120px;
  border: 1px solid var(--lf-border);
  border-radius: 12px;
  padding: 0.75rem;
  font: inherit;
  background: var(--lf-surface);
  color: inherit;
}

.demo-input textarea:focus-visible {
  outline: 2px solid var(--lf-accent);
  outline-offset: 2px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--lf-accent-soft);
  color: var(--lf-accent);
}

.panel-note {
  border-radius: 14px;
  padding: 0.95rem 1.1rem;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: rgba(15, 23, 42, 0.04);
}

@media (prefers-color-scheme: dark) {
  .panel-note {
    border-color: rgba(148, 163, 184, 0.18);
    background: rgba(148, 163, 184, 0.12);
  }
}

.status-log {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 1rem;
  font-size: 0.85rem;
}

.status-log .status {
  padding: 0.45rem 0.65rem;
  border-radius: 10px;
  border: 1px solid var(--lf-border);
  background: var(--lf-surface);
}

.status-log .status.success {
  border-color: rgba(22, 163, 74, 0.35);
  color: var(--lf-success);
}

.status-log .status.warn {
  border-color: rgba(245, 158, 11, 0.35);
  color: var(--lf-warning);
}

.status-log .status.error {
  border-color: rgba(220, 38, 38, 0.35);
  color: var(--lf-error);
}

.share-main {
  width: var(--lf-container);
  margin: 2rem auto 4rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.share-main .result {
  font-family: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
  font-size: 0.85rem;
  background: rgba(15, 23, 42, 0.02);
  border-radius: 12px;
  padding: 1rem;
  border: 1px solid var(--lf-border);
  max-height: 420px;
  overflow: auto;
}