:root {
  --color-bg-deep: #0A0A0F;
  --color-bg-surface: #111118;
  --color-bg-raised: #1A1A24;
  --color-border: #2A2A38;
  --color-border-glow: #7C3AED44;

  --color-primary: #7C3AED;
  --color-primary-hover: #6D28D9;
  --color-primary-light: #A78BFA;
  --color-accent-blue: #2563EB;
  --color-accent-green: #16A34A;

  --color-text-primary: #F9FAFB;
  --color-text-secondary: #9CA3AF;
  --color-text-muted: #6B7280;

  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 0 1px var(--color-border-glow), 0 15px 40px rgba(124, 58, 237, 0.25);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% -10%, #1b1130 0%, transparent 70%),
              radial-gradient(900px 500px at 100% 0%, #0c1a3a 0%, transparent 65%),
              var(--color-bg-deep);
  color: var(--color-text-primary);
  line-height: 1.65;
}

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

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.section {
  padding: 5rem 0;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.badge-purple {
  background: #2b1a44;
  color: var(--color-primary-light);
  border-color: #3a2660;
}

.badge-green {
  background: #11301f;
  color: #86efac;
  border-color: #1d4a2c;
}

.badge-gray {
  background: #1f1f2b;
  color: var(--color-text-muted);
  border-color: #2a2a38;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.4rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 10px 20px rgba(124, 58, 237, 0.35);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
}

.btn-ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

.btn-ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.btn-installed {
  background: #16A34A; color: #fff; cursor: default; pointer-events: none;
}

.btn-pro {
  background: #2563EB; color: #fff; cursor: default; pointer-events: none;
}

.btn-lg {
  padding: 1rem 1.8rem;
  font-size: 1rem;
}

.card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 1.25rem;
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
}

.card-glow {
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

.feature-list {
  list-style: none;
  display: grid;
  gap: 0.6rem;
  margin-top: 1rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--color-text-secondary);
}

.feature-list li::before {
  content: '✔';
  position: absolute;
  left: 0;
  color: var(--color-accent-green);
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: rgba(10, 10, 15, 0.85);
  border-bottom: 1px solid rgba(42, 42, 56, 0.6);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.nav-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  font-size: 1.1rem;
}

.nav-logo-icon {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 0.25rem;
  flex-shrink: 0;
}

.nav-logo span {
  color: var(--color-primary);
}


.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  color: var(--color-text-secondary);
}

.nav-actions {
  display: flex;
  gap: 0.75rem;
}

.nav-hamburger {
  display: none;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 0.75rem;
}

.nav-open .nav-links,
.nav-open .nav-actions {
  display: flex;
}

.hero {
  padding-top: 4rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  line-height: 1.1;
  font-weight: 800;
  margin-bottom: 1.25rem;
}

.hero p {
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.microcopy {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.browser-mock {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: 1.5rem;
  padding: 1.5rem;
  min-height: 320px;
  position: relative;
  box-shadow: var(--shadow-soft);
}

.browser-header {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.browser-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #2a2a38;
}

.mock-panel {
  background: #0f0f19;
  border: 1px solid #2a2a38;
  border-radius: 1rem;
  padding: 1rem;
  display: grid;
  gap: 0.75rem;
}

.mock-tabs {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.mock-tab {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  background: #1a1a24;
  color: var(--color-text-secondary);
  border: 1px solid #2a2a38;
}

.mock-tab.active {
  background: var(--color-primary);
  color: white;
  border-color: transparent;
}

.demo-panel {
  gap: 0.9rem;
}

.demo-platforms {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.demo-flow {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.demo-platform-chip {
  border: 1px solid var(--color-border);
  background: #1a1a24;
  color: var(--color-text-secondary);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.demo-platform-chip.active {
  border-color: var(--color-primary);
  color: #fff;
  background: #2e1b4f;
}

.demo-stage {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.9rem;
  padding: 0.85rem 1rem;
}

.demo-label {
  color: var(--color-text-muted);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.demo-draft {
  margin-top: 0.45rem;
  color: var(--color-text-primary);
  font-size: 0.95rem;
  line-height: 1.55;
}

.demo-post {
  margin-top: 0.45rem;
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  line-height: 1.55;
}

.demo-enhance-btn {
  justify-self: flex-start;
  padding: 0.7rem 1.1rem;
}

.demo-result {
  display: grid;
  gap: 0.75rem;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transform: translateY(8px);
  pointer-events: none;
  transition: max-height 0.35s ease, opacity 0.28s ease, transform 0.3s ease;
}

.demo-panel.is-enhanced .demo-result {
  max-height: 420px;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.demo-vibe-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.demo-vibe-pill {
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #191927;
  color: var(--color-text-secondary);
  font-size: 0.8rem;
}

.demo-tone-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.demo-tone-tab {
  border: 1px solid var(--color-border);
  background: #1a1a24;
  color: var(--color-text-secondary);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.demo-tone-tab.active {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  transform: translateY(-1px);
}

.demo-output {
  margin-top: 0;
  padding: 1rem;
}

.demo-use-btn {
  justify-self: flex-end;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-secondary);
  border-radius: 999px;
  padding: 0.4rem 0.8rem;
  font-size: 0.82rem;
  cursor: pointer;
}

.demo-use-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
}

.stat-bar {
  background: var(--color-bg-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem 0;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  text-align: center;
}

.stat-number {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary-light);
}

.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  line-height: 1.2;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.section-sub {
  color: var(--color-text-secondary);
  margin-bottom: 2rem;
}

.mode-bar {
  height: 4px;
  border-radius: 999px;
  margin-bottom: 1rem;
}

.mode-enhance { background: var(--color-primary); }
.mode-refine { background: var(--color-accent-blue); }
.mode-draft { background: #4b5563; }

.tone-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tone-card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.tone-card.active {
  border-color: var(--color-primary);
  color: var(--color-primary-light);
  transform: translateY(-1px);
}

.tone-preview {
  margin-top: 1rem;
  padding: 1.25rem;
  border-radius: 1rem;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.platform-card {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 1.25rem;
  display: grid;
  gap: 0.5rem;
}

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

.billing-toggle {
  display: inline-flex;
  padding: 0.3rem;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  gap: 0.4rem;
}

.billing-option {
  padding: 0.45rem 1rem;
  border-radius: 999px;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: 0.9rem;
}

.billing-option.active {
  background: var(--color-primary);
  color: white;
}

.annual-badge {
  display: inline-flex;
  margin-left: 0.5rem;
}

.pricing-grid {
  align-items: start;
}

.pricing-price {
  font-size: 2.4rem;
  font-weight: 800;
}

.price-note {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.faq details {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  padding: 1rem 1.25rem;
}

.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq .chevron {
  transition: transform 0.2s ease;
}

.faq details[open] .chevron {
  transform: rotate(180deg);
}

.cta-banner {
  background: linear-gradient(135deg, #1a1230, #0b1a30);
  border: 1px solid var(--color-border);
  border-radius: 1.5rem;
  padding: 2.5rem;
  text-align: center;
}

.footer {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
}

.footer-links {
  display: grid;
  gap: 0.5rem;
}

.footer-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.footer-chip {
  padding: 0.3rem 0.6rem;
  background: #1a1a24;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8rem;
}

.legal-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}

.legal-page h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 1rem;
}

.legal-page h2 {
  font-size: 1.3rem;
  margin-top: 2rem;
  margin-bottom: 0.6rem;
}

.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
}

.table th,
.table td {
  border: 1px solid var(--color-border);
  padding: 0.75rem;
  text-align: left;
}

.table th {
  background: var(--color-bg-raised);
  color: var(--color-text-primary);
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .grid-2,
  .grid-3,
  .grid-4,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .nav-links,
  .nav-actions {
    display: none;
  }

  .nav-open .nav-links,
  .nav-open .nav-actions {
    display: grid;
    gap: 0.75rem;
    margin-top: 1rem;
  }

  .nav-inner {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-hamburger {
    display: inline-flex;
    align-self: flex-end;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 3rem 0;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .cta-banner {
    padding: 2rem 1.5rem;
  }
}