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

:root {
  --bg: #05050a;
  --bg-alt: #0e0e18;
  --accent: #c47bff;
  --accent-soft: rgba(196, 123, 255, 0.12);
  --accent-strong: #f0c4ff;
  --text: #f8f8ff;
  --muted: #a0a0c0;
  --border-subtle: #26263a;
  --card-bg: #11111f;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.55);
  --radius-lg: 18px;
  --radius-pill: 999px;
  --transition: 180ms ease-out;
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background: radial-gradient(circle at top, #15152a 0, #05050a 55%);
  color: var(--text);
}

body {
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(to bottom, rgba(5,5,10,0.98), rgba(5,5,10,0.85), transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.03);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 16px;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.92rem;
  color: var(--accent-strong);
}

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

nav {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
}

nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

nav a:hover {
  color: var(--accent-strong);
  background: rgba(196, 123, 255, 0.12);
  transform: translateY(-1px);
}

.hero {
  padding: 40px 0 32px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1.1fr);
  gap: 40px;
  align-items: center;
}

.hero-text h1 {
  font-size: clamp(2.2rem, 3vw, 2.9rem);
  line-height: 1.1;
  margin-bottom: 14px;
}

.hero-text p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 32rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 12px;
}

.hero-bullets {
  list-style: none;
  padding: 0;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-bullets li::before {
  content: "• ";
  color: var(--accent);
}

.hero-card {
  background: radial-gradient(circle at top, rgba(196,123,255,0.32), rgba(10,10,22,0.98));
  border-radius: 26px;
  padding: 18px 18px 16px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-soft);
}

.book-mockup {
  display: flex;
  gap: 6px;
  align-items: stretch;
  margin-bottom: 12px;
}

.book-spine {
  width: 18px;
  border-radius: 16px 0 0 16px;
  background: linear-gradient(to bottom, #2c2348, #c47bff);
}

.book-front {
  flex: 1;
  border-radius: 16px;
  background: radial-gradient(circle at top left, #f0c4ff, #222040);
  padding: 14px 14px 10px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.book-title {
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 1.2rem;
  line-height: 1.1;
}

.book-subtitle {
  font-size: 0.78rem;
  margin-top: 8px;
  color: #140c1f;
}

.book-author {
  align-self: flex-end;
  font-size: 0.7rem;
  margin-top: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero-note {
  font-size: 0.85rem;
  color: var(--accent-strong);
  background: rgba(5,5,10,0.62);
  border-radius: 14px;
  padding: 10px 12px;
  border: 1px solid rgba(196,123,255,0.4);
}

.section {
  padding: 32px 0;
}

.section-alt {
  background: radial-gradient(circle at top, rgba(196,123,255,0.08), transparent);
}

.section-highlight {
  background: linear-gradient(135deg, rgba(196,123,255,0.16), rgba(28,19,55,0.9));
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 10px;
}

.section-intro {
  color: var(--muted);
  max-width: 32rem;
}

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.1fr);
  gap: 24px;
  align-items: flex-start;
  max-width: 1100px;
}

.highlight-box {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 12px 28px rgba(0,0,0,0.45);
  font-size: 0.94rem;
}

.highlight-box h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  border: 1px solid var(--border-subtle);
  font-size: 0.95rem;
  box-shadow: 0 14px 28px rgba(0,0,0,0.5);
}

.card h3, .card h2 {
  margin-top: 0;
  margin-bottom: 8px;
}

.author-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 18px 18px 16px;
  border: 1px solid var(--border-subtle);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
}

.author-avatar-placeholder {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: radial-gradient(circle at top, #f0c4ff, #3a265f);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #140c1f;
}

.author-quote {
  font-size: 0.9rem;
  color: var(--accent-strong);
  margin: 0;
}

.newsletter-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1.2fr);
  gap: 24px;
  align-items: center;
}

.newsletter-form {
  background: rgba(5,5,10,0.7);
  border-radius: var(--radius-lg);
  padding: 16px 16px 14px;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow-soft);
}

.newsletter-form label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.newsletter-form input {
  width: 100%;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border-subtle);
  background: rgba(2,2,8,0.9);
  color: var(--text);
  font-size: 0.95rem;
}

.newsletter-form input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.newsletter-form button {
  margin-top: 10px;
}

.form-note {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 8px;
}

.btn {
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  border: none;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), #f0c4ff);
  color: #140c1f;
  font-weight: 600;
  font-size: 0.92rem;
  box-shadow: 0 10px 22px rgba(196,123,255,0.45);
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px rgba(196,123,255,0.55);
  filter: brightness(1.05);
}

.btn-secondary {
  background: rgba(5,5,15,0.9);
  color: var(--accent-strong);
  border: 1px solid rgba(196,123,255,0.7);
  box-shadow: 0 10px 20px rgba(0,0,0,0.65);
}

.btn-secondary:hover {
  background: rgba(15,12,32,0.95);
}

.btn-small {
  padding: 6px 14px;
  font-size: 0.85rem;
  box-shadow: none;
}

.site-footer {
  padding: 20px 0 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
  background: radial-gradient(circle at top, rgba(196,123,255,0.06), rgba(5,5,10,1));
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
}

.footer-text {
  color: var(--muted);
}

.footer-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer-links a:hover {
  color: var(--accent-strong);
}

.text-link {
  color: var(--accent-strong);
  text-decoration: none;
  font-size: 0.95rem;
}

.text-link:hover {
  text-decoration: underline;
}

.checklist {
  list-style: none;
  padding: 0;
}

.checklist li {
  margin-bottom: 4px;
}

.checklist li::before {
  content: "☐ ";
  color: var(--accent);
}

.center-text {
  text-align: center;
  margin-top: 18px;
}

.narrow {
  max-width: 700px;
}

@media (max-width: 840px) {
  .hero-grid,
  .two-col,
  .newsletter-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero-card {
    order: -1;
  }
}

@media (max-width: 620px) {
  nav {
    display: none;
  }
  .hero {
    padding-top: 26px;
  }
  .footer-grid {
    flex-direction: column;
    align-items: flex-start;
  }
}