/* ── Reset & Base ────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --ink: #1a1a1a;
  --ink-light: #3a3a3a;
  --cream: #faf9f7;
  --white: #ffffff;
  --red: #c62828;
  --red-dark: #a31f1f;
  --gray: #6b6b6b;
  --gray-light: #e8e6e3;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--ink);
  line-height: 1.65;
  background: var(--white);
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2 {
  font-family: 'Playfair Display', Georgia, 'Times New Roman', serif;
  line-height: 1.2;
}

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  background: var(--ink);
  color: var(--cream);
  padding: 80px 0 72px;
}

.hero h1 {
  font-size: 2.6rem;
  color: var(--white);
  margin-bottom: 28px;
  letter-spacing: -0.02em;
}

.hero-sub {
  font-size: 1.05rem;
  color: #c4c0ba;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-sub em {
  color: var(--white);
  font-style: italic;
}

/* ── Signup Box ──────────────────────────────────────────── */
.signup-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 32px;
}

.signup-label {
  font-size: 0.95rem;
  color: #d4d0ca;
  margin-bottom: 20px;
  line-height: 1.6;
}

.btn-signup {
  display: inline-block;
  padding: 16px 40px;
  font-size: 1.1rem;
  font-family: inherit;
  font-weight: 600;
  background: var(--red);
  color: var(--white);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
  margin-bottom: 14px;
}

.btn-signup:hover {
  background: var(--red-dark);
}

.signup-note {
  font-size: 0.8rem;
  color: #777;
  line-height: 1.5;
}

/* ── About ───────────────────────────────────────────────── */
.about {
  padding: 80px 0;
  background: var(--white);
}

.about h2 {
  font-size: 2rem;
  margin-bottom: 24px;
  color: var(--ink);
}

.about p {
  color: var(--ink-light);
  margin-bottom: 18px;
}

.about p:last-child {
  margin-bottom: 0;
}

/* ── Book ────────────────────────────────────────────────── */
.book {
  padding: 80px 0;
  background: var(--cream);
}

.book .container {
  max-width: 860px;
}

.book-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 48px;
  align-items: start;
}

.book-cover img {
  width: 260px;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.book-text h2 {
  font-size: 1.8rem;
  margin-bottom: 8px;
  color: var(--ink);
}

.book-subtitle {
  font-size: 0.9rem;
  color: var(--gray);
  margin-bottom: 24px;
  font-style: italic;
  line-height: 1.6;
}

.book-text p {
  color: var(--ink-light);
  margin-bottom: 16px;
}

.btn-amazon {
  display: inline-block;
  margin-top: 12px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--white);
  background: var(--ink);
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.2s;
}

.btn-amazon:hover {
  background: #333;
}

/* ── Connect ─────────────────────────────────────────────── */
.connect {
  padding: 80px 0;
  background: var(--white);
  text-align: center;
}

.connect h2 {
  font-size: 2rem;
  margin-bottom: 20px;
}

.connect p {
  color: var(--ink-light);
  max-width: 560px;
  margin: 0 auto 28px;
}

.email-link {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--red);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.email-link:hover {
  border-bottom-color: var(--red);
}

/* ── Footer ──────────────────────────────────────────────── */
footer {
  padding: 32px 0;
  background: var(--ink);
  text-align: center;
}

footer p {
  font-size: 0.85rem;
  color: #777;
}

/* ── Mobile ──────────────────────────────────────────────── */
@media (max-width: 680px) {
  html { font-size: 16px; }

  .hero { padding: 56px 0 52px; }
  .hero h1 { font-size: 2rem; }

  .signup-box { padding: 24px; }
  .btn-signup { width: 100%; text-align: center; }

  .about, .book, .connect { padding: 56px 0; }

  .book-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .book-cover { display: flex; justify-content: center; }
  .book-cover img { width: 200px; }

  .btn-amazon { width: 100%; text-align: center; }
}