/* THE DIAGNOSTICIAN — author website
   thomaspowellmdcmio.com — three-page literary clinical nonfiction site */

:root {
  --navy: #0D1B3E;
  --deep-navy: #08122A;
  --gold: #C9A02C;
  --gold-soft: #B89028;
  --cold-white: #F4F6F8;
  --slate: #5A6E7A;
  --cream: #F8F0DC;
  --max: 1100px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Cormorant Garamond', 'Georgia', serif;
  font-size: 19px;
  line-height: 1.65;
  color: var(--cold-white);
  background: var(--deep-navy);
  -webkit-font-smoothing: antialiased;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-family: 'Cinzel', 'Trajan Pro', 'Georgia', serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--gold);
}
h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); line-height: 1.1; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 1rem; }
h3 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--cold-white); letter-spacing: 0.08em; text-transform: uppercase; }

p { margin-bottom: 1.1rem; }

a { color: var(--gold); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--cream); }

em { font-style: italic; color: var(--cream); }

/* ===== Header / Navigation ===== */
header.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 18, 42, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(201, 160, 44, 0.15);
}
.nav-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-brand {
  font-family: 'Cinzel', serif;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}
.nav-links a {
  font-family: 'Cinzel', serif;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cold-white);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--gold);
}

/* ===== Hero ===== */
.hero {
  padding: 5rem 1.5rem 4rem;
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 4rem;
  align-items: center;
  min-height: 70vh;
}
.hero-text h1 {
  margin-bottom: 1rem;
}
.hero-tagline {
  font-style: italic;
  color: var(--cream);
  font-size: 1.25rem;
  margin-bottom: 2rem;
  line-height: 1.4;
}
.hero-photo {
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  background-size: cover;
  background-position: center;
  border-radius: 4px;
  filter: sepia(0.15) saturate(0.85);
  margin: 0 auto;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  font-family: 'Cinzel', serif;
  font-size: 0.82rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--gold);
  color: var(--gold);
  transition: all 0.25s;
  cursor: pointer;
}
.btn:hover {
  background: var(--gold);
  color: var(--navy);
}
.btn-filled {
  background: var(--gold);
  color: var(--navy);
}
.btn-filled:hover {
  background: var(--gold-soft);
  border-color: var(--gold-soft);
}

/* ===== Sections ===== */
section.content {
  padding: 4rem 1.5rem;
  max-width: var(--max);
  margin: 0 auto;
}
section.content.alt {
  background: var(--navy);
  max-width: 100%;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}
section.content.alt > .inner {
  max-width: var(--max);
  margin: 0 auto;
}

/* ===== Book block ===== */
.book-block {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}
.book-cover {
  width: 100%;
  max-width: 320px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
  border-radius: 2px;
}
.book-meta h2 {
  margin-bottom: 0.3rem;
}
.book-subtitle {
  font-style: italic;
  color: var(--cream);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
  line-height: 1.4;
}
.buy-row {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(201, 160, 44, 0.2);
}
.buy-row p { margin-bottom: 0.6rem; font-size: 0.95rem; color: var(--slate); letter-spacing: 0.1em; text-transform: uppercase; }
.buy-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.buy-links a {
  padding: 0.5rem 1rem;
  border: 1px solid rgba(201, 160, 44, 0.4);
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.buy-links a:hover {
  border-color: var(--gold);
  background: rgba(201, 160, 44, 0.08);
}

/* ===== Endorsement block ===== */
.endorsement {
  border-left: 2px solid var(--gold);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--cream);
}
.endorsement footer {
  margin-top: 0.6rem;
  font-style: normal;
  color: var(--gold);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

/* ===== Engagement cards ===== */
.engagement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
.engagement-card {
  padding: 1.75rem;
  border: 1px solid rgba(201, 160, 44, 0.2);
  background: rgba(13, 27, 62, 0.4);
}
.engagement-card h3 {
  font-family: 'Cinzel', serif;
  color: var(--gold);
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
  letter-spacing: 0.1em;
}
.engagement-card p {
  font-size: 0.95rem;
  margin: 0;
}

/* ===== Newsletter / contact form ===== */
.newsletter {
  text-align: center;
  padding: 4rem 1.5rem;
}
.newsletter form {
  max-width: 500px;
  margin: 1.5rem auto 0;
  display: flex;
  gap: 0.5rem;
}
.newsletter input[type=email] {
  flex: 1;
  padding: 0.85rem 1rem;
  background: rgba(244, 246, 248, 0.05);
  border: 1px solid var(--slate);
  color: var(--cold-white);
  font-family: inherit;
  font-size: 1rem;
}
.newsletter input[type=email]:focus {
  outline: none;
  border-color: var(--gold);
}

.contact-form {
  max-width: 600px;
  margin: 2rem auto 0;
}
.contact-form label {
  display: block;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--slate);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.contact-form input,
.contact-form textarea {
  display: block;
  width: 100%;
  margin-top: 0.4rem;
  padding: 0.75rem 1rem;
  background: rgba(244, 246, 248, 0.05);
  border: 1px solid var(--slate);
  color: var(--cold-white);
  font-family: inherit;
  font-size: 1rem;
}
.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--gold);
}
.contact-form button {
  margin-top: 1rem;
}

/* ===== Footer ===== */
footer.site-footer {
  border-top: 1px solid rgba(201, 160, 44, 0.15);
  padding: 2.5rem 1.5rem;
  text-align: center;
  color: var(--slate);
  font-size: 0.9rem;
}
footer.site-footer a {
  color: var(--slate);
}
footer.site-footer a:hover { color: var(--gold); }

/* ===== Responsive ===== */
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; gap: 2rem; padding-top: 3rem; min-height: auto; }
  .hero-photo { max-width: 280px; }
  .book-block { grid-template-columns: 1fr; gap: 2rem; }
  .book-cover { max-width: 240px; margin: 0 auto; display: block; }
  .nav-links { gap: 1.2rem; }
  .nav-links a { font-size: 0.7rem; letter-spacing: 0.1em; }
  .newsletter form { flex-direction: column; }
}

@media (max-width: 500px) {
  body { font-size: 17px; }
  .nav-brand { font-size: 0.85rem; }
  .nav-links { gap: 0.8rem; }
  .nav-links a { font-size: 0.65rem; letter-spacing: 0.05em; }
  section.content { padding: 3rem 1rem; }
  .hero { padding: 2rem 1rem 3rem; }
}