:root {
  --bg: #f4f6f3;
  --bg-alt: #e7ede8;
  --surface: #ffffff;
  --ink: #13211a;
  --ink-muted: #44534a;
  --brand: #0f766e;
  --brand-strong: #0a5954;
  --accent: #d97706;
  --accent-strong: #b45309;
  --line: #d2ddd5;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 8px 30px rgba(19, 33, 26, 0.09);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at 10% 0%, #f9faf7 0, var(--bg) 45%, #e9efe9 100%);
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header,
main,
.site-footer {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 0;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  font-weight: 700;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 0.5rem;
  background: linear-gradient(135deg, var(--brand), #18958a);
  color: #fff;
  font-size: 0.9rem;
}

.main-nav {
  display: inline-flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.main-nav a {
  text-decoration: none;
  color: var(--ink-muted);
  font-weight: 500;
}

.main-nav a[aria-current="page"],
.main-nav a:hover {
  color: var(--ink);
}

.btn {
  display: inline-block;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.58rem 1rem;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform 140ms ease, background-color 140ms ease, color 140ms ease, border-color 140ms ease;
}

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

.btn-primary {
  background: var(--brand);
  color: #fff;
}

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

.btn-secondary {
  background: transparent;
  border-color: var(--brand);
  color: var(--brand-strong);
}

.btn-secondary:hover {
  background: rgba(15, 118, 110, 0.08);
}

.btn-accent {
  background: var(--accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--accent-strong);
}

.hero {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 1.2rem;
  align-items: stretch;
}

.hero-content,
.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(1.2rem, 3vw, 2rem);
}

.kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.77rem;
  color: var(--ink-muted);
  margin: 0 0 0.55rem;
  font-weight: 700;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin: 0 0 0.7rem;
}

h1,
h2 {
  font-family: "Spectral", Georgia, serif;
}

h1 {
  font-size: clamp(1.75rem, 2.8vw, 2.8rem);
}

h2 {
  font-size: clamp(1.4rem, 2.2vw, 2rem);
}

.hero-actions,
.contact-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 1rem;
}

.section {
  margin-top: 1.35rem;
  padding: clamp(1.2rem, 3vw, 1.8rem);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.section-alt {
  background: linear-gradient(180deg, #f9fbf9 0%, #f3f7f3 100%);
}

.section-heading p {
  margin: 0 0 0.5rem;
  color: var(--ink-muted);
}

.tabs {
  display: grid;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  gap: 0.5rem;
  margin-top: 1rem;
}

.tab-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius-sm);
  color: var(--ink-muted);
  font: inherit;
  font-weight: 600;
  padding: 0.65rem 0.7rem;
  cursor: pointer;
  text-align: left;
}

.tab-btn.active {
  border-color: var(--brand);
  color: var(--ink);
  background: rgba(15, 118, 110, 0.08);
}

.tab-panels {
  margin-top: 1rem;
}

.tab-panel ul {
  margin-top: 0.4rem;
  padding-left: 1.2rem;
}

.inline-link {
  display: inline-block;
  margin-top: 0.55rem;
  color: var(--brand-strong);
  font-weight: 700;
}

.card-grid,
.bio-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.book-card,
.bio-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 1rem;
  background: #fff;
}

.book-status,
.bio-role {
  color: var(--ink-muted);
  font-size: 0.92rem;
  margin: 0 0 0.4rem;
}

.contact-band {
  background: linear-gradient(135deg, #11291f 0%, #1b4d3c 70%);
  color: #f4f8f4;
}

.contact-band p {
  color: #e3ece4;
  max-width: 70ch;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--ink-muted);
  font-size: 0.92rem;
  padding: 1.2rem 0 2rem;
}

.site-footer a {
  color: inherit;
}

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

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

  .card-grid,
  .bio-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 700px) {
  .site-header {
    flex-wrap: wrap;
  }

  .main-nav {
    order: 3;
    width: 100%;
  }

  .tabs,
  .card-grid,
  .bio-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    width: fit-content;
  }
}