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

:root {
  --black: #0a0a0a;
  --dark: #111111;
  --mid: #1e1e1e;
  --border: #2a2a2a;
  --muted: #888;
  --text: #d8d8d8;
  --white: #f0f0f0;
  --accent: #c8a96e;
  --font-body: 'Inter', sans-serif;
  --font-display: 'Playfair Display', serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2.5rem;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--white);
  letter-spacing: 0.02em;
}

.nav-links { display: flex; gap: 2rem; }
.nav-links a { color: var(--muted); font-size: 0.875rem; font-weight: 400; letter-spacing: 0.03em; }
.nav-links a:hover { color: var(--white); text-decoration: none; }

/* HERO */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 2rem 4rem;
  background: radial-gradient(ellipse at 50% 60%, #1a1508 0%, var(--black) 70%);
}

.hero-inner { max-width: 700px; }

#hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 600;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 1.2rem;
}

.phd { color: var(--accent); }

.tagline {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.65;
}

.hero-links { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* BUTTONS */
.btn {
  display: inline-block;
  padding: 0.65rem 1.6rem;
  background: var(--accent);
  color: var(--black);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border-radius: 3px;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn:hover { opacity: 0.85; text-decoration: none; }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover { background: var(--accent); color: var(--black); opacity: 1; }

/* SECTIONS */
section { padding: 5rem 2rem; }
.section-alt { background: var(--dark); }

.container { max-width: 900px; margin: 0 auto; }

h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.section-intro {
  color: var(--muted);
  margin-bottom: 2.5rem;
  font-size: 0.95rem;
}

/* ABOUT */
#about p { font-size: 1.05rem; max-width: 720px; }

/* FRAMEWORKS */
.framework-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 0.5rem;
}

.framework-card {
  background: var(--mid);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1.75rem;
}

.framework-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.framework-card p { font-size: 0.92rem; color: var(--text); line-height: 1.65; }

/* BOOK */
.book-block {
  background: var(--mid);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  padding: 2rem;
  max-width: 720px;
}

.book-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--white);
  margin-bottom: 0.4rem;
}

.book-status {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.book-block p { font-size: 0.95rem; line-height: 1.7; }

/* TEACHING */
.teaching-grid { display: flex; flex-direction: column; gap: 1.5rem; }

.teaching-item {
  border-left: 2px solid var(--border);
  padding-left: 1.5rem;
}

.teaching-institution {
  font-weight: 600;
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.teaching-role {
  color: var(--accent);
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
}

.teaching-detail { font-size: 0.9rem; color: var(--muted); }

/* CONTACT */
.contact-form { max-width: 600px; margin-top: 0.5rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

input, textarea {
  width: 100%;
  background: var(--mid);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.75rem 1rem;
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
}

input:focus, textarea:focus { border-color: var(--accent); }
input::placeholder, textarea::placeholder { color: var(--muted); }

textarea { display: block; margin-bottom: 1rem; resize: vertical; }

/* FOOTER */
footer {
  background: var(--dark);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}

footer p { font-size: 0.8rem; color: var(--muted); }

/* RESPONSIVE */
@media (max-width: 768px) {
  nav { padding: 0.9rem 1.25rem; }
  .nav-links { display: none; }
  .form-row { grid-template-columns: 1fr; }
  section { padding: 3.5rem 1.25rem; }
  .framework-grid { grid-template-columns: 1fr; }
  #hero h1 { font-size: 2rem; }
  .tagline { font-size: 0.95rem; }
  .hero-links { flex-direction: column; align-items: center; }
  .book-block { padding: 1.25rem; }
}