/* ============================================================
   Personal Academic Website — Ramaele Moshoeshoe
   Style: Clean, minimal, academic
   ============================================================ */

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

:root {
  --navy:   #1a2e4a;
  --blue:   #2563eb;
  --light:  #f0f4f8;
  --border: #d1d9e0;
  --text:   #1f2937;
  --muted:  #6b7280;
  --white:  #ffffff;
  --green:  #16a34a;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Georgia', serif;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
  background: var(--white);
}

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

/* --- Navigation --- */
nav {
  background: var(--navy);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

nav .nav-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

nav .nav-brand {
  color: var(--white);
  font-size: 1rem;
  font-weight: bold;
  font-family: 'Arial', sans-serif;
  letter-spacing: 0.5px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav ul a {
  color: rgba(255,255,255,0.85);
  font-family: 'Arial', sans-serif;
  font-size: 0.9rem;
  letter-spacing: 0.5px;
  transition: color 0.2s;
}

nav ul a:hover, nav ul a.active {
  color: var(--white);
  text-decoration: none;
  border-bottom: 2px solid #60a5fa;
  padding-bottom: 2px;
}

/* --- Page Layout --- */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* --- Hero / Profile Section --- */
.hero {
  display: flex;
  gap: 2.5rem;
  align-items: flex-start;
  margin-bottom: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-text h1 {
  font-size: 2rem;
  color: var(--navy);
  font-family: 'Arial', sans-serif;
  margin-bottom: 0.3rem;
}

.hero-text .title {
  font-size: 1rem;
  color: var(--blue);
  font-family: 'Arial', sans-serif;
  font-weight: bold;
  margin-bottom: 0.8rem;
}

.hero-text .affil {
  font-size: 0.95rem;
  color: var(--muted);
  font-family: 'Arial', sans-serif;
  margin-bottom: 1.2rem;
  line-height: 1.5;
}

/* Social links */
.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.82rem;
  font-family: 'Arial', sans-serif;
  color: var(--navy);
  background: var(--light);
  transition: all 0.2s;
}

.social-links a:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
  text-decoration: none;
}

/* --- Section headings --- */
h2.section-title {
  font-size: 1.4rem;
  color: var(--navy);
  font-family: 'Arial', sans-serif;
  border-left: 4px solid var(--blue);
  padding-left: 0.75rem;
  margin-bottom: 1.5rem;
}

h3.sub-title {
  font-size: 1.05rem;
  color: var(--navy);
  font-family: 'Arial', sans-serif;
  margin: 2rem 0 1rem;
}

/* --- Bio / About text --- */
.bio p {
  margin-bottom: 1rem;
  color: var(--text);
}

/* --- Research interests tags --- */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.tag {
  background: #dbeafe;
  color: #1e40af;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.82rem;
  font-family: 'Arial', sans-serif;
}

/* --- Publication cards --- */
.pub-list { list-style: none; }

.pub-item {
  padding: 1.2rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 1rem;
  background: var(--white);
  transition: box-shadow 0.2s;
}

.pub-item:hover { box-shadow: 0 2px 12px rgba(0,0,0,0.08); }

.pub-item .pub-title {
  font-weight: bold;
  color: var(--navy);
  font-size: 0.97rem;
  margin-bottom: 0.3rem;
}

.pub-item .pub-journal {
  font-style: italic;
  color: var(--green);
  font-size: 0.88rem;
  font-family: 'Arial', sans-serif;
}

.pub-item .pub-authors {
  color: var(--muted);
  font-size: 0.85rem;
  font-family: 'Arial', sans-serif;
  margin-top: 0.2rem;
}

.pub-item .pub-meta {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 10px;
  font-size: 0.75rem;
  font-family: 'Arial', sans-serif;
  font-weight: bold;
}

.badge-pub   { background: #dcfce7; color: #15803d; }
.badge-wp    { background: #fef9c3; color: #854d0e; }
.badge-forth { background: #ede9fe; color: #6d28d9; }
.badge-book  { background: #fee2e2; color: #991b1b; }
.badge-media { background: #dbeafe; color: #1d4ed8; }

.pub-link {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 10px;
  font-size: 0.75rem;
  font-family: 'Arial', sans-serif;
  font-weight: bold;
  background: #e0f2fe;
  color: #0369a1;
  text-decoration: none;
}
.pub-link:hover { background: #0369a1; color: var(--white); text-decoration: none; }

.pub-item .pub-title a {
  color: var(--navy);
  text-decoration: none;
}
.pub-item .pub-title a:hover { text-decoration: underline; color: var(--blue); }

/* --- CV timeline --- */
.cv-section { margin-bottom: 2.5rem; }

.cv-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--light);
}

.cv-year {
  font-family: 'Arial', sans-serif;
  font-size: 0.85rem;
  color: var(--muted);
  padding-top: 2px;
}

.cv-detail strong {
  display: block;
  color: var(--navy);
  font-size: 0.95rem;
}

.cv-detail span {
  color: var(--muted);
  font-size: 0.87rem;
  font-family: 'Arial', sans-serif;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.contact-item {
  padding: 1.2rem 1.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--light);
}

.contact-item .label {
  font-family: 'Arial', sans-serif;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  margin-bottom: 0.3rem;
}

.contact-item .value {
  font-size: 0.95rem;
  color: var(--navy);
}

/* --- Footer --- */
footer {
  background: var(--navy);
  color: rgba(255,255,255,0.65);
  text-align: center;
  padding: 1.5rem;
  font-family: 'Arial', sans-serif;
  font-size: 0.82rem;
  margin-top: 4rem;
}

footer a { color: rgba(255,255,255,0.8); }

/* --- Responsive --- */
@media (max-width: 680px) {
  .hero { flex-direction: column; }
  .contact-grid { grid-template-columns: 1fr; }
  .cv-item { grid-template-columns: 1fr; gap: 0.2rem; }
  nav .nav-brand { display: none; }
  nav ul { gap: 1rem; }
}