/* ===================================================
   Academic Website — Economics PhD Candidate Style
   =================================================== */

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

:root {
  --navy:      #1a2e4a;
  --blue:      #2d6a9f;
  --blue-lt:   #e8f0f8;
  --text:      #1c1c1e;
  --muted:     #5a6478;
  --border:    #dde3ec;
  --bg:        #ffffff;
  --bg-alt:    #f7f9fb;
  --max-w:     980px;
  --font:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

/* --- Layout --- */
.site-wrapper {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Navigation --- */
nav {
  border-bottom: 1px solid var(--border);
  padding: 1.1rem 0;
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  z-index: 100;
}

nav .nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 2rem;
}

nav .site-name {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--navy);
  white-space: nowrap;
  flex-shrink: 0;
}
nav .site-name a { color: inherit; }
nav .site-name a:hover { text-decoration: none; color: var(--blue); }

nav .nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
  margin-left: auto;
}

nav .nav-links a {
  font-size: 1.05rem;
  color: var(--muted);
  font-weight: 450;
  letter-spacing: 0.01em;
}
nav .nav-links a:hover,
nav .nav-links a.active {
  color: var(--blue);
  text-decoration: none;
}
nav .nav-links a.active {
  color: var(--navy);
  font-weight: 550;
}

/* --- Page header --- */
.page-header {
  padding: 3.5rem 0 0;
}

/* --- Home page: profile block --- */
.profile {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2.4rem;
  padding: 3.2rem 0 2.8rem;
  align-items: start;
}

.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
  display: block;
}

.profile-photo {
  width: 320px;
  height: 400px;
  background: var(--blue-lt);
  border: 1px solid var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
  line-height: 1.4;
  flex-shrink: 0;
}

.profile-info h1 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.2;
  margin-bottom: 0.25rem;
}

.profile-info .affiliation {
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 1.2rem;
}

.profile-info p {
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 0.85rem;
}

.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.4rem;
}

.profile-links a {
  font-size: 0.83rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.28rem 0.7rem;
  color: var(--blue);
  background: var(--bg-alt);
  transition: border-color 0.15s, background 0.15s;
}
.profile-links a:hover {
  border-color: var(--blue);
  background: var(--blue-lt);
  text-decoration: none;
}

/* --- Fields of interest --- */
.fields {
  border-top: 1px solid var(--border);
  padding: 1.6rem 0;
  font-size: 0.9rem;
  color: var(--muted);
}
.fields strong { color: var(--text); }

/* --- Contact block on home --- */
.contact-block {
  padding: 1.4rem 0 3rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.contact-block a { color: var(--blue); }

/* --- Section headings --- */
h2.section-title {
  font-size: 1.05rem;
  font-weight: 650;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--navy);
  margin-bottom: 1.6rem;
}

/* --- Paper list --- */
.paper-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding-bottom: 3rem;
}

.paper-item {}

.paper-item .paper-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--bg);
  background: var(--blue);
  border-radius: 2px;
  padding: 0.12rem 0.5rem;
  margin-bottom: 0.45rem;
}

.paper-item .paper-tag.jmp {
  background: var(--navy);
}

.paper-item .paper-tag.pub {
  background: #2a7a4b;
}

.paper-item h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.35;
  margin-bottom: 0.2rem;
}
.paper-item h3 a { color: inherit; }
.paper-item h3 a:hover { color: var(--blue); text-decoration: none; }

.paper-item .paper-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.55rem;
}
.paper-item .paper-meta em { font-style: italic; }

.paper-item .paper-abstract {
  font-size: 0.88rem;
  color: var(--text);
  line-height: 1.65;
}

.paper-item .paper-links {
  margin-top: 0.55rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  font-size: 0.83rem;
}
.paper-item .paper-links a {
  color: var(--blue);
}

/* --- Work in progress section --- */
.wip-list {
  list-style: none;
  padding-bottom: 3rem;
}
.wip-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.93rem;
  color: var(--text);
}
.wip-list li:last-child { border-bottom: none; }
.wip-list .wip-coauthors {
  font-size: 0.83rem;
  color: var(--muted);
  margin-left: 0.5rem;
}

/* --- Teaching table --- */
.teaching-section {
  padding-bottom: 3rem;
}
.teaching-section p.role-note {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 1.2rem;
}

.course-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.course-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.course-item:last-child { border-bottom: none; }
.course-item .course-name {
  font-size: 0.93rem;
  font-weight: 550;
  color: var(--text);
}
.course-item .course-detail {
  font-size: 0.83rem;
  color: var(--muted);
  margin-top: 0.15rem;
}
.course-item .course-terms {
  font-size: 0.83rem;
  color: var(--muted);
  text-align: right;
  white-space: nowrap;
}

/* --- CV page --- */
.cv-section {
  padding-bottom: 3rem;
}
.cv-download-bar {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.2rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.cv-download-bar a {
  white-space: nowrap;
  font-weight: 550;
}

.cv-block {
  margin-bottom: 2.2rem;
}
.cv-block h3 {
  font-size: 0.85rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.8rem;
}
.cv-entry {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.cv-entry:last-child { border-bottom: none; }
.cv-entry .cv-title { font-weight: 500; color: var(--text); }
.cv-entry .cv-sub { font-size: 0.83rem; color: var(--muted); margin-top: 0.1rem; }
.cv-entry .cv-year { color: var(--muted); font-size: 0.85rem; white-space: nowrap; }

/* --- Footer --- */
footer {
  border-top: 1px solid var(--border);
  padding: 1.8rem 0;
  margin-top: 2rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--muted);
}

/* --- Responsive --- */
@media (max-width: 600px) {
  .profile {
    grid-template-columns: 1fr;
  }
  .profile-photo {
    width: 80px;
    height: 100px;
  }
  nav .nav-links {
    gap: 1rem;
  }
  .course-item {
    grid-template-columns: 1fr;
  }
  .cv-entry {
    grid-template-columns: 1fr;
  }
  .cv-download-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}