/* ============================================
   Esra Ataer-Cansizoglu — Personal Site
   Minimalist Academic Design
   ============================================ */

:root {
  --ink: #1a1a18;
  --ink-light: #4a4a44;
  --ink-faint: #9a9a90;
  --paper: #f7f5f0;
  --paper-warm: #eeebe3;
  --accent: #2a4a3e;
  --accent-hover: #1a3a2e;
  --rule: #d8d4c8;
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-mono: 'DM Mono', 'Courier New', monospace;
}

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

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

body {
  font-family: var(--font-serif);
  background-color: var(--paper);
  color: var(--ink);
  line-height: 1.75;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

/* ===== NAVIGATION ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 3rem;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  gap: 2rem;
}

.nav-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 300;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.04em;
  white-space: nowrap;
  flex-shrink: 0;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2.2rem;
  align-items: center;
}

nav ul a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-light);
  text-decoration: none;
  transition: color 0.2s;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
}

nav ul a:hover,
nav ul a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--ink);
  padding: 0.2rem;
}

/* ===== HOME ===== */
.home-main {
  flex: 1;
  display: flex;
  align-items: center;
  padding: 5rem 3rem;
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

.home-grid {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 5rem;
  align-items: center;
  width: 100%;
}

.photo-frame {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid var(--rule);
  background: var(--paper-warm);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.photo-placeholder {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 300;
  color: var(--ink-faint);
  letter-spacing: 0.1em;
}

.photo-frame:not(.no-photo) .photo-placeholder {
  display: none;
}

.home-text-col h1 {
  font-family: var(--font-serif);
  font-size: 3.2rem;
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
}

.home-text-col h1 em {
  font-style: italic;
  color: var(--ink-light);
  font-weight: 300;
}

.tagline {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.6rem;
}

.divider {
  width: 40px;
  height: 1px;
  background: var(--rule);
  margin-bottom: 1.6rem;
}

.bio {
  font-size: 1rem;
  color: var(--ink-light);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 1rem;
}

.bio:last-of-type {
  margin-bottom: 1.8rem;
}

.home-links {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.dot {
  color: var(--rule);
  font-size: 1.2rem;
  line-height: 1;
}

/* ===== LINKS ===== */
a.ext-link,
.bio a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, color 0.2s;
}

a.ext-link:hover,
.bio a:hover {
  color: var(--accent-hover);
  border-bottom-color: var(--accent-hover);
}

/* ===== PAGE LAYOUT ===== */
.page-main {
  flex: 1;
  padding: 4rem 3rem 5rem;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}

.page-title {
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 300;
  letter-spacing: -0.01em;
  margin-bottom: 2.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
}

/* ===== PUBLICATIONS ===== */
.pub-profiles {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 3rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.pub-section {
  margin-bottom: 3rem;
}

.pub-category {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
}

.pub-list {
  list-style: none;
  counter-reset: pub-counter;
  padding: 0;
}

.pub-list li {
  counter-increment: pub-counter;
  display: grid;
  grid-template-columns: 2ch 1fr;
  gap: 0.6rem 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--paper-warm);
  align-items: start;
  transition: background 0.15s;
}

.pub-list li::before {
  content: counter(pub-counter);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink-faint);
  padding-top: 0.22rem;
  text-align: right;
}

.pub-list li a {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--accent);
  text-decoration: none;
  line-height: 1.5;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
  display: block;
}

.pub-list li a:hover {
  border-bottom-color: var(--accent);
}

.pub-meta {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.82rem;
  color: var(--ink-faint);
  line-height: 1.5;
  margin-top: 0.25rem;
  grid-column: 2;
}

.pub-meta em {
  font-style: italic;
}

/* ===== NEWS ===== */
.news-list {
  list-style: none;
  padding: 0;
}

.news-list li {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 1rem 2rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--paper-warm);
  align-items: start;
}

.news-date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  padding-top: 0.25rem;
  text-align: right;
}

.news-text {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink-light);
  line-height: 1.7;
}

/* ===== CV ===== */
.cv-text {
  font-size: 1.1rem;
  color: var(--ink-light);
  margin-bottom: 1rem;
}

.cv-note {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-faint);
  background: var(--paper-warm);
  padding: 0.8rem 1.2rem;
  border-left: 2px solid var(--rule);
  line-height: 1.6;
}

.cv-note code {
  background: transparent;
  font-family: inherit;
  font-weight: 400;
}

/* ===== CONTACT ===== */
.contact-block {
  margin-top: 0.5rem;
}

.contact-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--paper-warm);
  align-items: baseline;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.contact-value {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink-light);
}

/* ===== RESEARCH ===== */
.research-section {
  margin-bottom: 3rem;
}

.research-category {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 400;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--rule);
}

.research-item {
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--paper-warm);
}

.research-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 0.25rem;
}

.research-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  margin-bottom: 0.75rem;
}

.research-item p {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--ink-light);
  line-height: 1.8;
}

.research-img-top {
  display: block;
  width: 300px;
  max-width: 100%;
  height: 200px;
  object-fit: contain;
  object-position: left center;
  border: 1px solid var(--rule);
  border-radius: 2px;
  margin: 0.8rem 0 1rem 0;
  background: var(--paper-warm);
}

.research-img-row {
  display: flex;
  gap: 1rem;
  margin: 0.8rem 0 1rem 0;
}

.research-img-row .research-img-top {
  margin: 0;
  width: 200px;
  height: 160px;
}

@media (max-width: 480px) {
  .research-img-row {
    flex-direction: column;
  }

  .research-img-row .research-img-top {
    width: 100%;
    height: 160px;
  }
}

.research-videos {
  display: flex;
  gap: 1rem;
  margin-top: 1.2rem;
  flex-wrap: wrap;
}

.research-videos iframe {
  flex: 1;
  min-width: 200px;
  aspect-ratio: 16 / 9;
  height: auto;
  border: 1px solid var(--rule);
  border-radius: 2px;
}

@media (max-width: 768px) {
  .research-videos iframe {
    min-width: 100%;
  }
}




/* ===== FOOTER ===== */
footer {
  padding: 1.5rem 3rem;
  border-top: 1px solid var(--rule);
  text-align: center;
}

footer p {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  nav {
    padding: 1rem 1.5rem;
    flex-wrap: wrap;
  }

  nav ul {
    display: none;
    flex-direction: column;
    gap: 1.2rem;
    width: 100%;
    padding: 1.2rem 0;
    align-items: flex-start;
  }

  nav ul.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .home-main {
    padding: 3rem 1.5rem;
    align-items: flex-start;
  }

  .home-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .photo-frame {
    width: 160px;
    height: 160px;
  }

  .home-text-col h1 {
    font-size: 2.4rem;
  }

  .page-main {
    padding: 2.5rem 1.5rem 4rem;
  }

  .page-title {
    font-size: 2rem;
  }

  .news-list li {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .news-date {
    text-align: left;
  }

  .contact-row {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .pub-list li {
    grid-template-columns: 1fr;
  }

  .pub-list li::before {
    text-align: left;
  }

  footer {
    padding: 1.2rem 1.5rem;
  }
}