/* ==================== Variables ==================== */
:root {
  --bg: #0b0d10;
  --card: #121622;
  --text: #e7ecf3;
  --muted: #a8b3c7;
  --link: #8ab4ff;
}

/* ==================== Base Styles ==================== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ==================== Layout ==================== */
.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 24px;
}

.card {
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 16px;
  padding: 18px;
  margin: 18px 0;
}

.grid {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.panel[hidden] {
  display: none;
}

/* ==================== Header ==================== */
:root {
  /* ...any other vars... */
  --header-img-size: 125px;
}

.header {
  display: grid;
  grid-template-columns: var(--header-img-size) 1fr var(--header-img-size);
  gap: 16px;
  align-items: center;
}

.header-center {
  text-align: center;
}

.header-center .subtitle {
  margin-top: 6px;
}

.header-img {
  width: var(--header-img-size);
  height: var(--header-img-size);
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.subtitle {
  color: var(--muted);
  margin-top: 6px;
}

/* ==================== Tabs Navigation ==================== */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
  justify-content: center;
}

.tab {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  padding: 8px 12px;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.tab:hover {
  border-color: rgba(138, 180, 255, 0.5);
}

.tab[aria-selected="true"] {
  border-color: rgba(138, 180, 255, 0.9);
  background: rgba(138, 180, 255, 0.1);
}

/* ==================== Projects Section ==================== */
.project {
  display: block;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.project:hover {
  border-color: rgba(138, 180, 255, 0.6);
  background: rgba(138, 180, 255, 0.05);
}

.project p {
  color: var(--muted);
  margin: 8px 0 0;
}

/* ==================== About Section ==================== */
.about {
  display: block;
}

#about p {
  text-align: justify;
}

/* ==================== Contact Section ==================== */
#contact p {
  text-align: center;
}

/* ==================== Publications Section ==================== */
.pubs .title {
  font-weight: 600;
}

ul li + li,
ol li + li {
  margin-top: 10px;
}

/* ==================== Presentations Section ==================== */
.talk-title {
  font-weight: 600;
}

.talk-title a {
  color: var(--link);
  text-decoration: underline;
  font-weight: inherit;
}

.talk-title a:hover {
  text-decoration: underline;
}

.talk-meta {
  margin-top: 4px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: baseline;
}

.talk-date {
  margin-left: auto;
  padding: 2px 8px;
  font-size: 0.85em;
  color: var(--muted);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  white-space: nowrap;
}

/* ==================== Footer ==================== */
.foot {
  color: var(--muted);
  padding-bottom: 40px;
  text-align: center;
}

/* ==================== Responsive Design ==================== */
@media (max-width: 720px) {
  .header {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .header-center {
    width: 100%;
  }

  .tabs {
    justify-content: center;
  }
}

@media (max-width: 560px) {
  .headshot {
    width: 160px;
    height: 160px;
  }
}