/* components.css */

/* skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  padding: 0.75rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* navigation */
.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.95rem 0;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.7rem;
  color: var(--text);
  letter-spacing: -0.02em;
  text-decoration: none;
  flex-wrap: wrap;
}

.brand-name {
  font-weight: 800;
}

.brand-affiliation {
  font-weight: 300;
  color: var(--muted);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

nav a {
  color: var(--muted);
  font-weight: 500;
}

nav a:hover,
nav a:focus-visible {
  color: var(--text);
}

/* banner card */
.banner-card {
  position: relative;
  width: 100%;
  border-radius: 30px;
  overflow: hidden;
  border: 1px solid rgba(217, 226, 236, 0.95);
  box-shadow: var(--shadow-lg);
}

.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom,
      rgba(8, 12, 18, 0.01) 0%,
      rgba(8, 12, 18, 0.02) 35%,
      rgba(8, 12, 18, 0.06) 50%,
      rgba(8, 12, 18, 0.20) 64%,
      rgba(8, 12, 18, 0.52) 80%,
      rgba(8, 12, 18, 0.86) 100%);
  pointer-events: none;
}

.banner-content {
  position: absolute;
  inset: 0;
  z-index: 1;
  padding: clamp(1.2rem, 3vw, 2.4rem);
  color: white;
}

.eyebrow {
  position: absolute;
  top: clamp(1rem, 2.4vw, 1.6rem);
  left: clamp(1rem, 2.4vw, 1.6rem);
  display: inline-flex;
  width: fit-content;
  padding: 0.38rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.10);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-weight: 700;
  font-size: 0.92rem;
}

.banner-copy {
  position: absolute;
  left: clamp(1rem, 2.4vw, 1.6rem);
  right: clamp(1rem, 2.4vw, 1.6rem);
  bottom: clamp(1rem, 2.4vw, 1.8rem);
  max-width: min(58ch, 100%);
}

.banner-copy h1 {
  margin: 0 0 0.7rem;
  font-size: clamp(2.1rem, 4.6vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -0.05em;
  max-width: 12ch;
}

/* intro */
.intro p {
  margin: 0 0 1rem;
  color: var(--muted);
  max-width: 62ch;
}

/* social row */
.social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-top: 1.3rem;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  padding: 0.95rem 1.1rem;
  border-radius: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.social-btn:hover,
.social-btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.linkedin {
  color: var(--linkedin);
  background: rgba(10, 102, 194, 0.10);
  border-color: rgba(10, 102, 194, 0.16);
}

.github {
  color: var(--github);
  background: rgba(36, 41, 47, 0.08);
  border-color: rgba(36, 41, 47, 0.14);
}

.email {
  color: var(--email);
  background: rgba(122, 75, 42, 0.10);
  border-color: rgba(122, 75, 42, 0.16);
}

/* portrait card */
.portrait-card {
  padding: 1rem;
  display: grid;
  gap: 1rem;
  align-content: start;
}

.portrait-frame {
  position: relative;
  min-height: 440px;
  border-radius: 22px;
  overflow: hidden;
  background: linear-gradient(180deg, #e7edf4, #d8e1eb);
  border: 1px solid rgba(217, 226, 236, 0.95);
}

.placeholder-label {
  position: absolute;
  inset: auto 1rem 1rem 1rem;
  padding: 0.8rem 0.95rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.82);
  color: #4c5b6b;
  font-size: 0.94rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

/* meta list */
.meta-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.meta-item {
  background: var(--surface-soft);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem;
}

.meta-item span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  margin-bottom: 0.2rem;
}

/* publications */
.pub-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.pub-item {
  padding: 1rem 1.05rem 1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(180deg, #ffffff, #fbfdff);
}

.pub-title {
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.pub-meta,
.note,
.portrait-note {
  color: var(--muted);
  font-size: 0.96rem;
}

.pub-links {
  margin-top: 0.55rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.pub-links a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

/* mobile tweaks */
@media (max-width: 920px) {
  .meta-list {
    grid-template-columns: 1fr;
  }

  .portrait-frame {
    min-height: 360px;
  }
}

@media (max-width: 640px) {
  .banner-card {
    min-height: 380px;
  }

  .banner-overlay {
    background: linear-gradient(180deg,
        rgba(10, 16, 24, 0.78) 0%,
        rgba(10, 16, 24, 0.58) 55%,
        rgba(10, 16, 24, 0.28) 100%);
  }
}