/* ----------------- VARIABLES ----------------- */
:root {
  --accent: black;
  --bg: #fafafa;
  --card: #fff;
  --maxw: 1000px;
}

/* ----------------- GLOBAL ----------------- */
body {
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  margin: 0;
  color: #222;
  background: var(--bg);
}

/* ----------------- ABOUT HEADER ----------------- */
.about-header {
  text-align: center;
  margin: 2rem 0;
}

.about-header h1 {
  font-size: 2.5rem;
  color: black;
  margin-bottom: 0.5rem;
}

.about-header p {
  color: #666;
  font-size: 1.1rem;
}

/* ----------------- CORE VALUES ----------------- */
.core-values {
  text-align: center;
  margin: 2rem 0;
}

.core-values h2 {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

/* Grid layout for value cards */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

/* Individual value cards */
.value-card {
  background: var(--card);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(30,30,30,0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.value-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

.value-card h3 {
  color: var(--accent);
  margin-bottom: 0.8rem;
  font-size: 1.5rem;
}

.value-card p {
  color: #444;
  font-size: 1rem;
  line-height: 1.5;
}

/* Icon spacing */
.value-card i {
  margin-right: 0.5rem;
}

/* ----------------- RESPONSIVE ----------------- */
@media (max-width: 820px) {
  .about-header h1 {
    font-size: 2rem;
  }

  .core-values h2 {
    font-size: 1.5rem;
  }
}

/* ----------------- Faculty Advisor Section ----------------- */
.faculty-advisor {
  text-align: center;
  margin: 3rem 0;
}

.faculty-advisor h2 {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.advisor-card {
  max-width: 600px;
  margin: 0 auto;
  background: var(--card);
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(30,30,30,0.05);
  text-align: center;
  opacity: 0;             /* hidden initially for animation */
  transform: translateY(20px); /* slide up on load */
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.advisor-card img {
  width: 60%;
  height: 60%;
  border-radius: 16px;
  object-fit: cover;
  object-position: center;
  margin-bottom: 1rem;
  border: 3px solid black;
}

.advisor-card h3 {
  color: black;
  margin-bottom: 0.3rem;
  font-size: 1.4rem;
}

.advisor-card .department {
  color: #555;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.advisor-card .bio {
  color: #444;
  font-size: 1rem;
  line-height: 1.5;
}


/* ========== Leadership Section ========== */

.leadership {
  text-align: center;
  margin: 3rem 0;
}

.leadership h2 {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

.leadership-grid {
  display: grid;
  gap: 1.5rem;
  justify-content: center;
  grid-template-columns: repeat(3, 220px); /* 3 columns for top row */
  grid-auto-rows: auto;
}

/* ---- Medium screens: diamond layout ---- */
.leadership-grid .leader-card:nth-child(4) {
  grid-column: 1 / 3;
  grid-row: 2;
  justify-self: center;
}

.leadership-grid .leader-card:nth-child(5) {
  grid-column: 2 / 4;
  grid-row: 2;
  justify-self: center;
}

/* ---- Large screens: all in one row ---- */
@media (min-width: 1200px) {
  .leadership-grid {
    grid-template-columns: repeat(5, 1fr);
  }

  .leadership-grid .leader-card:nth-child(4),
  .leadership-grid .leader-card:nth-child(5) {
    grid-column: auto;
    grid-row: auto;
    justify-self: auto;
  }
}

/* ---- Small screens: single column ---- */
@media (max-width: 799px) {
  .leadership-grid {
    grid-template-columns: 1fr;
    justify-content: center;
  }

  .leadership-grid .leader-card:nth-child(4),
  .leadership-grid .leader-card:nth-child(5) {
    grid-column: auto;
    grid-row: auto;
    justify-self: auto;
  }
}

.leader-card {
  background: var(--card);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(30,30,30,0.05);
  text-align: center;
  transform: translateY(20px); /* initial Y offset */
  opacity: 0;                 /* initial hidden */
  filter: blur(4px);          /* initial blur */
  transition: transform 0.6s ease, opacity 0.6s ease, filter 0.6s ease;
}

.leader-card.in-view {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);            /* blur cleared when visible */
}

.leader-card:hover {
  transform: translateY(-8px) scale(1.03);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
  filter: brightness(1.05);
}

.leader-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease, box-shadow 0.3s ease;
}

.leader-card:hover::after {
  opacity: 1;
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.3);
}

.leader-card img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
  margin-bottom: 1rem;
  border: 3px solid black;
}

.leadership-grid .leader-card:nth-child(4) img {
  object-position: top;
}

.leader-card h3 {
  color: black;
  margin-bottom: 0.3rem;
  font-size: 1.2rem;
}

.leader-card .position,
.leader-card .class-major {
  color: #555;
  margin: 0.2rem 0;
  font-size: 0.95rem;
}

.leader-card .linkedin-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  color: #0e76a8;
  margin-top: 0.5rem;
  font-weight: 500;
  text-decoration: none;
}

.leader-card .linkedin-link:hover {
  text-decoration: underline;
}

/* ----------------- Sub-Teams Section ----------------- */
.sub-teams {
  text-align: center;
  margin: 3rem 0;
}

.sub-teams h2 {
  font-size: 2rem;
  color: var(--accent);
  margin-bottom: 1.5rem;
}

/* Grid layout: 2 rows of 3 by default */
.sub-teams-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  justify-content: center;
}

/* Individual sub-team cards */
.sub-team-card {
  background: var(--card);
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: 0 6px 20px rgba(30,30,30,0.05);
  text-align: center;
  opacity: 0; /* hidden initially for animation */
  transform: translateY(20px); /* start slightly below */
  transition: opacity 0.5s ease, transform 0.5s ease;
}

/* Sub-team card hover effect */
.sub-team-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.15);
}

/* Sub-team images */
.sub-team-card img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center;
  margin-bottom: 1rem;
  border: 3px solid black;
}

/* Sub-team name and role */
.sub-team-card h3 {
  color: black;
  margin-bottom: 0.3rem;
  font-size: 1.2rem;
}

.sub-team-card p {
  color: #555;
  margin: 0.2rem 0;
  font-size: 0.95rem;
}

/* Responsive: stack in 1 column on small screens */
@media (max-width: 800px) {
  .sub-teams-grid {
    grid-template-columns: 1fr;
  }
}