/* People page — extends styles.css */

/* Keep the fixed nav reading as white over the dark hero — translucent
   blur picks up the dark-blue hero behind it and reads as grey. */
body[data-page="people"] .nav{
  background: var(--bg);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid var(--line-soft);
}

.people-hero{
  padding: 160px var(--pad-x) 80px;
  background: var(--ink, #0e1530);
  color: var(--bg);
  position: relative;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  isolation: isolate;
}
/* Background slideshow */
.hero-bg{
  position: absolute; inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero-bg-slide{
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.4s ease;
  filter: saturate(0.85) contrast(1.05);
}
.hero-bg-slide.active{ opacity: 1; }
.hero-bg::after{
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(1,15,40,0.55) 0%, rgba(1,15,40,0.65) 60%, rgba(1,15,40,0.85) 100%),
    radial-gradient(circle at 25% 20%, rgba(153,0,0,0.25), transparent 55%);
}
.people-hero > *:not(.hero-bg){ position: relative; z-index: 1; }

.people-hero-meta{
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 11px;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: rgba(255,255,255,0.78);
  border-top: 1px solid rgba(255,255,255,0.18);
  border-bottom: 1px solid rgba(255,255,255,0.18);
  padding: 10px 0;
  margin-bottom: 60px;
}
.people-hero-meta .tick{
  display: inline-block; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
  margin-right: 6px; vertical-align: middle;
}
.people-display{
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(56px, 11vw, 188px);
  line-height: 0.92; letter-spacing: -0.025em;
  margin: 0 0 32px;
  color: #fff;
  text-shadow: 0 4px 30px rgba(0,0,0,0.35);
}
.people-display em{ color: #ffb3b3; }
.people-lede{
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.5;
  max-width: 60ch;
  color: rgba(255,255,255,0.85);
}

/* PI */
.pi-section{ padding-bottom: 60px; }
.pi-card{
  margin: 0 clamp(48px, 28vw, 520px);
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-warm);
}
.pi-photo{
  background: #fff;
  position: relative;
  overflow: hidden;
  min-height: 480px;
  padding: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.pi-photo img{
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  border-radius: var(--r-md);
  filter: grayscale(20%) contrast(1.05);
  transition: transform .8s ease, filter .8s ease;
}
.pi-card:hover .pi-photo img{ transform: scale(1.04); filter: grayscale(0%) contrast(1.1); }
.pi-badge{
  position: absolute; top: 24px; left: 24px;
  font-family: var(--mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.1em;
  background: var(--bg); color: var(--accent);
  padding: 6px 12px; border-radius: 999px;
  z-index: 2;
}
.pi-text{
  padding: 56px clamp(28px, 4vw, 64px);
  display: flex; flex-direction: column; gap: 18px;
}
.pi-name{
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(40px, 4.5vw, 68px);
  line-height: 0.96; letter-spacing: -0.02em;
  margin: 0;
}
.pi-name a{ color: inherit; }
.pi-name a:hover{ color: var(--accent); }
.pi-titles{ list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 4px; }
.pi-titles li{
  font-family: var(--serif); font-style: italic;
  font-size: clamp(15px, 1.2vw, 18px);
  color: var(--ink-soft); line-height: 1.4;
}
.pi-bio{
  font-size: 15.5px; line-height: 1.6;
  color: var(--ink); max-width: 60ch; margin-top: 8px;
}

/* sections */
.people-section{ padding-bottom: 60px; }
.alumni-section{ padding-bottom: 60px; border-top: 1px solid var(--line); }

/* grid */
.people-grid{
  margin: 0 var(--pad-x);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.people-grid-lg{ grid-template-columns: repeat(6, 1fr); }
#staff-grid{ margin: 0 calc(var(--pad-x) + (100% - 2 * var(--pad-x)) / 6); }
@media (max-width: 980px){ #staff-grid{ margin: 0 var(--pad-x); } }
.person{
  background: var(--bg);
  padding: 20px;
  display: flex; flex-direction: column; gap: 12px;
  text-align: left;
  cursor: pointer;
  transition: background .25s ease, color .25s ease;
  position: relative;
}
.person:hover{ background: var(--accent); color: var(--bg); }
.person:hover .person-meta{ color: color-mix(in oklab, var(--bg) 75%, transparent); }
.person:hover .person-arrow{ opacity: 1; transform: translate(0,0); }
.person-photo{
  width: 100%;
  aspect-ratio: 1;
  background: var(--bg-warm);
  border-radius: var(--r-md);
  overflow: hidden;
  position: relative;
}
.person-photo img{
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(40%);
  transition: filter .3s ease, transform .5s ease;
}
.person:hover .person-photo img{ filter: grayscale(0%); transform: scale(1.04); }
.person-name{
  font-family: var(--serif); font-weight: 400;
  font-size: 19px; line-height: 1.1;
  letter-spacing: -0.005em;
  margin: 0;
}
.person-meta{
  font-family: var(--mono); font-size: 10px;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--ink-soft);
  margin: 0;
  line-height: 1.4;
}
.person-arrow{
  position: absolute; top: 20px; right: 20px;
  font-family: var(--serif); font-size: 18px; line-height: 1;
  opacity: 0; transform: translate(-4px, 4px);
  transition: opacity .25s ease, transform .25s ease;
  z-index: 2;
}

/* alumni */
.alumni-tabs{
  margin: 0 var(--pad-x) 24px;
  display: inline-flex;
  background: var(--bg-warm);
  padding: 4px;
  border-radius: 999px;
  border: 1px solid var(--line);
  margin-left: var(--pad-x);
}
.alumni-tab{
  padding: 10px 20px;
  border-radius: 999px;
  border: none; background: transparent;
  font-family: var(--sans); font-size: 13px; font-weight: 500;
  color: var(--ink); cursor: pointer;
  transition: background .25s ease, color .25s ease;
}
.alumni-tab.active{ background: var(--accent); color: var(--bg); }
.alumni-list{
  margin: 0 var(--pad-x);
  border-top: 1px solid var(--line);
}
.alumni-row{
  display: grid;
  grid-template-columns: 0.6fr 1.5fr 2fr 30px;
  gap: 24px;
  align-items: center;
  padding: 18px 8px;
  border-bottom: 1px solid var(--line);
  transition: background .2s ease, padding .25s ease;
}
.alumni-row:hover{ background: var(--bg-warm); padding-left: 20px; }
.alumni-row .yr{
  font-family: var(--mono); font-size: 11px;
  color: var(--ink-soft); letter-spacing: 0.05em;
}
.alumni-row .nm{
  font-family: var(--serif); font-size: 22px;
  letter-spacing: -0.005em;
}
.alumni-row .nm a:hover{ color: var(--accent); }
.alumni-row .nt{
  font-size: 14px; color: var(--ink-soft);
  font-style: italic; font-family: var(--serif);
}
.alumni-row .ar{
  font-family: var(--serif); font-size: 22px;
  color: var(--accent); opacity: 0;
  transition: opacity .25s ease, transform .25s ease;
  transform: translateX(-4px);
}
.alumni-row:hover .ar{ opacity: 1; transform: translateX(0); }
.alumni-foot{
  margin: 32px var(--pad-x) 0;
  font-size: 14px; color: var(--ink-soft);
}
.alumni-foot a{ color: var(--accent); border-bottom: 1px solid currentColor; }

/* responsive */
@media (max-width: 980px){
  .pi-card{ grid-template-columns: 1fr; }
  .pi-photo{ min-height: 320px; }
  .people-grid{ grid-template-columns: repeat(2, 1fr); }
  .people-grid-lg{ grid-template-columns: repeat(2, 1fr); }
  .alumni-row{ grid-template-columns: 1fr; gap: 4px; padding: 14px 8px; }
  .alumni-row .ar{ display: none; }
}