/* network.html only — layered on top of style.css + search.css.
   Keeps the same navy/white palette, fonts, spacing scale, radius and
   shadow tokens defined in css/style.css. */

/* ---------------------------------------------------------------------
   Filter bar (desktop: inline row under the search field)
--------------------------------------------------------------------- */

.network-filter-toggle{
  display:none;
  margin:1.1rem auto 0;
  padding:0.6rem 1.2rem;
  border-radius:8px;
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--blue-700);
  font-size:0.88rem;
  font-weight:600;
}

.network-filter-bar{
  max-width:760px;
  margin:1.1rem auto 0;
}
.network-filter-drawer-head{display:none;}

.network-filter-groups{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:1.1rem 1.6rem;
}
.network-filter-group{
  display:flex;
  flex-direction:column;
  gap:0.4rem;
  align-items:flex-start;
}
.network-filter-group-label{
  font-family:var(--font-mono);
  font-size:0.66rem;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--ink-400);
}
.network-filter-group .search-filter-select{margin-right:0.4rem;}

#reset-filters{display:block;margin:1rem auto 0;}

.network-filter-backdrop{
  position:fixed;inset:0;
  background:rgba(10,16,42,0.45);
  z-index:200;
}

/* ---------------------------------------------------------------------
   Active filter chips
--------------------------------------------------------------------- */

.network-active-chips{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:0.5rem;
  max-width:640px;
  margin:1rem auto 0;
}
.network-chip{
  display:inline-flex;
  align-items:center;
  gap:0.4rem;
  padding:0.4rem 0.7rem 0.4rem 0.9rem;
  border-radius:999px;
  background:var(--blue-50);
  border:1px solid var(--blue-200);
  color:var(--blue-700);
  font-size:0.82rem;
  font-weight:500;
}
.network-chip:hover{background:var(--blue-100);border-color:var(--blue-400);}
.network-chip span{color:var(--blue-500);font-weight:700;}

/* ---------------------------------------------------------------------
   Discovery layer (default / empty-search landing state)
--------------------------------------------------------------------- */

.network-discovery-inner{
  max-width:var(--container);
  margin:0 auto;
  padding:1rem 1.5rem 5rem;
  display:flex;
  flex-direction:column;
  gap:3.5rem;
}
.network-discovery-title{
  font-size:1.4rem;
  margin-bottom:1.3rem;
  padding-bottom:0.7rem;
  border-bottom:1px solid var(--line);
}

.network-world-pills{
  display:flex;
  flex-wrap:wrap;
  gap:0.7rem;
}
.network-world-pill{
  display:inline-flex;
  align-items:center;
  gap:0.5rem;
  padding:0.6rem 1rem;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:#fff;
  color:var(--ink-700);
  font-size:0.9rem;
  font-weight:500;
  transition:border-color .18s ease, transform .18s ease, background .18s ease;
}
.network-world-pill:hover{
  border-color:var(--blue-500);
  background:var(--blue-50);
  transform:translateY(-2px);
}
.network-world-count{
  font-family:var(--font-mono);
  font-size:0.76rem;
  color:var(--blue-600);
  background:var(--blue-100);
  border-radius:999px;
  padding:0.05rem 0.5rem;
}

/* ---------------------------------------------------------------------
   Responsive results grid — 4 / 3 / 2 / 1 columns
--------------------------------------------------------------------- */

.network-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1.6rem;
}
@media (max-width:1180px){.network-grid{grid-template-columns:repeat(3,1fr);}}
@media (max-width:860px){.network-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.network-grid{grid-template-columns:1fr;}}

.network-sentinel{height:1px;}

#load-more{display:block;margin:2.5rem auto 0;}

/* ---------------------------------------------------------------------
   Flip cards
--------------------------------------------------------------------- */

.alumni-card{
  perspective:1400px;
  background:transparent;
  border:none;
  box-shadow:none;
  padding:0;
  min-height:300px;
  border-radius:var(--radius);
}
.alumni-card:focus-visible{outline:none;}
.alumni-card:focus-visible .alumni-card-face{
  outline:2px solid var(--blue-500);
  outline-offset:2px;
}

.alumni-card-inner{
  position:relative;
  width:100%;
  height:100%;
  min-height:300px;
  transition:transform .5s cubic-bezier(.2,.8,.2,1);
  transform-style:preserve-3d;
}
.alumni-card.is-flipped .alumni-card-inner{transform:rotateY(180deg);}

.alumni-card-face{
  position:absolute;
  inset:0;
  -webkit-backface-visibility:hidden;
  backface-visibility:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:#fff;
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  transition:box-shadow .2s ease, border-color .2s ease;
}
.alumni-card:hover .alumni-card-face{box-shadow:var(--shadow-md);border-color:var(--blue-400);}

.alumni-card-back{transform:rotateY(180deg);}

.alumni-card-front{align-items:center;text-align:center;padding:1.8rem 1.3rem 1.1rem;}
.alumni-card-photo-wrap{margin-bottom:0.9rem;}
.alumni-card-photo{
  width:84px;height:84px;
  border-radius:50%;
  object-fit:cover;
  border:3px solid #fff;
  box-shadow:0 0 0 1px var(--line), var(--shadow-sm);
  background:var(--bg-panel);
}
.alumni-card-front-body{display:flex;flex-direction:column;gap:0.3rem;align-items:center;flex:1;}
.alumni-card-name{
  font-family:var(--font-display);
  font-weight:600;
  font-size:1.1rem;
  color:var(--ink-900);
}
.alumni-card-role{font-size:0.85rem;color:var(--ink-500);}
.alumni-card-loc{
  font-family:var(--font-mono);
  font-size:0.7rem;
  letter-spacing:0.05em;
  text-transform:uppercase;
  color:var(--blue-600);
}
.alumni-card-tags{display:flex;flex-wrap:wrap;justify-content:center;gap:0.4rem;margin-top:0.5rem;}
.alumni-card-tag{
  padding:0.25rem 0.6rem;
  border-radius:999px;
  background:var(--blue-50);
  border:1px solid var(--line);
  color:var(--ink-700);
  font-size:0.72rem;
  font-weight:500;
}
.alumni-card-hint{
  margin-top:auto;
  padding-top:0.8rem;
  font-size:0.7rem;
  color:var(--ink-400);
}

.alumni-card-back{padding:1.5rem 1.4rem;justify-content:space-between;}
.alumni-card-back-body{display:flex;flex-direction:column;gap:0.7rem;overflow:hidden;}
.alumni-card-back-line{font-size:0.82rem;color:var(--ink-700);line-height:1.45;}
.alumni-card-back-line strong{
  display:block;
  font-family:var(--font-mono);
  font-size:0.62rem;
  letter-spacing:0.07em;
  text-transform:uppercase;
  color:var(--blue-600);
  margin-bottom:0.15rem;
}
.alumni-card-back-bio{
  font-size:0.8rem;
  color:var(--ink-500);
  line-height:1.5;
  display:-webkit-box;
  -webkit-line-clamp:3;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.alumni-card-back-footer{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:0.6rem;
  padding-top:1rem;
  margin-top:0.8rem;
  border-top:1px solid var(--line);
}
.alumni-card-back-links{display:flex;gap:0.5rem;}
.alumni-card-icon-link{
  font-size:0.78rem;
  font-weight:600;
  color:var(--blue-600);
}
.alumni-card-icon-link:hover{text-decoration:underline;}

/* ---------------------------------------------------------------------
   Skeleton loading state
--------------------------------------------------------------------- */

.alumni-card-skeleton{
  min-height:300px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:#fff;
  padding:1.8rem 1.3rem;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:0.9rem;
}
.skeleton-photo{
  width:84px;height:84px;
  border-radius:50%;
  background:var(--bg-panel);
  animation:skeleton-pulse 1.4s ease-in-out infinite;
}
.skeleton-line{
  height:12px;
  border-radius:6px;
  background:var(--bg-panel);
  animation:skeleton-pulse 1.4s ease-in-out infinite;
}
.skeleton-line-wide{width:70%;}
.skeleton-line-narrow{width:45%;}
@keyframes skeleton-pulse{
  0%,100%{opacity:0.55;}
  50%{opacity:1;}
}

/* ---------------------------------------------------------------------
   Empty / error states
--------------------------------------------------------------------- */

.network-empty-state{
  grid-column:1 / -1;
  text-align:center;
  padding:3.5rem 1.5rem;
  color:var(--ink-500);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:1.2rem;
}

/* ---------------------------------------------------------------------
   Mobile: filter bar becomes a bottom sheet drawer
--------------------------------------------------------------------- */

@media (max-width:760px){
  .network-filter-toggle{display:inline-flex;align-items:center;justify-content:center;}

  .network-filter-bar{
    position:fixed;
    left:0;right:0;bottom:0;
    max-width:none;
    margin:0;
    z-index:201;
    background:#fff;
    border-radius:18px 18px 0 0;
    box-shadow:var(--shadow-lg);
    padding:1.2rem 1.4rem 1.6rem;
    max-height:80vh;
    overflow-y:auto;
    transform:translateY(100%);
    transition:transform .28s ease;
  }
  .network-filter-bar.is-open{transform:translateY(0);}

  .network-filter-drawer-head{
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-family:var(--font-display);
    font-weight:600;
    font-size:1.1rem;
    color:var(--ink-900);
    margin-bottom:1rem;
  }
  .network-filter-drawer-close{
    width:32px;height:32px;
    display:flex;align-items:center;justify-content:center;
    font-size:1.4rem;
    color:var(--ink-500);
    border-radius:50%;
  }
  .network-filter-drawer-close:hover{background:var(--bg-panel);}

  .network-filter-groups{justify-content:flex-start;}
  .network-filter-group{width:100%;}
  .network-filter-group .search-filter-select{width:100%;margin-right:0;margin-bottom:0.5rem;}

  #reset-filters{margin:0.8rem 0 0;}
}

@media (prefers-reduced-motion:reduce){
  .alumni-card-inner{transition:none !important;}
  .network-filter-bar{transition:none !important;}
}