:root{
  --brand:#3b3ce0;
  --brand-2:#2a2bb8;
  --bg:#eef1fb;
  --card:#ffffff;
  --text:#1a1c2e;
  --muted:#6b7194;
  --ring:rgba(59,60,224,.35);
  --shadow:0 8px 24px rgba(30,34,90,.10);
  --shadow-hover:0 14px 34px rgba(30,34,90,.20);
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

/* Header */
.site-header{
  background:linear-gradient(135deg,var(--brand) 0%,var(--brand-2) 100%);
  color:#fff;
  padding:30px 20px 34px;
  box-shadow:0 4px 18px rgba(30,34,90,.18);
}
.header-inner{max-width:1120px;margin:0 auto}
.site-header h1{margin:0;font-size:2rem;font-weight:800;letter-spacing:-.5px}
.tagline{margin:6px 0 20px;opacity:.9;font-size:1.02rem}
.searchbar{
  position:relative;display:flex;align-items:center;
  background:#fff;border-radius:999px;
  box-shadow:0 6px 18px rgba(0,0,0,.12);
  max-width:680px;
}
.search-icon{position:absolute;left:16px;font-size:1rem;opacity:.6;pointer-events:none}
#search{
  flex:1;border:none;outline:none;background:transparent;
  padding:14px 44px 14px 44px;font-size:1rem;border-radius:999px;color:var(--text);
}
.search-clear{
  position:absolute;right:10px;border:none;background:#eef1fb;color:var(--muted);
  width:28px;height:28px;border-radius:50%;cursor:pointer;font-size:.85rem;
  display:flex;align-items:center;justify-content:center;transition:background .2s;
}
.search-clear:hover{background:#dfe3f5}

/* Main */
main{flex:1;max-width:1120px;width:100%;margin:0 auto;padding:24px 20px 40px}
.toolbar{display:flex;align-items:center;gap:14px;margin:8px 0 22px;flex-wrap:wrap}
.btn{
  border:none;cursor:pointer;font-size:.95rem;font-weight:600;
  padding:9px 16px;border-radius:10px;transition:transform .15s,box-shadow .2s,background .2s;
}
.btn-back{background:var(--brand);color:#fff;box-shadow:var(--shadow)}
.btn-back:hover{background:var(--brand-2);transform:translateX(-2px)}
.btn-back:active{transform:translateX(-2px) scale(.97)}

/* Breadcrumb */
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:2px;font-size:1rem;color:var(--muted)}
.breadcrumb .crumb{
  background:none;border:none;cursor:pointer;color:var(--muted);
  font-size:1rem;padding:4px 8px;border-radius:8px;transition:background .18s,color .18s;
}
.breadcrumb .crumb:hover{background:#e2e6f7;color:var(--brand)}
.breadcrumb .crumb.current{color:var(--text);font-weight:700;cursor:default}
.breadcrumb .crumb.current:hover{background:none}
.breadcrumb .sep{color:#b9bedb;margin:0 1px;user-select:none}

/* Grid + cards */
.grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px;
}
.card{
  background:var(--card);border-radius:var(--radius);padding:26px 22px;
  box-shadow:var(--shadow);cursor:pointer;border:1px solid rgba(30,34,90,.05);
  display:flex;flex-direction:column;gap:10px;text-align:left;
  transition:transform .22s cubic-bezier(.2,.8,.2,1),box-shadow .22s;
  animation:cardIn .38s cubic-bezier(.2,.8,.2,1) both;
}
.card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover)}
.card:active{transform:translateY(-2px) scale(.99)}
.card:focus-visible{outline:3px solid var(--ring);outline-offset:2px}
.card .icon{font-size:2.4rem;line-height:1}
.card .title{font-size:1.15rem;font-weight:700;margin:0}
.card .meta{font-size:.85rem;color:var(--muted);margin:0}
.card.is-program{border-top:3px solid var(--brand)}
.card .badge{
  align-self:flex-start;font-size:.72rem;font-weight:700;letter-spacing:.4px;
  text-transform:uppercase;padding:3px 9px;border-radius:999px;
}
.badge-folder{background:#eef1fb;color:var(--brand-2)}
.badge-program{background:#e6f7ee;color:#1c8a4d}
.card .path-hint{font-size:.78rem;color:var(--muted)}

/* stagger */
.card:nth-child(1){animation-delay:.02s}
.card:nth-child(2){animation-delay:.06s}
.card:nth-child(3){animation-delay:.10s}
.card:nth-child(4){animation-delay:.14s}
.card:nth-child(5){animation-delay:.18s}
.card:nth-child(6){animation-delay:.22s}
.card:nth-child(7){animation-delay:.26s}
.card:nth-child(8){animation-delay:.30s}

@keyframes cardIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:translateY(0)}}

.empty-state{
  text-align:center;color:var(--muted);padding:60px 20px;font-size:1.05rem;
  animation:cardIn .3s ease both;
}
.empty-state .big{font-size:3rem;display:block;margin-bottom:12px}

/* Footer */
.site-footer{background:#fff;border-top:1px solid rgba(30,34,90,.08);color:var(--muted);font-size:.9rem}
.footer-inner{
  max-width:1120px;margin:0 auto;padding:18px 20px;
  display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
}
.footer-links{display:flex;gap:8px}
.link-btn{
  background:none;border:1px solid rgba(30,34,90,.15);color:var(--muted);
  padding:7px 14px;border-radius:8px;cursor:pointer;font-size:.88rem;transition:all .18s;
}
.link-btn:hover{border-color:var(--brand);color:var(--brand);background:#f4f5fd}

/* Modal */
.modal{position:fixed;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:20px}
.modal[hidden]{display:none}
.modal-backdrop{position:absolute;inset:0;background:rgba(20,22,50,.5);backdrop-filter:blur(3px);animation:fadeIn .2s ease}
.modal-box{
  position:relative;background:#fff;border-radius:18px;max-width:640px;width:100%;
  max-height:85vh;overflow:auto;padding:32px 34px;box-shadow:0 24px 60px rgba(0,0,0,.35);
  animation:modalIn .28s cubic-bezier(.2,.8,.2,1);
}
.modal-box h2{margin-top:0;color:var(--brand-2)}
.modal-box h3{margin:20px 0 6px;font-size:1rem;color:var(--text)}
.modal-box p{line-height:1.6;color:#3a3f5c;margin:6px 0}
.modal-box a{color:var(--brand)}
.modal-updated{margin-top:22px;font-size:.82rem;color:var(--muted)}
.modal-close{
  position:absolute;top:14px;right:14px;border:none;background:#eef1fb;color:var(--muted);
  width:34px;height:34px;border-radius:50%;cursor:pointer;font-size:1rem;transition:all .18s;
}
.modal-close:hover{background:var(--brand);color:#fff}

@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes modalIn{from{opacity:0;transform:translateY(18px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}

@media (max-width:520px){
  .site-header h1{font-size:1.6rem}
  .footer-inner{flex-direction:column;text-align:center}
  .modal-box{padding:26px 22px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}