/* Catalogue page — rides on styles.css and adds only the rail, the toolbar
   and the wider grid. Card styling is inherited so a catalogue card and a
   featured card are recognisably the same object. */

.cat-head{
  position:relative;overflow:hidden;color:#fff;
  background:
    radial-gradient(620px 320px at 88% 0%,rgba(124,58,237,.45),transparent 62%),
    radial-gradient(520px 300px at 6% 100%,rgba(37,99,235,.35),transparent 60%),
    linear-gradient(120deg,#080d28 0%,#111842 58%,#22165a 100%);
  padding:44px 0 46px;
}
.cat-head::before{
  content:'';position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:52px 52px;
  -webkit-mask-image:radial-gradient(70% 60% at 50% 40%,#000 0%,transparent 100%);
          mask-image:radial-gradient(70% 60% at 50% 40%,#000 0%,transparent 100%);
}
.cat-head .wrap{position:relative;z-index:1;}
.crumb{font-size:12px;color:#a9b4e2;display:flex;align-items:center;gap:8px;margin-bottom:14px;}
.crumb a{color:#c9d3ff;}
.crumb a:hover{color:#fff;}
.cat-head h1{font-size:36px;font-weight:900;letter-spacing:-1px;}
.cat-head > .wrap > p{color:#b3bce6;margin-top:10px;max-width:60ch;}
.cat-stats{display:flex;gap:30px;margin-top:24px;flex-wrap:wrap;}
.cat-stats div b{display:block;font-size:24px;font-weight:900;line-height:1;}
.cat-stats div small{font-size:11px;color:#9aa5d6;letter-spacing:.3px;text-transform:uppercase;font-weight:700;}

/* ---- layout ---- */
.cat-body{padding:26px 0 64px;}
.cat-grid{display:grid;grid-template-columns:250px 1fr;gap:26px;align-items:start;}

/* ---- filter rail ---- */
.rail{
  position:sticky;top:88px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-lg);box-shadow:var(--shadow);padding:6px 16px 14px;
  max-height:calc(100vh - 112px);overflow:auto;
}
.rail h3{
  font-size:11px;font-weight:800;letter-spacing:.6px;text-transform:uppercase;
  color:var(--ink-faint);margin:16px 0 8px;
}
.f-row{
  display:flex;align-items:center;gap:9px;padding:6px 6px;margin:0 -6px;
  border-radius:9px;cursor:pointer;font-size:12.5px;
  transition:background var(--ease);
}
.f-row:hover{background:#f3f7ff;}
.f-row input{position:absolute;opacity:0;pointer-events:none;}
.f-box{
  width:16px;height:16px;border-radius:5px;border:1.5px solid #c8d3ec;
  display:grid;place-items:center;flex:0 0 16px;
  font-size:9px;color:#fff;background:#fff;
  transition:background var(--ease),border-color var(--ease);
}
.f-box i{opacity:0;transition:opacity var(--ease);}
.f-row input:checked + .f-box{background:var(--blue);border-color:var(--blue);}
.f-row input:checked + .f-box i{opacity:1;}
.f-dot{width:7px;height:7px;border-radius:50%;flex:0 0 7px;}
.f-label{flex:1;font-weight:600;color:var(--ink-soft);}
.f-row input:checked ~ .f-label{color:var(--ink);font-weight:700;}
.f-n{font-size:10.5px;font-weight:700;color:var(--ink-faint);
  background:#f1f5ff;border-radius:99px;padding:2px 7px;}

/* ---- toolbar ---- */
.tools{
  display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap;
}
.search{
  position:relative;flex:1;min-width:220px;
}
.search i{position:absolute;left:14px;top:50%;transform:translateY(-50%);
  color:var(--ink-faint);font-size:13px;}
.search input{
  width:100%;background:#fff;border:1px solid var(--border);border-radius:12px;
  padding:11px 14px 11px 38px;font:inherit;font-size:13px;color:var(--ink);
  box-shadow:var(--shadow);transition:border-color var(--ease),box-shadow var(--ease);
}
.search input:focus{outline:none;border-color:#9ebaf5;box-shadow:0 0 0 4px rgba(37,99,235,.12);}
.tools select{
  background:#fff;border:1px solid var(--border);border-radius:12px;
  padding:11px 12px;font:inherit;font-size:12.5px;font-weight:600;color:var(--ink-soft);
  box-shadow:var(--shadow);cursor:pointer;
}
.result{font-size:13px;color:var(--ink-soft);}
.result b{color:var(--ink);font-weight:800;}

/* ---- active filter chips ---- */
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px;}
.chips:empty{display:none;}
.chip{
  display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:700;
  background:#e8efff;color:var(--blue-deep);border-radius:99px;padding:6px 12px;
  transition:background var(--ease);
}
.chip:hover{background:#d8e5ff;}
.chip i{font-size:10px;opacity:.7;}
.chip.clear{background:transparent;color:var(--ink-faint);text-decoration:underline;}

/* ---- the grid ---- */
.cat-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.cat-cards .proj-img{height:150px;}
.proj-no{
  position:absolute;top:10px;right:10px;z-index:2;
  font-size:10px;font-weight:800;letter-spacing:.4px;color:#fff;
  background:rgba(9,14,36,.5);backdrop-filter:blur(4px);
  border-radius:99px;padding:4px 9px;
}
/* A free sample earns a badge of its own, opposite the catalogue number. */
.proj-free{
  position:absolute;left:10px;bottom:10px;z-index:2;
  display:inline-flex;align-items:center;gap:5px;
  font-size:10px;font-weight:800;letter-spacing:.3px;color:#052e16;
  background:linear-gradient(135deg,#4ade80,#16a34a);
  border-radius:99px;padding:4px 10px;
  box-shadow:0 6px 16px -6px rgba(22,163,74,.8);
}
.lvl-beginner{color:#0284c7;}
.lvl-intermediate{color:#16a34a;}
.lvl-advanced{color:#d97706;}

.empty{
  background:#fff;border:1px dashed #c9d5ee;border-radius:var(--r-lg);
  padding:52px 20px;text-align:center;color:var(--ink-soft);
}
.empty i{font-size:26px;color:#b9c6e6;display:block;margin-bottom:12px;}
.empty b{display:block;color:var(--ink);font-size:15px;margin-bottom:6px;}

@media (max-width:1180px){
  .cat-cards{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:960px){
  .cat-grid{grid-template-columns:1fr;}
  .rail{position:static;max-height:none;}
  .cat-head h1{font-size:28px;}
}
@media (max-width:640px){
  .cat-cards{grid-template-columns:1fr;}
}