/* ===== kitchenschool.css ===== */
:root{
  --bg:#0b0c10;
  --panel:#121319;
  --text:#e8eaed;
  --muted:#b6bcc6;
  --brand:#4da3ff;
  --accent:#dfb924;
  --ring:rgba(77,163,255,0.4);
  --radius:22px;
  --shadow:0 10px 30px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  color:var(--text);
  background: radial-gradient(1200px 800px at 15% -10%, #121827 0%, #0b0c10 55%, #0b0c10 100%);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, 'Helvetica Neue', Arial, 'Apple Color Emoji','Segoe UI Emoji';
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

.site-header{
  position:sticky; top:0; z-index:5;
  backdrop-filter:saturate(140%) blur(6px);
  background:linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,0));
  padding:14px 18px;
}
.back-link{ color:var(--muted); text-decoration:none; font-weight:600; }
.back-link:hover{ color:var(--text) }

.container{ width:100%; max-width:1100px; margin:0 auto; padding: clamp(18px, 3vw, 36px); }

.hero h1{
  margin: clamp(8px, 1.2vw, 14px) 0 8px;
  font-size: clamp(28px, 3.6vw, 46px);
  line-height:1.15; letter-spacing:-0.02em; text-wrap:balance;
}
.subhead{
  margin: 22px 0 6px;
  font-size: clamp(22px, 2.6vw, 32px);
  letter-spacing: -0.01em;
}
.intro{ color:var(--muted); font-size: clamp(16px, 1.4vw, 18px); max-width: 88ch; }
.intro p{ margin:0 0 14px }
.divider{ border:0; height:1px; margin: 18px 0 8px; background:linear-gradient(90deg, rgba(255,255,255,.08), rgba(255,255,255,.22), rgba(255,255,255,.08)); }

.card-grid{
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(14px, 2.2vw, 24px);
}
@media (max-width: 920px){ .card-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px){ .card-grid{ grid-template-columns: 1fr; } }

.card{
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:10px;
  padding: clamp(16px, 2vw, 22px);
  border-radius: var(--radius);
  background:
    radial-gradient(600px 300px at 50% -10%, rgba(77,163,255,.08), rgba(77,163,255,0) 60%),
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);
  box-shadow: var(--shadow);
  cursor:pointer; text-decoration:none; color:var(--text);
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
  outline: none; position:relative; isolation:isolate;
}
.card:focus-visible{ box-shadow: 0 0 0 4px var(--ring), var(--shadow); }
.card .thumb{
  width:120px; height:120px; display:grid; place-items:center; overflow:hidden;
  border-radius: 20px;
  background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border:1px solid rgba(255,255,255,.08);
  transition: transform .25s ease;
}
.card img{ max-width:90%; height:auto; display:block }
.card-title{ margin:6px 0 0; font-size: clamp(16px, 1.4vw, 18px); font-weight:700; letter-spacing:.2px; }
.card:hover{ transform: translateY(-4px) scale(1.02); border-color: rgba(77,163,255,.35); box-shadow: 0 16px 40px rgba(0,0,0,.55); }
.card:hover .thumb{ transform: scale(1.05); }

.below-link{ margin-top: clamp(18px, 3vw, 36px); text-align:center; }
.cta-text{
  display:inline-block; text-decoration:none; font-weight:600; color:var(--muted);
  transform: translateZ(0);
  transition: color .18s ease, transform .18s ease;
}
.cta-text:hover{ color:var(--accent); transform: scale(1.02); }

/* Overlay for image preview */
.overlay{
  position:fixed; inset:0;
  padding: max(8px, env(safe-area-inset-top)) max(8px, env(safe-area-inset-right))
           max(8px, env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-left));
  background: rgba(0,0,0,.66);
  display:none; align-items:center; justify-content:center; z-index:50;
}
.overlay[aria-hidden="false"]{ display:flex; }

.imgbox{
  position:relative; display:block;
  max-width:96vw; max-height:92vh; overflow:hidden; border-radius:22px;
  box-shadow: 0 30px 80px rgba(0,0,0,.6);
}
.imgbox img{
  display:block; width:100%; height:100%; object-fit:contain; background:transparent;
}

/* Fly-in animation */
.fly-in{ opacity:0; transform: translateY(18px); animation: flyUp .6s cubic-bezier(.2,.7,.2,1) forwards; animation-delay: var(--delay,0ms); }
@keyframes flyUp{ to{ opacity:1; transform: translateY(0); } }

@media (prefers-reduced-motion: reduce){
  .card, .card .thumb{ transition:none }
  .fly-in{ animation:none; opacity:1; transform:none }
}