:root{
  --bg:#fafafa;
  --card:#ffffff;
  --muted:#6b7280;
  --accent:#0ea5a4;
  --radius:12px;
  --gap:12px;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

*{box-sizing:border-box}
html,body,#app{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:#111;
  font-size:16px;
  line-height:1.4;
}

.app-bar{
  height:56px;
  display:flex;
  align-items:center;
  padding:0 14px;
  gap:10px;
  background:linear-gradient(90deg, #ffffff, #f8fafb);
  border-bottom:1px solid rgba(0,0,0,0.06);
  position:sticky;
  top:0;
  z-index:10;
}
.app-bar .left{font-size:20px}
.app-bar .title{flex:1; font-weight:600; text-align:center}
.app-bar .right{font-size:18px}

.container{
  padding:12px;
  padding-bottom:84px;
  min-height:calc(100vh - 56px - 56px);
}

.search-row{display:flex; gap:8px; margin-bottom:10px}
.search-row input{
  flex:1;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid rgba(0,0,0,0.08);
  background:var(--card);
  font-size:15px;
}

.section-title{
  font-weight:600;
  margin:14px 2px 8px;
  color:#111;
}

/* loader with spinner */
.loader{
  padding:30px;
  text-align:center;
  color:var(--muted);
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
}

.spinner{
  width:40px;
  height:40px;
  border-radius:50%;
  border:4px solid rgba(0,0,0,0.08);
  border-top-color: var(--accent);
  animation: spin 1s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* grid for categories */
.grid{display:grid; grid-template-columns:repeat(2,1fr); gap:10px}
.cat-card{
  background:var(--card);
  border-radius:12px;
  overflow:hidden;
  box-shadow:0 6px 18px rgba(10,10,10,0.04);
  display:flex;
  flex-direction:column;
  min-height:120px;
  justify-content:flex-end;
  padding:10px;
  color:#fff;
  position:relative;
}
.cat-card .bg{position:absolute; inset:0; background-size:cover; background-position:center; filter:brightness(0.6)}
.cat-card .label{position:relative; z-index:2; font-weight:700; font-size:16px}

/* list cards */
.list{display:flex; flex-direction:column; gap:10px}
.card{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow: 0 6px 18px rgba(10,10,10,0.04);
  overflow:hidden;
  display:flex;
  gap:10px;
  align-items:center;
  padding:10px;
}
.card .thumb{
  width:110px;
  height:70px;
  border-radius:8px;
  background:linear-gradient(90deg,#eee,#ddd);
  flex-shrink:0;
  display:flex;
  align-items:center;
  justify-content:center;
  color:var(--muted);
  font-size:13px;
  text-align:center;
}
.card .meta{flex:1}
.card .meta h3{margin:0;font-size:16px}
.card .meta p{margin:4px 0 0;color:var(--muted);font-size:13px}

/* bottom nav */
.bottom-nav{
  position:fixed;
  left:0;right:0;bottom:0;
  height:56px;
  display:flex;
  gap:6px;
  background:#fff;
  border-top:1px solid rgba(0,0,0,0.06);
  padding:6px 8px;
}
.nav-btn{
  flex:1;
  border:0;
  background:transparent;
  font-size:14px;
  border-radius:10px;
}

/* detail */
.hero{width:100%; height:200px; border-radius:10px; background:linear-gradient(90deg,#eee,#ddd); margin-bottom:10px; overflow:hidden}
.hero img{width:100%; height:100%; object-fit:cover; display:block}
.meta-row{display:flex; gap:8px; align-items:center; color:var(--muted); font-size:14px; margin-bottom:8px}
.chip{background:rgba(14,165,164,0.12); color:var(--accent); padding:4px 8px; border-radius:999px; font-weight:600}

.ingredients{list-style:disc; padding-left:18px; margin:0; display:flex; flex-direction:column; gap:6px}
.instructions{padding-left:18px; margin-top:8px}
.instructions li{margin-bottom:8px}

.detail-actions{display:flex; gap:8px; margin-top:12px}
button{cursor:pointer}
button.ghost{background:transparent;border:1px solid rgba(0,0,0,0.06); padding:8px 10px;border-radius:8px}
#favBtn{flex:1;background:var(--accent); color:white; border:0; padding:10px; border-radius:8px}

@media(min-width:700px){
  .container{max-width:720px;margin:0 auto}
  .card{padding:14px}
  .grid{grid-template-columns:repeat(4,1fr)}
}