/* vars */
:root {
  --blue: #2563EB;
  --blue-d: #1D4ED8;
  --blue-l: #EFF6FF;
  --blue-xl: #DBEAFE;
  --text: #111827;
  --text-2: #6B7280;
  --text-3: #9CA3AF;
  --bg: #F9FAFB;
  --surface: #FFFFFF;
  --border: #E5E7EB;
  --red: #EF4444;
  --green: #16A34A;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,.10);
  --header-h: 60px;
  --transition: .2s ease;
}

/* reset */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5;padding-top:var(--header-h);padding-bottom:env(safe-area-inset-bottom,0)}
img{max-width:100%;display:block;object-fit:cover}
a{text-decoration:none;color:inherit}
button{cursor:pointer;border:none;background:none;font-family:inherit}

/* layout */
.container{width:100%;max-width:720px;margin:0 auto;padding:0 16px}

/* header */
#header{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--header-h);background:var(--surface);border-bottom:1px solid var(--border);padding:0 16px}
.header-inner{height:100%;display:flex;align-items:center;gap:12px;max-width:720px;margin:0 auto}
.logo{font-size:18px;font-weight:700;color:var(--blue);flex-shrink:0;letter-spacing:-.5px}
.logo span{color:var(--text)}
.search-wrap{flex:1;display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 12px;transition:border-color var(--transition)}
.search-wrap:focus-within{border-color:var(--blue)}
.search-wrap svg{color:var(--text-3);flex-shrink:0}
.search-wrap input{border:none;background:none;font-size:14px;width:100%;outline:none;color:var(--text)}
.search-wrap input::placeholder{color:var(--text-3)}

/* hero */
#hero{background:linear-gradient(135deg,var(--blue) 0%,var(--blue-d) 100%);padding:40px 0 36px;color:#fff}
.hero-eyebrow{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;opacity:.75;margin-bottom:10px}
#hero h1{font-size:26px;font-weight:700;line-height:1.25;margin-bottom:10px}
#hero h1 span{opacity:.85}
.hero-sub{font-size:14px;opacity:.8}

/* cat tabs */
#cat-section{padding:16px 0 0;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:var(--header-h);z-index:90}
.cat-tabs{display:flex;gap:6px;overflow-x:auto;padding:0 16px 12px;scrollbar-width:none}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-btn{flex-shrink:0;padding:6px 14px;border-radius:100px;font-size:13px;font-weight:500;background:var(--bg);color:var(--text-2);border:1px solid var(--border);transition:all var(--transition)}
.cat-btn.active,.cat-btn:hover{background:var(--blue);color:#fff;border-color:var(--blue)}

/* sections */
.prod-section{padding:24px 0}
.sec-title{font-size:16px;font-weight:700;margin-bottom:16px}

/* product grid */
.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media(min-width:480px){.prod-grid{grid-template-columns:repeat(3,1fr)}}

/* skeleton */
.skeleton-card{border-radius:var(--radius);background:var(--border);aspect-ratio:3/4;animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}

/* product card */
.prod-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);overflow:hidden;cursor:pointer;transition:box-shadow var(--transition),transform var(--transition)}
.prod-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.prod-card:active{transform:scale(.98)}
.card-img{width:100%;aspect-ratio:1/1;background:var(--bg)}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-body{padding:10px}
.card-cat{font-size:10px;font-weight:600;color:var(--blue);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px}
.card-title{font-size:13px;font-weight:600;color:var(--text);line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:6px}
.card-prices{display:flex;flex-direction:column;gap:1px}
.price-disc{font-size:14px;font-weight:700;color:var(--blue)}
.price-ori{font-size:11px;color:var(--text-3);text-decoration:line-through}
.price-single{font-size:14px;font-weight:700;color:var(--text)}

/* modal */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:flex-end;pointer-events:none;opacity:0;transition:opacity var(--transition)}
.modal.open{opacity:1;pointer-events:all}
.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.5)}
.modal-box{position:relative;width:100%;max-height:90dvh;background:var(--surface);border-radius:20px 20px 0 0;overflow-y:auto;transform:translateY(100%);transition:transform .3s ease}
.modal.open .modal-box{transform:translateY(0)}
.modal-close{position:absolute;top:14px;right:14px;z-index:10;width:32px;height:32px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;color:var(--text-2)}
.modal-img-wrap{width:100%;aspect-ratio:4/3;background:var(--bg)}
.modal-img-wrap img{width:100%;height:100%;object-fit:cover}
.modal-body{padding:20px}
.modal-cat-badge{display:inline-block;font-size:10px;font-weight:600;color:var(--blue);background:var(--blue-l);padding:3px 8px;border-radius:100px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px}
.modal-body h3{font-size:17px;font-weight:700;line-height:1.3;margin-bottom:10px}
.modal-price{display:flex;align-items:baseline;gap:8px;margin-bottom:14px}
.modal-price .price-disc{font-size:20px}
.modal-price .price-ori{font-size:13px}
.modal-desc{font-size:13px;color:var(--text-2);line-height:1.6;margin-bottom:20px;white-space:pre-wrap}
.cta-btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:14px;background:var(--blue);color:#fff;border-radius:var(--radius-sm);font-size:15px;font-weight:600;transition:background var(--transition)}
.cta-btn:hover{background:var(--blue-d)}
.related-wrap{margin-top:24px}
.related-title{font-size:13px;font-weight:600;margin-bottom:10px;color:var(--text-2)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.related-card{cursor:pointer;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border)}
.related-card img{width:100%;aspect-ratio:1/1;object-fit:cover}
.related-card p{font-size:11px;font-weight:500;padding:6px;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* empty state */
.empty-state{text-align:center;padding:60px 20px;color:var(--text-2)}
.empty-state svg{margin:0 auto 14px;opacity:.35}
.empty-state p{font-size:16px;font-weight:600;color:var(--text);margin-bottom:4px}
.empty-state span{font-size:13px}

/* pwa prompt */
.pwa-prompt{position:fixed;bottom:20px;left:16px;right:16px;z-index:300;background:var(--text);color:#fff;border-radius:var(--radius);padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;box-shadow:var(--shadow-md)}
.pwa-prompt strong{display:block;font-size:14px;font-weight:600;margin-bottom:2px}
.pwa-prompt span{font-size:12px;opacity:.7}
.pwa-actions{display:flex;gap:8px;flex-shrink:0}
.pwa-install-btn{background:var(--blue);color:#fff;padding:7px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:600}
.pwa-dismiss-btn{color:rgba(255,255,255,.6);font-size:13px;padding:7px 4px}

/* footer */
footer{padding:24px 0;border-top:1px solid var(--border);text-align:center;color:var(--text-3);font-size:12px}