*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0f0f1a;
  --surface:#1a1a2e;
  --surface2:#25253d;
  --primary:#6c5ce7;
  --primary-light:#a29bfe;
  --accent:#00cec9;
  --text:#e8e8f0;
  --text-dim:#8888a8;
  --success:#00b894;
  --warning:#fdcb6e;
  --danger:#e17055;
  --radius:14px;
  --shadow:0 4px 24px rgba(0,0,0,.35);
}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6;-webkit-tap-highlight-color:transparent}

/* ── HEADER ─────────────────────────────── */
.header{position:sticky;top:0;z-index:100;background:rgba(15,15,26,.92);backdrop-filter:blur(14px);border-bottom:1px solid rgba(108,92,231,.15);padding:14px 16px;display:flex;align-items:center;gap:12px}
.header-logo{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}
.header-title{font-size:1.15rem;font-weight:700;background:linear-gradient(135deg,var(--primary-light),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.header-sub{font-size:.7rem;color:var(--text-dim);margin-top:-2px}
.header-right{margin-left:auto;display:flex;align-items:center;gap:8px}

/* ── SEARCH ─────────────────────────────── */
.search-wrap{padding:12px 16px 6px}
.search-box{display:flex;align-items:center;background:var(--surface);border:1px solid rgba(108,92,231,.2);border-radius:12px;padding:10px 14px;gap:8px;transition:border .2s}
.search-box:focus-within{border-color:var(--primary)}
.search-box svg{width:18px;height:18px;color:var(--text-dim);flex-shrink:0}
.search-box input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:.92rem}
.search-box input::placeholder{color:var(--text-dim)}

/* ── CATEGORIES NAV ─────────────────────── */
.cat-nav{display:flex;gap:8px;padding:10px 16px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.cat-nav::-webkit-scrollbar{display:none}
.cat-chip{white-space:nowrap;padding:7px 16px;border-radius:20px;font-size:.82rem;font-weight:600;background:var(--surface);color:var(--text-dim);border:1px solid transparent;cursor:pointer;transition:all .2s;flex-shrink:0}
.cat-chip.active,.cat-chip:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ── SECTION ────────────────────────────── */
.section{padding:18px 16px 8px}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.section-title{font-size:1.05rem;font-weight:700;display:flex;align-items:center;gap:8px}
.section-title span.icon{font-size:1.2rem}
.section-count{font-size:.75rem;color:var(--text-dim);background:var(--surface);padding:3px 10px;border-radius:10px}

/* ── PRODUCT CARDS ──────────────────────── */
.products-grid{display:grid;grid-template-columns:1fr;gap:12px}
@media(min-width:420px){.products-grid{grid-template-columns:repeat(2,1fr)}}

.product-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid rgba(108,92,231,.1);transition:transform .2s,box-shadow .2s;cursor:pointer;text-decoration:none;color:inherit}
.product-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(108,92,231,.3)}
.card-img{width:100%;aspect-ratio:16/10;background:var(--surface2);display:flex;align-items:center;justify-content:center;font-size:2.8rem;position:relative;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:cover}
.card-badge{position:absolute;top:8px;right:8px;background:var(--primary);color:#fff;font-size:.68rem;font-weight:700;padding:3px 9px;border-radius:8px}
.card-body{padding:12px 14px 14px}
.card-title{font-size:.92rem;font-weight:700;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-desc{font-size:.78rem;color:var(--text-dim);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:10px}
.card-footer{display:flex;align-items:center;justify-content:space-between}
.card-price{font-size:1.05rem;font-weight:800;color:var(--accent)}
.card-pages{font-size:.72rem;color:var(--text-dim)}
.card-tags{display:flex;gap:4px;flex-wrap:wrap;margin-bottom:8px}
.card-tag{font-size:.65rem;padding:2px 7px;border-radius:6px;background:rgba(108,92,231,.15);color:var(--primary-light)}

/* ── PRODUCT DETAIL PAGE ────────────────── */
.detail-hero{padding:20px 16px;text-align:center}
.detail-icon{width:80px;height:80px;margin:0 auto 14px;background:linear-gradient(135deg,var(--primary),var(--accent));border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2.4rem}
.detail-name{font-size:1.3rem;font-weight:800;margin-bottom:4px}
.detail-cat{font-size:.82rem;color:var(--text-dim);margin-bottom:14px}
.detail-price-box{display:inline-flex;align-items:baseline;gap:4px;background:var(--surface);padding:10px 24px;border-radius:12px;margin-bottom:16px}
.detail-price-box .amount{font-size:1.6rem;font-weight:800;color:var(--accent)}
.detail-price-box .curr{font-size:.85rem;color:var(--text-dim)}
.detail-desc{text-align:left;background:var(--surface);border-radius:var(--radius);padding:16px;margin:0 0 14px;font-size:.88rem;line-height:1.7;color:var(--text-dim)}
.detail-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:18px}
.meta-item{background:var(--surface);border-radius:12px;padding:12px 8px;text-align:center}
.meta-val{font-size:1.1rem;font-weight:700;color:var(--text)}
.meta-label{font-size:.7rem;color:var(--text-dim);margin-top:2px}
.detail-tags{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-bottom:20px}
.detail-tag{font-size:.75rem;padding:4px 12px;border-radius:8px;background:rgba(108,92,231,.15);color:var(--primary-light)}

/* ── BUTTONS ────────────────────────────── */
.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:15px;border:none;border-radius:12px;font-size:1rem;font-weight:700;cursor:pointer;transition:all .2s;text-decoration:none}
.btn-primary{background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff}
.btn-primary:hover{opacity:.9;transform:translateY(-1px)}
.btn-secondary{background:var(--surface);color:var(--text);border:1px solid rgba(108,92,231,.25)}
.btn-secondary:hover{border-color:var(--primary)}
.btn-success{background:linear-gradient(135deg,var(--success),#00a88a);color:#fff}
.btn-icon{font-size:1.2rem}
.btn-group{display:flex;flex-direction:column;gap:10px;padding:0 16px 24px}

/* ── PAYMENT PAGE ───────────────────────── */
.pay-wrap{padding:20px 16px}
.pay-status{text-align:center;padding:30px 16px}
.pay-status .icon{font-size:3rem;margin-bottom:12px}
.pay-status h2{font-size:1.2rem;font-weight:700;margin-bottom:6px}
.pay-status p{font-size:.85rem;color:var(--text-dim)}
.pay-info{background:var(--surface);border-radius:var(--radius);padding:18px;margin-bottom:14px}
.pay-row{display:flex;justify-content:space-between;align-items:center;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.05)}
.pay-row:last-child{border:none}
.pay-label{font-size:.82rem;color:var(--text-dim)}
.pay-value{font-size:.88rem;font-weight:600;text-align:right;word-break:break-all;max-width:60%}
.pay-address{background:var(--surface);border-radius:var(--radius);padding:16px;margin-bottom:14px;text-align:center}
.pay-address label{font-size:.78rem;color:var(--text-dim);display:block;margin-bottom:8px}
.pay-address .addr{font-size:.78rem;font-weight:600;word-break:break-all;padding:10px;background:var(--surface2);border-radius:8px;margin-bottom:10px;user-select:all}
.pay-qr{margin:14px auto;width:180px;height:180px;background:var(--surface2);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:.8rem;color:var(--text-dim)}

/* ── SUCCESS PAGE ───────────────────────── */
.success-wrap{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;padding:24px 16px;text-align:center}
.success-icon{width:100px;height:100px;background:linear-gradient(135deg,var(--success),#00a88a);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:3rem;margin-bottom:20px;animation:successPulse 2s ease infinite}
@keyframes successPulse{0%,100%{box-shadow:0 0 0 0 rgba(0,184,148,.4)}50%{box-shadow:0 0 0 20px rgba(0,184,148,0)}}
.success-wrap h1{font-size:1.4rem;font-weight:800;margin-bottom:8px}
.success-wrap p{font-size:.9rem;color:var(--text-dim);margin-bottom:24px;max-width:320px}

/* ── LOADING / SPINNER ──────────────────── */
.spinner{width:40px;height:40px;border:3px solid var(--surface2);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin:30px auto}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-text{text-align:center;color:var(--text-dim);font-size:.85rem;margin-top:8px}

/* ── BACK BUTTON ────────────────────────── */
.back-btn{display:inline-flex;align-items:center;gap:6px;color:var(--text-dim);font-size:.85rem;padding:8px 0;cursor:pointer;background:none;border:none;font-family:inherit}
.back-btn:hover{color:var(--text)}

/* ── TOAST ──────────────────────────────── */
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%) translateY(80px);background:var(--surface);color:var(--text);padding:12px 22px;border-radius:12px;font-size:.85rem;font-weight:600;box-shadow:var(--shadow);border:1px solid rgba(108,92,231,.2);z-index:999;opacity:0;transition:all .3s ease}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}

/* ── EMPTY STATE ────────────────────────── */
.empty-state{text-align:center;padding:40px 16px;color:var(--text-dim)}
.empty-state .icon{font-size:2.5rem;margin-bottom:12px}
.empty-state p{font-size:.9rem}

/* ── FOOTER ─────────────────────────────── */
.footer{text-align:center;padding:20px 16px 30px;font-size:.75rem;color:var(--text-dim);border-top:1px solid rgba(255,255,255,.04);margin-top:20px}

/* ── SCROLLBAR ──────────────────────────── */
::-webkit-scrollbar{width:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--surface2);border-radius:4px}