/* MT Bidding — header.css */
/* ===== HEADER: topbar đỏ Minh Trung + thanh chính vàng TGDD ===== */
.header{position:sticky;top:0;z-index:60;box-shadow:var(--sh-2)}
.topbar{background:var(--brand-grad);color:#fff;font-size:12px}
.topbar .wrap{display:flex;align-items:center;gap:14px;height:34px}
.topbar a{opacity:.92}.topbar a:hover{opacity:1;text-decoration:underline}
.topbar .sep{width:1px;height:12px;background:rgba(255,255,255,.35)}
.topbar .right{margin-left:auto;display:flex;align-items:center;gap:14px}
.topbar .dot{width:7px;height:7px;border-radius:50%;background:#2BE07C;box-shadow:0 0 0 3px rgba(43,224,124,.3);display:inline-block}

.headmain{background:var(--yellow);color:var(--yellow-ink);padding:10px 0 12px}
.headmain .wrap{display:flex;align-items:center;gap:18px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo{display:block;background:var(--logo) no-repeat center/contain;background-origin:content-box;box-sizing:border-box;aspect-ratio:141/106;width:auto}
.brand .logo{height:60px;padding:5px 4px;filter:drop-shadow(0 1px 2px rgba(0,0,0,.18))}
.brand .bname b{display:block;font-size:19px;letter-spacing:.4px;line-height:1.1;color:#B3141A}
.brand .bname span{font-size:10px;letter-spacing:1.2px;text-transform:uppercase;color:#7A5A00}
.searchbox{flex:1;min-width:0}
.searchbar{background:#fff;border:2px solid rgba(0,0,0,.05);border-radius:var(--r-sm);padding:2px 2px 2px 4px;display:flex;align-items:center;box-shadow:0 1px 2px rgba(0,0,0,.08)}
.searchbar input{flex:1;min-width:0;border:0;outline:0;padding:9px 10px;background:transparent;color:#1F2328;font-size:13.5px}
.searchbar input::placeholder{color:#9AA1A9}
.searchbar .btn-search{background:var(--brand-grad);color:#fff;padding:9px 22px;border-radius:5px;display:flex;align-items:center;gap:6px;font-weight:700}
.searchbar .btn-search:hover{filter:brightness(1.06)}
.hotkeys{display:flex;gap:14px;margin-top:6px;font-size:11.5px;flex-wrap:wrap}
.hotkeys button{color:#6B4E00}.hotkeys button:hover{color:#B3141A;text-decoration:underline}
.headact{display:flex;align-items:center;gap:4px;flex:0 0 auto}
.hact{position:relative;display:flex;align-items:center;gap:5px;color:#3A2E00;font-weight:600;font-size:12.5px;padding:9px 11px;border-radius:8px;transition:background .15s;white-space:nowrap}
.hact:hover{background:rgba(0,0,0,.08)}
.hact em{font-style:normal;background:var(--mt-red);color:#fff;font-size:11px;font-weight:700;min-width:18px;height:18px;padding:0 5px;border-radius:9px;display:grid;place-items:center}
.iconbtn{position:relative;width:42px;height:42px;border-radius:10px;display:grid;place-items:center;color:#3A2E00;transition:background .15s}
.iconbtn:hover{background:rgba(0,0,0,.08)}
.iconbtn .badge{position:absolute;top:2px;right:2px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--mt-red);color:#fff;font-size:11px;font-weight:700;display:grid;place-items:center;border:2px solid var(--yellow)}
.btn-post{background:var(--brand-grad);color:#fff;font-weight:700;padding:10px 16px;border-radius:var(--r-sm);display:flex;align-items:center;gap:6px;white-space:nowrap;box-shadow:0 2px 6px rgba(179,20,26,.35)}
.btn-post:hover{filter:brightness(1.06)}

/* ===== NAV: thanh danh mục nền vàng ===== */
.catnav{background:var(--yellow-2);border-bottom:1px solid rgba(0,0,0,.08);position:sticky;top:var(--header-h);z-index:55;box-shadow:0 2px 4px rgba(0,0,0,.06)}
.catnav .wrap{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.catnav .wrap::-webkit-scrollbar{display:none}
.catnav button{padding:11px 14px;font-size:13.5px;font-weight:700;color:#4A3B00;white-space:nowrap;border-bottom:3px solid transparent}
.catnav button:hover{color:#B3141A}
.catnav button[aria-selected="true"]{color:#B3141A;border-bottom-color:#B3141A}
.catnav .n{display:inline-block;margin-left:5px;background:rgba(255,255,255,.65);border:1px solid rgba(0,0,0,.12);color:#6B4E00;font-size:10.5px;font-weight:700;padding:0 5px;border-radius:9px}