:root{
  --brand:#2b6ef2;--brand-600:#1f5ae0;--ink:#0f172a;--muted:#64748b;--bg:#f8fafc;--card:#fff;
  --ring:rgba(43,110,242,.35);--shadow:0 10px 20px rgba(2,6,23,.06),0 6px 8px rgba(2,6,23,.04);--radius:14px;--danger:#dc2626
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
a{color:inherit;text-decoration:none}
.container{max-width:1200px;margin-inline:auto;padding-inline:16px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;border:1px solid #e2e8f0;background:#fff;box-shadow:var(--shadow);font-weight:600;cursor:pointer}
.btn.primary{background:var(--brand);border-color:var(--brand);color:white}
.badge{display:inline-flex;align-items:center;gap:8px;background:#e8f1ff;color:#1746a2;padding:6px 10px;border-radius:999px;font-weight:600;font-size:12px}
.pill{background:#f1f5ff;color:#0b2a6a;border:1px solid #dbe3f7;padding:6px 10px;border-radius:999px;font-weight:700}

/* Top bar */
.topbar{background:linear-gradient(180deg,var(--brand) 0%, #1a4ccf 100%);color:white}
.topbar-inner{display:flex;align-items:center;gap:16px;padding:10px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800}
.logo-mark{width:34px;height:34px;border-radius:8px;background:white;display:grid;place-items:center;color:var(--brand);font-weight:900}

/* Search */
.search{flex:1;display:flex;align-items:center;gap:10px;max-width:600px}
.search .input{flex:1;display:flex;align-items:center;gap:10px;background:white;border-radius:999px;padding:10px 14px;border:1px solid #dbe3f0;max-width:400px}
.search input{border:none;outline:none;width:100%;font-size:14px}
.quick-actions{display:flex;align-items:center;gap:8px}

/* Primary actions */
.actions{display:flex;align-items:center;gap:10px}

/* Mega nav */
.nav{background:white;border-bottom:1px solid #e2e8f0}
.nav-inner{display:flex;align-items:center;gap:24px;height:50px}
.nav a{font-weight:600;color:#0b2a6a;opacity:.9;cursor:pointer;user-select:none}
.nav a:hover{opacity:1}
.nav a.active{opacity:1;color:var(--brand);border-bottom:2px solid var(--brand)}

/* Layout */
main{padding:18px 0}
.grid{display:grid;grid-template-columns:260px 1fr;gap:18px}
@media(max-width:960px){.grid{grid-template-columns:1fr}}

/* Left panel (subcategory) */
aside.left{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);display:none}
aside.left.show{display:block}
.left .head{padding:14px;border-bottom:1px solid #eef2f7;font-weight:900;color:#0b2a6a}
.left .nav{display:flex;flex-direction:column;padding:8px}
.left .nav a{display:flex;align-items:center;gap:10px;padding:12px;border-radius:12px;color:#0b2a6a;font-weight:600;cursor:pointer}
.left .nav a:hover{background:#f1f5ff}
.left .nav a.active{background:#eef4ff}

/* Right side */
section.right{display:grid;gap:16px}
.chip-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
@media(max-width:720px){.chip-row{grid-template-columns:1fr 1fr}}
.chip{padding:14px 16px;background:#fff;border:1px solid #e5eaf3;border-radius:12px;box-shadow:var(--shadow);font-weight:800;color:#0b2a6a;display:flex;justify-content:space-between;align-items:center}

.section{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow)}
.section .head{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid #eef2f7}
.section .h{font-size:18px;font-weight:900;color:#0b2a6a}

/* Product list (horizontal scroller) */
.products{display:grid;grid-auto-flow:column;grid-auto-columns:220px;gap:14px;overflow-x:auto;padding:14px 16px 22px}
.card{background:#fff;border:1px solid #e5eaf3;border-radius:16px;overflow:hidden;display:flex;flex-direction:column;position:relative;cursor:pointer}
.thumb{aspect-ratio:1/1;background:#f2f6ff;display:grid;place-items:center}
.thumb img{max-width:100%;max-height:100%;object-fit:contain;border-radius:10px}
.meta{padding:10px 12px;display:grid;gap:6px}
.title{font-size:14px;font-weight:700;color:#0b2a6a;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.price{font-weight:900;color:#0652ff}
.small{font-size:12px;color:#64748b}
.badge-off{position:absolute;top:8px;left:8px;background:#fee2e2;color:#b91c1c;padding:4px 8px;border-radius:8px;font-weight:800;font-size:12px}
.strike{color:#94a3b8;text-decoration:line-through}

footer{color:#64748b;font-size:14px}
/* === Nav full-width, các mục chia đều === */
.nav .nav-inner{
  display: grid;
  grid-auto-flow: column;     /* xếp theo cột, tự dàn ngang */
  grid-auto-columns: 1fr;     /* mỗi mục chiếm đều 1 phần */
  align-items: center;
  gap: 0;                      /* bỏ khoảng cách để căng sát đều */
}

.nav .nav-link{
  text-align: center;          /* chữ ở giữa */
  padding: 0 8px;              /* đệm nhẹ để dễ bấm */
  white-space: nowrap;         /* không xuống dòng mỗi mục */
}

/* Viền active nếu bạn đang dùng border-bottom */
.nav .nav-link.active{
  border-bottom: 2px solid var(--brand);
  color: var(--brand);
}

/* Mobile: cho phép kéo ngang danh mục */
@media (max-width: 960px){
  .nav .nav-inner{
    display: flex;             /* về flex để kéo ngang mượt hơn */
    gap: 16px;
    overflow-x: auto;
    scrollbar-width: thin;
  }
  .nav .nav-link{
    flex: 0 0 auto;            /* mỗi mục co giãn theo nội dung */
  }
}