:root{
  --bg:#f6f7fb;--surface:#fff;--text:#171922;--muted:#6b7280;--line:#e7e9f1;
  --primary:#ff2b78;--primary2:#8a2be2;--dark:#0f1722;--success:#22c55e;--cyan:#0ea5b7;
  --shadow:0 12px 35px rgba(22,25,35,.08);--radius:18px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}
.topbar{position:sticky;top:0;z-index:40;background:rgba(10,16,26,.96);color:#fff;backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
.topbar-inner{max-width:1240px;margin:auto;height:72px;padding:0 22px;display:flex;align-items:center;gap:22px}.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;white-space:nowrap}.brand-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#13e8e0,#ff2b78 62%,#111);display:grid;place-items:center;font-weight:900;box-shadow:0 8px 18px rgba(255,43,120,.25)}
.nav{display:flex;gap:22px;font-size:14px;color:#d8dce5}.nav a:hover{color:#fff}.top-search{margin-left:auto;max-width:390px;flex:1;position:relative}.top-search input{width:100%;height:42px;border-radius:22px;border:1px solid #303845;background:#19212d;color:#fff;padding:0 42px 0 16px;outline:none}.top-search span{position:absolute;right:16px;top:10px;color:#9da5b4}.mobile-menu{display:none;margin-left:auto;background:none;border:0;color:#fff;font-size:26px}
.hero{background:radial-gradient(circle at 75% 30%,rgba(255,61,158,.35),transparent 24%),linear-gradient(115deg,#17246f,#6b1598 65%,#a71982);color:#fff}.hero-inner{max-width:1240px;margin:auto;padding:62px 22px;display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:30px}.eyebrow{display:inline-flex;gap:8px;align-items:center;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:8px 12px;font-size:13px}.hero h1{font-size:52px;line-height:1.08;margin:16px 0 12px}.hero h1 em{font-style:normal;color:#ff6ba4}.hero p{max-width:650px;color:#e8e9f5;font-size:18px;line-height:1.6}.hero-actions{display:flex;gap:12px;margin-top:24px}.btn{border:0;border-radius:12px;padding:13px 18px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary2));box-shadow:0 12px 22px rgba(255,43,120,.25)}.btn-light{background:#fff;color:#222}.btn-outline{background:#fff;border:1px solid var(--line)}.btn-danger{background:#fff1f3;color:#e11d48;border:1px solid #fecdd3}.btn-small{padding:9px 12px;border-radius:10px;font-size:13px}.phone-art{height:300px;display:grid;place-items:center;position:relative}.phone{width:155px;height:290px;border-radius:32px;background:#10131a;border:6px solid #252b38;transform:rotate(8deg);box-shadow:0 25px 55px rgba(0,0,0,.38);display:grid;place-items:center;font-size:68px}.orb{position:absolute;width:54px;height:54px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);display:grid;place-items:center}.orb.o1{left:5%;top:15%}.orb.o2{right:8%;top:25%}.orb.o3{left:20%;bottom:8%}
.stats{max-width:1240px;margin:-1px auto 0;background:#fff;display:grid;grid-template-columns:repeat(4,1fr);border-radius:0 0 18px 18px;box-shadow:var(--shadow);overflow:hidden}.stat{text-align:center;padding:22px;border-right:1px solid var(--line)}.stat:last-child{border-right:0}.stat strong{display:block;font-size:26px;color:var(--primary)}.stat span{font-size:13px;color:var(--muted)}
.container{max-width:1240px;margin:34px auto;padding:0 22px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-head h2{margin:0;font-size:28px}.section-head p{margin:6px 0 0;color:var(--muted)}
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:10px 15px;cursor:pointer}.chip.active{border-color:var(--primary);color:var(--primary);background:#fff5f9}.category-select{border:1px solid var(--line);background:#fff;border-radius:999px;padding:9px 14px}
.product-list{display:grid;gap:14px}.product-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 24px rgba(20,23,34,.045);padding:18px;display:grid;grid-template-columns:76px 1fr auto;gap:16px;align-items:center}.product-icon{width:72px;height:72px;border-radius:18px;background:linear-gradient(145deg,#131923,#05080d);display:grid;place-items:center;color:#fff;font-size:36px;box-shadow:inset 0 0 0 1px rgba(255,255,255,.1)}.product-title{font-size:17px;font-weight:800;line-height:1.35;margin-bottom:7px}.product-desc{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:750px}.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:11px}.tag{padding:6px 10px;border-radius:8px;background:#fbebff;color:#a21caf;font-size:12px;font-weight:700}.tag.cyan{background:#eafcff;color:#087f8c}.tag.green{background:#eaffef;color:#15803d}.product-side{text-align:right;min-width:160px}.price{font-size:24px;font-weight:900;color:var(--primary);margin-bottom:14px}.buy-btn{width:100%;color:#fff;background:linear-gradient(135deg,var(--primary),var(--primary2))}.zalo-label{font-size:11px;color:#64748b;margin-top:5px}.empty{background:#fff;padding:45px;border-radius:16px;text-align:center;color:var(--muted)}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:34px}.feature{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;gap:12px}.feature-icon{width:42px;height:42px;border-radius:12px;background:#fff0f6;color:var(--primary);display:grid;place-items:center;font-size:20px}.feature b{display:block;margin-bottom:4px}.feature span{font-size:13px;color:var(--muted)}
.footer{background:#0e1520;color:#dce2ea;margin-top:42px}.footer-inner{max-width:1240px;margin:auto;padding:34px 22px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.footer h4{margin:0 0 12px;color:#fff}.footer p,.footer a{color:#aeb7c5;font-size:14px;line-height:1.8}.copyright{border-top:1px solid #253041;text-align:center;padding:16px;color:#8f9bac;font-size:13px}
.floating-zalo{position:fixed;right:22px;bottom:22px;width:58px;height:58px;border-radius:50%;background:linear-gradient(135deg,#0284c7,#2563eb);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 12px 30px rgba(37,99,235,.35);z-index:50}
/* admin */
.admin-body{background:#f4f6fa}.admin-shell{min-height:100vh;display:grid;grid-template-columns:250px 1fr}.sidebar{background:#101824;color:#fff;padding:20px 16px;position:sticky;top:0;height:100vh}.admin-brand{padding:10px 8px 26px}.side-nav{display:grid;gap:7px}.side-nav a{padding:12px 14px;border-radius:11px;color:#c9d1dd}.side-nav a.active,.side-nav a:hover{background:linear-gradient(135deg,rgba(255,43,120,.25),rgba(138,43,226,.18));color:#fff}.admin-main{padding:26px}.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.admin-top h1{margin:0}.admin-panel{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:20px}.admin-tools{display:grid;grid-template-columns:1fr 210px auto;gap:12px;margin-bottom:18px}.field{width:100%;border:1px solid var(--line);border-radius:10px;padding:11px 12px;outline:none}.field:focus{border-color:#c084fc}.table-wrap{overflow:auto}.admin-table{width:100%;border-collapse:collapse;min-width:900px}.admin-table th,.admin-table td{text-align:left;padding:13px 10px;border-bottom:1px solid var(--line);font-size:13px}.admin-table th{color:#64748b;font-size:12px;text-transform:uppercase}.actions{display:flex;gap:7px}.status{display:inline-flex;padding:5px 8px;border-radius:999px;background:#eaffef;color:#15803d;font-weight:700;font-size:11px}.dashboard-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}.dash-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:18px}.dash-card span{color:var(--muted);font-size:13px}.dash-card strong{display:block;font-size:28px;margin-top:8px}.modal{position:fixed;inset:0;background:rgba(3,7,18,.58);display:none;align-items:center;justify-content:center;padding:20px;z-index:100}.modal.show{display:flex}.modal-card{width:min(680px,100%);max-height:90vh;overflow:auto;background:#fff;border-radius:18px;padding:22px}.modal-head{display:flex;justify-content:space-between;align-items:center}.modal-head h2{margin:0}.close{border:0;background:#f1f5f9;width:36px;height:36px;border-radius:10px;cursor:pointer}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}.form-group label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}.form-group.full{grid-column:1/-1}.form-group textarea{min-height:95px;resize:vertical}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px}.notice{background:#fff7ed;border:1px solid #fed7aa;color:#9a3412;border-radius:12px;padding:12px 14px;font-size:13px;margin-bottom:16px}
@media(max-width:900px){.nav,.top-search{display:none}.mobile-menu{display:block}.hero-inner{grid-template-columns:1fr}.phone-art{display:none}.hero h1{font-size:40px}.stats{grid-template-columns:repeat(2,1fr)}.product-card{grid-template-columns:62px 1fr}.product-icon{width:60px;height:60px}.product-side{grid-column:1/-1;display:flex;align-items:center;gap:12px;text-align:left}.price{margin:0;min-width:110px}.buy-btn{flex:1}.features{grid-template-columns:repeat(2,1fr)}.footer-inner{grid-template-columns:1fr 1fr}.admin-shell{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.side-nav{grid-template-columns:repeat(3,1fr)}.admin-main{padding:16px}.dashboard-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.topbar-inner{height:62px;padding:0 14px}.brand{font-size:18px}.brand-mark{width:34px;height:34px}.hero-inner{padding:42px 16px}.hero h1{font-size:34px}.hero p{font-size:16px}.hero-actions{flex-direction:column}.stats{margin:0;border-radius:0}.stat{padding:16px 8px}.stat strong{font-size:22px}.container{padding:0 14px;margin:26px auto}.section-head{align-items:start;flex-direction:column}.product-card{padding:14px;grid-template-columns:50px 1fr;gap:11px}.product-icon{width:50px;height:50px;border-radius:14px;font-size:27px}.product-title{font-size:15px}.product-desc{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.product-side{display:grid;grid-template-columns:1fr 1.4fr;width:100%}.price{font-size:21px}.zalo-label{grid-column:1/-1}.features{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.floating-zalo{right:14px;bottom:14px}.side-nav{grid-template-columns:1fr 1fr}.admin-top{align-items:flex-start;gap:12px}.admin-tools{grid-template-columns:1fr}.dashboard-cards{grid-template-columns:1fr 1fr}.form-grid{grid-template-columns:1fr}.form-group.full{grid-column:auto}}