:root{
  --bg:#0b1220;
  --card:#0f1b33;
  --muted:#0c172d;
  --text:#e7eefc;
  --sub:#b8c7e6;
  --line:rgba(255,255,255,.08);
  --pri:#2f7dff;
  --pri2:#00d0ff;
  --warn:#ffcc66;
  --radius:18px;
  --shadow: 0 12px 30px rgba(0,0,0,.25);

  /* cyber glow */
  --glow: 0 0 14px rgba(0,208,255,.35), 0 0 28px rgba(47,125,255,.18);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial;
  background:
    radial-gradient(1200px 600px at 20% 0%, rgba(47,125,255,.25), transparent 60%),
    radial-gradient(1000px 500px at 90% 10%, rgba(0,208,255,.18), transparent 55%),
    var(--bg);
  color:var(--text);
}

a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 16px}

/* ===== Topbar ===== */
.topbar{
  background: rgba(255,255,255,.03);
  border-bottom:1px solid var(--line);
  font-size:14px;
}
.topbar__wrap{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:10px 0}
.topbar__left{display:flex;gap:10px;align-items:center;color:var(--sub)}
.topbar__right{display:flex;gap:14px;align-items:center}
.sep{opacity:.5}

/* ===== Header ===== */
.header{
  position:sticky;top:0;z-index:10;
  background:rgba(11,18,32,.78);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.header__wrap{
  display:grid;
  grid-template-columns: 260px 1fr 260px; /* tăng cột logo cho thoáng */
  gap:14px;
  align-items:center;
  padding:14px 0;
}

.logo{
  display:flex;
  align-items:center;
  height:72px;
  gap:12px;
}
.logo img{
  height:60px;
  width:auto;
  max-width:220px;         /* chống logo quá dài */
  object-fit:contain;
  filter: drop-shadow(0 0 8px rgba(0,208,255,.25));
}
.logo span{letter-spacing:.2px}

.search{display:flex;gap:8px}
.search input{
  width:100%;
  background: rgba(255,255,255,.06);
  border:1px solid var(--line);
  border-radius: 14px;
  padding:12px 14px;
  color:var(--text);
  outline:none;
}
.search button{
  border:0; border-radius:14px;
  padding:12px 16px;
  background: linear-gradient(135deg, var(--pri), var(--pri2));
  color:#051025; font-weight:800;
  cursor:pointer;
  box-shadow: var(--glow);
}

.header__actions{display:flex;gap:10px;justify-content:flex-end}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:10px 14px;border-radius:14px;
  border:1px solid var(--line);font-weight:700;
}
.btn--primary{
  background:linear-gradient(135deg,var(--pri),var(--pri2));
  border:0;color:#061026;
  box-shadow: var(--glow);
}
.btn--ghost{background:rgba(255,255,255,.06)}

.nav{border-top:1px solid var(--line)}
.nav__wrap{display:flex;gap:12px;align-items:center;padding:10px 0}
.nav__toggle{
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  color:var(--text);
  border-radius:14px;
  padding:10px 12px;
  cursor:pointer;
  display:none;
}
.nav__menu{list-style:none;margin:0;padding:0;display:flex;gap:16px;flex-wrap:wrap}
.nav__menu a{color:var(--sub);font-weight:600}
.nav__menu a:hover{color:var(--text)}

/* ===== Hero ===== */
.hero{padding:26px 0 10px}
.hero__grid{display:grid;grid-template-columns: 1.35fr .65fr;gap:16px}
.hero__main{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding:22px;
}
.hero__badge{
  display:inline-flex;gap:8px;align-items:center;
  font-size:13px;color:#061026;font-weight:900;
  padding:6px 10px;border-radius:999px;
  background: rgba(255,204,102,.95);
}
.hero h1{margin:12px 0 8px;font-size:34px;line-height:1.15}
.hero p{margin:0 0 14px;color:var(--sub);max-width:70ch}
.hero__cta{display:flex;gap:10px;flex-wrap:wrap;margin:12px 0 12px}
.hero__meta{display:grid;grid-template-columns: repeat(3,1fr);gap:10px}
.meta-card{
  background:rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius:16px;
  padding:10px 12px;
  color:var(--sub);
  font-weight:650;
}

.hero__side{display:grid;gap:12px}
.banner{
  border-radius: var(--radius);
  overflow:hidden;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  box-shadow: var(--shadow);
}
.banner img{height: 160px;object-fit:cover;width:100%}

/* ===== Sections ===== */
.section{padding:22px 0}
.section--muted{
  background: rgba(255,255,255,.02);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line)
}
.section__head{display:flex;justify-content:space-between;align-items:end;gap:12px;margin-bottom:12px}
.section__head h2{margin:0;font-size:22px}
.link{color:var(--sub);font-weight:700}
.link:hover{color:var(--text)}

.grid{display:grid;gap:12px}
.grid--cats{grid-template-columns: repeat(6, 1fr)}
.grid--products{grid-template-columns: repeat(4, 1fr)}
.grid--services{grid-template-columns: repeat(3, 1fr)}
.grid--posts{grid-template-columns: repeat(3, 1fr)}

/* ===== Cards ===== */
.cat-card{
  background: rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius: 18px;
  padding:14px;
  display:flex;flex-direction:column;gap:6px;
  transition:.15s transform ease, .15s background ease, .15s box-shadow ease;
  box-shadow: var(--shadow);
}
.cat-card:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,.07);
  box-shadow: 0 0 18px rgba(0,208,255,.18), 0 0 36px rgba(47,125,255,.12), var(--shadow);
}
.cat-card__icon{font-size:24px}
.cat-card span{color:var(--sub);font-size:13px}

.card{
  background: rgba(255,255,255,.05);
  border:1px solid var(--line);
  border-radius: 18px;
  overflow:hidden;
  transition:.15s transform ease, .15s box-shadow ease;
  box-shadow: var(--shadow);
}
.card:hover{
  transform: translateY(-2px);
  box-shadow: 0 0 18px rgba(0,208,255,.18), 0 0 36px rgba(47,125,255,.12), var(--shadow);
}

.card__img{
  height:170px;
  background:rgba(255,255,255,.03);
}
.card__img img{
  height:170px;
  width:100%;
  object-fit:cover;
  object-position:center;
  display:block;
}

.card__body{padding:14px}
.card__title{font-weight:850; margin:0 0 6px}
.card__sub{color:var(--sub);font-size:14px;margin:0 0 10px}
.card__row{display:flex;justify-content:space-between;align-items:center;gap:10px}
.price{font-weight:900}
.tag{
  font-size:12px;color:var(--sub);
  border:1px solid var(--line);
  padding:4px 8px;border-radius:999px
}
.card__btns{display:flex;gap:8px;margin-top:10px}
.smallbtn{
  flex:1;text-align:center;
  padding:10px 10px;border-radius:14px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.04);
  font-weight:800;
}
.smallbtn--pri{
  background:linear-gradient(135deg,var(--pri),var(--pri2));
  border:0;color:#061026;
  box-shadow: var(--glow);
}

/* ===== Footer ===== */
.footer{
  padding:22px 0;
  border-top:1px solid var(--line);
  background: rgba(0,0,0,.15);
}
.footer__grid{display:grid;grid-template-columns: 1.4fr 1fr 1fr 1fr;gap:16px}
.footer h4{margin:0 0 10px}
.footer a{display:block;color:var(--sub);margin:8px 0;font-weight:650}
.footer a:hover{color:var(--text)}
.footer__brand{display:flex;gap:12px;align-items:center}
.footer__brand img{
  width:auto;height:48px;max-width:180px;
  object-fit:contain;
  filter: drop-shadow(0 0 8px rgba(0,208,255,.35));
}
.footer__small{color:var(--sub);font-size:13px;margin-top:8px}
.footer__info{color:var(--sub);margin:8px 0}

/* ===== Pages ===== */
.page{padding:18px 0 30px;}
.breadcrumb{color:var(--sub);font-size:14px;margin:8px 0 12px}
.pagehead{display:flex;justify-content:space-between;gap:12px;align-items:center;margin:10px 0 16px}
.pagehead h1{margin:0;font-size:26px}
.filters{display:flex;gap:10px;flex-wrap:wrap}
.select, .input, textarea{
  background:rgba(255,255,255,.06);
  border:1px solid var(--line);
  border-radius:14px;
  padding:10px 12px;
  color:var(--text);
  outline:none;
}

/* focus states */
.search input:focus, .select:focus, .input:focus, textarea:focus{
  border-color: rgba(0,208,255,.55);
  box-shadow: 0 0 0 4px rgba(0,208,255,.10);
}

/* ===== Product gallery thumbnails (global) ===== */
.thumbs-wrap{ margin-top:10px; }
.thumbs{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:10px;
}
.thumb{
  border:1px solid rgba(255,255,255,.12);
  border-radius:14px;
  overflow:hidden;
  background:rgba(255,255,255,.03);
  cursor:pointer;
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.thumb:hover{
  transform: translateY(-2px);
  box-shadow: 0 0 14px rgba(0,208,255,.12);
}
.thumb img{
  width:100%;
  height:90px;
  object-fit:cover;
  display:block;
}
.thumb.is-active{
  border-color: rgba(0,208,255,.55);
  box-shadow: 0 0 0 3px rgba(0,208,255,.12);
}

/* ===== Responsive ===== */
@media (max-width: 980px){
  .header__wrap{
    grid-template-columns: 200px 1fr;
    grid-template-areas:"logo actions" "search search";
  }
  .logo{grid-area:logo}
  .search{grid-area:search}
  .header__actions{grid-area:actions}

  .hero__grid{grid-template-columns: 1fr}
  .grid--cats{grid-template-columns: repeat(3, 1fr)}
  .grid--products{grid-template-columns: repeat(2, 1fr)}
  .grid--services,.grid--posts{grid-template-columns: repeat(2, 1fr)}
  .footer__grid{grid-template-columns: 1fr 1fr}
}
@media (max-width: 640px){
  .nav__toggle{display:inline-flex}
  .nav__menu{display:none;flex-direction:column;gap:10px;padding:10px 0}
  .nav__menu.is-open{display:flex}

  .hero h1{font-size:28px}
  .hero__meta{grid-template-columns:1fr}
  .grid--cats{grid-template-columns: repeat(2, 1fr)}
  .grid--products,.grid--services,.grid--posts{grid-template-columns: 1fr}
  .footer__grid{grid-template-columns:1fr}

  .thumb img{ height:74px; } /* thumbnails nhỏ lại trên mobile */
}