/* ==== Theme base ========================================================= */
*{box-sizing:border-box}html,body{margin:0;padding:0}
:root{
  --bg:#0e0f14;
  --surface:#141725;
  --surface-2:#1a1e2e;
  --line:#252a3b;
  --text:#e8eaf2;
  --muted:#aab0c1;
  --brand:#ffd400;
  --brand-ink:#161616;
  --ring:#ffd400;
  --ok:#7bf1a8;
}
body{background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial}
a:focus,button:focus,input:focus,select:focus{outline:2px solid var(--ring);outline-offset:2px;border-radius:8px}

/* ==== Header / hero / list (giữ nguyên cấu trúc) ========================= */
.site-header{position:sticky;top:0;z-index:10;background:rgba(14,15,20,.75);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid #1b2030}
.wrap{width:min(1100px,92%);margin:0 auto}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo{margin:0;font-weight:700;font-size:20px;letter-spacing:.2px}
.nav a{color:var(--text);text-decoration:none;margin-left:14px;opacity:.85}
.nav a:hover{opacity:1}

.hero{padding:28px 0 8px;border-bottom:1px solid #1b2030}
.hero-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:20px;align-items:center}
.hero h2{font-size:32px;margin:0 0 8px}
.hero p{margin:0 0 14px;color:var(--muted)}
.hero-cover{width:100%;border-radius:14px;box-shadow:0 12px 30px rgba(0,0,0,.35)}

.toolbar{display:flex;align-items:center;gap:12px;padding:18px 0}
.toolbar input[type=search],.toolbar select{
  background:var(--surface-2);color:var(--text);border:1px solid var(--line);
  padding:10px 12px;border-radius:10px;outline:0
}
.toolbar input:focus,.toolbar select:focus{border-color:var(--ring);box-shadow:0 0 0 2px rgba(255,212,0,.22)}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);border:0}

.product-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:20px 0 40px}
.product-card{
  background:linear-gradient(180deg, #171a28, #131623);
  border:1px solid var(--line);border-radius:16px;overflow:hidden;
  display:grid;grid-template-rows:auto 1fr;transition:transform .18s ease, box-shadow .18s ease
}
.product-card:hover{transform:translateY(-2px);box-shadow:0 14px 34px rgba(0,0,0,.38)}
.product-card img{width:100%;height:210px;object-fit:cover;background:#0b0e14;display:block}
.product-info{padding:12px;display:grid;gap:8px}
.product-info h2{margin:2px 0 0;font-size:18px}
.price{font-weight:800}
.meta{color:var(--muted);font-size:14px}
.btn{display:inline-flex;align-items:center;gap:8px;border:none;border-radius:12px;padding:10px 14px;cursor:pointer;font-weight:700;text-decoration:none}
.btn.primary{background:var(--brand);color:var(--brand-ink)}
.btn.secondary{background:var(--surface-2);color:var(--text);border:1px solid var(--line)}
.btn:hover{filter:brightness(1.02)}
.actions{display:flex;gap:8px;flex-wrap:wrap}

.contact .note{color:var(--muted)}
.site-footer{border-top:1px solid #1b2030;padding:18px 0;color:var(--muted)}

/* ==== Modal refined ====================================================== */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.6);backdrop-filter:blur(4px);padding:20px}
.modal[aria-hidden=false]{display:flex}
.modal-content{
  background:linear-gradient(180deg,#15192a,#111423);
  border:1px solid #262b3e; border-radius:18px;
  width:min(980px,96%); max-height:92vh; overflow:auto; position:relative;
  box-shadow:0 24px 60px rgba(0,0,0,.55)
}
#modalBody{padding:16px}
.close{position:absolute;top:10px;right:10px;background:#212538;color:#dfe1ee;border:1px solid #2b3050;border-radius:10px;padding:6px 10px;cursor:pointer}
.close:hover{filter:brightness(1.06)}

/* Header trong modal */
.modal-titlebar{display:flex;align-items:center;gap:10px;margin:2px 6px 14px}
.modal-title{font-size:22px;margin:0}
.sku-badge{margin-left:auto;background:#20243a;border:1px solid #2a3050;color:#cdd2e3;border-radius:999px;padding:4px 10px;font-size:12px}

/* Grid */
.modal-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
.modal-info{display:grid;gap:12px}
.info-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px;display:grid;gap:8px}
.info-row{display:grid;grid-template-columns:90px 1fr;gap:10px;font-size:15px}
.info-row .label{color:var(--muted)}
.price-card{display:flex;align-items:center;justify-content:space-between;background:linear-gradient(180deg,#222843,#1a2038);border:1px solid #2c3556;border-radius:14px;padding:12px}
.big-price{font-weight:900;font-size:20px}
.sec-note{color:var(--muted);font-size:13px}

/* ==== Media column ======================================================= */
.media-col{display:grid;gap:12px}
.media-section{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px;display:grid;gap:10px}
.media-title{margin:0;font-size:14px;color:#c9cede;opacity:.95}

/* Carousel (ảnh) */
.carousel{position:relative;border-radius:12px;overflow:hidden;background:#0b0e14}
.carousel-viewport{overflow:hidden;touch-action:pan-y}
.carousel-track{display:flex;transition:transform .25s ease;will-change:transform}
.carousel-slide{min-width:100%;height:320px;background:#0b0e14;display:flex;align-items:center;justify-content:center}
.carousel-slide img{width:100%;height:100%;object-fit:cover;display:block}

/* arrows */
.carousel-nav{position:absolute;inset:0;display:flex;align-items:center;justify-content:space-between;pointer-events:none}
.carousel-btn{pointer-events:auto;appearance:none;border:none;border-radius:999px;background:rgba(0,0,0,.45);color:#fff;width:38px;height:38px;margin:0 8px;cursor:pointer;backdrop-filter:blur(2px)}
.carousel-btn:hover{background:rgba(0,0,0,.6)}

/* dots + thumbs */
.carousel-dots{display:flex;gap:6px;justify-content:center}
.carousel-dot{width:8px;height:8px;border-radius:999px;background:#4b5065;border:0}
.carousel-dot[aria-current=true]{background:var(--brand)}
.thumbs{display:grid;grid-auto-flow:column;gap:8px;overflow:auto;padding-bottom:6px;margin-top:4px}
.thumb{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#0b0e14;width:72px;height:56px;cursor:pointer;opacity:.75}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.thumb[aria-current=true]{outline:2px solid var(--brand);opacity:1}

/* Video block */
.video-wrap{position:relative;border-radius:12px;overflow:hidden;background:#000}
.video-wrap iframe{width:100%;height:260px;border:0;display:block}
.video-switch{display:flex;gap:6px;flex-wrap:wrap;justify-content:center}
.video-btn{border:1px solid #2b2f40;background:#202433;color:#d7d9e3;border-radius:999px;padding:6px 10px;cursor:pointer;font-weight:600}
.video-btn[aria-current=true]{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}

/* Responsive */
@media(max-width:900px){.product-list{grid-template-columns:repeat(2,1fr)}.hero-inner{grid-template-columns:1fr}}
@media(max-width:560px){
  .product-list{grid-template-columns:1fr}
  .modal-grid{grid-template-columns:1fr}
  .carousel-slide{height:240px}
  .video-wrap iframe{height:220px}
}