/* ==========================================================================
   components.css — Nút bấm, card/grid, banner slider, modal sản phẩm,
   lightbox, form, timeline, steps, details, hero.
   ========================================================================== */

/* --- 1. HERO ------------------------------------------------------------- */
.hero{
  padding:var(--sp-7) 0 var(--sp-6);text-align:center;
  background:radial-gradient(ellipse at 50% 0,color-mix(in srgb,var(--gold) 22%,transparent),transparent 65%);
}
.hero h1{font-size:clamp(38px,11vw,64px);line-height:1.3;margin:8px 0 var(--sp-4);text-transform:uppercase;letter-spacing:.06em;font-weight:700}
.hero h1 span{color:var(--gold)}
.hero p{color:var(--mut);max-width:520px;margin:0 auto var(--sp-5);font-size:17px}
.badges{display:flex;flex-wrap:wrap;gap:var(--sp-2);justify-content:center;margin-bottom:var(--sp-5)}
.badges b{
  border:1px solid var(--bd);background:var(--bg2);border-radius:99px;padding:7px 15px;font-size:13.5px;font-weight:600;
  transition:border-color var(--dur-s) var(--ease),transform var(--dur-s) var(--ease);
}
.badges b:hover{border-color:var(--gold-line);transform:translateY(-2px)}

/* --- 2. NÚT BẤM (micro-interaction) -------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--gold);color:var(--on);border:0;border-radius:99px;padding:14px 30px;
  font-size:15.5px;font-weight:800;cursor:pointer;text-decoration:none;letter-spacing:.01em;
  position:relative;overflow:hidden;isolation:isolate;
  transition:transform var(--dur-s) var(--ease),box-shadow var(--dur-s) var(--ease),background-color var(--dur-s) var(--ease),opacity var(--dur-s) var(--ease);
  box-shadow:0 6px 18px color-mix(in srgb,var(--gold) 26%,transparent);
}
.btn::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(120deg,transparent 20%,color-mix(in srgb,#fff 34%,transparent) 50%,transparent 80%);
  transform:translateX(-120%);transition:transform .55s var(--ease-out);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 28px color-mix(in srgb,var(--gold) 34%,transparent)}
.btn:hover::after{transform:translateX(120%)}
.btn:active{transform:translateY(0) scale(.975)}
.btn.alt{background:none;color:var(--gold);border:1px solid var(--gold);box-shadow:none}
.btn.alt:hover{background:var(--gold-soft);box-shadow:none;transform:translateY(-2px)}
.btn.sm{padding:10px 20px;font-size:14px}
.btn:focus-visible{outline:2px solid var(--tx);outline-offset:3px}

/* --- 3. BANNER / SLIDER HERO --------------------------------------------- */
.banner{
  position:relative;margin:var(--sp-5) 0 0;
  border-radius:var(--r-xl);overflow:hidden;
  background:var(--bg2);
  box-shadow:var(--sh-2);
  isolation:isolate;
  touch-action:pan-y;
}
.banner-track{position:relative;height:clamp(300px,58vh,520px)}
.slide{
  position:absolute;inset:0;display:flex;align-items:flex-end;
  opacity:0;visibility:hidden;
  transition:opacity .72s var(--ease),transform .72s var(--ease);
  transform:scale(1.04);
  will-change:opacity,transform;
}
.slide.active{opacity:1;visibility:visible;transform:scale(1);z-index:1}
.slide.prev{transform:scale(1.04) translateX(3%)}
.slide.next{transform:scale(1.04) translateX(-3%)}
/* Ảnh nền + parallax (dùng biến --py để không xung đột transition) */
.slide-bg{
  position:absolute;inset:-8% 0;background-size:cover;background-position:center 45%;
  transform:scale(1.1) translate3d(0,var(--py,0px),0);will-change:transform;
}
/* Overlay tối gradient để chữ dễ đọc */
.slide::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(10,6,6,.92) 0%,rgba(10,6,6,.74) 34%,rgba(10,6,6,.42) 62%,rgba(10,6,6,.26) 100%);
  pointer-events:none;
}
.slide-body{
  position:relative;z-index:2;width:100%;
  padding:var(--sp-5) calc(var(--gutter) + 52px) var(--sp-6);
  color:#fff;
}
.slide-kicker{
  display:inline-flex;align-items:center;gap:7px;
  font-size:11px;font-weight:800;letter-spacing:.2em;text-transform:uppercase;
  color:#fff;background:color-mix(in srgb,var(--gold) 82%,#000);
  border-radius:99px;padding:6px 13px;margin-bottom:var(--sp-3);
  box-shadow:0 4px 14px rgba(0,0,0,.28);
}
.slide-kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:#fff;opacity:.9}
.slide h2{
  font-family:var(--ff-display);font-size:clamp(28px,6.4vw,46px);line-height:1.28;
  letter-spacing:.01em;text-transform:none;color:#fff;margin:0 0 var(--sp-2);
  display:block;max-width:22ch;text-wrap:balance;
}
.slide h2::after{display:none}
.slide p{color:rgba(255,255,255,.88);margin:0 0 var(--sp-4);max-width:46ch;font-size:15.5px}
.slide-cta{display:flex;flex-wrap:wrap;gap:var(--sp-2)}
.slide .btn{background:#fff;color:#140d0d;box-shadow:0 8px 22px rgba(0,0,0,.3)}
.slide .btn::after{background:linear-gradient(120deg,transparent 20%,color-mix(in srgb,var(--gold) 30%,transparent) 50%,transparent 80%)}
.slide .btn.alt{background:color-mix(in srgb,#fff 12%,transparent);color:#fff;border-color:rgba(255,255,255,.5)}
.slide .btn.alt:hover{background:color-mix(in srgb,#fff 22%,transparent)}

/* Nút mũi tên */
.banner-arrow{
  position:absolute;top:50%;transform:translateY(-50%);z-index:4;
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  background:color-mix(in srgb,#000 34%,transparent);
  border:1px solid rgba(255,255,255,.28);
  color:#fff;font-size:19px;cursor:pointer;
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:background-color var(--dur-s) var(--ease),transform var(--dur-s) var(--ease),opacity var(--dur-s) var(--ease);
}
.banner-arrow:hover{background:var(--gold);border-color:var(--gold)}
.banner-arrow:active{transform:translateY(-50%) scale(.9)}
.banner-arrow.prev{left:10px}
.banner-arrow.next{right:10px}
.banner-arrow svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}

/* Dots */
.banner-dots{
  position:absolute;bottom:var(--sp-3);left:0;right:0;z-index:4;
  display:flex;justify-content:center;gap:8px;
}
.banner-dots button{
  width:9px;height:9px;padding:0;border-radius:99px;border:0;cursor:pointer;
  background:rgba(255,255,255,.42);
  transition:width var(--dur) var(--ease),background-color var(--dur) var(--ease),transform var(--dur-s) var(--ease);
}
.banner-dots button:hover{background:rgba(255,255,255,.75);transform:scale(1.15)}
.banner-dots button.on{width:26px;background:#fff}
.banner-count{
  position:absolute;top:var(--sp-3);right:var(--sp-3);z-index:4;
  font-size:12px;font-weight:700;letter-spacing:.14em;color:rgba(255,255,255,.86);
  background:color-mix(in srgb,#000 32%,transparent);border:1px solid rgba(255,255,255,.2);
  padding:5px 11px;border-radius:99px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  font-variant-numeric:tabular-nums;
}
/* Thanh tiến trình auto-play */
.banner-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(255,255,255,.16);z-index:4}
.banner-progress i{display:block;height:100%;width:0;background:var(--gold);box-shadow:0 0 10px var(--gold)}

/* --- 4. GRID / CARD ----------------------------------------------------- */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-3)}
.tile{
  background:var(--card);border:1px solid var(--bd);border-radius:var(--r-lg);padding:var(--sp-4);
  box-shadow:var(--sh-1);
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.tile:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--gold-line)}
.tile .pic{
  aspect-ratio:4/3;border-radius:var(--r-md);margin-bottom:var(--sp-3);
  background:linear-gradient(135deg,var(--bg2),var(--gold));
  display:grid;place-items:center;font-size:34px;color:var(--on);
  box-shadow:inset 0 0 0 1px color-mix(in srgb,#fff 14%,transparent);
  transition:transform var(--dur) var(--ease),border-radius var(--dur) var(--ease);
}
.tile:hover .pic{transform:scale(1.02);border-radius:var(--r-sm)}
.tile h3{margin:0 0 5px;font-size:17px;font-weight:700;line-height:1.34}
.tile p{margin:0;color:var(--mut);font-size:14px}

/* Card sản phẩm – click mở modal */
.tile.prod{cursor:pointer;text-align:left;width:100%;font:inherit;color:inherit;display:block}
.tile.prod .pic{position:relative;overflow:hidden;background:#12100f}
.tile.prod .t-img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;display:block;
  transition:transform .5s var(--ease-out),filter var(--dur) var(--ease);
}
.tile.prod:hover .t-img{transform:scale(1.06)}
.tile.prod .t-glyph{line-height:1}
.tile.prod .t-name{display:block;margin:0 0 5px;font-family:var(--ff-display);font-size:17px;font-weight:700;line-height:1.36}
.tile.prod .t-desc{display:block;margin:0;color:var(--mut);font-size:14px}
.tile.prod .pic .tagline{
  position:absolute;left:9px;top:9px;z-index:2;
  font-size:10.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;
  background:color-mix(in srgb,#000 45%,transparent);color:#fff;padding:4px 9px;border-radius:99px;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
}
.tile.prod .pic .peek{
  position:absolute;inset:auto 0 0 0;z-index:2;padding:9px 12px;font-size:12.5px;font-weight:700;color:#fff;
  background:linear-gradient(to top,rgba(10,6,6,.9),transparent);
  opacity:0;transform:translateY(100%);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.tile.prod:hover .pic .peek{opacity:1;transform:none}
.tile.prod:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* --- 5. MODAL CHI TIẾT SẢN PHẨM ---------------------------------------- */
.modal{
  position:fixed;inset:0;z-index:100;display:grid;place-items:center;
  padding:var(--sp-4);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.modal.open{opacity:1;visibility:visible;pointer-events:auto}
.modal-overlay{
  position:absolute;inset:0;background:rgba(8,5,5,.72);
  backdrop-filter:blur(7px);-webkit-backdrop-filter:blur(7px);
}
.modal-card{
  position:relative;z-index:1;width:min(920px,100%);max-height:min(88vh,900px);
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--bd);border-radius:var(--r-xl);
  box-shadow:var(--sh-3);overflow:hidden;
  transform:scale(.93) translateY(14px);opacity:0;
  transition:transform var(--dur) var(--ease-out),opacity var(--dur) var(--ease-out);
}
.modal.open .modal-card{transform:none;opacity:1}
.modal-head{
  display:flex;align-items:flex-start;justify-content:space-between;gap:var(--sp-3);
  padding:var(--sp-4) var(--sp-5) var(--sp-3);
  border-bottom:1px solid var(--bd);flex:none;
}
.modal-head h3{margin:0;font-size:22px;font-weight:700;line-height:1.34}
.modal-head .m-type{color:var(--gold);font-size:11.5px;font-weight:800;letter-spacing:.16em;text-transform:uppercase;margin:0 0 5px}
.modal-close{
  flex:none;width:38px;height:38px;border-radius:50%;border:1px solid var(--bd);background:var(--bg);
  color:var(--tx);font-size:20px;line-height:1;cursor:pointer;display:grid;place-items:center;
  transition:background-color var(--dur-s) var(--ease),color var(--dur-s) var(--ease),transform var(--dur-s) var(--ease),border-color var(--dur-s) var(--ease);
}
.modal-close:hover{background:var(--gold);border-color:var(--gold);color:var(--on);transform:rotate(90deg)}
.modal-body{
  padding:var(--sp-5);overflow-y:auto;-webkit-overflow-scrolling:touch;
  overscroll-behavior:contain;flex:1 1 auto;
}
.m-gallery{display:grid;grid-template-columns:190px 1fr;gap:var(--sp-3);margin-bottom:var(--sp-5)}
/* Thumbnails xếp lưới 2 cột để nhiều ảnh không đẩy nội dung modal xuống */
.m-thumbs{display:grid;grid-template-columns:repeat(2,88px);gap:var(--sp-2);align-content:start}
.m-thumb{
  width:88px;aspect-ratio:1;border-radius:var(--r-sm);border:1px solid var(--bd);overflow:hidden;cursor:pointer;
  background:var(--bg2);padding:0;transition:border-color var(--dur-s) var(--ease),transform var(--dur-s) var(--ease),opacity var(--dur-s) var(--ease);
  opacity:.72;
}
.m-thumb:hover{opacity:1;transform:translateY(-2px)}
.m-thumb.on{border-color:var(--gold);opacity:1;box-shadow:0 0 0 2px var(--gold-soft)}
.m-thumb img{width:100%;height:100%;object-fit:cover}
.m-main{
  position:relative;border-radius:var(--r-md);overflow:hidden;background:var(--bg2);
  aspect-ratio:4/3;display:grid;place-items:center;max-height:min(42vh,340px);
}
/* Ảnh chính: contain để không méo, nền ảnh đen hòa với khung */
.m-main img{width:100%;height:100%;object-fit:contain}
.m-main .m-zoom{
  position:absolute;right:10px;bottom:10px;
  background:color-mix(in srgb,#000 45%,transparent);color:#fff;border:1px solid rgba(255,255,255,.3);
  border-radius:99px;padding:6px 12px;font-size:12px;font-weight:700;cursor:pointer;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  transition:background-color var(--dur-s) var(--ease);
}
.m-main .m-zoom:hover{background:var(--gold)}
/* Chất liệu / loại sản phẩm (thay cho khối giá) */
.m-mat{
  font-family:var(--ff-display);font-size:21px;font-weight:700;color:var(--gold);
  margin:0 0 var(--sp-4);letter-spacing:.01em;line-height:1.36;
}
.m-desc{color:var(--mut);margin:0 0 var(--sp-5);font-size:15.5px}
.m-specs{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--sp-2) var(--sp-4);margin:0 0 var(--sp-5)}
.m-specs div{display:flex;justify-content:space-between;gap:var(--sp-3);border-bottom:1px dashed var(--bd);padding-bottom:8px;font-size:14.5px}
.m-specs dt,.m-specs b{color:var(--mut);font-weight:600;flex:none}
.m-specs span,.m-specs i{font-style:normal;font-weight:700;text-align:right}
.m-details{margin:0 0 var(--sp-5);padding:0;list-style:none;display:grid;gap:7px}
.m-details li{position:relative;padding-left:22px;color:var(--mut);font-size:14.5px}
.m-details li::before{content:"✦";position:absolute;left:0;top:-1px;color:var(--gold);font-size:12px}
.m-sec-t{
  font-family:var(--ff-body);font-size:11.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
  font-weight:800;margin:0 0 var(--sp-2);
}
.m-foot{
  display:flex;flex-wrap:wrap;gap:var(--sp-2);align-items:center;
  padding:var(--sp-3) var(--sp-5) var(--sp-5);border-top:1px solid var(--bd);flex:none;background:var(--card);
}
.m-foot .m-note{font-size:12.5px;color:var(--mut);margin-right:auto}

/* Lightbox xem ảnh lớn */
.lightbox{
  position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:var(--sp-4);
  background:rgba(6,4,4,.92);
  opacity:0;visibility:hidden;pointer-events:none;transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);
}
.lightbox.open{opacity:1;visibility:visible;pointer-events:auto}
.lightbox img{max-width:min(1100px,94vw);max-height:88vh;border-radius:var(--r-md);box-shadow:var(--sh-3);object-fit:contain}
.lightbox .lb-close{
  position:absolute;top:16px;right:16px;width:42px;height:42px;border-radius:50%;
  background:color-mix(in srgb,#fff 14%,transparent);border:1px solid rgba(255,255,255,.3);color:#fff;
  font-size:21px;cursor:pointer;display:grid;place-items:center;transition:background-color var(--dur-s) var(--ease);
}
.lightbox .lb-close:hover{background:var(--gold);border-color:var(--gold)}

/* --- 6. FORM / CÁC SECTION KHÁC ----------------------------------------- */
form{
  background:var(--card);border:1px solid var(--bd);border-radius:var(--r-lg);padding:var(--sp-4);
  display:grid;gap:var(--sp-3);box-shadow:var(--sh-1);
}
label{display:grid;gap:6px;font-size:13.5px;font-weight:600}
label>span{color:var(--mut)}
input,select,textarea{
  font:inherit;color:var(--tx);background:var(--bg);border:1px solid var(--bd);border-radius:var(--r-sm);
  padding:12px 13px;width:100%;
  transition:border-color var(--dur-s) var(--ease),box-shadow var(--dur-s) var(--ease),background-color var(--dur-s) var(--ease);
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--gold);box-shadow:0 0 0 3px var(--gold-soft);
}
textarea{resize:vertical;min-height:60px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp-3)}
.ref{font-size:12px;letter-spacing:.12em;color:var(--gold);min-height:18px;font-weight:600}
/* Thông báo trạng thái gửi – thay cho màn #done */
#formStatus{
  margin:var(--sp-3) 0 0;padding:13px 16px;border-radius:var(--r-md);
  font-size:14.5px;font-weight:600;line-height:1.5;
  display:flex;align-items:center;gap:10px;
  border:1px solid var(--bd);background:var(--card);color:var(--mut);
  animation:statusIn .3s var(--ease-out) both;
}
#formStatus::before{
  content:"";width:9px;height:9px;border-radius:50%;flex:none;background:var(--mut);
}
#formStatus[data-kind="ok"]{border-color:color-mix(in srgb,#2e7d32 45%,transparent);color:#2e7d32}
#formStatus[data-kind="ok"]::before{background:#2e7d32}
#formStatus[data-kind="err"]{border-color:var(--gold);background:var(--gold-soft);color:var(--gold)}
#formStatus[data-kind="err"]::before{background:var(--gold)}
#formStatus[data-kind="wait"]::before{background:var(--gold);animation:pulse 1.1s ease-in-out infinite}
@keyframes statusIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
@keyframes pulse{0%,100%{opacity:.35}50%{opacity:1}}
@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]) #formStatus[data-kind="ok"]{color:#7fd18a;border-color:rgba(127,209,138,.4)}
  :root:not([data-theme="light"]) #formStatus[data-kind="ok"]::before{background:#7fd18a}
}
:root[data-theme="dark"] #formStatus[data-kind="ok"]{color:#7fd18a;border-color:rgba(127,209,138,.4)}
:root[data-theme="dark"] #formStatus[data-kind="ok"]::before{background:#7fd18a}
.acts{display:flex;flex-wrap:wrap;gap:var(--sp-2)}
.tl{border-left:2px solid var(--gold);margin:var(--sp-2) 0 var(--sp-4) 6px;padding-left:var(--sp-4)}
.tl div{margin-bottom:var(--sp-3);position:relative}
.tl div::before{
  content:"";position:absolute;left:calc(-1 * var(--sp-4) - 7px);top:6px;width:10px;height:10px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 4px var(--gold-soft);
}
.tl b{color:var(--gold);display:block;font-family:var(--ff-body);font-size:13px;letter-spacing:.08em;margin-bottom:2px}
.quote{
  text-align:center;font-family:var(--ff-display);font-size:26px;font-style:italic;color:var(--gold);
  margin:var(--sp-6) 0 0;padding:var(--sp-5) 0;border-top:1px solid var(--bd);
  letter-spacing:.01em;
}
.steps{counter-reset:s;display:grid;gap:var(--sp-3)}
.steps .tile{position:relative;padding-left:60px}
.steps .tile::before{
  counter-increment:s;content:counter(s);position:absolute;left:14px;top:15px;width:32px;height:32px;border-radius:50%;
  background:var(--gold);color:var(--on);display:grid;place-items:center;font-weight:800;font-size:14px;
  box-shadow:0 4px 12px color-mix(in srgb,var(--gold) 30%,transparent);
}
details{
  background:var(--card);border:1px solid var(--bd);border-radius:var(--r-md);padding:var(--sp-3) var(--sp-4);
  margin-bottom:var(--sp-2);box-shadow:var(--sh-1);
  transition:border-color var(--dur-s) var(--ease),box-shadow var(--dur-s) var(--ease);
}
details[open]{border-color:var(--gold-line);box-shadow:var(--sh-2)}
summary{
  cursor:pointer;font-weight:700;font-family:var(--ff-body);position:relative;padding-right:26px;list-style:none;
  transition:color var(--dur-s) var(--ease);
}
summary::-webkit-details-marker{display:none}
summary::after{
  content:"+";position:absolute;right:0;top:-2px;font-size:20px;font-weight:400;color:var(--gold);
  transition:transform var(--dur) var(--ease);
}
details[open] summary::after{transform:rotate(45deg)}
summary:hover{color:var(--gold)}
details p{margin:10px 0 0;color:var(--mut)}