/* ================= ALASKA – giao diện "khói san hô" (nền đen, khung khói chuyển động) =================
   Nạp SAU CSS gốc của từng trang, chỉ ghi đè. Bỏ tệp này ra là web về giao diện cũ. */
:root{
  --primary:#FF8A73; --accent:#FF8A73; --ink:#fff; --muted:#a3a3a8; --bg:#000; --card:#0c0c0d; --r:20px;
  --line:rgba(255,255,255,.12); --line-2:rgba(255,255,255,.2);
  --coral-a:#FF8A73; --coral-b:#F0605A; --place:#808081;
  --ease:cubic-bezier(.22,.8,.24,1);
}
html,body{background:#000;color:#fff}
body{font-family:"Inter","Inter Fallback",system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--coral-a)}
h1,h2,h3{font-weight:600;letter-spacing:-.02em}
.lede,.note,.meta,.card p,.crumbs,.crumbs a{color:var(--muted)}
:focus-visible{outline-color:var(--coral-a)}

/* nút */
.btn{color:#fff;background:linear-gradient(180deg,var(--coral-a),var(--coral-b));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35),inset 0 0 12px rgba(255,255,255,.12)}
.btn:hover{transform:translateY(-1px);box-shadow:inset 0 1px 0 rgba(255,255,255,.45),inset 0 0 12px rgba(255,255,255,.18),0 8px 24px rgba(255,138,115,.45)}
.btn.ghost{background:transparent;color:#fff;border:1px solid var(--line-2);box-shadow:none}
.btn.ghost:hover{border-color:rgba(255,255,255,.45);box-shadow:none}
.btn.light{background:#fff;color:#000}

/* menu */
.nav,.nav.scrolled{background:rgba(0,0,0,.72);border-bottom:1px solid var(--line);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.menu a.top,.dd-btn{color:rgba(255,255,255,.86)}
.menu a.top:hover,.dd-btn:hover,.menu a[aria-current="page"],.dd.on>.dd-btn{color:#fff;background:rgba(255,255,255,.08)}
.dd-panel{background:#0c0c0d;border-color:var(--line);box-shadow:0 24px 48px -20px rgba(0,0,0,.9)}
.dd-panel a{color:#fff}
.dd-panel a:hover,.dd-panel a[aria-current="page"]{background:rgba(255,138,115,.1)}
.burger{background:#000;border-color:var(--line-2)}
.burger span{background:#fff}
@media (max-width:1024px){
  .menu{background:#000;border-bottom-color:var(--line)}
  .dd-panel{background:transparent;border-left-color:rgba(255,138,115,.45)}
}

/* thẻ, khối */
.card,details.faq,.badges li,.steps li,.gallery figure,.cta-box,.calc,.swatches li{background:var(--card);border-color:var(--line);color:#fff}
a.card:hover{border-color:rgba(244,118,104,.55);box-shadow:0 18px 40px -24px rgba(240,96,90,.5)}
.card.hot{border:1px solid rgba(244,118,104,.67)}
.badges b,.ticks li::before{color:var(--coral-a)}
.ic{background:rgba(255,138,115,.12);color:var(--coral-a)}
.price,.big-price,.calc-out b{color:var(--coral-a)}
.steps li::before{background:linear-gradient(180deg,var(--coral-a),var(--coral-b))}
.steps span{color:var(--muted)}
.tag,.band .tag{color:var(--coral-a)}
.band{background:linear-gradient(110deg,#140806,#2a0e0b 55%,#3a1210);color:rgba(255,255,255,.82);border-block:1px solid rgba(244,118,104,.35)}
.gallery figcaption{background:rgba(0,0,0,.72)}
.chip{background:#000;color:#fff;border-color:var(--line-2)}
.chip.on{background:#fff;color:#000;border-color:#fff}
.post-body th,.post-body td{border-bottom-color:var(--line)}
.post-body th{background:rgba(255,255,255,.04)}
ul.check li{border-bottom-color:var(--line)}ul.check li::before{border-color:var(--coral-a)}
.calc-form select,form input,form textarea{background:#000;color:#fff;border:1px solid rgba(255,255,255,.15)}
.calc-form select:hover,form input:hover,form textarea:hover{border-color:rgba(255,255,255,.35)}
.calc-out{background:rgba(255,138,115,.08)}
.photo-row figcaption,.wide-photo figcaption,.post-body figcaption,.prod-img small{color:var(--muted)}
.swatches li{border-color:var(--line-2)}

/* form trượt, cookie */
.drawer-bg{background:rgba(0,0,0,.7)}
.drawer-box{background:#0c0c0d;color:#fff;border-left:1px solid var(--line)}
.drawer-x{color:#fff}
form .consent{color:var(--muted)}
.form-msg.err{color:var(--coral-a)}.form-msg.ok{color:#7fd8a0}
.ck-bar{background:#0c0c0d;color:#fff;border-color:var(--line)}

/* nút nổi + khung chat */
.fp{background:linear-gradient(180deg,var(--coral-a),var(--coral-b))}
html:root,#n8n-chat{--chat--color-primary:#F0605A;--chat--color-primary-shade-50:#e0544e;--chat--color-primary-shade-100:#c94843;--chat--color-secondary:#FF8A73;--chat--font-family:"Inter",system-ui,sans-serif;--chat--header--background:#0c0c0d;--chat--toggle--background:#F0605A;--chat--toggle--hover--background:#e0544e;--chat--toggle--active--background:#c94843;--chat--message--user--background:#F0605A;--chat--input--send--button--color:#F0605A}

/* ================= Khung khói ================= */
.khoi-wrap{container-type:inline-size;padding:0 30px}
.khoi-card{
  --u:calc(100cqw / 1380);
  position:relative;isolation:isolate;overflow:hidden;max-width:1380px;margin:0 auto;
  min-height:340px;border-radius:20px;padding:56px 24px;
  background:#000 url("/assets/img/khoi/khoi.webp") right bottom / cover no-repeat;
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
}
.khoi-card video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:right bottom;opacity:0;transition:opacity 1.2s ease;z-index:-1}
.khoi-card video.ready{opacity:.8}
.khoi-card::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(70% 90% at 50% 50%,rgba(0,0,0,.55),rgba(0,0,0,0) 70%)}
.khoi-card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;pointer-events:none;
  background:linear-gradient(120deg,rgba(244,118,104,.67),rgba(244,118,104,.29));
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.kh-brand{margin:0 0 12px;font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--coral-a)}
.khoi-card h1,.khoi-card h2{margin:0;color:#fff;font-weight:600;letter-spacing:-.02em;line-height:1.15;max-width:22ch}
.khoi-card h1{font-size:clamp(30px,3.6vw,52px)}
.khoi-card h2{font-size:clamp(26px,2.4vw,34px)}
.kh-sub{margin:14px 0 0;font-size:clamp(15px,1.2vw,17px);line-height:1.55;color:rgba(255,255,255,.84)}
.kh-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px 22px;margin-top:28px}
.kh-btn{height:46px;padding:0 22px;border:0;border-radius:999px;cursor:pointer;font:600 15px/1 inherit;font-family:inherit;color:#fff;
  background:linear-gradient(180deg,var(--coral-a),var(--coral-b));
  box-shadow:inset 0 1px 0 rgba(255,255,255,.35),inset 0 0 12px rgba(255,255,255,.12),0 4px 14px rgba(240,96,90,.25);
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease}
.kh-btn:hover{transform:translateY(-1px);filter:saturate(1.1) brightness(1.05);box-shadow:inset 0 1px 0 rgba(255,255,255,.45),inset 0 0 12px rgba(255,255,255,.18),0 8px 24px rgba(255,138,115,.45)}
.kh-link{color:#fff;text-decoration:none;font-size:15px;padding:10px 2px;border-bottom:1px solid rgba(255,255,255,.35)}
.kh-link:hover{border-bottom-color:var(--coral-a)}
.kh-form{position:relative;margin:28px 0 0;width:min(100%,480px);display:flex;align-items:center;gap:8px;padding:5px 5px 5px 20px;border-radius:999px;background:#000;border:1px solid rgba(255,255,255,.15);transition:border-color .25s ease}
.kh-form:hover,.kh-form:focus-within{border-color:rgba(255,255,255,.4)}
.kh-form input{flex:1;min-width:0;height:40px;padding:0;margin:0;background:transparent;border:0;outline:0;color:#fff;font:inherit;font-size:14px;width:auto;border-radius:0}
.kh-form input::placeholder{color:var(--place)}
.kh-form .kh-btn{height:40px;flex:none;padding:0 18px;font-size:14px}
.kh-note{min-height:20px;margin:10px 0 0;font-size:13px;color:rgba(255,255,255,.75)}
.kh-note.err{color:var(--coral-a)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* trang chủ: khung khói làm hero */
.khoi-hero{padding:24px 0 0}
.khoi-hero .khoi-card{min-height:min(620px,calc(100dvh - 120px))}
/* cuối mọi trang: khung nhận báo giá */
.khoi-cta{padding:56px 0 0}

/* chuyển động vào (1 lần, ~1,4s) */
.khoi-card.in::after{animation:kh-draw .6s var(--ease) both}
.khoi-card.in .kh-brand,.khoi-card.in h1,.khoi-card.in h2{animation:kh-rise .6s var(--ease) .25s both}
.khoi-card.in .kh-sub{animation:kh-fade .6s ease .45s both}
.khoi-card.in .kh-form,.khoi-card.in .kh-actions{animation:kh-expand .5s var(--ease) .7s both}
.khoi-card.in .kh-btn{animation:kh-pop .35s var(--ease) 1.05s both}
.js .khoi-card:not(.in) :is(.kh-brand,h1,h2,.kh-sub,.kh-form,.kh-actions){opacity:0;animation:kh-reveal .4s ease 2.5s forwards} /* lưới an toàn: script chậm thì 2,5s sau vẫn hiện */
@keyframes kh-reveal{to{opacity:1}}
@keyframes kh-draw{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}
@keyframes kh-rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes kh-fade{from{opacity:0}to{opacity:1}}
@keyframes kh-expand{from{opacity:0;transform:scaleX(.6)}to{opacity:1;transform:none}}
@keyframes kh-pop{0%{opacity:0;transform:scale(.8)}70%{opacity:1;transform:scale(1.04)}100%{transform:scale(1)}}

/* ================= Chân trang ================= */
.foot{margin-top:56px;padding:0 0 90px;background:#000;color:rgba(255,255,255,.72)}
.foot-in{max-width:1380px;padding:0 40px;grid-template-columns:1.5fr 1fr 1fr;gap:40px}
.foot-in>div:nth-child(2),.foot-in>div:nth-child(3){text-align:right}
.foot h3{color:#fff;font-size:15px;font-weight:600;text-transform:none;letter-spacing:0;margin:0 0 10px}
.foot p{font-size:14px;line-height:1.65}
.foot a,.foot .linkbtn{color:#fff;text-decoration:none}
.foot a:hover,.foot .linkbtn:hover{text-decoration:underline;text-underline-offset:3px}
.foot .legal{color:rgba(255,255,255,.6)}
.foot-in>div:first-child img{animation:kh-fade .5s ease 1.25s both}
@media (min-width:1025px){.foot-in,.copy-row{padding-right:170px}.copy-row::before{right:170px}} /* chừa chỗ nút nổi Zalo/Gọi */
.copy-row{max-width:1380px;margin:36px auto 0;padding:18px 40px 0;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,.6);position:relative}
.copy-row::before{content:"";position:absolute;left:40px;right:40px;top:0;height:1px;background:var(--line-2)}
.copy-row a{color:rgba(255,255,255,.85)}

@media (max-width:1024px){
  .khoi-wrap{padding:0 20px}
  .khoi-card{border-radius:16px;padding:52px 22px}
  .foot-in{padding:0 20px;grid-template-columns:1fr 1fr;gap:28px}
  .foot-in>div:first-child{grid-column:1 / -1}
  .foot-in>div:nth-child(2),.foot-in>div:nth-child(3){text-align:left}
  .copy-row{padding:16px 20px 0}.copy-row::before{left:20px;right:20px}
}
@media (max-width:600px){
  .khoi-wrap{padding:0 16px}
  .khoi-card{min-height:0;padding:44px 16px}
  .khoi-hero .khoi-card{min-height:0;padding:52px 16px}
  .kh-sub br{display:none}
  .kh-form{flex-direction:column;align-items:stretch;padding:6px;border-radius:22px}
  .kh-form input{padding:0 14px}
  .foot-in{grid-template-columns:1fr;padding:0 16px}
  .copy-row{flex-direction:column;gap:6px;padding:16px 16px 0}.copy-row::before{left:16px;right:16px}
}
@media (prefers-reduced-motion:reduce){
  .khoi-card video{display:none}
  .khoi-card *{opacity:1!important}
}