/* Hoàng Anh Computer — PWA storefront */
:root{
  --bg:#f5f7fb; --bg2:#ffffff; --card:#ffffff; --card2:#f0f3f9;
  --line:#e2e7f0; --txt:#0f172a; --mut:#526077; --mut2:#8593a8;
  --acc:#0284c7; --acc2:#4f46e5; --hot:#e11d48; --ok:#059669; --warn:#b45309;
  --grad:linear-gradient(135deg,#0ea5e9,#4f46e5);
  --r:16px; --r-sm:11px;
  --hdr-h:56px; --tab-h:60px;
  --sh:0 6px 20px rgba(15,23,42,.10);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
/* hidden phải thắng mọi display trong file này */
[hidden]{display:none!important}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--txt);
  font:15px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  padding-bottom:calc(var(--tab-h) + env(safe-area-inset-bottom));
  overscroll-behavior-y:none;
}
svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input{font:inherit}

/* ---------- Header ---------- */
.hdr{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.9);
  backdrop-filter:saturate(1.6) blur(14px);border-bottom:1px solid var(--line);
  padding-top:env(safe-area-inset-top)}
.hdr-in{height:var(--hdr-h);display:flex;align-items:center;gap:10px;padding:0 12px;max-width:1200px;margin:0 auto}
.icon-btn{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;color:var(--mut)}
.icon-btn:active{background:var(--card2)}
.brand{display:flex;align-items:center;gap:9px;margin-right:auto}
.brand-mark{width:34px;height:34px;border-radius:10px;background:var(--grad);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:14px;letter-spacing:.3px}
.brand-txt{display:flex;flex-direction:column;line-height:1.05}
.brand-txt b{font-size:15px;letter-spacing:.2px}
.brand-txt small{font-size:10.5px;color:var(--mut2);letter-spacing:.14em;text-transform:uppercase}
.searchwrap{display:none;padding:0 12px 10px;max-width:1200px;margin:0 auto}
.searchwrap.on{display:block}
.search{display:flex;align-items:center;gap:9px;background:var(--card);border:1px solid var(--line);
  border-radius:13px;padding:0 12px;height:42px}
.search svg{width:18px;height:18px;color:var(--mut2);flex:none}
.search input{flex:1;background:none;border:0;outline:none;color:var(--txt);min-width:0}
.qclear{color:var(--mut2);font-size:22px;line-height:1;padding:0 2px}

/* ---------- Layout ---------- */
main{max-width:1200px;margin:0 auto;padding:0 12px}
.sec{margin:22px 0}
.sec-h{display:flex;align-items:baseline;gap:10px;margin:0 2px 12px}
.sec-h h2{margin:0;font-size:17px;letter-spacing:-.2px}
.sec-h .more{margin-left:auto;font-size:13px;color:var(--acc)}
.muted{color:var(--mut)}
.center{text-align:center}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;border-radius:var(--r);margin-top:14px;
  background:radial-gradient(120% 140% at 12% 0%,#e8f1fe 0%,#f3f6fc 48%,#ffffff 100%);
  border:1px solid var(--line);padding:22px 18px}
.hero:before{content:"";position:absolute;inset:-40% -20% auto auto;width:280px;height:280px;
  background:var(--grad);filter:blur(80px);opacity:.20;border-radius:50%}
.hero h1{position:relative;margin:0 0 6px;font-size:23px;line-height:1.25;letter-spacing:-.4px}
.hero h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{position:relative;margin:0 0 14px;color:var(--mut);font-size:13.5px}
.hero-cta{position:relative;display:flex;gap:9px;flex-wrap:wrap}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:7px;height:42px;padding:0 16px;
  border-radius:12px;font-weight:650;font-size:14px;transition:transform .12s}
.btn:active{transform:scale(.97)}
.btn svg{width:18px;height:18px}
.btn-p{background:var(--grad);color:#fff}
.btn-g{background:var(--card2);border:1px solid var(--line);color:var(--txt)}
.btn-ghost{background:var(--card);border:1px solid var(--line)}
.w100{width:100%}

/* ---------- Trust ---------- */
.trust{display:grid;grid-template-columns:repeat(2,1fr);gap:9px;margin-top:14px}
@media(min-width:620px){.trust{grid-template-columns:repeat(4,1fr)}}
.trust>div{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:11px 12px;display:flex;gap:9px;align-items:center}
.trust>div>div{min-width:0}
.trust svg{width:19px;height:19px;color:var(--acc);flex:none}
.trust b{display:block;font-size:12.5px;line-height:1.3}
.trust span{display:block;font-size:11px;color:var(--mut2);line-height:1.35;margin-top:2px}

/* ---------- Category grid ---------- */
.cats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media(min-width:560px){.cats{grid-template-columns:repeat(3,1fr)}}
@media(min-width:900px){.cats{grid-template-columns:repeat(4,1fr)}}
.cat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px;
  display:flex;flex-direction:column;gap:9px;position:relative;overflow:hidden;transition:border-color .15s}
.cat:active{border-color:var(--acc);box-shadow:var(--sh)}
.cat .ci{width:40px;height:40px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(135deg,#e0f2fe,#e8e7fd);color:var(--acc)}
.cat b{font-size:14px}
.cat span{font-size:11.5px;color:var(--mut2)}

/* ---------- Product cards ---------- */
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media(min-width:620px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(min-width:900px){.grid{grid-template-columns:repeat(4,1fr)}}
@media(min-width:1100px){.grid{grid-template-columns:repeat(5,1fr)}}
.rail{display:grid;grid-auto-flow:column;grid-auto-columns:46%;gap:10px;overflow-x:auto;
  scroll-snap-type:x mandatory;padding-bottom:4px;margin:0 -12px;padding-left:12px;padding-right:12px}
.rail>*{scroll-snap-align:start}
@media(min-width:620px){.rail{grid-auto-columns:30%}}
@media(min-width:900px){.rail{grid-auto-columns:22%}}
.rail::-webkit-scrollbar{height:0}

.p{background:var(--card);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .12s,border-color .15s}
.p:active{transform:scale(.985);border-color:#c3ccdb;box-shadow:var(--sh)}
.p-img{aspect-ratio:1/1;position:relative;display:grid;place-items:center;
  background:linear-gradient(160deg,#f7f9fd,#eef2f9)}
.p-img svg{width:40%;height:40%;color:#b3c0d4;stroke-width:1.3}
.p-img{flex-direction:column;gap:6px}
.p-brand{font-size:11px;font-weight:750;letter-spacing:.1em;text-transform:uppercase;color:#93a3ba}
.dt-img{flex-direction:column;gap:10px}
.dt-brand{font-size:14px;font-weight:750;letter-spacing:.12em;text-transform:uppercase;color:#93a3ba}
.p-tag{position:absolute;top:8px;left:8px;font-size:10px;font-weight:700;letter-spacing:.04em;
  padding:3px 7px;border-radius:999px;background:#e7f7f0;color:var(--ok);border:1px solid #bfe9d8}
.p-tag.used{background:#fdf3e3;color:var(--warn);border-color:#f2ddb8}
.p-save{position:absolute;top:6px;right:6px;width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.82);color:var(--mut2);backdrop-filter:blur(6px);border:1px solid var(--line)}
.p-save.on{color:var(--hot)}
.p-save.on svg{fill:currentColor}
.p-save svg{width:17px;height:17px}
.p-b{padding:10px 11px 12px;display:flex;flex-direction:column;gap:6px;flex:1}
.p-cat{font-size:10.5px;color:var(--mut2);letter-spacing:.05em;text-transform:uppercase}
.p-n{font-size:12.8px;line-height:1.38;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:2.76em}
.p-f{margin-top:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:6px}
.p-g{font-weight:800;font-size:14.5px;color:var(--acc)}
.p-bh{font-size:10.5px;color:var(--mut2);white-space:nowrap}

/* ---------- Chips / filters ---------- */
.chips{display:flex;gap:8px;overflow-x:auto;margin:0 -12px 12px;padding:0 12px 2px}
.chips::-webkit-scrollbar{height:0}
.chip{flex:none;height:34px;padding:0 13px;border-radius:999px;background:var(--card);
  border:1px solid var(--line);font-size:13px;color:var(--mut);display:inline-flex;align-items:center}
.chip.on{background:var(--grad);color:#fff;border-color:transparent;font-weight:650}

/* ---------- Drawer ---------- */
.sheet-bg{position:fixed;inset:0;background:rgba(15,23,42,.38);z-index:50;backdrop-filter:blur(2px)}
.drawer{position:fixed;left:0;top:0;bottom:0;width:min(84vw,340px);z-index:51;background:var(--bg2);
  border-right:1px solid var(--line);overflow-y:auto;padding:calc(env(safe-area-inset-top) + 16px) 14px 24px;
  animation:slidein .22s ease}
@keyframes slidein{from{transform:translateX(-100%)}}
.dr-h{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--mut2);margin:16px 6px 8px}
.dr-a{display:flex;align-items:center;gap:11px;padding:11px 10px;border-radius:12px;font-size:14px}
.dr-a:active{background:var(--card2)}
.dr-a svg{width:19px;height:19px;color:var(--acc)}
.dr-a i{margin-left:auto;font-style:normal;font-size:11.5px;color:var(--mut2)}

/* ---------- Tabbar ---------- */
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:45;height:calc(var(--tab-h) + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-top:1px solid var(--line)}
.tab{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  color:var(--mut2);font-size:10.5px;position:relative}
.tab svg{width:21px;height:21px}
.tab.on{color:var(--acc)}
.tab .dot{position:absolute;top:8px;right:calc(50% - 16px);width:7px;height:7px;border-radius:50%;background:var(--hot)}

/* ---------- Detail ---------- */
.dt-img{aspect-ratio:4/3;border-radius:var(--r);display:grid;place-items:center;margin-top:14px;
  background:linear-gradient(160deg,#f7f9fd,#eef2f9);border:1px solid var(--line)}
.dt-img svg{width:30%;height:30%;color:#b3c0d4;stroke-width:1.2}
.dt-n{font-size:18px;line-height:1.35;margin:14px 0 8px;letter-spacing:-.2px}
.dt-g{font-size:26px;font-weight:800;color:var(--acc);margin:0 0 4px}
.spec{width:100%;border-collapse:collapse;margin:14px 0;font-size:13.5px}
.spec td{padding:10px 0;border-bottom:1px solid var(--line)}
.spec td:first-child{color:var(--mut);width:42%}
.cta-bar{display:flex;gap:9px;margin:16px 0}
.cta-bar .btn{flex:1}

.empty{text-align:center;padding:52px 20px;color:var(--mut2)}
.empty svg{width:52px;height:52px;margin-bottom:12px;color:#c6cfdd}

/* ---------- Toast & install sheet ---------- */
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(var(--tab-h) + 18px + env(safe-area-inset-bottom));
  background:#0f172a;border:1px solid #0f172a;color:#fff;padding:10px 16px;border-radius:999px;
  font-size:13px;z-index:60;box-shadow:var(--sh)}
.install-sheet{position:fixed;inset:0;z-index:70;background:rgba(15,23,42,.45);display:grid;place-items:end center;
  backdrop-filter:blur(3px)}
.ish-card{background:var(--bg2);border:1px solid var(--line);border-radius:22px 22px 0 0;width:100%;
  max-width:520px;padding:22px 20px calc(26px + env(safe-area-inset-bottom));animation:up .24s ease}
@keyframes up{from{transform:translateY(100%)}}
.ish-card h3{margin:0 0 8px;font-size:17px}
.ish-card p{margin:0 0 14px;color:var(--mut);font-size:13.5px}
.ish-card ol{list-style:none;padding:0;margin:0 0 18px;display:flex;flex-direction:column;gap:12px}
.ish-card li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--txt)}
.stepn{width:24px;height:24px;border-radius:50%;background:var(--grad);color:#fff;font-size:12px;
  font-weight:800;display:grid;place-items:center;flex:none}
.ios-share{width:19px;height:19px;color:var(--acc);vertical-align:-4px}
.skel{background:linear-gradient(90deg,#eef1f7,#f7f9fc,#eef1f7);background-size:200% 100%;
  animation:sk 1.1s infinite;border-radius:var(--r);height:210px}
@keyframes sk{to{background-position:-200% 0}}