/* Kaitori Price — design tokens kiểu shadcn/ui (zinc + rose), viền mảnh, bóng nhẹ, mật độ gọn */
:root{
  --bg:#fafafa;--card:#fff;--fg:#18181b;--muted:#71717a;--line:#e4e4e7;--line2:#f4f4f5;
  --brand:#0f172a;--a:#e11d48;--a-soft:#fff1f2;--g:#16a34a;--r:#dc2626;--warn-bg:#fffbeb;--warn:#92400e;
  --radius:12px;--sh:0 1px 2px rgba(24,24,27,.05);--sh-h:0 8px 24px rgba(24,24,27,.10);
  --n:var(--brand);--t:var(--fg);--m:var(--muted)
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:"Inter","Hiragino Sans","Noto Sans JP","Yu Gothic UI",system-ui,sans-serif;font-size:14.5px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,select,input{font:inherit}
.wrap{max-width:1240px;margin:0 auto;padding:0 16px}

/* ---------- header ---------- */
.hd{background:var(--brand);color:#fff;position:sticky;top:0;z-index:40;border-bottom:1px solid #1e293b}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:52px}
.logo{display:flex;align-items:center;gap:.55rem;font-weight:800;font-size:1.08rem;letter-spacing:-.01em}
.logo img{display:block;border-radius:7px}
.hd-r{display:flex;align-items:center;gap:.6rem}
.upd{font-size:.74rem;color:#94a3b8}
.lang{border:1px solid #334155;background:transparent;color:#e2e8f0;border-radius:8px;padding:.22rem .65rem;font-size:.76rem;cursor:pointer}
.lang:hover{background:#1e293b}

/* ---------- hero (gọn) ---------- */
.hero{background:var(--card);border-bottom:1px solid var(--line)}
.hero-in{display:flex;align-items:center;gap:20px;padding-top:16px;padding-bottom:16px}
.hero-t{flex:1;min-width:0}
.hero h1{margin:0;font-size:1.22rem;line-height:1.35;letter-spacing:-.015em;font-weight:800}
.hero .hl{color:var(--a)}
.hero p{margin:.2rem 0 0;color:var(--muted);font-size:.84rem}
.hero-q{flex:0 0 420px;border:1px solid var(--line);background:var(--bg);border-radius:10px;padding:.65rem .9rem;font-size:.92rem;outline:none;transition:border .15s,box-shadow .15s}
.hero-q:focus{border-color:#a1a1aa;box-shadow:0 0 0 3px rgba(225,29,72,.12);background:#fff}

/* ---------- category chips ---------- */
.chips{display:flex;flex-wrap:wrap;gap:.4rem;padding:14px 0 10px}
.chips button{border:1px solid var(--line);background:var(--card);color:var(--fg);font-weight:600;font-size:.84rem;padding:.42rem .8rem;border-radius:999px;cursor:pointer;white-space:nowrap;transition:background .12s,border-color .12s}
.chips button:hover{border-color:#a1a1aa}
.chips button small{margin-left:.35rem;font-weight:500;color:var(--muted);font-size:.72rem}
.chips button.on{background:var(--fg);border-color:var(--fg);color:#fff}.chips button.on small{color:#d4d4d8}
.chips button.deal{background:var(--warn-bg);border-color:#fde68a;color:var(--warn)}.chips button.deal.on{background:#f59e0b;border-color:#f59e0b;color:#fff}

.sec{font-size:1.02rem;margin:.4rem 0 .8rem;font-weight:800;letter-spacing:-.01em}.sec small{font-size:.78rem;color:var(--muted);font-weight:500;margin-left:.4rem}

/* ---------- layout + facets ---------- */
.layout{display:grid;grid-template-columns:248px minmax(0,1fr);gap:18px;align-items:start}
.side{position:sticky;top:64px;max-height:calc(100vh - 76px);overflow:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:10px 14px;scrollbar-width:thin}
.side-hd{display:flex;justify-content:space-between;align-items:center;padding:2px 0 8px;border-bottom:1px solid var(--line);font-size:.9rem}
.side-x,.side-ft,.fbtn{display:none}
.fg{padding:10px 0;border-bottom:1px solid var(--line2)}
.fg:last-child{border-bottom:0}
.fg-t{font-size:.72rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px}
.fo{display:flex;align-items:center;gap:.5rem;font-size:.86rem;padding:3px 4px;cursor:pointer;border-radius:6px}
.fo:hover{background:var(--line2)}
.fo input{accent-color:var(--fg);width:15px;height:15px;flex:0 0 auto;margin:0}
.fo span{flex:1;line-height:1.3}
.fo em{font-style:normal;font-size:.72rem;color:var(--muted);font-variant-numeric:tabular-nums}
.fo.hid{display:none}
.fmore{border:0;background:none;color:var(--fg);text-decoration:underline;text-underline-offset:2px;font-size:.78rem;cursor:pointer;padding:4px}
.reset{border:1px solid var(--line);background:var(--card);color:var(--fg);font-weight:600;border-radius:8px;padding:.4rem .8rem;font-size:.8rem;cursor:pointer}

/* ---------- results bar ---------- */
.rbar{display:flex;align-items:center;gap:.5rem;flex-wrap:wrap;margin-bottom:8px}
.hint{font-size:.8rem;color:var(--muted);margin:0}
.rbar .hint{flex:1}
.rbar select{border:1px solid var(--line);border-radius:8px;padding:.4rem .55rem;font-size:.82rem;background:var(--card);color:var(--fg)}
.vtog{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--card)}
.vtog button{border:0;background:none;padding:.32rem .65rem;font-size:.95rem;cursor:pointer;color:var(--muted)}
.vtog button.on{background:var(--fg);color:#fff}
.active{display:flex;flex-wrap:wrap;gap:.35rem;margin-bottom:10px}
.ac{border:1px solid var(--line);background:var(--card);color:var(--fg);border-radius:999px;padding:.22rem .65rem;font-size:.78rem;cursor:pointer;font-weight:600}
.ac:hover{border-color:#a1a1aa}
.ac.clr{color:var(--r);border-color:#fecaca}

/* ---------- cards ---------- */
.list{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--sh);padding:14px;display:flex;flex-direction:column;gap:8px;transition:box-shadow .15s,border-color .15s}
.card:hover{box-shadow:var(--sh-h);border-color:#d4d4d8}
.c-top{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.c-name{font-weight:700;font-size:.95rem;line-height:1.4;letter-spacing:-.005em}
.c-sub{font-size:.74rem;color:var(--muted);margin-top:2px}
.spark{flex:0 0 84px}
.best{display:flex;align-items:baseline;gap:.5rem;flex-wrap:wrap}
.best-p{font-size:1.42rem;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.best-s{font-size:.74rem;background:var(--a-soft);color:var(--a);font-weight:700;padding:.12rem .5rem;border-radius:999px}
.best-s.one{background:var(--line2);color:var(--muted)}
.chg{font-size:.78rem;font-weight:700}
.up{color:var(--g)}.dn{color:var(--r)}
.diff{font-size:.76rem;color:var(--warn);background:var(--warn-bg);border-radius:8px;padding:.25rem .55rem;align-self:flex-start}
.shops{border-top:1px solid var(--line2);padding-top:6px;display:flex;flex-direction:column}
.sh{display:flex;justify-content:space-between;align-items:center;font-size:.86rem;padding:3px 0;gap:8px}
.sh a{color:#2563eb}.sh a:hover{text-decoration:underline}
.sh a.lst{color:#7c3aed}
.sh .p{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap}
.sh.top .p{color:var(--a)}
.sh .nt{font-size:.7rem;color:var(--muted);margin-left:.3rem}
.calc{display:flex;align-items:center;gap:.4rem;font-size:.78rem;color:var(--muted)}
.calc input{width:92px;border:1px solid var(--line);border-radius:7px;padding:.25rem .45rem;font-size:.82rem;background:var(--bg)}
.calc b{font-size:.86rem}
.aff{display:flex;align-items:center;gap:.45rem;font-size:.78rem;background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;border-radius:8px;padding:.35rem .55rem}
.aff a{font-weight:700;color:#15803d;text-decoration:underline;text-underline-offset:2px}
.aff .pr{font-size:.6rem;font-weight:800;background:#dcfce7;color:#166534;border-radius:4px;padding:0 .3rem}
.more{display:block;margin:16px auto 0;border:1px solid var(--line);background:var(--card);color:var(--fg);font-weight:700;padding:.6rem 1.8rem;border-radius:10px;cursor:pointer}
.more:hover{border-color:#a1a1aa}
.empty{text-align:center;color:var(--muted);padding:2rem}

/* ---------- table ---------- */
.tbl{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.tr{display:grid;grid-template-columns:minmax(0,2.6fr) 1fr 1.2fr 1fr .8fr;gap:10px;align-items:center;padding:9px 14px;border-top:1px solid var(--line2);font-size:.86rem}
.tr.th{border-top:0;background:var(--line2);font-size:.72rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.tr:not(.th):hover{background:#fcfcfc}
.tn{font-weight:600;line-height:1.35}.tn small,.t2 small{display:block;font-weight:400;color:var(--muted);font-size:.72rem}
.tb{font-weight:800;font-variant-numeric:tabular-nums}.tb i{font-style:normal;font-size:.72rem}.tb i.up{color:var(--g)}.tb i.dn{color:var(--r)}
.tg{font-weight:700;color:var(--warn)}
.tr a{color:#2563eb}.tr a.lst{color:#7c3aed}
.tmore{grid-column:1/-1;justify-self:start;border:0;background:none;color:#2563eb;font-size:.78rem;font-weight:600;padding:0;cursor:pointer}
.tr .tx{display:none;grid-column:1/-1;margin-top:-2px;background:var(--line2);border-radius:8px;padding:4px 10px;border-top:0}
.tr.open .tx{display:flex}.tr.open .tmore{color:var(--muted)}

/* ---------- deals ---------- */
.pr-note{background:var(--warn-bg);border:1px solid #fde68a;color:var(--warn);border-radius:10px;padding:.65rem .85rem;font-size:.8rem;margin:4px 0 12px}
.dg{font-size:.98rem;margin:18px 0 10px}
.dlist{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px}
.deal-card{position:relative;display:flex;flex-direction:column;gap:.3rem;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:box-shadow .15s}
.deal-card:hover{box-shadow:var(--sh-h)}
.deal-card b{font-size:.95rem}.deal-card span{font-size:.82rem;color:#52525b}
.deal-card .pr{position:absolute;top:10px;right:10px;font-size:.6rem;font-weight:800;background:var(--line2);color:var(--muted);padding:.1rem .4rem;border-radius:5px}
.deal-card .badge{align-self:flex-start;background:var(--a-soft);color:var(--a);font-weight:700;font-size:.7rem;padding:.1rem .5rem;border-radius:999px}
.deal-card .go{color:var(--a);font-weight:700;margin-top:.2rem}

/* ---------- footer, toast ---------- */
.ft{margin-top:40px;background:var(--card);border-top:1px solid var(--line);color:var(--muted);font-size:.8rem;padding:22px 0}
.ft a{color:var(--fg);text-decoration:underline}
.ft-cats{display:flex;flex-wrap:wrap;gap:.35rem .9rem;margin:.6rem 0}.ft-cats a{color:var(--muted);text-decoration:none}.ft-cats a:hover{text-decoration:underline}
.small{color:#a1a1aa}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(140%);background:var(--fg);color:#fff;padding:.65rem .95rem;border-radius:10px;font-size:.82rem;max-width:92vw;box-shadow:var(--sh-h);transition:transform .25s;z-index:99}
#toast.show{transform:translateX(-50%) translateY(0)}
.scrim{display:none}

/* ---------- responsive ---------- */
@media(max-width:900px){
 .hero-in{flex-direction:column;align-items:stretch;gap:10px;padding-top:12px;padding-bottom:12px}
 .hero-q{flex:auto}
 .hero h1{font-size:1.05rem}
 .hero p{display:none}
 .upd{display:none}
 .layout{grid-template-columns:1fr}
 .fbtn{display:inline-flex;align-items:center;gap:.3rem;border:1px solid var(--fg);background:var(--fg);color:#fff;border-radius:8px;padding:.42rem .75rem;font-weight:700;font-size:.82rem;cursor:pointer}
 .side{position:fixed;left:0;right:0;bottom:0;top:auto;max-height:84vh;border-radius:16px 16px 0 0;z-index:60;transform:translateY(105%);transition:transform .25s;padding-bottom:0}
 body.side-open .side{transform:translateY(0)}
 .side-x{display:block;border:0;background:none;font-size:1.1rem;cursor:pointer}
 .side-ft{display:flex;gap:.5rem;position:sticky;bottom:0;margin:6px -14px 0;padding:10px 14px calc(10px + env(safe-area-inset-bottom));background:var(--card);border-top:1px solid var(--line);z-index:2}
 .apply{flex:1;border:0;background:var(--fg);color:#fff;font-weight:800;border-radius:10px;padding:.65rem;cursor:pointer}
 .scrim{display:block;position:fixed;inset:0;background:rgba(9,9,11,.45);opacity:0;pointer-events:none;transition:opacity .2s;z-index:55}
 body.side-open .scrim{opacity:1;pointer-events:auto}
 .chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;padding:10px 0 8px}
 .chips::-webkit-scrollbar{display:none}
 .tr{grid-template-columns:minmax(0,1.8fr) 1fr .9fr}
 .tr > :nth-child(4),.tr > :nth-child(5){display:none}
 .rbar .hint{flex-basis:100%;order:3}
}
@media(max-width:560px){.list{grid-template-columns:1fr}.best-p{font-size:1.3rem}}
/* v6: back-to-top, khoá cuộn nền khi mở bộ lọc */
#toTop{position:fixed;right:16px;bottom:20px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--card);color:var(--fg);font-size:1.25rem;font-weight:800;box-shadow:var(--sh-h);cursor:pointer;z-index:50;opacity:0;pointer-events:none;transform:translateY(10px);transition:opacity .2s,transform .2s}
#toTop.show{opacity:1;pointer-events:auto;transform:none}
#toTop:hover{border-color:#a1a1aa}
@media(max-width:900px){body.side-open{overflow:hidden}body.side-open #toTop{display:none}#toTop{bottom:16px;right:12px;width:40px;height:40px;opacity:0;font-size:1.1rem}#toTop.show{opacity:.85}body.cg-open #toTop{display:none}main{padding-bottom:64px}}
/* v7: chip mobile — tên ngắn, ẩn số, ghim dưới header, mờ mép phải */
.chips .ls{display:none}
@media(max-width:900px){
 .chips{position:sticky;top:52px;z-index:30;background:var(--bg);margin:0 -16px;padding:8px 16px;gap:.35rem;
   -webkit-mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 36px),transparent);mask-image:linear-gradient(to right,#000 0,#000 calc(100% - 36px),transparent);
   border-bottom:1px solid transparent;transition:border-color .2s}
 .chips.stuck{border-bottom-color:var(--line);box-shadow:0 4px 10px -8px rgba(0,0,0,.25)}
 .chips .lf,.chips small{display:none}
 .chips .ls{display:inline}
 .chips button{padding:.45rem .75rem;font-size:.86rem;min-height:36px}
 .chips button:last-child{margin-right:28px}
}
/* v8: mobile category picker thay cho chip kéo ngang */
.mcat,.cgrid-wrap{display:none}
@media(max-width:900px){
 .chips{display:none}
 .mcat{display:flex;gap:.4rem;position:sticky;top:52px;z-index:30;background:var(--bg);margin:0 -16px;padding:8px 16px}
 .mcat button{-webkit-appearance:none;appearance:none;font-family:inherit;color:var(--fg);border:1px solid var(--line);background:var(--card);border-radius:12px;padding:0 .8rem;font-weight:700;font-size:.9rem;line-height:1;cursor:pointer;height:44px;white-space:nowrap;flex:none;display:inline-flex;align-items:center;justify-content:center;gap:.3rem;-webkit-tap-highlight-color:transparent}
 .mcat .mc-home{width:44px;padding:0;font-size:1.15rem}
 .mcat .mc-pick{flex:1 1 auto;min-width:0;justify-content:space-between;text-align:left}
 .mcat .mc-pick #mcLabel{overflow:hidden;text-overflow:ellipsis;min-width:0}
 .mcat .mc-pick b{font-size:.7rem;color:var(--muted);flex:none}.mcat .mc-pick.on b{color:#fff}
 @media(max-width:359px){.mcat .mc-deal .dl{display:none}.mcat button{padding:0 .65rem}}
 .mcat .prb{font-size:.62rem;font-weight:800;border:1px solid currentColor;border-radius:4px;padding:1px 3px;opacity:.75}
 .mcat .on{background:var(--fg);color:#fff;border-color:var(--fg)}
 .mcat .mc-deal{background:var(--warn-bg);border-color:#fde68a;color:var(--warn)}.mcat .mc-deal.on{background:#f59e0b;color:#fff}
 .cgrid-wrap{display:block;position:fixed;left:0;right:0;bottom:0;z-index:70;background:var(--card);border-radius:16px 16px 0 0;padding:12px 14px calc(16px + env(safe-area-inset-bottom));transform:translateY(105%);transition:transform .25s;box-shadow:0 -10px 30px rgba(0,0,0,.2)}
 body.cg-open .cgrid-wrap{transform:none}
 body.cg-open .scrim{opacity:1;pointer-events:auto}
 body.cg-open{overflow:hidden}
 .cgrid-hd{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
 .cgrid-hd button{border:0;background:none;font-size:1.1rem;cursor:pointer}
 .cgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
 .cgrid button{display:flex;flex-direction:column;align-items:center;gap:2px;border:1px solid var(--line);background:var(--bg);border-radius:12px;padding:10px 4px;cursor:pointer}
 .cgrid button.on{border-color:var(--fg);background:#f4f4f5}
 .cgrid .ci{font-size:1.4rem}.cgrid .cn{font-weight:700;font-size:.82rem}.cgrid .cc{font-size:.7rem;color:var(--muted)}
}