/* =========================================================
   Tiệm sách Gác Xép — style.css
   Tiệm sách độc lập ở Hà Nội: văn học, thiếu nhi, sách cũ, cà phê đọc sách,
   sự kiện ra mắt sách. HTML/CSS thuần, JS vanilla nhỏ cuối trang.
   Màu: gỗ #6B4A2B · kem #F6EFE3 · xanh rêu #4E6B4A · mực #25201A
   Font: "Crimson Pro" (tiêu đề, serif) + "Inter" (thân trang)
         + "Caveat" CHỈ dùng cho ghi chú viết tay "Nhân viên gợi ý".
   Bố cục khác các mẫu trước:
     - Header thanh KEM: wordmark serif + nav + Ô TÌM SÁCH + nút "Giỏ"
     - Hero = KỆ SÁCH 3D BẰNG CSS (perspective): 8 cuốn đứng trên ván gỗ,
       mỗi .book có gáy (spine) + bìa (cover ảnh) + mép giấy, xoay rotateY;
       rê chuột kéo cuốn sách ra phía trước và nghiêng. Chữ bên trái
       "Sách hay, ghế êm, cà phê nóng" + giờ mở cửa. Dưới 640px kệ đổ thành
       dải cuộn ngang, bỏ xoay 3D (degrade gracefully).
     - "Kệ theo thể loại": MỖI THỂ LOẠI MỘT KỆ NGANG cuộn được (scroll-snap),
       bìa sách + THẺ GIÁ treo; ván gỗ dưới mỗi kệ
     - "Nhân viên gợi ý": 3 tờ giấy note viết tay (Caveat) dán băng dính,
       xoay lệch, có chữ cái viết tắt nhân viên
     - "Đọc thử": CUỐN SÁCH LẬT TRANG 3D (leaf xoay quanh gáy, 2 mặt),
       nút Trang trước / Trang sau + bộ đếm trang; mobile chuyển thành
       ẩn/hiện không xoay
     - Góc đọc & cà phê: 3 ảnh góc đọc + menu nhỏ có đường chấm dẫn giá
     - Sự kiện: hàng có KHỐI NGÀY (số lớn + tháng) bên trái
     - Sách cũ trao đổi: thông tin + form định giá; newsletter; footer giờ mở cửa
     - Trang sách: bộ lọc thể loại / giá / tình trạng + sắp xếp (JS)
     - Chi tiết sách: bìa lớn NGHIÊNG 3D, bảng thông tin, đọc thử, đánh giá
     - Góc đọc: đặt chỗ ghế theo KHUNG GIỜ dạng chip + sơ đồ ghế nhỏ
   Ảnh: dùng biến --img (link trực tiếp, xem CREDITS.md) trên phần tử .ph
   ========================================================= */

:root{
  --wood:#6B4A2B; --wood-d:#4E3419; --wood-l:#8C6842; --wood-x:#B08A60;
  --cream:#F6EFE3; --cream-d:#EDE2CF; --paper:#FFFBF3;
  --moss:#4E6B4A; --moss-d:#3B5338; --moss-l:#DCE5D6;
  --ink:#25201A; --muted:#6E655A; --line:#E3D7C2; --ph:#e7dcc8;
  --red:#A8402F; --gold:#C89B3C;
  --serif:"Crimson Pro",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --hand:"Caveat","Segoe Script",cursive;
  --r:10px; --sh:0 8px 24px rgba(60,40,20,.12); --sh-s:0 2px 8px rgba(60,40,20,.10);
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.6;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--wood);text-decoration:none}
a:hover{color:var(--wood-d)}
button{font:inherit;cursor:pointer}
input,select,textarea{font:inherit}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;line-height:1.15;margin:0 0 .5rem;color:var(--ink)}
h1{font-size:clamp(2.3rem,5vw,3.9rem)} h2{font-size:clamp(1.75rem,3.2vw,2.5rem)} h3{font-size:1.35rem} h4{font-size:1.1rem}
p{margin:0 0 1rem}
.container{width:min(1160px,92%);margin:0 auto}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.ph{background:var(--img,var(--ph)) center/cover no-repeat;background-color:#e7dcc8}
.eyebrow{display:inline-block;font-family:var(--serif);font-style:italic;color:var(--moss);font-size:1.15rem;margin-bottom:.3rem}
.eyebrow::before{content:"— ";color:var(--gold)}
.lead{font-size:1.1rem;color:var(--muted);max-width:60ch}
.sec{padding:4.5rem 0}
.sec--paper{background:var(--paper)}
.sec--wood{background:var(--wood-d);color:var(--cream)}
.sec--wood h2,.sec--wood h3{color:#fff}
.sec__head{display:flex;justify-content:space-between;align-items:end;gap:1rem;margin-bottom:2rem;flex-wrap:wrap}
.sec__head p{margin:0;color:var(--muted);max-width:56ch}
.sec--wood .sec__head p{color:#D9CBB5}
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.7rem 1.35rem;border-radius:6px;font-weight:600;border:1.5px solid transparent;transition:.2s;line-height:1.2;font-size:.95rem}
.btn--wood{background:var(--wood);color:#fff;border-color:var(--wood)}
.btn--wood:hover{background:var(--wood-d);border-color:var(--wood-d);color:#fff}
.btn--moss{background:var(--moss);color:#fff;border-color:var(--moss)}
.btn--moss:hover{background:var(--moss-d);border-color:var(--moss-d);color:#fff}
.btn--ghost{background:transparent;color:var(--wood);border-color:var(--wood)}
.btn--ghost:hover{background:var(--wood);color:#fff}
.btn--light{background:var(--cream);color:var(--wood-d);border-color:var(--cream)}
.btn--light:hover{background:#fff;color:var(--wood-d)}
.btn--sm{padding:.45rem .9rem;font-size:.85rem}
.price{font-family:var(--serif);font-weight:700;color:var(--wood-d);font-size:1.1rem}
.price s{color:var(--muted);font-weight:400;font-size:.85em;margin-left:.3rem}
.chip{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.75rem;font-weight:600;background:var(--moss-l);color:var(--moss-d)}
.chip--old{background:#F3E3C4;color:#7A5A1F}
.chip--new{background:var(--moss-l);color:var(--moss-d)}
.chip--red{background:#F5DBD5;color:var(--red)}

/* ---------- Header ---------- */
.header{background:var(--cream);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header__in{display:flex;align-items:center;gap:1.4rem;min-height:74px}
.logo{display:flex;align-items:center;gap:.6rem;font-family:var(--serif);font-weight:700;font-size:1.55rem;color:var(--wood-d);line-height:1}
.logo__mark{width:40px;height:40px;border-radius:4px 10px 10px 4px;background:var(--wood);color:var(--cream);display:grid;place-items:center;font-size:1.4rem;box-shadow:inset 4px 0 0 var(--wood-d)}
.logo__text small{display:block;font-family:var(--sans);font-size:.65rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--moss);margin-top:.25rem}
.nav{display:flex;gap:1.4rem;margin-left:.6rem}
.nav a{font-weight:500;color:var(--ink);padding:.3rem 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a.is-active{border-color:var(--moss);color:var(--moss-d)}
.search{margin-left:auto;display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:999px;padding:.15rem .25rem .15rem .9rem;min-width:250px}
.search input{border:0;background:transparent;outline:0;flex:1;font-size:.92rem;min-width:0}
.search button{border:0;background:var(--moss);color:#fff;width:32px;height:32px;border-radius:50%;font-size:1.05rem;line-height:1}
.cart{display:inline-flex;align-items:center;gap:.4rem;font-weight:600;color:var(--wood-d);border:1.5px solid var(--wood);border-radius:6px;padding:.45rem .85rem}
.cart__n{background:var(--red);color:#fff;font-size:.72rem;border-radius:999px;padding:.05rem .45rem}
.burger{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:6px;flex-direction:column;justify-content:center;align-items:center;gap:5px}
.burger span{display:block;width:20px;height:2px;background:var(--wood-d)}

/* ---------- Hero: kệ sách 3D ---------- */
.hero{padding:3.5rem 0 4rem;background:
  radial-gradient(60% 80% at 100% 0,rgba(78,107,74,.10),transparent 60%),
  var(--cream)}
.hero__in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:3rem;align-items:center}
.hero h1{margin-bottom:1rem}
.hero h1 em{font-style:italic;color:var(--moss)}
.hero__hours{display:flex;gap:.8rem;align-items:center;margin:1.4rem 0 1.6rem;background:var(--paper);border:1px dashed var(--wood-x);border-radius:var(--r);padding:.8rem 1rem;font-size:.92rem}
.hero__hours b{font-family:var(--serif);font-size:1.15rem;color:var(--wood-d)}
.hero__hours .dot{width:10px;height:10px;border-radius:50%;background:var(--moss);box-shadow:0 0 0 4px var(--moss-l)}
.hero__cta{display:flex;gap:.8rem;flex-wrap:wrap}
.hero__hint{font-size:.85rem;color:var(--muted);margin-top:1rem}

.shelf3d{perspective:1400px;perspective-origin:50% 30%}
.shelf{position:relative;transform-style:preserve-3d;padding:1.6rem 1.4rem 0}
.shelf::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,#E2D3B8,#D6C3A3);border-radius:8px 8px 0 0;
  box-shadow:inset 0 0 0 10px var(--wood),inset 0 0 0 11px var(--wood-d),0 30px 50px -20px rgba(60,40,20,.45);transform:translateZ(-80px)}
.shelf__row{display:flex;justify-content:center;align-items:flex-end;gap:10px;position:relative;transform-style:preserve-3d;padding:1.2rem 0 0;min-height:230px}
.book{position:relative;width:90px;height:150px;transform-style:preserve-3d;transform:rotateY(28deg);transition:transform .55s cubic-bezier(.2,.8,.2,1);cursor:pointer;flex:0 0 auto}
.book:nth-child(2n){height:160px;width:94px}
.book:nth-child(3n){height:144px}
.book:nth-child(5){height:166px;width:96px}
.book:nth-child(n+7){display:none}
.book__cover{position:absolute;inset:0;z-index:1;border-radius:2px 5px 5px 2px;overflow:hidden;box-shadow:6px 8px 18px rgba(40,25,10,.35);background:#c9b89a}
.book__cover::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.28),transparent 18%,rgba(255,255,255,.08) 60%,transparent)}
.book__label{position:absolute;left:0;right:0;bottom:0;background:rgba(246,239,227,.94);padding:.4rem .5rem .45rem;z-index:2}
.book__label b{display:block;font-family:var(--serif);font-size:.82rem;line-height:1.15;color:var(--ink)}
.book__label span{display:block;font-size:.62rem;color:var(--muted);margin-top:.15rem;text-transform:uppercase;letter-spacing:.06em}
.book__spine{position:absolute;left:-26px;top:0;width:26px;height:100%;background:var(--spine,var(--wood));transform:rotateY(-90deg);transform-origin:right center;border-radius:3px 0 0 3px;box-shadow:inset -3px 0 6px rgba(0,0,0,.3)}
.book__spine i{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-90deg);white-space:nowrap;font-family:var(--serif);font-style:normal;font-size:.68rem;letter-spacing:.06em;color:rgba(255,255,255,.9)}
.book__pages{position:absolute;right:-24px;top:3px;bottom:3px;width:24px;background:repeating-linear-gradient(90deg,#FBF7EE 0 2px,#E4DCCB 2px 3px);transform:rotateY(90deg);transform-origin:left center}
.book:hover,.book:focus-visible{transform:translateZ(60px) translateY(-14px) rotateY(6deg);z-index:3;outline:0}
.shelf__plank{position:relative;height:22px;background:linear-gradient(180deg,var(--wood-x),var(--wood-l) 40%,var(--wood));transform:rotateX(58deg);transform-origin:top center;margin:0 -1.4rem;box-shadow:0 10px 12px rgba(40,25,10,.25)}
.shelf__front{position:relative;height:16px;background:linear-gradient(180deg,var(--wood),var(--wood-d));margin:0 -1.4rem;border-radius:0 0 6px 6px}
.shelf__sign{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--moss);color:#fff;font-family:var(--serif);font-style:italic;padding:.25rem 1rem;border-radius:4px;font-size:.95rem;box-shadow:var(--sh-s);white-space:nowrap}

/* ---------- Kệ theo thể loại ---------- */
.genre{margin-bottom:2.5rem}
.genre__head{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:.8rem}
.genre__head h3{margin:0}
.genre__head h3 span{font-family:var(--sans);font-weight:400;color:var(--muted);font-size:.85rem;margin-left:.5rem}
.genre__scroll{display:flex;gap:1.2rem;overflow-x:auto;scroll-snap-type:x mandatory;padding:.5rem .4rem 1rem;scrollbar-width:thin;scrollbar-color:var(--wood-x) transparent}
.genre__plank{height:16px;background:linear-gradient(180deg,var(--wood-l),var(--wood) 55%,var(--wood-d));border-radius:3px;box-shadow:0 8px 14px -6px rgba(40,25,10,.45);margin-top:-.6rem}
.tile{flex:0 0 150px;scroll-snap-align:start;position:relative}
.tile__cover{aspect-ratio:2/3;border-radius:2px 6px 6px 2px;box-shadow:3px 5px 14px rgba(40,25,10,.3);position:relative;overflow:hidden;transition:transform .3s}
.tile__cover::before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;background:linear-gradient(90deg,rgba(0,0,0,.35),transparent)}
.tile:hover .tile__cover{transform:translateY(-6px)}
.tile__cover .book__label{padding:.35rem .45rem}
.tile__cover .book__label b{font-size:.8rem}
.tag{position:absolute;top:8px;right:-6px;background:var(--paper);color:var(--wood-d);font-family:var(--serif);font-weight:700;font-size:.85rem;padding:.2rem .5rem .2rem .8rem;border-radius:3px;box-shadow:var(--sh-s);z-index:3}
.tag::before{content:"";position:absolute;left:-6px;top:50%;transform:translateY(-50%) rotate(45deg);width:12px;height:12px;background:var(--paper)}
.tag::after{content:"";position:absolute;left:3px;top:50%;transform:translateY(-50%);width:4px;height:4px;border-radius:50%;background:var(--wood-x)}
.tag--old{background:#F3E3C4}
.tag--old::before{background:#F3E3C4}
.tile__meta{padding:.55rem .1rem 0;font-size:.85rem}
.tile__meta b{display:block;font-family:var(--serif);font-size:1rem;line-height:1.2}
.tile__meta span{color:var(--muted)}

/* ---------- Nhân viên gợi ý (giấy note viết tay) ---------- */
.notes{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.note{position:relative;background:#FFF8DC;padding:2.2rem 1.6rem 1.6rem;box-shadow:2px 6px 16px rgba(60,40,20,.18);font-family:var(--hand);font-size:1.35rem;line-height:1.35;color:#3A2E1E;transform:rotate(-1.5deg)}
.note:nth-child(2){transform:rotate(1.2deg);background:#EAF1E1}
.note:nth-child(3){transform:rotate(-.6deg);background:#FBE7DA}
.note::before{content:"";position:absolute;top:-12px;left:50%;transform:translateX(-50%) rotate(-3deg);width:90px;height:26px;background:rgba(255,255,255,.55);border:1px solid rgba(0,0,0,.05);box-shadow:0 1px 2px rgba(0,0,0,.08)}
.note:hover{transform:rotate(0) scale(1.02);transition:.3s}
.note__book{font-family:var(--serif);font-weight:700;font-size:1.25rem;color:var(--wood-d);margin-bottom:.4rem}
.note__by{display:flex;align-items:center;gap:.6rem;margin-top:1rem;font-size:1.1rem;color:var(--muted)}
.note__ini{width:38px;height:38px;border-radius:50%;background:var(--wood);color:#fff;display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:1rem;letter-spacing:.02em}

/* ---------- Đọc thử: lật trang 3D ---------- */
.flipwrap{display:grid;grid-template-columns:1fr 1.5fr;gap:3rem;align-items:center}
.flip{perspective:2200px}
.flip__book{position:relative;display:grid;grid-template-columns:1fr 1fr;height:440px;background:var(--paper);border-radius:6px;box-shadow:0 20px 40px -18px rgba(40,25,10,.5),0 0 0 8px var(--wood-d),0 0 0 9px var(--wood-x);transform-style:preserve-3d}
.flip__book::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:32px;transform:translateX(-50%);background:linear-gradient(90deg,transparent,rgba(60,40,20,.14) 50%,transparent);z-index:1;pointer-events:none}
.page{padding:2rem 2.2rem;font-family:var(--serif);font-size:1.05rem;line-height:1.65;overflow:hidden;position:relative}
.page h4{font-size:1.25rem;margin-bottom:.8rem}
.page p{margin-bottom:.8rem}
.page .pnum{position:absolute;bottom:1rem;left:0;right:0;text-align:center;font-size:.8rem;color:var(--muted);font-family:var(--sans)}
.page--left{border-right:1px solid var(--line)}
.leaf{position:absolute;left:50%;top:0;width:50%;height:100%;transform-origin:left center;transform-style:preserve-3d;transition:transform .95s cubic-bezier(.4,.1,.2,1);z-index:2}
.leaf__face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--paper);border-radius:0 6px 6px 0}
.leaf__face--back{transform:rotateY(180deg);border-radius:6px 0 0 6px;border-right:1px solid var(--line)}
.flip.is-flipped .leaf{transform:rotateY(-180deg)}
.flip__ctrl{display:flex;justify-content:center;align-items:center;gap:1rem;margin-top:1.4rem}
.flip__ctrl .cnt{font-family:var(--serif);font-size:1.05rem;color:var(--wood-d);min-width:110px;text-align:center}
.flip__ctrl button:disabled{opacity:.4;cursor:not-allowed}
.drop{font-size:3.2rem;float:left;line-height:.85;margin:.1rem .5rem 0 0;color:var(--moss);font-weight:600}

/* ---------- Góc đọc & cà phê ---------- */
.corner{display:grid;grid-template-columns:1.3fr 1fr;gap:2.5rem;align-items:start}
.corner__pics{display:grid;grid-template-columns:2fr 1fr;grid-template-rows:220px 220px;gap:.8rem}
.corner__pics .ph{border-radius:var(--r)}
.corner__pics .ph:first-child{grid-row:1/3}
.menu{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1.6rem 1.8rem;box-shadow:var(--sh-s)}
.menu h3{display:flex;justify-content:space-between;align-items:baseline}
.menu h3 small{font-family:var(--sans);font-weight:400;font-size:.8rem;color:var(--muted)}
.menu ul{list-style:none;padding:0;margin:0 0 1.2rem}
.menu li{display:flex;align-items:baseline;gap:.5rem;padding:.45rem 0;font-size:.95rem}
.menu li .nm{font-family:var(--serif);font-size:1.05rem}
.menu li .ld{flex:1;border-bottom:2px dotted var(--wood-x);transform:translateY(-4px)}
.menu li .pr{font-weight:600;color:var(--wood-d)}
.menu li small{color:var(--muted);font-size:.78rem}

/* ---------- Sự kiện ---------- */
.events{display:grid;gap:1rem}
.event{display:grid;grid-template-columns:86px 1fr auto;gap:1.4rem;align-items:center;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1.1rem 1.4rem;transition:.2s}
.event:hover{box-shadow:var(--sh);transform:translateY(-2px)}
.event--past{opacity:.75;background:transparent}
.date{background:var(--wood);color:var(--cream);border-radius:8px;text-align:center;padding:.5rem .3rem;font-family:var(--serif);line-height:1}
.date b{display:block;font-size:2rem;font-weight:700}
.date span{display:block;font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;margin-top:.25rem;font-family:var(--sans)}
.date--moss{background:var(--moss)}
.event h3{margin:0 0 .25rem}
.event__meta{font-size:.88rem;color:var(--muted);display:flex;gap:1rem;flex-wrap:wrap}
.event__meta span::before{content:"· ";color:var(--gold)}

/* ---------- Sách cũ trao đổi ---------- */
.swap{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.swap__steps{list-style:none;padding:0;margin:1.2rem 0;display:grid;gap:.8rem;counter-reset:s}
.swap__steps li{display:flex;gap:1rem;align-items:flex-start}
.swap__steps li::before{counter-increment:s;content:counter(s);flex:0 0 34px;height:34px;border-radius:50%;background:var(--moss);color:#fff;display:grid;place-items:center;font-family:var(--serif);font-weight:700}
.swap__steps b{display:block}
.swap__steps span{font-size:.9rem;color:var(--muted)}
.sec--wood .swap__steps span{color:#D9CBB5}

/* ---------- Form ---------- */
.form{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1.8rem;box-shadow:var(--sh-s);color:var(--ink)}
.form h3{margin-bottom:1rem}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.f-grp{margin-bottom:1rem}
.f-grp label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.35rem}
.f-grp input,.f-grp select,.f-grp textarea{width:100%;padding:.65rem .8rem;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--ink)}
.f-grp input:focus,.f-grp select:focus,.f-grp textarea:focus{outline:2px solid var(--moss-l);border-color:var(--moss)}
.f-grp textarea{min-height:110px;resize:vertical}
.f-check{display:flex;gap:.5rem;align-items:flex-start;font-size:.9rem}
.f-check input{margin-top:.25rem;width:auto;flex:0 0 auto}
.f-note{font-size:.82rem;color:var(--muted);margin-top:.8rem}

/* ---------- Newsletter ---------- */
.news{background:var(--moss);color:#fff;padding:3rem 0}
.news__in{display:grid;grid-template-columns:1.2fr 1fr;gap:2rem;align-items:center}
.news h2{color:#fff;margin-bottom:.4rem}
.news p{color:#DCE5D6;margin:0}
.news form{display:flex;gap:.6rem}
.news input{flex:1;padding:.75rem 1rem;border:0;border-radius:6px;min-width:0}

/* ---------- Footer ---------- */
.footer{background:var(--wood-d);color:#D9CBB5;padding:3.5rem 0 1.5rem;font-size:.92rem}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2.5rem}
.footer h4{color:#fff;margin-bottom:.8rem}
.footer a{color:#EAD9BE}
.footer a:hover{color:#fff}
.footer ul{list-style:none;padding:0;margin:0}
.footer li{margin-bottom:.45rem}
.hours li{display:flex;justify-content:space-between;gap:1rem;border-bottom:1px dashed rgba(255,255,255,.15);padding-bottom:.35rem}
.hours b{color:#fff;font-weight:600}
.logo--light{color:#fff}
.logo--light .logo__mark{background:var(--cream);color:var(--wood-d);box-shadow:inset 4px 0 0 var(--wood-x)}
.logo--light .logo__text small{color:#B7C9B0}
.footer__bot{border-top:1px solid rgba(255,255,255,.12);margin-top:2.5rem;padding-top:1.2rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;font-size:.82rem;color:#A99880}

/* ---------- Trang phụ: tiêu đề trang ---------- */
.pagehead{padding:2.8rem 0 2rem;border-bottom:1px solid var(--line);background:var(--paper)}
.pagehead h1{font-size:clamp(2rem,4vw,3rem);margin-bottom:.4rem}
.pagehead p{color:var(--muted);margin:0;max-width:60ch}
.crumb{font-size:.82rem;color:var(--muted);margin-bottom:.6rem}
.crumb a{color:var(--moss)}

/* ---------- Trang sách: bộ lọc + lưới ---------- */
.filters{display:flex;gap:.8rem;flex-wrap:wrap;align-items:end;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1.2rem;margin:2rem 0 1.5rem;position:sticky;top:78px;z-index:10;box-shadow:var(--sh-s)}
.filters .f-grp{margin:0;flex:1 1 150px}
.filters .f-grp select{padding:.55rem .7rem}
.filters .count{margin-left:auto;font-size:.88rem;color:var(--muted);white-space:nowrap}
.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1.6rem 1.3rem}
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:.9rem;transition:.2s;display:flex;flex-direction:column}
.card:hover{box-shadow:var(--sh);transform:translateY(-3px)}
.card__cover{aspect-ratio:2/3;border-radius:2px 6px 6px 2px;overflow:hidden;position:relative;box-shadow:3px 4px 12px rgba(40,25,10,.25);margin-bottom:.8rem}
.card__cover::before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;background:linear-gradient(90deg,rgba(0,0,0,.35),transparent);z-index:1}
.card__cover .chip{position:absolute;top:8px;right:8px;z-index:3}
.card h3{font-size:1.08rem;margin-bottom:.1rem}
.card .au{font-size:.85rem;color:var(--muted);margin-bottom:.5rem}
.card__foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:.5rem}
.card__foot .btn{padding:.35rem .7rem;font-size:.8rem}
.empty{text-align:center;padding:3rem;color:var(--muted);border:1px dashed var(--line);border-radius:var(--r)}

/* ---------- Chi tiết sách ---------- */
.detail{display:grid;grid-template-columns:380px 1fr;gap:3.5rem;align-items:start;padding:3rem 0}
.cover3d{perspective:1200px;padding:1.5rem 0 2rem}
.cover3d__book{position:relative;width:280px;height:420px;margin:0 auto;transform-style:preserve-3d;transform:rotateY(-24deg) rotateX(4deg);transition:transform .6s}
.cover3d:hover .cover3d__book{transform:rotateY(-10deg) rotateX(2deg)}
.cover3d__front{position:absolute;inset:0;z-index:1;border-radius:3px 10px 10px 3px;overflow:hidden;box-shadow:20px 30px 50px -10px rgba(40,25,10,.5)}
.cover3d__front::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.3),transparent 12%,rgba(255,255,255,.1) 55%,transparent)}
.cover3d__front .book__label{padding:.8rem 1rem}
.cover3d__front .book__label b{font-size:1.3rem}
.cover3d__front .book__label span{font-size:.75rem}
.cover3d__spine{position:absolute;left:0;top:0;width:44px;height:100%;background:var(--spine,var(--wood));transform:rotateY(-90deg) translateX(-22px) translateZ(22px);transform-origin:left center;box-shadow:inset -6px 0 10px rgba(0,0,0,.3)}
.cover3d__spine i{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%) rotate(-90deg);white-space:nowrap;font-family:var(--serif);font-style:normal;font-size:1rem;letter-spacing:.08em;color:rgba(255,255,255,.9)}
.cover3d__pages{position:absolute;right:0;top:4px;bottom:4px;width:40px;background:repeating-linear-gradient(90deg,#FBF7EE 0 2px,#E4DCCB 2px 3px);transform:rotateY(90deg) translateX(20px) translateZ(-20px);transform-origin:right center}
.cover3d__shadow{width:260px;height:20px;margin:1.8rem auto 0;border-radius:50%;background:radial-gradient(rgba(40,25,10,.35),transparent 70%)}
.detail h1{font-size:clamp(2rem,3.6vw,2.8rem);margin-bottom:.3rem}
.detail .au{font-family:var(--serif);font-style:italic;font-size:1.2rem;color:var(--muted);margin-bottom:1rem}
.detail__buy{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin:1.2rem 0 1.6rem;padding:1rem 1.2rem;background:var(--paper);border:1px solid var(--line);border-radius:var(--r)}
.detail__buy .price{font-size:1.8rem}
.qty{display:inline-flex;border:1px solid var(--line);border-radius:6px;overflow:hidden}
.qty button{width:34px;border:0;background:#fff;font-size:1.1rem}
.qty input{width:44px;text-align:center;border:0;border-left:1px solid var(--line);border-right:1px solid var(--line)}
.info{width:100%;border-collapse:collapse;font-size:.92rem;margin-bottom:1.5rem}
.info th,.info td{padding:.55rem .6rem;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.info th{width:34%;font-weight:600;color:var(--muted)}
.stars{color:var(--gold);letter-spacing:.05em}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.review{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem 1.3rem}
.review p{font-family:var(--serif);font-size:1.05rem;margin-bottom:.6rem}
.review .who{font-size:.85rem;color:var(--muted);display:flex;justify-content:space-between}

/* ---------- Góc đọc: đặt chỗ ---------- */
.slots{display:flex;gap:.6rem;flex-wrap:wrap;margin:.6rem 0 1.2rem}
.slot{border:1.5px solid var(--wood-x);background:#fff;border-radius:999px;padding:.45rem 1rem;font-weight:500;font-size:.9rem;color:var(--wood-d);transition:.15s}
.slot:hover{background:var(--cream-d)}
.slot.is-on{background:var(--moss);border-color:var(--moss);color:#fff}
.slot:disabled{opacity:.4;text-decoration:line-through;cursor:not-allowed}
.seatmap{display:grid;grid-template-columns:repeat(6,1fr);gap:.5rem;max-width:380px;margin:.6rem 0 1rem}
.seat{aspect-ratio:1;border-radius:8px 8px 3px 3px;border:1.5px solid var(--wood-x);background:#fff;font-size:.75rem;font-weight:600;color:var(--wood-d)}
.seat.is-on{background:var(--moss);color:#fff;border-color:var(--moss)}
.seat:disabled{background:var(--cream-d);color:#B3A692;cursor:not-allowed;border-color:var(--line)}
.legend{display:flex;gap:1.2rem;font-size:.82rem;color:var(--muted);flex-wrap:wrap}
.legend i{display:inline-block;width:12px;height:12px;border-radius:3px;border:1.5px solid var(--wood-x);vertical-align:-1px;margin-right:.3rem;background:#fff}
.legend i.on{background:var(--moss);border-color:var(--moss)} .legend i.off{background:var(--cream-d);border-color:var(--line)}
.summary{background:var(--moss-l);border-radius:8px;padding:.8rem 1rem;font-size:.92rem;margin-bottom:1rem}
.summary b{color:var(--moss-d)}
.rules{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.rule{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1.2rem}
.rule .ic{font-family:var(--serif);font-size:2rem;color:var(--moss);line-height:1;margin-bottom:.5rem}
.rule b{display:block;margin-bottom:.2rem}
.rule span{font-size:.88rem;color:var(--muted)}

/* ---------- Liên hệ ---------- */
.contact{display:grid;grid-template-columns:1fr 1.1fr;gap:3rem;align-items:start}
.cinfo{display:grid;gap:1rem}
.cinfo__item{display:flex;gap:1rem;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1.2rem}
.cinfo__item .ic{flex:0 0 40px;height:40px;border-radius:8px;background:var(--moss-l);color:var(--moss-d);display:grid;place-items:center;font-family:var(--serif);font-weight:700;font-size:1.1rem}
.cinfo__item b{display:block}
.cinfo__item span{font-size:.9rem;color:var(--muted)}
.map{position:relative;height:300px;border-radius:var(--r);overflow:hidden;background:#E9E2D2 repeating-linear-gradient(0deg,transparent 0 38px,rgba(107,74,43,.12) 38px 40px),repeating-linear-gradient(90deg,transparent 0 38px,rgba(107,74,43,.12) 38px 40px);border:1px solid var(--line)}
.map::before{content:"";position:absolute;left:0;right:0;top:44%;height:26px;background:#D8CDB6}
.map::after{content:"";position:absolute;top:0;bottom:0;left:58%;width:22px;background:#D8CDB6}
.map__pin{position:absolute;left:58%;top:44%;transform:translate(-50%,-100%);background:var(--red);color:#fff;padding:.3rem .7rem;border-radius:6px;font-size:.8rem;font-weight:600;white-space:nowrap}
.map__pin::after{content:"";position:absolute;left:50%;bottom:-7px;transform:translateX(-50%);border:7px solid transparent;border-top-color:var(--red);border-bottom:0}
.map__lbl{position:absolute;font-size:.72rem;color:var(--muted);font-style:italic}
.faq details{background:var(--paper);border:1px solid var(--line);border-radius:8px;padding:.8rem 1.1rem;margin-bottom:.6rem}
.faq summary{cursor:pointer;font-weight:600;font-family:var(--serif);font-size:1.08rem}
.faq p{margin:.6rem 0 0;font-size:.92rem;color:var(--muted)}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .grid{grid-template-columns:repeat(4,1fr)}
  .book{width:74px;height:126px}
  .book:nth-child(2n){width:78px;height:134px}
  .book:nth-child(3n){height:120px}
  .book:nth-child(5){width:80px;height:140px}
  .shelf__row{gap:8px}
  .detail{grid-template-columns:320px 1fr;gap:2.5rem}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
  .burger{display:flex}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;gap:0;padding:.5rem 4%;margin:0;box-shadow:var(--sh)}
  .nav.is-open{display:flex}
  .nav a{padding:.8rem 0;border-bottom:1px solid var(--line)}
  .search{min-width:0;flex:1}
  .hero__in{grid-template-columns:1fr;gap:2.5rem}
  .shelf3d{perspective:1000px}
  .notes{grid-template-columns:1fr;max-width:520px;margin:0 auto}
  .flipwrap{grid-template-columns:1fr}
  .corner{grid-template-columns:1fr}
  .swap{grid-template-columns:1fr}
  .news__in{grid-template-columns:1fr}
  .grid{grid-template-columns:repeat(3,1fr)}
  .filters{position:static}
  .detail{grid-template-columns:1fr}
  .reviews{grid-template-columns:1fr}
  .rules{grid-template-columns:1fr 1fr}
  .contact{grid-template-columns:1fr}
}
@media (max-width:640px){
  .header__in{flex-wrap:wrap;gap:.7rem;padding:.6rem 0}
  .logo{order:1;font-size:1.3rem}
  .burger{order:2;margin-left:auto}
  .cart{order:3;padding:.4rem .6rem;font-size:.85rem}
  .search{order:4;flex:1 1 100%;margin:0}
  .nav{top:100%}
  .hero{padding:2.2rem 0 3rem}
  /* Kệ 3D đổ thành dải cuộn ngang, bỏ xoay */
  .shelf3d{perspective:none}
  .shelf{padding:1.2rem .8rem 0;box-shadow:inset 0 0 0 6px var(--wood),inset 0 0 0 7px var(--wood-d)}
  .shelf__row{justify-content:flex-start;overflow-x:auto;gap:10px;padding:.8rem .4rem .4rem;min-height:0;transform:none;scroll-snap-type:x mandatory}
  .book,.book:nth-child(2n),.book:nth-child(3n),.book:nth-child(5),.book:nth-child(n+7){display:block;width:84px;height:130px;transform:none;scroll-snap-align:start}
  .shelf::before{transform:none}
  .book:hover{transform:translateY(-6px)}
  .book__spine,.book__pages{display:none}
  .shelf__plank{transform:none;height:12px;margin:0 -.8rem}
  .shelf__sign{font-size:.85rem}
  .tile{flex-basis:128px}
  .flip__book{display:block;height:auto;box-shadow:0 0 0 6px var(--wood-d)}
  .flip__book::before{display:none}
  .page--left,.page--right{display:none}
  .leaf{position:relative;left:0;width:100%;height:auto;transform:none!important}
  .leaf__face{position:relative;inset:auto;border-radius:6px}
  .leaf__face--back{transform:none;display:none;border:0}
  .flip.is-flipped .leaf__face--front{display:none}
  .flip.is-flipped .leaf__face--back{display:block}
  .page{padding:1.4rem 1.2rem 2.4rem;font-size:1rem}
  .corner__pics{grid-template-columns:1fr 1fr;grid-template-rows:180px 150px}
  .event{grid-template-columns:70px 1fr;gap:1rem}
  .event .btn{grid-column:2}
  .date b{font-size:1.6rem}
  .f-row{grid-template-columns:1fr}
  .news form{flex-direction:column}
  .footer__grid{grid-template-columns:1fr;gap:1.8rem}
  .grid{grid-template-columns:1fr 1fr;gap:1rem .8rem}
  .filters{padding:.8rem}
  .cover3d__book{width:220px;height:330px}
  .rules{grid-template-columns:1fr}
  .seatmap{max-width:100%}
}

/* ---------- Bổ sung cho trang phụ ---------- */
.card__cover{display:block}
.card h3 a{color:var(--ink)}
.card h3 a:hover{color:var(--wood)}
.card.is-hidden{display:none}
.desc{font-family:var(--serif);font-size:1.08rem;line-height:1.7;max-width:64ch}
.desc p{margin-bottom:.9rem}
.detail__tags{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:.8rem}
.detail__stock{font-size:.88rem;color:var(--muted);flex-basis:100%}
.rating{display:flex;align-items:center;gap:.6rem;font-size:.9rem;color:var(--muted);margin-bottom:1rem}
.rating b{font-family:var(--serif);font-size:1.15rem;color:var(--ink)}
.evwrap{display:grid;grid-template-columns:1.45fr 1fr;gap:3rem;align-items:start}
.evwrap .form{position:sticky;top:94px}
.evtabs{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1.4rem}
.evtabs button{border:1.5px solid var(--wood-x);background:#fff;border-radius:999px;padding:.4rem .95rem;font-size:.88rem;font-weight:500;color:var(--wood-d)}
.evtabs button.is-on{background:var(--wood);border-color:var(--wood);color:#fff}
.event.is-hidden{display:none}
.event__type{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--moss);font-weight:600;margin-bottom:.15rem;display:block}
.event--past .date{background:var(--cream-d);color:var(--muted)}
.event--past h3{color:var(--muted)}
.event--past .btn{opacity:.85}
.booking{display:grid;grid-template-columns:1.1fr 1fr;gap:3rem;align-items:start}
.booking h3{margin-bottom:.2rem}
.booking .hint{font-size:.88rem;color:var(--muted);margin-bottom:.2rem}
.seat--win{border-color:var(--gold);background:#FFF8DC}
.legend i.win{background:#FFF8DC;border-color:var(--gold)}
.corner__intro{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center;margin-bottom:3rem}
.corner__stats{display:flex;gap:2rem;flex-wrap:wrap;margin-top:1.2rem}
.corner__stats b{display:block;font-family:var(--serif);font-size:2rem;color:var(--wood-d);line-height:1}
.corner__stats span{font-size:.85rem;color:var(--muted)}
.menu--wide{padding:2rem 2.4rem}
.menu--wide ul{columns:2;column-gap:3rem}
.menu--wide li{break-inside:avoid}
.contact__form{margin:0}
@media (max-width:980px){
  .evwrap{grid-template-columns:1fr}
  .evwrap .form{position:static}
  .booking{grid-template-columns:1fr}
  .corner__intro{grid-template-columns:1fr}
}
@media (max-width:640px){
  .menu--wide{padding:1.4rem 1.2rem}
  .menu--wide ul{columns:1}
}