/* Akasha Lib — tàng thư giữa dải ngân hà tím xanh */
@font-face{font-family:"Gustavo";src:url("/akasha/fonts/Gustavo-Regular.woff2") format("woff2"),url("/akasha/fonts/Gustavo-Regular.otf") format("opentype");font-weight:300 500;font-display:swap}
@font-face{font-family:"Gustavo";src:url("/akasha/fonts/Gustavo-Bold.woff2") format("woff2"),url("/akasha/fonts/Gustavo-Bold.otf") format("opentype");font-weight:600 900;font-display:swap}
:root{
  --bg:#0B0A1C; --surface:#18143A; --surface-2:#221C4A; --line:#2D2660; --line-2:#463D82;
  --fg:#F2EEE6; --fg-2:#C9C3B7; --muted:#A39D92; --accent:#E8A84A; --accent-ink:#17130C;
  --free:#7FC8A9; --free-ink:#0E2A1F; --vip:#E8A84A;
  /* Toàn bộ chữ dùng Gustavo (nếu có file trong public/fonts). Chưa có thì dùng Unbounded cho tiêu đề, Be Vietnam Pro cho chữ thường */
  --display:"Gustavo","Unbounded","Be Vietnam Pro",system-ui,sans-serif;
  --body:"Gustavo","Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --wb-font:var(--display);
  --gutter:clamp(16px,4vw,56px);
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);position:relative;isolation:isolate;min-height:100vh;color:var(--fg);font-family:var(--body);font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--accent)}
img{max-width:100%}
button,input,textarea,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
[hidden]{display:none!important}
.wrap{padding-inline:var(--gutter)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* header */
header.top{position:sticky;top:0;z-index:30;background:rgba(11,10,28,.78);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;padding-block:12px}
.logo{display:flex;align-items:center;gap:10px;color:var(--fg);text-decoration:none;background:none;border:0;padding:0;cursor:pointer}
.logo b{font-family:var(--display);font-size:23px;font-weight:700}
.logo b span{color:var(--accent);font-weight:500}
.search{flex:1 1 280px;max-width:520px;margin-left:auto;position:relative}
.search svg{position:absolute;left:15px;top:50%;translate:0 -50%;pointer-events:none}
.search input{width:100%;height:44px;border-radius:22px;border:1px solid var(--line);background:var(--surface);padding:0 16px 0 44px}
.search input::placeholder{color:#8E897F}
.hbtn{display:inline-flex;align-items:center;gap:7px;height:42px;padding:0 15px;border-radius:21px;border:1px solid var(--line-2);background:transparent;cursor:pointer;font-size:14px;font-weight:500;white-space:nowrap;text-decoration:none;color:var(--fg)}
.hbtn.gold{border-color:var(--accent);color:var(--accent)}
.tags{display:flex;gap:6px;overflow-x:auto;padding-block:0 12px;scrollbar-width:none}
.tags::-webkit-scrollbar{display:none}
.tags button{flex:0 0 auto;height:36px;padding:0 15px;border-radius:18px;border:1px solid transparent;background:var(--surface);color:var(--fg-2);cursor:pointer;font-size:14px}
.tags button[aria-pressed="true"]{background:var(--fg);color:var(--bg);font-weight:600}
.tags .sep{flex:0 0 1px;background:var(--line);margin:6px 4px}
.tags button.tier[aria-pressed="true"]{background:var(--surface-2);color:var(--fg);border-color:var(--line-2)}

/* hero */
.hero{display:flex;flex-wrap:wrap;gap:40px;align-items:center;justify-content:space-between;padding-block:40px 36px;border-bottom:1px solid var(--line)}
.hero .txt{flex:1 1 420px;min-width:0;max-width:660px}
.eyebrow{font-size:12px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.hero h1{font-family:var(--display);font-size:clamp(32px,4.6vw,56px);line-height:1.06;margin:12px 0 8px;text-wrap:balance}
.hero .by{color:var(--fg-2);font-size:17px}
.hero p.sum{color:var(--fg-2);font-size:16px;line-height:1.7;margin:18px 0 0;max-width:60ch;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.hero .art{flex:0 0 auto;position:relative;width:min(360px,100%);height:360px}
.hero .art .cover{position:absolute;width:230px;height:345px;left:50%;top:6px;translate:-50% 0;box-shadow:0 30px 60px rgba(0,0,0,.6)}
.hero .art .ghost{position:absolute;width:190px;height:285px;top:36px;opacity:.4;border-radius:6px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.chip{font-size:12px;padding:4px 11px;border-radius:12px;background:var(--surface-2);color:var(--fg-2)}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 22px;border-radius:23px;border:1px solid var(--line-2);background:transparent;color:var(--fg);text-decoration:none;font-weight:500;cursor:pointer;font-size:15px}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
.btn.small{min-height:38px;padding:0 15px;font-size:14px}
.btn:disabled{opacity:.5;cursor:default}

/* kệ */
.shelf{padding-block:26px 0}
.shelf-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.shelf-head h2{margin:0;font-family:var(--display);font-size:23px;font-weight:600;min-width:0}
.shelf-head h2 small{font-family:var(--body);font-size:13px;color:var(--muted);font-weight:400;margin-left:10px}
.tools{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.link{background:none;border:0;color:var(--accent);cursor:pointer;font-size:14px;padding:8px 6px}
.arrow{width:40px;height:40px;border-radius:20px;border:1px solid var(--line);background:transparent;cursor:pointer;display:grid;place-items:center}
.row{display:flex;gap:18px;overflow-x:auto;scroll-snap-type:x proximity;padding:6px var(--gutter) 20px;margin-inline:calc(-1 * var(--gutter));scrollbar-width:none}
.row::-webkit-scrollbar{display:none}

.card{flex:0 0 150px;width:150px;scroll-snap-align:start;background:none;border:0;padding:0;text-align:left;cursor:pointer}
.card .cover{transition:transform .25s ease,box-shadow .25s ease}
.card:hover .cover,.card:focus-visible .cover{transform:translateY(-6px) scale(1.03);box-shadow:0 22px 40px rgba(0,0,0,.6)}
.card .t{margin-top:10px;font-weight:600;font-size:14px;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card .a{font-size:12.5px;color:var(--muted);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.prog{height:3px;border-radius:2px;background:var(--line);margin-top:8px;overflow:hidden}
.prog i{display:block;height:3px;background:var(--accent)}

.cover{position:relative;width:150px;height:225px;border-radius:5px;overflow:hidden;padding:14px 13px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:0 10px 22px rgba(0,0,0,.45);flex:0 0 auto}
.cover::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.3) 0,rgba(0,0,0,0) 6%,rgba(255,255,255,.07) 7%,rgba(0,0,0,0) 9%);pointer-events:none;z-index:3}
.cover .ring{position:absolute;border-radius:50%;border:1px solid currentColor;opacity:.3}
.cover .ca{position:relative;font-size:9px;letter-spacing:.15em;text-transform:uppercase;line-height:1.3;max-height:2.6em;overflow:hidden}
.cover .ct{position:relative;font-family:var(--display);font-weight:700;font-size:18px;line-height:1.12;display:-webkit-box;-webkit-line-clamp:5;-webkit-box-orient:vertical;overflow:hidden}
.cover .pic{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:cover;background:#fff;z-index:1}
.badge{position:absolute;right:7px;top:7px;z-index:4;font-size:9.5px;font-weight:700;letter-spacing:.06em;padding:3px 6px;border-radius:4px;display:inline-flex;align-items:center;gap:3px}
.badge.vip{background:rgba(17,18,20,.85);color:var(--vip)}
.badge.free{background:rgba(17,18,20,.85);color:var(--free)}
.badge.shop{background:var(--vip);color:#1a1206}
.amts{display:flex;flex-wrap:wrap;gap:8px;align-items:end;margin:14px 0 4px}
.chipbtn{height:38px;padding:0 14px;border-radius:19px;border:1px solid var(--line);background:transparent;cursor:pointer;font-weight:600}
.chipbtn[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.amts .custom{display:grid;gap:4px;font-size:12.5px;color:var(--muted)}
.amts .custom input{width:130px;height:38px;background:var(--bg);border:1px solid var(--line);border-radius:9px;padding:0 10px}

/* lưới */
.grid-view{padding-block:26px 40px}
.grid-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:20px}
.grid-head h2{margin:0;font-family:var(--display);font-size:26px;font-weight:600}
.grid-head p{margin:0;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:26px 18px}
.grid .card{width:auto}
.empty{padding:40px 0;color:var(--muted);max-width:56ch}
.more{display:flex;justify-content:center;padding-top:26px}

/* hộp thoại */
dialog{border:0;padding:0;background:var(--surface);color:var(--fg);border-radius:16px;width:min(800px,calc(100vw - 24px));max-height:calc(100vh - 32px);box-shadow:0 40px 90px rgba(0,0,0,.7)}
dialog::backdrop{background:rgba(5,5,7,.74);backdrop-filter:blur(3px)}
.dlg{position:relative;display:flex;flex-wrap:wrap;gap:28px;padding:28px}
.dlg .cover{width:200px;height:300px}
.dlg .cover .ct{font-size:24px}
.dlg .info{flex:1 1 300px;min-width:0}
.dlg h3{font-family:var(--display);font-size:30px;line-height:1.12;margin:8px 0 6px;text-wrap:balance}
.dlg .by{color:var(--fg-2)}
.summary{margin-top:22px;padding:18px 18px 8px;background:var(--bg);border-radius:12px}
.summary h4{margin:0 0 8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.summary p{margin:0 0 10px;line-height:1.7;color:var(--fg-2)}
.summary ul{margin:0 0 10px;padding-left:20px;color:var(--fg-2)}
.summary li{margin-bottom:6px}
.summary small{display:block;color:var(--muted);font-size:12px;padding-bottom:10px}
.close{position:absolute;right:12px;top:12px;width:40px;height:40px;border-radius:20px;border:0;background:var(--surface-2);cursor:pointer;display:grid;place-items:center;z-index:5}
.panel{padding:30px;position:relative}
.panel h3{font-family:var(--display);font-size:26px;margin:0 0 6px}
.panel p{color:var(--fg-2);margin:0 0 14px;max-width:60ch}
.cols{display:flex;flex-wrap:wrap;gap:28px;margin-top:18px}
.cols>section{flex:1 1 300px;min-width:0}
.cols h4{margin:0 0 10px;font-size:15px}
form.f{display:flex;flex-direction:column;gap:12px}
.f label{font-size:13px;color:var(--fg-2);display:flex;flex-direction:column;gap:5px}
.f input,.f textarea{background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:11px 13px}
.f textarea{min-height:90px;resize:vertical}
.msg{font-size:14px;min-height:1.4em;margin:0}
.msg.err{color:#F09A8A}.msg.ok{color:var(--free)}
.qr{display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start}
.qr img{width:220px;height:auto;border-radius:12px;background:#fff;padding:8px}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:14px}
.kv dt{color:var(--muted)}.kv dd{margin:0;font-weight:500;overflow-wrap:anywhere}

footer.foot{border-top:1px solid var(--line);margin-top:44px;padding-block:28px 40px;color:var(--muted);font-size:13px;display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between}
footer.foot a{color:var(--fg-2)}

@media (max-width:680px){.hero .art{display:none}.hero{padding-block:24px}.search{order:3;flex-basis:100%;max-width:none}.hbtn .lbl{display:none}}
@media (prefers-reduced-motion:reduce){.card .cover{transition:none}}

.thanks{margin-top:16px;padding:18px;border:1px solid var(--line);border-radius:14px;background:var(--bg)}
.thanks .heart{font-size:30px;color:var(--vip);line-height:1}
.thanks h4{margin:6px 0 6px;font-family:var(--display);font-size:20px}
.thanks p{margin:0 0 12px}
.thanks small{color:var(--muted);font-weight:400}
.thanks textarea{min-height:80px}
.btn.zalo{background:#0068FF;border-color:#0068FF;color:#fff}

/* ---------- banner chào mừng ---------- */
.welcome{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:center;gap:12px;margin:22px 0 6px;padding:44px 48px;border-radius:28px;overflow:hidden;background:#2E1A47;color:#fff}
.welcome::before{content:"";position:absolute;left:-90px;bottom:-130px;width:300px;height:300px;border-radius:50%;background:#3B2266}
.welcome::after{content:"";position:absolute;left:38%;top:-60px;width:120px;height:120px;border-radius:50%;background:#3B2266}
.welcome .wb-txt{position:relative;z-index:1;max-width:540px}
.welcome .wb-eye{display:inline-block;font-family:var(--wb-font);font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;background:#F3EEFC;color:#2E1A47;padding:7px 12px;border-radius:10px}
.welcome h1{font-family:var(--wb-font);font-weight:800;font-size:clamp(26px,3.1vw,40px);line-height:1.12;letter-spacing:-.01em;margin:16px 0 14px;color:#fff;text-wrap:balance}
.welcome h1 span{color:#C9B8EE}
.welcome p{margin:0;color:#D9CCF4;font-size:16.5px;line-height:1.6;max-width:44ch}
.welcome .wb-act{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.wb-btn{height:50px;padding:0 24px;border-radius:14px;border:0;background:#F3EEFC;color:#2E1A47;font-family:var(--wb-font);font-size:14.5px;font-weight:700;cursor:pointer;box-shadow:0 5px 0 #8F6FCC;transition:transform .12s,box-shadow .12s}
.wb-btn:hover{transform:translateY(-2px);box-shadow:0 7px 0 #8F6FCC}
.wb-btn:active{transform:translateY(4px);box-shadow:0 1px 0 #8F6FCC}
.wb-btn.ghost{background:#5B3A92;color:#fff;box-shadow:0 5px 0 #24133D}
.wb-btn.ghost:hover{box-shadow:0 7px 0 #24133D}.wb-btn.ghost:active{box-shadow:0 1px 0 #24133D}
.welcome .wb-art{position:relative;z-index:1;width:100%;height:auto;max-height:380px}
.wb-x{position:absolute;right:16px;top:16px;z-index:2;width:36px;height:36px;border-radius:12px;border:0;background:#F3EEFC;color:#2E1A47;cursor:pointer;font-size:14px;font-weight:700}
@media (max-width:760px){
  .welcome{grid-template-columns:1fr;padding:28px 20px 14px;gap:4px;border-radius:22px}
  .welcome .wb-art{max-height:250px;margin-top:8px}
  .welcome p{font-size:15px}
  .wb-btn{height:46px;padding:0 18px}
}

/* ---------- bầu trời ngân hà ---------- */
body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
  background:
    radial-gradient(60% 45% at 12% 8%, rgba(124,72,214,.42), transparent 70%),
    radial-gradient(55% 50% at 92% 22%, rgba(46,92,224,.36), transparent 70%),
    radial-gradient(70% 45% at 55% 105%, rgba(150,70,210,.30), transparent 70%),
    radial-gradient(40% 30% at 70% 60%, rgba(70,140,255,.14), transparent 70%),
    linear-gradient(180deg,#0B0A1C 0%,#100C2A 55%,#0B0A1C 100%)}
body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.9;
  background-image:
    radial-gradient(1.4px 1.4px at 20px 30px,#fff,transparent),radial-gradient(1px 1px at 120px 80px,#cfd8ff,transparent),
    radial-gradient(1.6px 1.6px at 200px 160px,#fff,transparent),radial-gradient(1px 1px at 60px 190px,#e6dcff,transparent),
    radial-gradient(1.2px 1.2px at 260px 40px,#fff,transparent),radial-gradient(1px 1px at 300px 220px,#cfd8ff,transparent);
  background-size:320px 260px;animation:twinkle 6s ease-in-out infinite alternate}
@keyframes twinkle{from{opacity:.55}to{opacity:1}}
.shelf,.grid-view,.hero{position:relative}
.cover{box-shadow:0 10px 30px rgba(8,6,30,.6)}
dialog::backdrop{background:rgba(8,6,24,.72);backdrop-filter:blur(3px)}

/* banner: nền ngân hà + icon sách */
.welcome{background:
    radial-gradient(55% 70% at 18% 20%, rgba(124,72,214,.65), transparent 70%),
    radial-gradient(50% 70% at 85% 75%, rgba(46,92,224,.55), transparent 70%),
    radial-gradient(35% 45% at 60% 10%, rgba(180,120,255,.35), transparent 70%),
    linear-gradient(120deg,#1A1040,#120D33 50%,#0F1640)!important;border:1px solid rgba(201,184,238,.18)}
.welcome::before{left:0;bottom:0;top:0;right:0;width:auto;height:auto;border-radius:0;opacity:.85;
  background:transparent;background-image:
    radial-gradient(1.5px 1.5px at 30px 40px,#fff,transparent),radial-gradient(1px 1px at 140px 90px,#d9e2ff,transparent),
    radial-gradient(1.8px 1.8px at 220px 20px,#fff,transparent),radial-gradient(1px 1px at 90px 150px,#efe6ff,transparent),
    radial-gradient(1.2px 1.2px at 250px 130px,#fff,transparent);background-size:280px 180px;animation:twinkle 5s ease-in-out infinite alternate}
.welcome::after{display:none}
.wb-icons{position:absolute;inset:0;z-index:1;pointer-events:none}
.wb-icons svg{position:absolute;width:26px;height:26px;color:#D9CCF4;opacity:.85;animation:wbfloat 7s ease-in-out infinite}
.wb-icons svg:nth-child(2n){animation-duration:9s;animation-delay:-2s;color:#AFC3FF}
.wb-icons svg:nth-child(3n){animation-duration:8s;animation-delay:-4s;width:22px;height:22px}
@keyframes wbfloat{0%,100%{transform:translateY(0) rotate(-4deg)}50%{transform:translateY(-8px) rotate(5deg)}}
@media (prefers-reduced-motion:reduce){body::after,.welcome::before,.wb-icons svg{animation:none}}
@media (max-width:760px){.wb-icons svg{display:none}.wb-icons svg:nth-child(6),.wb-icons svg:nth-child(10){display:block}}

/* banner: chuyển động bay bay trôi trôi */
.welcome .wb-art{animation:artfloat 9s ease-in-out infinite}
.welcome .wb-art .fl{transform-box:fill-box;transform-origin:center;animation:drift 6s ease-in-out infinite}
.welcome .wb-art .fl1{animation-duration:7s}
.welcome .wb-art .fl2{animation-duration:8.5s;animation-delay:-3s}
.welcome .wb-art .fl3{animation-duration:6.5s;animation-delay:-1.5s}
.welcome .wb-art .fl4{animation:moon 10s ease-in-out infinite}
.welcome .wb-art .fig{animation:breathe 5.5s ease-in-out infinite}
.welcome .wb-txt{animation:rise .9s ease-out both}
@keyframes artfloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes drift{0%,100%{transform:translate(0,0) rotate(0)}33%{transform:translate(4px,-10px) rotate(4deg)}66%{transform:translate(-3px,-4px) rotate(-3deg)}}
@keyframes moon{0%,100%{transform:translate(0,0) rotate(0)}50%{transform:translate(-6px,-6px) rotate(-8deg)}}
@keyframes breathe{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:reduce){.welcome .wb-art,.welcome .wb-art .fl,.welcome .wb-txt{animation:none}}

/* tên sách nhỏ lại ~10%, cho phép tên dài tới 50 ký tự */
.card .t{font-size:12.6px;-webkit-line-clamp:3}
.cover .ct{font-size:16.2px;-webkit-line-clamp:6}
.dlg .cover .ct{font-size:21.6px}
.hero h1{font-size:clamp(29px,4.1vw,50px)}
.dlg h3{font-size:27px}