:root{
  --sky-bg:#E6F4FF; --surface:#FFFFFF; --ink:#2B2D42; --muted:#5F6680; --line:#D8E4F2;
  --coral:#FF6B6B; --sun:#FFC93C; --mint:#2EC4B6; --sky:#4D96FF; --grape:#9B5DE5; --leaf:#45B86A; --pink:#FF8FAB; --orange:#FF9F1C;
  --a:#45B86A; --b:#4D96FF; --c:#FF9F1C;
  --dot:rgba(77,150,255,.12); --soft:#F3F8FF; --grass:#BDEBC2;
  color-scheme: light;
}
*{box-sizing:border-box}
:root{box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
html{scroll-padding-top:env(safe-area-inset-top,0px)}
html,body{margin:0}
body{background:var(--sky-bg);background-image:radial-gradient(var(--dot) 2px,transparent 2.5px);background-size:22px 22px;color:var(--ink);font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;font-size:16px;line-height:1.55}
button,input{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--sky);outline-offset:2px;border-radius:8px}
.fun{font-family:"Baloo 2","Be Vietnam Pro",system-ui,sans-serif}
.wrap{max-width:600px;margin:0 auto;padding:0 16px 110px}
.hidden{display:none!important}

/* ---------- awning header ---------- */
.awning{position:sticky;top:env(safe-area-inset-top,0px);z-index:6}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--coral)}
.awning .stripes{height:20px;background:repeating-linear-gradient(90deg,var(--coral) 0 36px,#fff 36px 72px)}
.awning .scallop{height:12px;background:radial-gradient(circle at 18px 0,var(--coral) 17px,transparent 18px) 0 0/72px 12px repeat-x,radial-gradient(circle at 18px 0,#fff 17px,transparent 18px) 36px 0/72px 12px repeat-x}
.topbar{background:var(--surface);border-bottom:2px solid var(--line);padding:6px 16px 8px}
.topbar .in{max-width:600px;margin:0 auto;display:flex;align-items:center;gap:10px}
.brand{font-size:22px;font-weight:800;line-height:1;color:var(--coral);margin:0}
.brand small{display:block;font-family:"Be Vietnam Pro",sans-serif;font-size:12px;color:var(--muted);font-weight:500;margin-top:3px}
.day{margin-left:auto;background:var(--sun);color:#2B2D42;border-radius:12px;padding:4px 10px;font-weight:700;font-size:13px;text-align:center;line-height:1.2}
body.guest nav.tabs .in{grid-template-columns:repeat(4,1fr)}
body.guest nav.tabs [data-tab="admin"]{display:none}

/* ---------- hero ---------- */
.hero{position:relative;margin:14px 0 6px;background:linear-gradient(180deg,#fff0 0,#fff0 60%,var(--grass) 60%);border-radius:24px;overflow:hidden;padding:18px 18px 0;background-color:var(--surface);border:2px solid var(--line)}
.hero h2{font-size:28px;line-height:1.05;margin:0 0 6px;font-weight:800;letter-spacing:-.01em;max-width:calc(100% - 60px)}
.hero p{margin:0;color:var(--muted);font-size:15px;max-width:30ch}
.hero .sun{position:absolute;right:10px;top:22px;width:48px;height:48px}
.bunting{display:flex;justify-content:space-between;margin:-18px -18px 10px;padding:0 6px}
.bunting span{width:0;height:0;border-left:12px solid transparent;border-right:12px solid transparent;border-top:20px solid var(--c)}
.crew{display:flex;align-items:flex-end;justify-content:center;gap:10px;margin-top:10px;height:96px}
.crew svg{width:58px;height:auto}
@media (prefers-reduced-motion: no-preference){
  .crew svg{animation:hop 2.6s ease-in-out infinite}
  .crew svg:nth-child(2){animation-delay:.25s}.crew svg:nth-child(3){animation-delay:.5s}.crew svg:nth-child(4){animation-delay:.75s}
  @keyframes hop{0%,70%,100%{transform:translateY(0)}80%{transform:translateY(-8px)}90%{transform:translateY(0)}}
}
.counter{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 4px}
.pill{background:var(--surface);border:2px solid var(--line);border-radius:999px;padding:5px 12px;font-weight:700;font-size:14px}
.pill b{color:var(--coral)}

h3.sec{font-family:"Baloo 2",sans-serif;font-size:24px;line-height:1.1;margin:22px 0 6px;font-weight:800}
p.lead{margin:0 0 10px;color:var(--muted)}
.search{position:relative;margin:10px 0}
.search input{width:100%;border:2.5px solid var(--line);background:var(--surface);border-radius:18px;padding:13px 16px 13px 46px;font-size:17px}
.search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:22px;height:22px;color:var(--muted)}
.chips{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 8px;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:2px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px;cursor:pointer;font-weight:600;font-size:14px}
.chip[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--surface)}

/* ---------- book cards ---------- */
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:6px}
@media (min-width:520px){.grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
.bk{position:relative;background:var(--surface);border:2px solid var(--line);border-radius:18px;padding:10px 10px 12px;display:flex;flex-direction:column}
.cv{position:relative;aspect-ratio:3/4;border-radius:6px 12px 12px 6px;background:var(--col);overflow:hidden;box-shadow:inset 8px 0 0 rgba(0,0,0,.12)}
.cv img{width:100%;height:100%;object-fit:cover}
.cv .ttl{position:absolute;left:14px;right:8px;top:10px;color:#fff;font-weight:800;font-size:13px;line-height:1.25;font-family:"Baloo 2",sans-serif}
.cv .face{position:absolute;left:50%;bottom:14%;transform:translateX(-50%);width:46%}
.sticker{position:absolute;top:-8px;right:-6px;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:800;font-family:"Baloo 2",sans-serif;font-size:20px;border:3px solid var(--surface);transform:rotate(8deg)}
.bk h4{font-size:15px;line-height:1.3;margin:10px 0 2px;font-weight:700}
.bk .m{font-size:12.5px;color:var(--muted)}
.tag{position:relative;display:inline-flex;align-items:baseline;gap:6px;margin-top:8px;background:var(--sun);color:#2B2D42;border-radius:6px 12px 12px 6px;padding:3px 10px 3px 16px;font-weight:800;font-size:17px;align-self:flex-start}
.tag::before{content:"";position:absolute;left:5px;top:50%;width:6px;height:6px;margin-top:-3px;border-radius:50%;background:var(--surface)}
.tag s{font-weight:500;font-size:12px;opacity:.7}
.st{display:inline-block;margin-top:8px;font-size:12px;font-weight:700;border-radius:999px;padding:2px 10px;color:#fff;align-self:flex-start}
.st-sell{background:var(--leaf)}.st-sold{background:var(--sky)}.st-exp{background:var(--orange)}.st-gift{background:var(--pink)}
.empty{text-align:center;color:var(--muted);padding:26px 10px}
.empty svg{width:70px;display:block;margin:0 auto 8px}

/* ---------- generic cards / forms ---------- */
.card{background:var(--surface);border:2px solid var(--line);border-radius:22px;padding:16px;margin:14px 0}
.big{display:block;width:100%;border:none;border-radius:18px;padding:15px;font-size:18px;font-weight:800;cursor:pointer;color:#fff;background:var(--ink);font-family:"Baloo 2",sans-serif;box-shadow:0 4px 0 rgba(0,0,0,.18)}
.big:active{transform:translateY(2px);box-shadow:0 2px 0 rgba(0,0,0,.18)}
.big.leaf{background:var(--leaf)}.big.sky{background:var(--sky)}.big.coral{background:var(--coral)}.big.grape{background:var(--grape)}
.big.ghost{background:transparent;color:var(--ink);border:2px solid var(--line);box-shadow:none}
.big+.big{margin-top:10px}
.field{margin:16px 0}
.lbl{display:block;font-weight:700;font-size:15px;margin-bottom:6px}
.hint{font-size:13px;color:var(--muted);margin-top:4px}
.inp{width:100%;border:2.5px solid var(--line);background:var(--soft);border-radius:16px;padding:12px 14px;font-size:18px}
.codein{display:flex;align-items:center;border:2.5px solid var(--line);border-radius:16px;background:var(--soft);overflow:hidden}
.codein span{padding:0 4px 0 14px;font-weight:800;font-family:"Baloo 2",sans-serif;font-size:20px;color:var(--grape)}
.codein input{flex:1;min-width:0;border:none;background:transparent;padding:12px 10px 12px 2px;font-size:20px;font-weight:700}
.gb{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.gb button{border:2.5px solid var(--line);background:var(--surface);border-radius:18px;padding:10px 4px;cursor:pointer}
.gb b{display:block;font-family:"Baloo 2",sans-serif;font-size:30px;line-height:1;color:var(--gc)}
.gb span{font-size:12px;color:var(--muted)}
.gb button[aria-pressed="true"]{background:var(--gc);border-color:var(--gc)}
.gb button[aria-pressed="true"] b,.gb button[aria-pressed="true"] span{color:#fff}
.calc{margin-top:10px;background:var(--soft);border-radius:14px;padding:10px 14px}
.calc b{font-family:"Baloo 2",sans-serif;font-size:24px;color:var(--coral)}
.tg{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.tg button{border:2.5px solid var(--line);background:var(--surface);border-radius:14px;padding:10px;cursor:pointer;font-weight:700}
.tg button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:var(--surface)}
.photo{display:flex;align-items:center;gap:12px}
.ph{width:66px;height:88px;border:2.5px dashed var(--line);border-radius:10px;display:grid;place-items:center;font-size:12px;color:var(--muted);overflow:hidden;flex:none}
.ph img{width:100%;height:100%;object-fit:cover}
.fb{border:2.5px solid var(--line);background:var(--surface);border-radius:14px;padding:10px 14px;cursor:pointer;font-weight:700}
.bigcode{font-family:"Baloo 2",sans-serif;font-size:34px;font-weight:800;color:var(--grape);line-height:1}
.sheet{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}
.sheet button{border:2px dashed #E0B000;background:#FFF6D6;color:#2B2D42;border-radius:10px;padding:8px 2px;font-size:12px;font-weight:800;cursor:pointer}
.sheet button.used{opacity:.45;text-decoration:line-through}
.mini{border:2px solid var(--line);border-radius:16px;overflow:hidden;margin:10px 0}
.mini div{display:flex;justify-content:space-between;gap:8px;padding:10px 12px;border-top:2px solid var(--line);font-size:15px}
.mini div:first-child{border-top:none}
.bad{color:var(--coral);font-weight:700}
.total{display:flex;justify-content:space-between;font-family:"Baloo 2",sans-serif;font-weight:800;font-size:22px}

/* ---------- steps (gửi sách) ---------- */
.steps{list-style:none;padding:0;margin:8px 0;counter-reset:s}
.steps li{position:relative;background:var(--surface);border:2px solid var(--line);border-radius:20px;padding:12px 14px 12px 64px;margin:10px 0;min-height:64px}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:12px;top:12px;width:40px;height:40px;border-radius:14px;background:var(--sc);color:#fff;font-family:"Baloo 2",sans-serif;font-weight:800;font-size:22px;display:grid;place-items:center}
.steps b{display:block}
.steps span{font-size:14px;color:var(--muted)}
.prices{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:8px 0}
.prices div{background:var(--surface);border:2px solid var(--line);border-radius:18px;padding:12px 8px;text-align:center}
.prices b{display:block;font-family:"Baloo 2",sans-serif;font-size:22px;line-height:1.1;color:var(--pc)}
.prices span{font-size:12.5px;color:var(--muted)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.two .card{margin:0}
.two ul{margin:6px 0 0;padding-left:18px;font-size:14px}
.rules li{margin:6px 0}

/* ---------- stats ---------- */
.bubbles{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.bub{border-radius:24px;padding:16px;color:#fff;position:relative;overflow:hidden}
.bub b{display:block;font-family:"Baloo 2",sans-serif;font-size:38px;line-height:1}
.bub span{font-weight:600;font-size:14px}
.bub::after{content:"";position:absolute;right:-18px;bottom:-18px;width:70px;height:70px;border-radius:50%;background:rgba(255,255,255,.18)}
.goal{height:22px;border-radius:999px;background:var(--soft);border:2px solid var(--line);overflow:hidden}
.goal i{display:block;height:100%;background:repeating-linear-gradient(45deg,var(--leaf) 0 12px,#5ccc7d 12px 24px);border-radius:999px}
.bar{display:flex;align-items:center;gap:8px;margin:8px 0;font-size:14px}
.bar .t{width:96px;flex:none;color:var(--muted)}
.bar .f{height:14px;border-radius:7px}

/* ---------- tabs ---------- */
nav.tabs{position:fixed;left:0;right:0;bottom:0;z-index:20;background:var(--surface);border-top:2px solid var(--line);padding:6px 6px calc(6px + env(safe-area-inset-bottom,0px))}
nav.tabs .in{max-width:600px;margin:0 auto;display:grid;grid-template-columns:repeat(5,1fr);gap:2px}
nav.tabs button{border:none;background:none;border-radius:14px;padding:6px 2px;font-size:11.5px;font-weight:700;color:var(--muted);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:2px}
nav.tabs svg{width:24px;height:24px}
nav.tabs button[aria-selected="true"]{background:var(--coral);color:#fff}
.toast{position:fixed;left:50%;bottom:calc(90px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--surface);padding:12px 18px;border-radius:16px;font-weight:700;z-index:30;display:none;max-width:90vw;text-align:center}
.confetti{position:fixed;inset:0;pointer-events:none;z-index:29;overflow:hidden}
.confetti i{position:absolute;top:-12px;width:10px;height:14px;border-radius:3px}
@media (prefers-reduced-motion: no-preference){ .confetti i{animation:fall 1.4s ease-in forwards} @keyframes fall{to{transform:translateY(105vh) rotate(540deg);opacity:.9}} }
.bk{cursor:pointer}
.bk:hover .cv{transform:rotate(-1.5deg)}
@media (prefers-reduced-motion: no-preference){.cv{transition:transform .2s}}
.back{border:2px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px 6px 10px;font-weight:700;cursor:pointer;margin:14px 0 10px;display:inline-flex;align-items:center;gap:4px}
.gal{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;gap:10px;scrollbar-width:none;border-radius:20px}
.gal::-webkit-scrollbar{display:none}
.gal img{flex:none;width:100%;aspect-ratio:3/4;object-fit:cover;scroll-snap-align:center;border-radius:20px;border:2px solid var(--line);background:var(--soft)}
.thumbs{display:flex;gap:8px;overflow-x:auto;padding:10px 2px 4px}
.thumbs button{flex:none;width:54px;height:72px;border:2.5px solid var(--line);border-radius:10px;padding:0;overflow:hidden;cursor:pointer;background:var(--soft)}
.thumbs button[aria-current="true"]{border-color:var(--coral)}
.thumbs img{width:100%;height:100%;object-fit:cover;display:block}
.dt h2{font-family:"Baloo 2",sans-serif;font-size:26px;line-height:1.15;margin:12px 0 4px}
.gradebox{display:flex;gap:12px;align-items:center;background:var(--surface);border:2px solid var(--line);border-radius:18px;padding:12px;margin:12px 0}
.gradebox .g{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;color:#fff;font-family:"Baloo 2",sans-serif;font-size:26px;font-weight:800;flex:none}
.notes{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0}
.notes span{background:var(--soft);border:2px solid var(--line);border-radius:999px;padding:3px 12px;font-size:14px;font-weight:600}
.facts{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:15px}
.facts dt{color:var(--muted)} .facts dd{margin:0;font-weight:600}
.shots{display:flex;gap:8px;overflow-x:auto;padding:4px 0}
.shots .s{position:relative;flex:none;width:66px;height:88px;border-radius:10px;overflow:hidden;border:2.5px solid var(--line)}
.shots .s img{width:100%;height:100%;object-fit:cover}
.shots .s.first{border-color:var(--coral)}
.shots .s em{position:absolute;left:0;right:0;bottom:0;background:var(--coral);color:#fff;font-size:10px;font-style:normal;font-weight:700;text-align:center}
.shots .s button{position:absolute;top:2px;right:2px;width:20px;height:20px;border-radius:50%;border:none;background:rgba(0,0,0,.6);color:#fff;font-size:12px;line-height:20px;padding:0;cursor:pointer}
.shots .s .mk{top:auto;bottom:2px;left:2px;right:auto;width:auto;height:auto;border-radius:6px;padding:1px 5px;font-size:10px;line-height:14px}
.slots{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.slot{position:relative;aspect-ratio:3/4;border:2.5px dashed var(--line);border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;cursor:pointer;background:var(--soft);overflow:hidden;text-align:center;padding:4px}
.slot svg{width:30px;height:30px;color:var(--muted)}
.slot b{font-size:12.5px;line-height:1.25}
.slot.done{border-style:solid;border-color:var(--leaf)}
.slot.done img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.slot.done b{position:absolute;left:0;right:0;bottom:0;background:var(--leaf);color:#fff;padding:2px 0}
.adm{display:inline-block;background:var(--grape);color:#fff;border-radius:10px;padding:2px 10px;font-size:13px;font-weight:700;font-family:"Be Vietnam Pro",sans-serif;vertical-align:middle}

/* ---------- thêm cho bản chạy thật ---------- */
.foot{text-align:center;color:var(--muted);font-size:13px;margin:28px 0 10px}
.foot a{color:var(--muted)}
.loading{text-align:center;color:var(--muted);padding:30px 0}
.login{max-width:420px;margin:30px auto}
.err{color:var(--coral);font-weight:700;margin-top:8px}
.topnav{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0}
.topnav a,.topnav button{border:2px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 14px;font-weight:700;color:var(--ink);text-decoration:none;cursor:pointer;font-size:14px}