/* ============================================================
   Tú Anh's World — Bản HỒNG PHẤN + TRẮNG NGỌC v5
   (pastel pink & pearl white — không dùng màu đỏ chói)
   ============================================================ */
:root{
  --pink:#f27bab; --pink-deep:#d94f8e; --pink-soft:#fdeaf3; --pink-mist:#fbdff0;
  --lav:#a78bdc; --lav-deep:#7e5fc4; --lav-soft:#f2ecfb;
  --mint:#54c79e; --mint-deep:#329e7c; --mint-soft:#e6f7f1;
  --pearl:#fffafc; --paper:#ffffff; --blush:#fef1f7;
  --ink:#453040; --ink-soft:#6d5060; --muted:#a98b9b;
  --line:#f6dbe9;
  --shadow-sm:0 2px 10px rgba(217,79,142,.09);
  --shadow-md:0 10px 30px -10px rgba(217,79,142,.24);
  --shadow-lg:0 24px 60px -18px rgba(217,79,142,.34);
  --radius:20px;
  --font-head:'Quicksand','Be Vietnam Pro',system-ui,sans-serif;
  --font-body:'Be Vietnam Pro','Quicksand',system-ui,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
[hidden]{display:none !important}
html{scroll-behavior:smooth;scroll-padding-top:86px}
body{
  font-family:var(--font-body);
  background:
    radial-gradient(1100px 480px at 88% -6%,rgba(167,139,220,.16),transparent 60%),
    radial-gradient(900px 430px at -6% 14%,rgba(242,123,171,.13),transparent 55%),
    radial-gradient(700px 380px at 50% 110%,rgba(84,199,158,.08),transparent 60%),
    var(--pearl);
  color:var(--ink);line-height:1.75;font-size:17px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit}

/* ---------- Thanh tiến độ ---------- */
.progress-bar{position:fixed;top:0;left:0;height:4px;width:0%;background:linear-gradient(90deg,var(--pink),var(--lav));z-index:1200;border-radius:0 4px 4px 0;transition:width .12s linear}

/* ---------- Nền trang trí lơ lửng ---------- */
.bg-deco{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.deco{position:absolute;font-size:26px;opacity:.45;filter:saturate(.9);animation:drift 16s ease-in-out infinite}
.deco.d1{top:12%;left:4%;animation-delay:0s}
.deco.d2{top:28%;right:6%;font-size:30px;animation-delay:-3s}
.deco.d3{top:52%;left:2%;font-size:34px;animation-delay:-6s}
.deco.d4{top:70%;right:3%;animation-delay:-2s}
.deco.d5{top:86%;left:8%;animation-delay:-8s}
.deco.d6{top:6%;right:30%;font-size:22px;animation-delay:-5s}
.deco.d7{top:40%;left:45%;font-size:20px;animation-delay:-10s}
.deco.d8{top:64%;right:28%;animation-delay:-7s}
@keyframes drift{
  0%,100%{transform:translateY(0) rotate(-4deg)}
  50%{transform:translateY(-22px) rotate(5deg)}
}

/* ---------- Top navigation ---------- */
.topnav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:8px clamp(16px,4vw,40px);
  background:rgba(255,250,252,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s;
}
.topnav.scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex-shrink:0}
.brand-logo{
  width:44px;height:44px;border-radius:50%;
  border:2.5px solid var(--pink);box-shadow:0 3px 10px rgba(242,123,171,.45);
  animation:logoSpin 14s linear infinite;
}
@keyframes logoSpin{
  0%,88%{transform:rotate(0)}92%{transform:rotate(12deg) scale(1.06)}96%{transform:rotate(-8deg)}100%{transform:rotate(0)}
}
.brand-text{font-family:var(--font-head);font-weight:800;font-size:13px;line-height:1.15;color:var(--pink-deep);text-transform:uppercase;letter-spacing:.4px}
.nav-links{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.nav-links::-webkit-scrollbar{display:none}
.nav-links a{
  font-family:var(--font-head);font-size:13px;font-weight:700;
  text-decoration:none;color:var(--ink-soft);white-space:nowrap;
  padding:8px 13px;border-radius:999px;transition:background .2s,color .2s;
}
.nav-links a:hover{background:var(--pink-soft);color:var(--pink-deep)}
.nav-links a.nav-lib{background:var(--lav-soft);color:var(--lav-deep);border:1px solid #e4d7f6}
.nav-links a.nav-game{background:var(--mint-soft);color:var(--mint-deep);border:1px solid #c9ede0}

/* ---------- Hero ---------- */
.hero{position:relative;padding:110px clamp(16px,4vw,40px) 0;z-index:1}
.hero-grid{
  max-width:1120px;margin:0 auto;display:grid;
  grid-template-columns:1.25fr .75fr;gap:30px;align-items:center;
}
.hero-inner{text-align:center}
.hero-badge{
  display:inline-block;font-family:var(--font-head);font-size:13px;font-weight:700;color:var(--pink-deep);
  background:var(--pink-soft);border:1px solid var(--pink-mist);
  padding:8px 18px;border-radius:999px;margin-bottom:22px;
  animation:badgeGlow 3.2s ease-in-out infinite;
}
@keyframes badgeGlow{0%,100%{box-shadow:0 0 0 rgba(242,123,171,0)}50%{box-shadow:0 0 22px rgba(242,123,171,.45)}}
.hero-title{
  font-family:var(--font-head);font-weight:800;
  font-size:clamp(28px,4.6vw,50px);line-height:1.16;letter-spacing:-.5px;color:var(--ink);
}
.hero-title .dot{color:var(--pink);margin:0 .12em}
.hero-sub{font-size:clamp(16px,2.2vw,21px);color:var(--ink-soft);margin-top:16px;font-style:italic}
.hero-sub strong{color:var(--pink-deep);font-style:normal;font-weight:700}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:24px}
.chip{font-family:var(--font-head);font-size:13px;font-weight:600;color:var(--ink-soft);background:var(--paper);border:1px solid var(--line);padding:8px 16px;border-radius:999px;box-shadow:var(--shadow-sm)}
.hero-cta{display:flex;gap:14px;justify-content:center;margin-top:26px;flex-wrap:wrap}
.btn-main{
  font-family:var(--font-head);font-weight:700;font-size:15px;text-decoration:none;
  background:linear-gradient(145deg,var(--pink),var(--pink-deep));color:#fff;
  padding:13px 26px;border-radius:999px;box-shadow:0 8px 22px rgba(242,123,171,.42);
  transition:transform .25s,box-shadow .25s;border:none;cursor:pointer;
}
.btn-main:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 14px 30px rgba(242,123,171,.52)}
.btn-ghost{
  font-family:var(--font-head);font-weight:700;font-size:15px;text-decoration:none;
  background:var(--paper);color:var(--lav-deep);border:1.5px solid var(--lav);
  padding:12px 26px;border-radius:999px;box-shadow:var(--shadow-sm);
  transition:transform .25s,background .25s;cursor:pointer;
}
.btn-ghost:hover{transform:translateY(-3px);background:var(--lav-soft)}

/* ---------- Mascot ---------- */
.hero-mascot{position:relative;text-align:center}
.mascot-ring{
  position:relative;width:min(300px,68vw);margin:0 auto;
  border-radius:34px;background:linear-gradient(160deg,#fff5fa,#fbe3f1);
  border:3px solid var(--pink);box-shadow:var(--shadow-lg);
  overflow:visible;animation:mascotFloat 4.2s ease-in-out infinite;
}
.mascot-ring img{border-radius:31px;width:100%;height:auto}
@keyframes mascotFloat{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-14px) rotate(1.4deg)}}
.mascot-ring::before,.mascot-ring::after{
  content:'💖';position:absolute;font-size:24px;animation:twinkle 2.2s ease-in-out infinite;
}
.mascot-ring::before{top:-14px;left:-16px}
.mascot-ring::after{bottom:-10px;right:-14px;animation-delay:-1.1s;font-size:28px}
@keyframes twinkle{0%,100%{opacity:.35;transform:scale(.8) rotate(0)}50%{opacity:1;transform:scale(1.25) rotate(18deg)}}
.mascot-bubble{
  position:absolute;top:-30px;right:-6px;max-width:210px;
  font-family:var(--font-head);font-size:13px;font-weight:700;line-height:1.45;
  background:#fff;color:var(--pink-deep);border:2px solid var(--pink);
  border-radius:16px 16px 16px 4px;padding:10px 14px;
  box-shadow:var(--shadow-md);text-align:left;
  animation:bubblePop .5s cubic-bezier(.34,1.56,.64,1) both, bubbleFloat 5s ease-in-out 1s infinite;
}
@keyframes bubblePop{from{opacity:0;transform:scale(.5) translateY(14px)}to{opacity:1;transform:scale(1) translateY(0)}}
@keyframes bubbleFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}

.hero-figure{max-width:1120px;margin:44px auto 0;position:relative;z-index:2}
.hero-figure img{width:100%;border-radius:24px;border:6px solid var(--paper);box-shadow:var(--shadow-lg)}
.hero-fade{height:70px;margin-top:-40px;position:relative;z-index:1;background:linear-gradient(to bottom,transparent,var(--pearl))}

/* ---------- Layout ---------- */
.container{max-width:980px;margin:0 auto;padding:0 clamp(16px,4vw,40px);position:relative;z-index:1}
.section{padding:76px 0 30px}
.section-alt{margin:40px calc(50% - 50vw);padding:76px calc(50vw - 50%) 60px;background:linear-gradient(180deg,#fdeff6,rgba(255,250,252,0))}
.section-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:30px}
.section-num{flex-shrink:0;width:58px;height:58px;display:grid;place-items:center;font-family:var(--font-head);font-weight:800;font-size:26px;color:#fff;border-radius:18px;box-shadow:var(--shadow-md)}
.n-red{background:linear-gradient(145deg,var(--pink),var(--pink-deep))}
.n-gold{background:linear-gradient(145deg,var(--lav),var(--lav-deep))}
.n-green{background:linear-gradient(145deg,var(--mint),var(--mint-deep))}
.section-kicker{display:block;font-family:var(--font-head);font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:2px;color:var(--pink);margin-bottom:6px}
.section h2{font-family:var(--font-head);font-weight:800;font-size:clamp(23px,3.4vw,34px);line-height:1.25;letter-spacing:-.3px}

/* ---------- Prose ---------- */
.prose{max-width:820px}
.prose p{margin-bottom:20px;color:var(--ink-soft)}
.prose strong{color:var(--ink)}
.prose em{color:var(--pink-deep)}
.lead{font-size:19px}
.drop::first-letter{float:left;font-family:var(--font-head);font-weight:800;font-size:64px;line-height:.9;color:var(--pink);padding:6px 12px 0 0}

/* ---------- Figures ---------- */
.figure-duo{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin:34px 0}
.figure-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);transition:transform .35s ease,box-shadow .35s ease}
.figure-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.figure-card img{width:100%;aspect-ratio:4/3.15;object-fit:cover}
.figure-card.wide{margin:34px 0}
.figure-card.ending img{aspect-ratio:16/8.4}
.figure-card figcaption{font-family:var(--font-head);font-size:13.5px;font-weight:600;color:var(--muted);padding:14px 18px;border-top:1px solid var(--line);line-height:1.55}
.tilt-l{transform:rotate(-1.1deg)}
.tilt-r{transform:rotate(1.1deg)}
.tilt-l:hover,.tilt-r:hover{transform:rotate(0) translateY(-6px)}

/* ---------- Quote bubbles ---------- */
.quote-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:30px 0}
.bubble{position:relative;font-family:var(--font-head);font-weight:700;font-size:16.5px;line-height:1.55;color:var(--pink-deep);background:var(--pink-soft);border:1px dashed var(--pink-mist);border-radius:16px;padding:20px 22px}
.bubble::before{content:'🗣️';position:absolute;top:-14px;left:18px;font-size:20px;background:var(--pearl);padding:0 6px}

/* ---------- Law cards ---------- */
.law-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:36px 0}
.law-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:26px 24px 22px;box-shadow:var(--shadow-sm);border-top:4px solid var(--pink);transition:transform .3s,box-shadow .3s}
.law-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.law-card:nth-child(2){border-top-color:var(--lav)}
.law-card:nth-child(3){border-top-color:var(--lav-deep)}
.law-card:nth-child(4){border-top-color:var(--mint)}
.law-icon{font-size:28px;margin-bottom:10px}
.law-card h3{font-family:var(--font-head);font-weight:800;font-size:18px;margin-bottom:4px}
.law-ref{font-family:var(--font-head);font-size:12.5px;font-weight:700;color:var(--lav-deep);margin-bottom:10px}
.law-card p{font-size:15px;line-height:1.7;color:var(--ink-soft)}
.law-card p strong{color:var(--ink)}

/* ---------- Callout ---------- */
.callout{display:flex;gap:16px;align-items:flex-start;background:var(--mint-soft);border:1px solid #cdeee1;border-radius:var(--radius);padding:22px 24px;margin-top:8px}
.callout-icon{font-size:26px;line-height:1}
.callout p{font-size:16px;color:var(--ink-soft)}
.callout strong{color:var(--mint-deep)}

/* ---------- Formula ---------- */
.formula{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;margin:38px auto;padding:30px 24px;background:linear-gradient(145deg,#8a6ec9,#6a4ba8);border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.f-word{font-family:var(--font-head);font-weight:800;font-size:clamp(16px,2.6vw,24px);color:#ffe3f1;text-transform:uppercase;letter-spacing:.5px;padding:10px 20px;border:1.5px solid rgba(255,227,241,.45);border-radius:999px}
.f-dash{color:rgba(255,255,255,.6);font-size:22px}

/* ---------- Skills ---------- */
.skill-list{display:flex;flex-direction:column;gap:16px;margin:36px 0}
.skill{display:flex;gap:18px;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow-sm);transition:transform .3s,box-shadow .3s}
.skill:hover{transform:translateX(6px);box-shadow:var(--shadow-md)}
.skill-num{flex-shrink:0;width:44px;height:44px;display:grid;place-items:center;font-family:var(--font-head);font-weight:800;font-size:19px;color:var(--mint-deep);background:var(--mint-soft);border:1.5px solid #c6ebdc;border-radius:50%}
.skill h3{font-family:var(--font-head);font-weight:800;font-size:17.5px;margin-bottom:6px}
.skill p{font-size:15.5px;line-height:1.7;color:var(--ink-soft)}
.skill p strong{color:var(--ink)}
.hotline{display:inline-block;background:var(--pink);color:#fff !important;padding:1px 10px;border-radius:8px;font-weight:700}

/* ---------- Rules checklist ---------- */
.rules-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-bottom:34px}
.rule{display:flex;gap:14px;align-items:flex-start;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow-sm)}
.rule-status{font-size:24px;line-height:1.3}
.rule h3{font-family:var(--font-head);font-weight:800;font-size:16px;margin-bottom:4px}
.rule p{font-size:14.5px;color:var(--ink-soft)}

/* ---------- Tips ---------- */
.tips{background:var(--lav-soft);border:1px solid #e4d7f6;border-radius:var(--radius);padding:26px 28px}
.tips h3{font-family:var(--font-head);font-weight:800;font-size:18px;margin-bottom:14px;color:var(--lav-deep)}
.tips ul{list-style:none;display:flex;flex-direction:column;gap:10px}
.tips li{position:relative;padding-left:26px;font-size:15.5px;color:var(--ink-soft);line-height:1.65}
.tips li::before{content:'▸';position:absolute;left:6px;color:var(--lav);font-weight:700}
.tips li strong{color:var(--ink)}

/* ---------- Thư viện preview ---------- */
.lib-preview{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px;margin:26px 0}
.lib-card{
  display:block;text-decoration:none;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s;position:relative;overflow:hidden;
}
.lib-card::before{content:'📄';position:absolute;right:12px;top:10px;font-size:22px;opacity:.35}
.lib-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.lib-card h3{font-family:var(--font-head);font-weight:700;font-size:15.5px;color:var(--ink);margin-bottom:6px;padding-right:26px;line-height:1.4}
.lib-card .lib-date{font-family:var(--font-head);font-size:12px;color:var(--muted)}
.lib-loading{grid-column:1/-1;text-align:center;color:var(--muted);font-style:italic;padding:26px}
.lib-actions{text-align:center;margin-top:8px}

/* ---------- Footer ---------- */
.footer{margin-top:70px;background:linear-gradient(180deg,#a77cc0,#7e5aa0);color:#fdeef6;padding:56px 24px 46px;text-align:center;position:relative;z-index:1}
.footer-inner{max-width:760px;margin:0 auto}
.footer-logo{margin:0 auto 14px;border-radius:50%;border:3px solid #ffd6ea;box-shadow:0 0 26px rgba(255,214,234,.55);animation:mascotFloat 4.2s ease-in-out infinite}
.footer-title{font-family:var(--font-head);font-weight:800;font-size:20px;color:#fff;margin-bottom:12px}
.footer p{font-size:14.5px;line-height:1.8;margin-bottom:8px}
.footer-note{color:#e8cfe0;font-size:13px !important}
.footer-hotline{margin-top:18px !important;display:inline-block;font-family:var(--font-head);font-weight:700;color:#fff !important;background:rgba(242,123,171,.35);border:1px solid rgba(255,214,234,.65);padding:10px 22px;border-radius:999px}

/* ---------- Chat FAB ---------- */
.chat-fab{
  position:fixed;right:22px;bottom:22px;z-index:1300;
  width:66px;height:66px;border-radius:50%;border:3px solid #fff;cursor:pointer;
  box-shadow:0 10px 30px rgba(242,123,171,.5);background:var(--pink-soft);
  transition:transform .25s;overflow:visible;padding:0;
}
.chat-fab:hover{transform:scale(1.09) rotate(-4deg)}
.chat-fab img{border-radius:50%;width:100%;height:100%}
.chat-fab-pulse{position:absolute;inset:-4px;border-radius:50%;border:2.5px solid var(--pink);animation:pulseRing 2s ease-out infinite}
@keyframes pulseRing{0%{transform:scale(.9);opacity:.9}100%{transform:scale(1.35);opacity:0}}

/* ---------- Chat panel ---------- */
.chat-panel{
  position:fixed;right:16px;bottom:96px;z-index:1300;
  width:min(350px,calc(100vw - 24px));height:min(520px,calc(100vh - 126px));
  background:var(--pearl);border-radius:20px;border:1px solid var(--line);
  box-shadow:0 30px 80px -12px rgba(140,60,100,.45);
  display:flex;flex-direction:column;overflow:hidden;
  overscroll-behavior:contain;
  animation:panelUp .35s cubic-bezier(.34,1.4,.64,1) both;
}
@keyframes panelUp{from{opacity:0;transform:translateY(24px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}
.chat-head{display:flex;align-items:center;gap:10px;padding:12px 14px;background:linear-gradient(145deg,var(--pink),var(--pink-deep));color:#fff}
.chat-head img{border-radius:50%;border:2px solid rgba(255,255,255,.7)}
.chat-head-info{flex:1;line-height:1.3}
.chat-head-info strong{font-family:var(--font-head);font-size:15px;display:block}
.chat-head-info span{font-size:11.5px;opacity:.85}
.chat-close{background:rgba(255,255,255,.18);border:none;color:#fff;width:30px;height:30px;border-radius:50%;cursor:pointer;font-size:14px;transition:background .2s}
.chat-close:hover{background:rgba(255,255,255,.32)}

.chat-msgs{flex:1;overflow-y:auto;padding:16px 14px;display:flex;flex-direction:column;gap:10px;scrollbar-width:thin}
.msg{max-width:86%;padding:10px 14px;border-radius:16px;font-size:14.5px;line-height:1.6;white-space:pre-wrap;word-wrap:break-word;animation:msgIn .3s ease both}
@keyframes msgIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.msg.bot{align-self:flex-start;background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.user{align-self:flex-end;background:linear-gradient(145deg,var(--pink),var(--pink-deep));color:#fff;border-bottom-right-radius:4px}
.msg.bot a{color:var(--pink-deep);font-weight:700}
.msg.typing{color:var(--muted);font-style:italic}
.msg .save-note{display:block;margin-top:8px;font-family:var(--font-head);font-size:12.5px;color:var(--mint-deep);background:var(--mint-soft);border-radius:10px;padding:6px 10px}
.msg img.msg-img{margin-top:8px;border-radius:14px;max-width:100%;border:3px solid var(--pink-soft);box-shadow:var(--shadow-sm)}
.msg .img-loading{display:flex;align-items:center;gap:8px;margin-top:8px;font-family:var(--font-head);font-size:12.5px;color:var(--lav-deep);background:var(--lav-soft);border-radius:10px;padding:8px 12px}
.msg .img-loading .spin{width:14px;height:14px;border-radius:50%;border:2.5px solid #d8c8f2;border-top-color:var(--lav-deep);animation:spinIt .8s linear infinite;flex-shrink:0}
@keyframes spinIt{to{transform:rotate(360deg)}}
.msg .img-dl{display:inline-block;margin-top:6px;font-family:var(--font-head);font-size:12.5px;font-weight:700}

.chat-chips{display:flex;gap:6px;padding:8px 12px 2px;flex-wrap:wrap}
.chat-chips button{
  font-family:var(--font-head);font-size:11.5px;font-weight:700;color:var(--lav-deep);
  background:var(--lav-soft);border:1px solid #e4d7f6;border-radius:999px;
  padding:5px 10px;cursor:pointer;transition:background .2s,transform .2s;
}
.chat-chips button:hover{background:#e9ddf8;transform:translateY(-1px)}

.chat-file-zone{display:flex;align-items:center;gap:8px;margin:6px 12px 0;padding:7px 10px;background:var(--mint-soft);border:1px dashed #c6ebdc;border-radius:10px}
.file-chip{font-family:var(--font-head);font-size:12px;color:var(--mint-deep);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chat-file-zone button{border:none;background:none;cursor:pointer;color:var(--muted);font-size:13px}

.chat-input{display:flex;gap:8px;padding:10px 12px 12px;align-items:center}
.chat-upload,.chat-art{
  width:38px;height:38px;flex-shrink:0;display:grid;place-items:center;
  background:var(--pink-soft);border:1px solid var(--pink-mist);border-radius:50%;
  cursor:pointer;font-size:16px;transition:transform .2s;
}
.chat-art{background:var(--lav-soft);border-color:#e4d7f6}
.chat-art.on{background:linear-gradient(145deg,var(--lav),var(--lav-deep));border-color:transparent;box-shadow:0 4px 12px rgba(167,139,220,.5)}
.chat-upload:hover,.chat-art:hover{transform:scale(1.08)}
.chat-input input[type=text]{
  flex:1;height:40px;border:1.5px solid var(--line);border-radius:999px;
  padding:0 16px;font-family:var(--font-body);font-size:14.5px;background:#fff;outline:none;
  transition:border-color .2s;
}
.chat-input input[type=text]:focus{border-color:var(--pink)}
.chat-input button[type=submit]{
  width:40px;height:40px;flex-shrink:0;border:none;border-radius:50%;cursor:pointer;
  background:linear-gradient(145deg,var(--pink),var(--pink-deep));color:#fff;font-size:16px;
  box-shadow:0 4px 12px rgba(242,123,171,.45);transition:transform .2s;
}
.chat-input button[type=submit]:hover{transform:scale(1.08)}
.chat-input button[type=submit]:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* ---------- Confetti ---------- */
.confetti-holder{position:fixed;inset:0;pointer-events:none;z-index:1400;overflow:hidden}
.confetti{position:absolute;font-size:16px;animation:confettiFall linear forwards}
@keyframes confettiFall{to{transform:translateY(105vh) rotate(660deg);opacity:.9}}

/* ---------- Trang thư viện / xem bài ---------- */
.page-hero{
  padding:110px clamp(16px,4vw,40px) 34px;text-align:center;position:relative;z-index:1;
  background:radial-gradient(900px 380px at 85% -10%,rgba(242,123,171,.18),transparent 60%),var(--pearl);
}
.page-hero h1{font-family:var(--font-head);font-weight:800;font-size:clamp(26px,4vw,42px);margin-top:10px}
.page-hero p{color:var(--ink-soft);margin-top:10px;font-style:italic}
.page-mascot{width:110px;height:110px;border-radius:50%;border:3px solid var(--pink);box-shadow:var(--shadow-md);margin:0 auto;animation:mascotFloat 4.2s ease-in-out infinite}
.lib-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;padding-bottom:60px}
.article-wrap{max-width:820px;margin:0 auto;padding:0 clamp(16px,4vw,40px) 70px;position:relative;z-index:1}
.article-card{background:var(--paper);border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow-md);padding:clamp(22px,4vw,44px)}
.article-card h1,.article-card h2,.article-card h3{font-family:var(--font-head);line-height:1.35;margin:1.1em 0 .5em}
.article-card h1{font-size:clamp(23px,3.4vw,32px);color:var(--pink-deep)}
.article-card h2{font-size:clamp(19px,2.6vw,25px)}
.article-card h3{font-size:18px}
.article-card p{margin-bottom:16px;color:var(--ink-soft)}
.article-card ul,.article-card ol{margin:0 0 16px 26px;color:var(--ink-soft)}
.article-card li{margin-bottom:6px}
.article-card blockquote{border-left:4px solid var(--lav);background:var(--lav-soft);padding:12px 18px;border-radius:0 12px 12px 0;margin-bottom:16px;font-style:italic}
.article-card img{border-radius:16px;margin:6px auto 16px;border:4px solid var(--pink-soft);box-shadow:var(--shadow-md);max-width:100%}
.article-actions{display:flex;gap:10px;justify-content:center;margin:26px 0 40px;flex-wrap:wrap}
.btn-edit{font-family:var(--font-head);font-weight:700;font-size:14px;text-decoration:none;background:var(--paper);color:var(--mint-deep);border:1.5px solid var(--mint);padding:10px 22px;border-radius:999px;cursor:pointer;transition:transform .2s}
.btn-edit:hover{transform:translateY(-2px)}
.btn-del{border-color:var(--pink);color:var(--pink-deep)}
.btn-ai{border-color:var(--lav);color:var(--lav-deep);background:var(--lav-soft)}
#editArea{width:100%;min-height:46vh;font-family:var(--font-head);font-size:14px;line-height:1.6;border:1.5px solid var(--pink);border-radius:14px;padding:16px;outline:none;background:#fffdfe;resize:vertical}
.empty-state{text-align:center;padding:60px 20px;color:var(--muted)}
.empty-state img{width:120px;height:120px;border-radius:50%;border:3px solid var(--pink);margin:0 auto 18px;animation:mascotFloat 4.2s ease-in-out infinite}

/* ---------- Reveal animation ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s ease,transform .7s ease}
.reveal.visible{opacity:1;transform:translateY(0)}
.tilt-l.reveal{transform:rotate(-1.1deg) translateY(26px)}
.tilt-r.reveal{transform:rotate(1.1deg) translateY(26px)}
.tilt-l.reveal.visible{transform:rotate(-1.1deg) translateY(0)}
.tilt-r.reveal.visible{transform:rotate(1.1deg) translateY(0)}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
  .deco,.mascot-ring,.mascot-ring::before,.mascot-ring::after,.mascot-bubble,.brand-logo,.chat-fab-pulse,.footer-logo,.page-mascot,.hero-badge,.empty-state img{animation:none !important}
}

/* ---------- Responsive ---------- */
@media (max-width:880px){
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-mascot{order:-1;margin-top:10px}
  .mascot-ring{width:min(230px,60vw)}
  .figure-duo,.law-grid,.rules-grid{grid-template-columns:1fr}
  .tilt-l,.tilt-r{transform:none}
  .tilt-l.reveal,.tilt-r.reveal{transform:translateY(26px)}
  .tilt-l.reveal.visible,.tilt-r.reveal.visible{transform:translateY(0)}
  .section{padding:60px 0 24px}
  .section-alt{margin:30px calc(50% - 50vw);padding:60px calc(50vw - 50%) 46px}
  .mascot-bubble{top:-38px;right:0;max-width:180px}
}
@media (max-width:640px){
  body{font-size:16px}
  .brand-text{display:none}
  .quote-row{grid-template-columns:1fr}
  .section-head{gap:14px}
  .section-num{width:48px;height:48px;font-size:22px;border-radius:14px}
  .formula{flex-direction:column;gap:10px;padding:24px 18px}
  .f-dash{display:none}
  .skill{padding:18px 16px}
  .hero{padding-top:96px}
  .chat-panel{right:8px;bottom:84px;height:min(500px,calc(100vh - 108px))}
  .chat-fab{right:14px;bottom:14px;width:60px;height:60px}
}

/* ============================================================
   BẢN V3 — Chế độ của bé + Máy ảnh + Album + Thư mục
   ============================================================ */

/* ---------- Nút đăng nhập trên nav ---------- */
.nav-auth{
  font-family:var(--font-head);font-weight:700;font-size:13.5px;
  color:#fff;background:linear-gradient(135deg,var(--lav),var(--lav-deep));
  border:none;border-radius:999px;padding:9px 16px;cursor:pointer;
  box-shadow:var(--shadow-sm);transition:transform .15s ease,box-shadow .15s ease;
  white-space:nowrap;
}
.nav-auth:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.nav-auth.on{background:linear-gradient(135deg,var(--mint),var(--mint-deep))}

/* ---------- Hộp thoại đăng nhập ---------- */
.auth-overlay{
  position:fixed;inset:0;z-index:1200;display:flex;align-items:center;justify-content:center;
  background:rgba(80,45,65,.5);backdrop-filter:blur(6px);padding:20px;
}
.auth-card{
  position:relative;width:min(400px,100%);background:var(--paper);
  border-radius:24px;padding:34px 30px 26px;text-align:center;
  box-shadow:var(--shadow-lg);border:2px solid var(--pink-mist);
  animation:popIn .28s cubic-bezier(.2,1.4,.4,1);
}
@keyframes popIn{from{transform:scale(.85) translateY(14px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}
.auth-logo{margin:0 auto 10px;border-radius:50%;border:3px solid var(--pink-soft)}
.auth-card h3{font-family:var(--font-head);font-size:21px;color:var(--ink);margin-bottom:6px}
.auth-hint{font-size:14px;color:var(--muted);margin-bottom:16px;line-height:1.5}
.auth-card input[type=password]{
  width:100%;font-family:var(--font-head);font-size:15px;padding:13px 16px;
  border:2px solid var(--line);border-radius:14px;outline:none;text-align:center;
  transition:border-color .15s ease;
}
.auth-card input[type=password]:focus{border-color:var(--pink)}
.auth-error{min-height:20px;font-size:13.5px;color:var(--pink-deep);font-family:var(--font-head);margin:8px 0 4px}
.auth-submit{
  width:100%;font-family:var(--font-head);font-weight:800;font-size:15.5px;color:#fff;
  background:linear-gradient(135deg,var(--pink),var(--pink-deep));border:none;border-radius:14px;
  padding:13px;cursor:pointer;transition:transform .15s ease,filter .15s ease;
}
.auth-submit:hover{transform:translateY(-2px);filter:brightness(1.05)}
.auth-submit:disabled{opacity:.6;cursor:wait}
.auth-note{font-size:12px;color:var(--muted);margin-top:12px}
.auth-close{
  position:absolute;top:12px;right:12px;width:34px;height:34px;border-radius:50%;
  border:none;background:var(--blush);color:var(--ink-soft);font-size:15px;cursor:pointer;
}
.auth-close:hover{background:var(--pink-soft)}

/* ---------- Trang album ---------- */
.album-main{padding-bottom:70px}
.hint-line{font-size:14px;color:var(--muted);font-family:var(--font-head);margin-bottom:12px}
.cam-section{
  display:grid;grid-template-columns:1.2fr .8fr;gap:26px;align-items:start;margin-bottom:44px;
}
.cam-panel,.cam-form{
  background:var(--paper);border:2px solid var(--pink-mist);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
}
.cam-panel h2,.draft-section h2,.web-gallery h2{
  font-family:var(--font-head);font-size:22px;color:var(--ink);margin-bottom:4px;
}
.cam-stage{
  position:relative;border-radius:16px;overflow:hidden;background:#f3e3ee;
  aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;margin:14px 0;
}
.cam-stage video,.cam-stage canvas{width:100%;height:100%;object-fit:cover;display:block}
.cam-empty{
  display:flex;flex-direction:column;align-items:center;gap:10px;color:#bd93ab;
  font-family:var(--font-head);font-size:14.5px;padding:24px;text-align:center;
}
.cam-emoji{font-size:54px;animation:bob 2.6s ease-in-out infinite}
@keyframes bob{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.cam-flash{position:absolute;inset:0;background:#fff;opacity:0;pointer-events:none}
.cam-flash.go{animation:flashGo .5s ease-out}
@keyframes flashGo{0%{opacity:.95}100%{opacity:0}}
.cam-controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.btn-ghost-2{
  font-family:var(--font-head);font-weight:700;font-size:14px;color:var(--ink-soft);
  background:var(--blush);border:2px solid var(--line);border-radius:999px;
  padding:10px 18px;cursor:pointer;transition:transform .15s ease,background .15s ease;
}
.btn-ghost-2:hover{transform:translateY(-2px);background:var(--pink-soft)}
.btn-main.shot{background:linear-gradient(135deg,var(--lav),var(--lav-deep))}
.cam-fallback{margin-top:12px;text-align:center}
.linklike{
  background:none;border:none;color:var(--lav-deep);font-family:var(--font-head);
  font-size:13.5px;cursor:pointer;text-decoration:underline dotted;padding:4px;
}
.linklike:hover{color:var(--lav)}
.cam-form h3{font-family:var(--font-head);font-size:18px;margin-bottom:12px}
.shot-preview{
  width:100%;border-radius:14px;border:2px solid var(--pink-mist);margin-bottom:14px;
  transform:rotate(-1deg);box-shadow:var(--shadow-md);
}
.cam-form label{display:block;font-family:var(--font-head);font-size:13px;font-weight:700;color:var(--ink-soft);margin:10px 0 5px}
.cam-form select,.cam-form input[type=text]{
  width:100%;font-family:var(--font-head);font-size:14.5px;padding:11px 13px;
  border:2px solid var(--line);border-radius:12px;outline:none;background:#fff;
}
.cam-form select:focus,.cam-form input[type=text]:focus{border-color:var(--pink)}
.vis-row{
  display:flex!important;align-items:center;gap:9px;margin-top:14px!important;
  font-size:14px!important;color:var(--ink)!important;cursor:pointer;font-weight:600!important;
}
.vis-row input{width:18px;height:18px;accent-color:var(--pink)}
.cam-actions{display:flex;gap:10px;margin-top:16px;flex-wrap:wrap}
.cam-note{font-size:13px;color:var(--mint-deep);font-family:var(--font-head);margin-top:12px;min-height:18px}

/* ---------- Hàng chờ tải lên nhiều file (v5) ---------- */
.upload-zone{
  border:2.5px dashed var(--pink);border-radius:18px;background:var(--pink-soft);
  padding:26px 20px;text-align:center;cursor:pointer;transition:background .2s,transform .2s;
  margin-bottom:16px;
}
.upload-zone:hover,.upload-zone.drag{background:var(--pink-mist);transform:translateY(-2px)}
.upload-zone .uz-icon{font-size:42px;line-height:1;display:block;margin-bottom:8px}
.upload-zone .uz-title{font-family:var(--font-head);font-weight:800;font-size:17px;color:var(--pink-deep)}
.upload-zone .uz-sub{font-size:13.5px;color:var(--ink-soft);margin-top:4px}
.upload-queue{display:flex;flex-direction:column;gap:10px;margin:10px 0 4px}
.queue-item{
  display:flex;align-items:center;gap:12px;background:var(--blush);
  border:1px solid var(--line);border-radius:14px;padding:10px 12px;
}
.queue-thumb{width:52px;height:52px;border-radius:10px;overflow:hidden;flex-shrink:0;background:var(--pink-soft);display:grid;place-items:center;font-size:24px}
.queue-thumb img,.queue-thumb video{width:100%;height:100%;object-fit:cover}
.queue-info{flex:1;min-width:0}
.queue-name{font-family:var(--font-head);font-size:13px;font-weight:700;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.queue-status{font-size:12px;color:var(--muted);font-family:var(--font-head)}
.queue-status.done{color:var(--mint-deep);font-weight:700}
.queue-status.err{color:var(--pink-deep);font-weight:700}
.queue-x{border:none;background:var(--paper);width:28px;height:28px;border-radius:50%;cursor:pointer;color:var(--muted);flex-shrink:0}
.queue-x:hover{background:var(--pink-soft)}

/* ---------- Lưới album (kiểu polaroid) ---------- */
.draft-section{margin-bottom:44px}
.web-gallery{margin-bottom:20px}
.album-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:20px;margin-top:14px;
}
.album-card{
  background:#fff;border-radius:14px;padding:10px 10px 12px;
  box-shadow:var(--shadow-md);border:1px solid var(--line);
  transform:rotate(-1.2deg);transition:transform .2s ease,box-shadow .2s ease;
  animation:popIn .3s ease both;
}
.album-card:nth-child(2n){transform:rotate(1.1deg)}
.album-card:hover{transform:rotate(0) translateY(-6px) scale(1.02);box-shadow:var(--shadow-lg);z-index:2}
.album-card.private{background:#fffdf8;border-color:var(--lav)}
.album-thumb{position:relative;border-radius:10px;overflow:hidden;aspect-ratio:1/1;background:var(--pink-soft)}
.album-thumb img{width:100%;height:100%;object-fit:cover}
.album-thumb video{width:100%;height:100%;object-fit:cover;display:block;background:#2a1f2a}
.shot-preview video{max-width:100%;border-radius:14px}
.pdf-thumb{
  width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:8px;font-size:44px;color:var(--pink-deep);font-family:var(--font-head);text-decoration:none;
}
.pdf-thumb span{font-size:13px;color:var(--ink-soft)}
.priv-flag{
  position:absolute;top:8px;right:8px;background:rgba(167,139,220,.95);color:#fff;
  font-family:var(--font-head);font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;
}
.album-info{padding:9px 4px 2px}
.album-badge{
  display:inline-block;font-family:var(--font-head);font-size:11.5px;font-weight:700;
  color:var(--mint-deep);background:var(--mint-soft);border-radius:999px;padding:3px 10px;
}
.album-caption{
  font-family:var(--font-head);font-size:14px;font-weight:600;color:var(--ink);
  margin:6px 0 2px;overflow-wrap:anywhere;
}
.album-date{font-size:12px;color:var(--muted);font-family:var(--font-head)}
.album-tools{display:flex;gap:8px;padding:8px 4px 0;border-top:1px dashed var(--line);margin-top:8px}
.album-tools button{
  flex:1;font-family:var(--font-head);font-size:12.5px;font-weight:700;cursor:pointer;
  border:2px solid var(--line);background:#fff;border-radius:10px;padding:7px 4px;
  transition:background .15s ease,transform .15s ease;
}
.album-tools button:hover{background:var(--pink-soft);transform:translateY(-2px)}
.count{font-size:14px;color:var(--muted)}

/* ---------- Bộ lọc album / thư mục ---------- */
.album-filters,.lib-folders{display:flex;gap:9px;flex-wrap:wrap;margin:12px 0 6px}
.chip-btn{
  font-family:var(--font-head);font-size:13.5px;font-weight:700;color:var(--ink-soft);
  background:#fff;border:2px solid var(--line);border-radius:999px;padding:8px 16px;cursor:pointer;
  transition:all .15s ease;
}
.chip-btn:hover{border-color:var(--pink);color:var(--pink-deep)}
.chip-btn.on{background:linear-gradient(135deg,var(--pink),var(--pink-deep));color:#fff;border-color:transparent}

/* ---------- Thanh công cụ + trình soạn thảo thư viện ---------- */
.lib-adminbar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:16px 0 8px}
.lib-adminnote{font-size:13.5px;color:var(--muted);font-family:var(--font-head)}
.editor-card{
  background:var(--paper);border:2px solid var(--pink);border-radius:var(--radius);
  padding:22px;margin:14px 0 26px;box-shadow:var(--shadow-md);
}
.editor-card h3{font-family:var(--font-head);font-size:18px;margin-bottom:8px}
.editor-card label{display:block;font-family:var(--font-head);font-size:13px;font-weight:700;color:var(--ink-soft);margin:10px 0 5px}
.editor-card input,.editor-card textarea,.editor-card select{
  width:100%;font-family:var(--font-head);font-size:14.5px;padding:11px 13px;
  border:2px solid var(--line);border-radius:12px;outline:none;
}
.editor-card textarea{min-height:220px;font-family:ui-monospace,'Sarasa Mono SC',monospace;font-size:13px;line-height:1.6}
.editor-card input:focus,.editor-card textarea:focus,.editor-card select:focus{border-color:var(--pink)}
.editor-actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap;align-items:center}
.rewrite-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}
.rewrite-row select{width:auto;min-width:170px}
.rewrite-note{font-size:12.5px;color:var(--lav-deep);font-family:var(--font-head);min-height:16px;margin-top:6px}

/* ---------- Thẻ bài viết có công cụ của bé ---------- */
.lib-card{position:relative}
.lib-card-main{display:block;color:inherit;text-decoration:none}
.folder-badge{
  display:inline-block;font-family:var(--font-head);font-size:11.5px;font-weight:700;
  color:var(--lav-deep);background:var(--lav-soft);border-radius:999px;padding:3px 10px;margin:6px 0 2px;
}
.lib-tools{display:flex;gap:8px;padding:8px 14px 14px}
.lib-tools button{
  flex:1;font-family:var(--font-head);font-size:13px;font-weight:700;cursor:pointer;
  border:2px solid var(--line);background:#fff;border-radius:10px;padding:8px;
  transition:background .15s ease,transform .15s ease;
}
.lib-tools button:hover{background:var(--pink-soft);transform:translateY(-2px)}

/* ---------- trạng thái đăng nhập ---------- */
body.is-admin .chat-fab::after{content:''}

/* ============================================================
   BẢN V5 — GOC CHƠI GAME (hồng pastel)
   ============================================================ */
.games-main{padding-bottom:70px}
.game-picker{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:20px 0 30px}
.game-card{
  background:var(--paper);border:2px solid var(--line);border-radius:22px;
  padding:22px 18px;text-align:center;cursor:pointer;border:none;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s,border-color .25s;
  font-family:var(--font-head);
}
.game-card:hover{transform:translateY(-6px) scale(1.02);box-shadow:var(--shadow-md);border-color:var(--pink)}
.game-card.on{border-color:var(--pink);background:var(--pink-soft);box-shadow:var(--shadow-md)}
.game-card .gc-icon{font-size:44px;display:block;margin-bottom:8px}
.game-card .gc-name{font-weight:800;font-size:16.5px;color:var(--ink)}
.game-card .gc-sub{font-size:12.5px;color:var(--muted);margin-top:4px;font-weight:600}
.game-stage{
  background:var(--paper);border:2px solid var(--pink-mist);border-radius:24px;
  padding:22px;box-shadow:var(--shadow-md);margin-bottom:30px;
}
.game-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.game-title{font-family:var(--font-head);font-weight:800;font-size:21px;color:var(--pink-deep)}
.game-hud{display:flex;gap:8px;flex-wrap:wrap}
.hud-chip{
  font-family:var(--font-head);font-weight:800;font-size:13.5px;color:var(--ink-soft);
  background:var(--blush);border:1.5px solid var(--line);border-radius:999px;padding:6px 14px;
}
.hud-chip b{color:var(--pink-deep)}
.game-hint{font-size:14px;color:var(--muted);font-family:var(--font-head);margin-bottom:14px}
.game-msg{
  font-family:var(--font-head);font-weight:700;font-size:15.5px;color:var(--mint-deep);
  min-height:22px;margin-top:14px;text-align:center;
}
.game-board-area{display:flex;flex-direction:column;align-items:center}

/* --- Lật thẻ đôi (Pikachu) --- */
.mem-board{
  display:grid;grid-template-columns:repeat(4,1fr);gap:12px;
  width:min(430px,100%);margin:0 auto;
}
.mem-card{
  position:relative;aspect-ratio:3/3.4;perspective:700px;cursor:pointer;
  border:none;background:none;padding:0;
}
.mem-inner{
  position:absolute;inset:0;transform-style:preserve-3d;
  transition:transform .45s cubic-bezier(.34,1.3,.64,1);
  border-radius:16px;
}
.mem-card.flipped .mem-inner,.mem-card.matched .mem-inner{transform:rotateY(180deg)}
.mem-face{
  position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;
  border-radius:16px;display:grid;place-items:center;font-size:34px;
  box-shadow:var(--shadow-sm);
}
.mem-front{background:linear-gradient(145deg,var(--pink),var(--pink-deep));color:#fff;font-size:26px}
.mem-back{background:#fff;border:2.5px solid var(--pink-mist);transform:rotateY(180deg)}
.mem-card.matched .mem-back{border-color:var(--mint);background:var(--mint-soft);animation:matchPop .45s cubic-bezier(.34,1.56,.64,1)}
.mem-card.matched{cursor:default}
@keyframes matchPop{0%{transform:scale(1)}50%{transform:scale(1.12)}100%{transform:scale(1)}}

/* --- Bắn bóng bay --- */
.balloon-wrap{position:relative;width:min(560px,100%);margin:0 auto}
#balloonCanvas{width:100%;border-radius:18px;border:3px solid var(--pink-mist);background:linear-gradient(180deg,#fdf0f7,#f3e6fb);display:block;touch-action:manipulation;cursor:crosshair}

/* --- Kim cương --- */
.gem-board{
  display:grid;grid-template-columns:repeat(8,1fr);gap:6px;
  width:min(440px,100%);margin:0 auto;background:linear-gradient(160deg,#fdf0f7,#f3e9fb);
  border:3px solid var(--pink-mist);border-radius:18px;padding:10px;
  user-select:none;-webkit-user-select:none;touch-action:manipulation;
}
.gem{
  aspect-ratio:1/1;border:none;border-radius:12px;background:#fff;cursor:pointer;
  font-size:clamp(18px,4.4vw,26px);display:grid;place-items:center;
  box-shadow:0 2px 6px rgba(217,79,142,.12);
  transition:transform .18s cubic-bezier(.34,1.56,.64,1),box-shadow .18s;
  padding:0;
}
.gem:hover{transform:scale(1.08)}
.gem.sel{transform:scale(1.14);box-shadow:0 0 0 3px var(--pink),0 4px 14px rgba(217,79,142,.35)}
.gem.hint{box-shadow:0 0 0 3px var(--lav)}
.gem.pop{animation:gemPop .3s ease both}
@keyframes gemPop{0%{transform:scale(1)}45%{transform:scale(1.25)}100%{transform:scale(0);opacity:0}}
.gem.fall{animation:gemFall .32s ease both}
@keyframes gemFall{from{transform:translateY(-16px) scale(.6);opacity:.2}to{transform:translateY(0) scale(1);opacity:1}}

@media (max-width:640px){
  .game-picker{grid-template-columns:1fr;gap:12px}
  .game-card{display:flex;align-items:center;gap:14px;text-align:left;padding:16px}
  .game-card .gc-icon{font-size:34px;margin:0}
}

/* ---------- mobile ---------- */
@media (max-width:880px){
  .cam-section{grid-template-columns:1fr}
  .album-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px}
  .nav-auth{padding:8px 12px;font-size:12.5px}
}

/* ============================================================
   V6 — ICON MASCOT NHÁY MẮT CHO MENU · LƯỚI MENU TRANG CHỦ ·
   CHAT BONG BÓNG MỚI (phân biệt người gửi, cuộn đúng)
   ============================================================ */

/* ---------- Icon mặt bé ---------- */
[data-m]{display:inline-grid;place-items:center;overflow:visible}
[data-m]>svg{width:100%;height:100%;display:block}
.tk-blink{transform-box:fill-box;transform-origin:center;animation:tkblink 4.8s ease-in-out infinite}
@keyframes tkblink{0%,92.5%,100%{transform:scaleY(1)}95.5%{transform:scaleY(.1)}}
.mi{width:27px;height:27px;flex-shrink:0;animation:miBob 3.4s ease-in-out infinite}
@keyframes miBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-1.8px)}}
.mi-lg{width:68px;height:68px}
.mi-xl{width:96px;height:96px}

/* ---------- Nav v2: link có icon mặt bé ---------- */
.nav-links a{display:inline-flex;align-items:center;gap:6px}
.nav-links a:hover .mi{animation-duration:1.6s}
.nav-links a.n-english{background:var(--lav-soft);color:var(--lav-deep);border:1px solid #e4d7f6}
.nav-links a.n-chores{background:var(--mint-soft);color:var(--mint-deep);border:1px solid #c9ede0}
.nav-links a.n-safe{background:#fff1e3;color:#c96a2e;border:1px solid #ffdcb8}
.nav-links a.n-body{background:var(--pink-soft);color:var(--pink-deep);border:1px solid var(--pink-mist)}
.nav-links a.n-family{background:#ffe9e6;color:#d45f6e;border:1px solid #ffd2cc}
.nav-links a.on-page{background:linear-gradient(145deg,var(--pink),var(--pink-deep));color:#fff;border:1px solid transparent}

/* ---------- Lưới menu trang chủ ---------- */
.footer-links a{color:#ffd6ea;text-decoration:none;font-weight:600;font-size:14px}
.footer-links a:hover{color:#fff;text-decoration:underline}
.map-sec{background:linear-gradient(165deg,#fff5f9,#fdf3ff)}
.map-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:14px;margin-top:26px}
.map-card{
  position:relative;background:#fff;border:1.5px solid var(--line);border-radius:20px;
  padding:20px 12px 16px;display:flex;flex-direction:column;align-items:center;gap:9px;
  text-decoration:none;box-shadow:var(--shadow-sm);overflow:hidden;text-align:center;
  transition:transform .25s cubic-bezier(.34,1.4,.64,1),box-shadow .25s;
}
.map-card::before{content:'';position:absolute;inset:0;background:var(--tone,#ffe3ef);opacity:.32;transition:opacity .25s}
.map-card>*{position:relative}
.map-card:hover{transform:translateY(-5px) rotate(-1.2deg);box-shadow:var(--shadow-md)}
.map-card:hover::before{opacity:.6}
.map-card .map-mi{width:66px;height:66px;margin-bottom:2px}
.map-name{font-family:var(--font-head);font-weight:800;font-size:15.5px;color:var(--ink)}
.map-desc{font-size:12.5px;color:var(--ink-soft);line-height:1.5}
.map-new{position:absolute;top:10px;right:10px;background:linear-gradient(145deg,var(--pink),var(--pink-deep));color:#fff;font-family:var(--font-head);font-size:10px;font-weight:800;padding:3px 8px;border-radius:999px;letter-spacing:.5px;box-shadow:0 3px 8px rgba(217,79,142,.4)}

/* ---------- Chat v2: bong bóng + avatar + tên người gửi ---------- */
.chat-msgs{
  overscroll-behavior:contain;-webkit-overflow-scrolling:touch;touch-action:pan-y;
  scroll-behavior:smooth;
}
.msg-row{display:flex;gap:8px;align-items:flex-end;animation:msgIn .3s ease both}
.msg-row.user{flex-direction:row-reverse}
.m-avatar{width:30px;height:30px;flex-shrink:0}
.m-avatar .mi{width:30px;height:30px;animation:none}
.m-col{display:flex;flex-direction:column;gap:3px;max-width:84%;min-width:0}
.msg-row.user .m-col{align-items:flex-end}
.m-name{font-family:var(--font-head);font-size:10.5px;font-weight:800;letter-spacing:.3px;color:var(--muted);padding:0 4px}
.msg-row.user .m-name{color:var(--pink-deep)}
.msg{max-width:100%;padding:10px 14px;border-radius:16px;font-size:14.5px;line-height:1.6;white-space:pre-wrap;word-wrap:break-word;overflow-wrap:anywhere}
.msg strong{font-weight:800}
.msg.typing{display:flex;align-items:center;gap:5px;padding:13px 16px;background:#fff;border:1px solid var(--line);border-radius:16px;border-bottom-left-radius:4px;color:var(--muted)}
.msg.typing .tdot{width:7px;height:7px;border-radius:50%;background:var(--pink);animation:tdot 1.1s ease-in-out infinite}
.msg.typing .tdot:nth-child(2){animation-delay:.15s;background:var(--lav)}
.msg.typing .tdot:nth-child(3){animation-delay:.3s;background:var(--mint)}
@keyframes tdot{0%,100%{transform:translateY(0);opacity:.45}50%{transform:translateY(-4px);opacity:1}}
.m-time{font-size:10px;color:var(--muted);padding:0 4px;opacity:.75}
.msg-chips{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px;padding:0 2px}
.msg-chips button{
  font-family:var(--font-head);font-size:11.5px;font-weight:700;color:var(--lav-deep);
  background:#fff;border:1.5px solid #e4d7f6;border-radius:999px;
  padding:5px 11px;cursor:pointer;transition:background .2s,transform .2s;
}
.msg-chips button:hover{background:var(--lav-soft);transform:translateY(-1px)}
/* Chặn tuyệt đối việc cuộn lan ra trang khi chat mở (iOS + Android + desktop):
   chat.js nhớ vị trí cuộn và đóng băng trang lại bằng position:fixed */
body.chat-open{position:fixed;left:0;right:0;width:100%;overflow:hidden}
@media (max-width:640px){
  .chat-panel{right:6px;left:6px;bottom:10px;width:auto;height:min(64dvh,520px);border-radius:18px}
  .m-col{max-width:88%}
}

/* ============================================================
   BẢN V7 — Riêng tư/công khai + Tạo bài từ link web
   ============================================================ */
.folder-badge.priv{background:#f3ecfd;color:#7a4fc9;border:1px dashed #d9c8f4;margin-right:6px}
.lib-tools .tool-vis{min-width:36px}
.lib-tools .tool-vis:hover{background:var(--mint-soft)}
.import-card{border:2px dashed #d9c8f4;background:linear-gradient(150deg,#fdfbff 0%,#f9f4ff 100%)}
.import-card h3{color:#7a4fc9}
.btn-import{box-shadow:0 6px 16px rgba(142,111,209,.35)}
/* HEIC thumb fallback dùng lại .pdf-thumb — ok */

/* ---------- V7: Rắn / Đập chuột / Chim / Bong bóng ---------- */
.dpad{display:grid;grid-template-columns:repeat(4,64px);gap:10px;justify-content:center;margin-top:14px}
.dpad button{
  width:64px;height:56px;font-size:22px;border:2px solid var(--pink-mist);border-radius:16px;
  background:#fff;cursor:pointer;box-shadow:0 4px 10px rgba(217,79,142,.14);transition:transform .15s;
}
.dpad button:active{transform:scale(.92);background:var(--pink-soft)}
.mole-board{
  display:grid;grid-template-columns:repeat(3,110px);gap:16px;justify-content:center;
  width:min(420px,100%);margin:0 auto;padding:22px;
  background:linear-gradient(160deg,#fdf0f7,#f3e9fb);border:3px solid var(--pink-mist);border-radius:20px;
}
.mole-hole{
  position:relative;aspect-ratio:1/1;border:none;border-radius:50%;cursor:pointer;padding:0;
  background:radial-gradient(circle at 50% 38%,#fff 0 62%,#f3d7e6 63% 100%);
  box-shadow:inset 0 -8px 14px rgba(217,79,142,.18),0 3px 8px rgba(217,79,142,.15);
  overflow:hidden;touch-action:manipulation;
}
.mole-hole .mole-emoji{
  position:absolute;left:50%;bottom:-8px;transform:translateX(-50%) translateY(110%);
  font-size:38px;transition:transform .18s ease-out;line-height:1;
}
.mole-hole.up .mole-emoji{transform:translateX(-50%) translateY(4px)}
.mole-hole.hit{background:radial-gradient(circle at 50% 38%,#d8f3e7 0 62%,#a9dcc4 63% 100%)}
.mole-hole.boom{animation:mlShake .3s}
@keyframes mlShake{0%,100%{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
@media (max-width:420px){.mole-board{grid-template-columns:repeat(3,92px);gap:12px}.dpad{grid-template-columns:repeat(4,58px)}.dpad button{width:58px;height:50px;font-size:19px}}

/* ============================================================
   V9 — AI BIẾN ẢNH/VIDEO THÀNH BÀI HỌC
   (nút 🪄 Phân tích · 🎨 Vẽ lại trên album + cửa sổ AI)
   ============================================================ */
.upload-zone .uz-label{
  display:inline-block;margin-top:14px;padding:11px 22px;border-radius:999px;
  background:linear-gradient(135deg,var(--pink),var(--pink-deep));color:#fff;
  font-family:var(--font-head);font-weight:800;font-size:15.5px;cursor:pointer;
  box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s;
}
.upload-zone .uz-label:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.ai-hint-line{
  background:linear-gradient(120deg,var(--pink-soft),var(--lav-soft));
  border:1.5px dashed var(--pink-mist);border-radius:14px;padding:10px 16px;
}
.ai-hint-line strong{color:var(--pink-deep)}
.album-tools .tool-ai,.album-tools .tool-ai-draw{
  background:linear-gradient(135deg,var(--pink-soft),#fff);
  border:1.5px solid var(--pink-mist);color:var(--pink-deep);
}
.album-tools .tool-ai:hover,.album-tools .tool-ai-draw:hover{
  background:linear-gradient(135deg,var(--pink),var(--pink-deep));color:#fff;
  border-color:transparent;transform:translateY(-1px);
}
.ai-modal{
  position:fixed;inset:0;z-index:1600;display:flex;align-items:center;justify-content:center;
  background:rgba(69,48,64,.42);backdrop-filter:blur(3px);padding:18px;
}
.ai-card{
  position:relative;width:min(640px,100%);max-height:min(84dvh,720px);overflow-y:auto;
  overscroll-behavior:contain;background:var(--paper);border-radius:24px;
  padding:26px 26px 20px;box-shadow:var(--shadow-lg);
  border:2px solid var(--pink-soft);animation:aiPop .28s cubic-bezier(.34,1.56,.64,1);
}
@keyframes aiPop{from{transform:scale(.86);opacity:0}to{transform:scale(1);opacity:1}}
.ai-card .ai-x{
  position:absolute;top:14px;right:14px;width:34px;height:34px;border-radius:50%;
  border:1.5px solid var(--line);background:#fff;color:var(--ink-soft);
  font-size:15px;cursor:pointer;transition:.18s;
}
.ai-card .ai-x:hover{background:var(--pink-soft);color:var(--pink-deep)}
.ai-title{font-family:var(--font-head);font-weight:800;font-size:19px;color:var(--pink-deep);margin:0 44px 12px 0;line-height:1.4}
.ai-msg{color:var(--ink-soft);font-size:15.5px;background:var(--blush);border-radius:14px;padding:14px 16px;line-height:1.7}
.ai-msg.err{background:#fdeaf3;color:#c2437b}
.ai-desc{
  font-size:15px;color:var(--ink);background:var(--blush);border:1.5px solid var(--pink-soft);
  border-radius:16px;padding:16px 18px;line-height:1.8;max-height:34dvh;overflow-y:auto;
  overscroll-behavior:contain;white-space:normal;
}
.ai-hint{font-size:13.5px;color:var(--muted);margin-top:10px}
.ai-note{
  width:100%;margin-top:8px;padding:12px 14px;border-radius:14px;
  border:1.5px solid var(--line);background:#fff;font-family:var(--font-body);
  font-size:15px;color:var(--ink);transition:border-color .18s;
}
.ai-note:focus{outline:none;border-color:var(--pink)}
.ai-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.ai-actions .btn-main,.ai-actions .btn-ghost-2{flex:1 1 auto;min-width:140px}
.ai-redraw-preview{
  display:block;width:100%;max-width:380px;margin:4px auto 0;border-radius:18px;
  border:2px solid var(--pink-soft);box-shadow:var(--shadow-sm);
}
body.ai-open{overflow:hidden}
@media (max-width:640px){
  .ai-card{padding:20px 16px 16px;border-radius:20px}
  .ai-actions .btn-main,.ai-actions .btn-ghost-2{min-width:100%}
}