/* guide.css – bảng "Cách dùng & kiểm tra trình duyệt" (js/guide.js), dùng chung app.html và index.html.
   Màu cố định kiểu Ocean Luxe tối (không phụ thuộc token của trang) nên giống nhau ở mọi nơi, sáng hay tối. Tiền tố gd-. */
.gd-ov{--gd-bg:#07182f;--gd-bg2:#0b2a52;--gd-card:rgba(255,255,255,.055);--gd-line:rgba(235,215,155,.24);--gd-gold:#ebd79b;--gd-amber:#f2b632;
  --gd-tx:#eaf2ff;--gd-mu:#a9bfdc;--gd-ok:#6ee7a0;--gd-warn:#fcd34d;--gd-bad:#ff9a9a;--gd-info:#7cc4ff;
  position:fixed;inset:0;z-index:2000;display:flex;align-items:center;justify-content:center;padding:max(14px,env(safe-area-inset-top)) max(14px,env(safe-area-inset-right)) max(14px,env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));
  background:radial-gradient(ellipse at 50% 20%,rgba(20,60,120,.55),rgba(2,8,20,.82));-webkit-backdrop-filter:blur(7px);backdrop-filter:blur(7px);animation:gd-fade .22s ease both}
.gd-ov[hidden]{display:none!important}
.gd-pn{position:relative;width:min(780px,100%);max-height:min(88vh,860px);max-height:min(88dvh,860px);display:flex;flex-direction:column;color:var(--gd-tx);font:15px/1.55 "Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:radial-gradient(120% 70% at 85% -10%,rgba(60,130,230,.28),transparent 60%),linear-gradient(160deg,var(--gd-bg2),var(--gd-bg) 62%);
  border:1px solid var(--gd-line);border-radius:26px;box-shadow:0 30px 80px rgba(0,0,0,.55),inset 0 1px 0 rgba(255,255,255,.08);overflow:hidden;animation:gd-rise .28s cubic-bezier(.2,.8,.2,1) both}
.gd-hd{display:flex;align-items:center;gap:12px;padding:18px 20px 12px}
.gd-hd h2{margin:0;flex:1;font:700 1.35rem/1.2 "Playfair Display",Georgia,serif;color:#fff;letter-spacing:.2px}
.gd-hd h2 small{display:block;margin-top:3px;font:500 .78rem/1.3 "Be Vietnam Pro",system-ui,sans-serif;color:var(--gd-gold);letter-spacing:.14em;text-transform:uppercase}
.gd-x{flex:none;width:44px;height:44px;border-radius:14px;border:1px solid var(--gd-line);background:var(--gd-card);color:#fff;font-size:1.1rem;cursor:pointer}
.gd-x:hover{background:rgba(255,255,255,.14)}
.gd-tabs{display:flex;gap:6px;padding:0 16px 12px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.gd-tabs::-webkit-scrollbar{display:none}
.gd-tabs button{flex:none;min-height:44px;padding:8px 16px;border-radius:999px;border:1px solid transparent;background:transparent;color:var(--gd-mu);font:600 .9rem "Be Vietnam Pro",system-ui,sans-serif;cursor:pointer;white-space:nowrap}
.gd-tabs button:hover{color:#fff;background:rgba(255,255,255,.08)}
.gd-tabs button[aria-selected="true"]{color:#3b2700;background:linear-gradient(180deg,#f8de9a,#e3b94c);box-shadow:0 6px 16px rgba(227,185,76,.28)}
.gd-tabs .gd-dot{display:inline-block;min-width:20px;height:20px;margin-left:6px;padding:0 6px;border-radius:999px;background:var(--gd-bad);color:#2a0606;font:800 .72rem/20px system-ui,sans-serif;text-align:center;vertical-align:1px}
.gd-tabs .gd-dot.w{background:var(--gd-warn);color:#3a2d00}
.gd-bd{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;padding:4px 20px 22px;-webkit-overflow-scrolling:touch}
.gd-bd>section[hidden]{display:none}
.gd-lead{margin:2px 0 14px;color:var(--gd-mu)}
.gd-lead b{color:#fff}
.gd-steps{list-style:none;margin:0;padding:0;display:grid;gap:10px;counter-reset:gd}
.gd-steps li{counter-increment:gd;position:relative;padding:14px 16px 14px 62px;border-radius:18px;background:var(--gd-card);border:1px solid rgba(255,255,255,.08)}
.gd-steps li::before{content:counter(gd);position:absolute;left:14px;top:14px;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font:800 .95rem system-ui,sans-serif;color:#3b2700;background:linear-gradient(180deg,#f8de9a,#e3b94c)}
.gd-steps h3,.gd-g h3{margin:0 0 3px;font:700 1rem/1.3 "Be Vietnam Pro",system-ui,sans-serif;color:#fff}
.gd-steps p{margin:0;color:var(--gd-mu);font-size:.92rem}
.gd-steps p b,.gd-g p b,.gd-ck p b,.gd-in p b{color:#fff;font-weight:600}
.gd-steps a,.gd-in a{color:var(--gd-gold)}
.gd-g{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:10px;margin:0 0 14px}
.gd-g>div{padding:14px 16px;border-radius:18px;background:var(--gd-card);border:1px solid rgba(255,255,255,.08)}
.gd-g .ic{display:inline-block;margin-right:8px;font-size:1.15rem;vertical-align:-2px}
.gd-g p{margin:0;color:var(--gd-mu);font-size:.92rem}
kbd,.gd-k{display:inline-block;min-width:1.7em;padding:1px 7px;border-radius:7px;border:1px solid rgba(255,255,255,.28);border-bottom-width:2px;background:rgba(255,255,255,.08);color:#fff;font:600 .82em/1.5 ui-monospace,SFMono-Regular,Menlo,monospace;text-align:center}
.gd-sum{display:flex;align-items:center;gap:14px;margin:0 0 14px;padding:14px 16px;border-radius:18px;border:1px solid var(--gd-line);background:linear-gradient(135deg,rgba(255,255,255,.08),rgba(255,255,255,.03))}
.gd-sum .big{flex:none;width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-size:1.4rem;background:rgba(255,255,255,.1)}
.gd-sum.ok .big{background:rgba(110,231,160,.18);box-shadow:0 0 0 2px rgba(110,231,160,.5)}
.gd-sum.warn .big{background:rgba(252,211,77,.16);box-shadow:0 0 0 2px rgba(252,211,77,.5)}
.gd-sum.bad .big{background:rgba(255,154,154,.16);box-shadow:0 0 0 2px rgba(255,154,154,.5)}
.gd-sum div:nth-child(2){flex:1;min-width:0}
.gd-sum b{display:block;color:#fff;font-size:1.02rem}
.gd-sum span{color:var(--gd-mu);font-size:.9rem}
.gd-btn{min-height:44px;padding:9px 16px;border-radius:12px;border:1px solid var(--gd-line);background:var(--gd-card);color:#fff;font:600 .88rem "Be Vietnam Pro",system-ui,sans-serif;cursor:pointer;touch-action:manipulation}
.gd-btn:hover{background:rgba(255,255,255,.14)}
.gd-btn:disabled{opacity:.55;cursor:default}
.gd-btn.pri{color:#3b2700;border-color:transparent;background:linear-gradient(180deg,#f8de9a,#e3b94c);box-shadow:0 6px 16px rgba(227,185,76,.26)}
.gd-btn.pri:hover{filter:brightness(1.06)}
.gd-ck{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.gd-ck li{display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:4px 12px;align-items:start;padding:12px 14px;border-radius:16px;background:var(--gd-card);border:1px solid rgba(255,255,255,.08)}
.gd-ck li.bad{border-color:rgba(255,154,154,.45);background:rgba(255,154,154,.07)}
.gd-ck li.warn{border-color:rgba(252,211,77,.4);background:rgba(252,211,77,.06)}
.gd-ck .st{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-size:1rem;font-weight:800;background:rgba(255,255,255,.1);color:var(--gd-info)}
.gd-ck .ok .st{background:rgba(110,231,160,.16);color:var(--gd-ok)}
.gd-ck .warn .st{background:rgba(252,211,77,.16);color:var(--gd-warn)}
.gd-ck .bad .st{background:rgba(255,154,154,.16);color:var(--gd-bad)}
.gd-ck h3{margin:0;font:700 .98rem/1.35 "Be Vietnam Pro",system-ui,sans-serif;color:#fff}
.gd-ck p{margin:2px 0 0;color:var(--gd-mu);font-size:.9rem}
.gd-ck p.fix{margin-top:6px;padding:8px 10px;border-radius:10px;background:rgba(0,0,0,.28);color:#dbe8fb;font-size:.88rem}
.gd-ck .act{align-self:center;grid-column:3;grid-row:1}
.gd-ck .act .gd-btn{padding:7px 12px;min-height:40px;font-size:.82rem}
.gd-in{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr));gap:10px;margin-top:12px}
.gd-in>div{padding:14px 16px;border-radius:18px;background:var(--gd-card);border:1px solid rgba(255,255,255,.08)}
.gd-in>div.me{border-color:var(--gd-gold);box-shadow:0 0 0 1px rgba(235,215,155,.4),0 10px 24px rgba(0,0,0,.25)}
.gd-in h3{margin:0 0 4px;font:700 .98rem "Be Vietnam Pro",system-ui,sans-serif;color:#fff}
.gd-in .me-tag{margin-left:8px;padding:1px 8px;border-radius:999px;background:var(--gd-gold);color:#3b2700;font:700 .68rem system-ui,sans-serif;letter-spacing:.06em;vertical-align:2px}
.gd-in p{margin:0;color:var(--gd-mu);font-size:.9rem}
.gd-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.gd-foot{margin:16px 0 0;color:var(--gd-mu);font-size:.82rem}

/* thanh cảnh báo "đang mở trong trình duyệt của ứng dụng" */
.gd-bar{position:fixed;left:max(10px,env(safe-area-inset-left));right:max(10px,env(safe-area-inset-right));bottom:max(10px,env(safe-area-inset-bottom));z-index:1500;display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;
  max-width:760px;margin:0 auto;padding:12px 14px;border-radius:18px;color:#eaf2ff;font:600 .88rem/1.45 "Be Vietnam Pro",system-ui,sans-serif;
  background:linear-gradient(135deg,#0b2a52,#07182f);border:1px solid rgba(235,215,155,.4);box-shadow:0 14px 40px rgba(0,0,0,.45);animation:gd-rise .3s ease both}
.gd-bar[hidden]{display:none}
.gd-bar p{margin:0;flex:1 1 240px;font-weight:500;color:#cfe0f7}
.gd-bar p b{color:#fff}
.gd-bar .gd-btn{min-height:40px;padding:7px 13px}
.gd-bar .gd-btn.x{padding:7px 11px;border-color:transparent;background:transparent;color:#a9bfdc}
/* lời nhắn lần đầu */
.gd-hint{bottom:max(14px,env(safe-area-inset-bottom));max-width:430px;margin:0 auto 0 max(14px,env(safe-area-inset-left))}
@media (max-width:640px){.gd-hint{margin:0 auto}}

@media (max-width:640px){
  .gd-ov{align-items:flex-end;padding:0}
  .gd-pn{width:100%;max-height:92vh;max-height:92dvh;border-radius:26px 26px 0 0;border-bottom:0;padding-bottom:env(safe-area-inset-bottom)}
  .gd-hd{padding:16px 14px 10px}.gd-bd{padding:4px 14px 18px}.gd-hd h2{font-size:1.18rem}
  .gd-sum{flex-wrap:wrap}.gd-sum div:nth-child(2){flex:1 1 calc(100% - 64px)}.gd-sum .gd-btn{width:100%}
  .gd-ck li{grid-template-columns:34px minmax(0,1fr)}.gd-ck .act{grid-column:2;grid-row:auto;margin-top:6px}
}
@keyframes gd-fade{from{opacity:0}}
@keyframes gd-rise{from{opacity:0;transform:translateY(18px) scale(.985)}}
@media (prefers-reduced-motion:reduce){.gd-ov,.gd-pn,.gd-bar{animation:none}}
html.gate-lock body>.gd-bar{display:flex!important}html.gate-lock body>.gd-hint{display:none!important}
@media print{.gd-ov,.gd-bar{display:none!important}}

/* nút ? ở thanh trên của app.html và index.html */
#btnGuide{width:32px;height:32px;padding:0!important;border-radius:50%!important;border:1.5px solid rgba(255,255,255,.6)!important;font:800 .95rem/1 system-ui,sans-serif!important;display:inline-grid;place-items:center;color:#fff;flex:none}
#btnGuide:hover{background:rgba(255,255,255,.2)!important}