/* KeyGate UI v7 — trang khách: cobalt + vàng chanh, thẻ vé. Admin: navy, thẻ phẳng, tab. */
:root{--cobalt:#2B3BFF;--ink:#0B1033;--lemon:#E8FF4D;--paper:#F6F7FF;
 --navy:#0F1530;--surf:#171F42;--surf2:#1F2954;--line:#2B3768;--text:#EEF1FF;--mut:#9AA6D6;
 --ok:#3DDC97;--bad:#FF6B7A;--warn:#FFC857;
 --f-body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--f-head:"Bricolage Grotesque","Be Vietnam Pro",system-ui,sans-serif;
 --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;font:16px/1.55 var(--f-body);-webkit-font-smoothing:antialiased}
body.pub{background:var(--cobalt);color:#fff}
body.adm{background:var(--navy);color:var(--text)}
a{color:inherit}
h1,h2,h3{margin:0;font-family:var(--f-head);font-weight:800;letter-spacing:-.015em;line-height:1.1}
p{margin:0}
.ico{width:1.15em;height:1.15em;flex:none;vertical-align:-.2em}
code{font-family:var(--mono);font-size:13px;word-break:break-all}
.muted{color:var(--mut)}.small{font-size:13px}
:focus-visible{outline:3px solid var(--lemon);outline-offset:2px;border-radius:6px}
body.pub :focus-visible{outline-color:#fff}

/* ───── Nút ───── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border:2px solid transparent;border-radius:12px;background:var(--lemon);color:var(--ink);font:700 16px/1.2 var(--f-body);text-decoration:none;cursor:pointer;transition:transform .15s,background .15s,border-color .15s}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:none}
.btn.lemon{background:var(--lemon);color:var(--ink)}
.btn.ghost{background:transparent;color:inherit;border-color:rgba(255,255,255,.35)}
body.adm .btn.ghost{border-color:var(--line);color:var(--text)}
.btn.ghost:hover{border-color:currentColor}
.btn.sm{padding:8px 12px;font-size:14px;border-radius:10px}
.btn.block{display:flex;width:100%}
.btn.off{background:rgba(11,16,51,.08);color:rgba(11,16,51,.5);cursor:not-allowed;transform:none}
form.busy .btn{opacity:.55;pointer-events:none}

/* ───── Trang khách: theme sáng, navy (gk-*) ───── */
body.pub{--navy-d:#1E3A8A;--blue:#2563EB;--tx:#0F172A;--tx2:#55637D;--bd:#DEE5F4;--okc:#15803D;--badc:#DC2626;--waitc:#B45309;
 background:linear-gradient(180deg,#D9E4FB 0,#EEF2FA 300px) #EEF2FA;color:var(--tx)}
body.pub :focus-visible{outline-color:var(--blue)}
.gk{max-width:480px;min-height:100vh;margin:0 auto;padding:max(16px,env(safe-area-inset-top)) 16px 28px;display:flex;flex-direction:column;gap:18px}
.gk-top{display:flex;align-items:center;gap:12px;padding:12px 14px;background:#fff;border:1px solid var(--bd);border-radius:18px;box-shadow:0 1px 2px rgba(15,23,42,.04)}
.gk-mark{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:13px;background:linear-gradient(135deg,var(--navy-d),var(--blue));color:#fff;text-decoration:none}
.gk-mark .ico{width:22px;height:22px}
.gk-top-text{display:flex;flex-direction:column;gap:3px;min-width:0}
.gk-name{font-weight:700;font-size:16px;line-height:1.2;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.gk-tag{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--navy-d)}
.gk-tag .ico{width:12px;height:12px}
.gk-hero{padding:6px 4px 0}
.gk-kicker{display:inline-flex;align-items:center;gap:7px;margin:0;padding:5px 12px;border-radius:999px;background:#E1E9FF;color:var(--navy-d);font-size:13px;font-weight:700}
.gk-kicker .ico{width:15px;height:15px}
.gk-kicker.is-ok{background:#DCFCE7;color:var(--okc)}
.gk-kicker.is-bad{background:#FEE2E2;color:var(--badc)}
.gk-kicker.is-wait{background:#FEF3C7;color:var(--waitc)}
.gk-title{display:flex;align-items:center;gap:10px;margin:14px 0 10px;font:800 30px/1.15 var(--f-body);letter-spacing:-.02em;color:var(--tx)}
.gk-title-ico{display:inline-grid;place-items:center;flex:none;width:34px;height:34px;border-radius:50%;background:#E1E9FF;color:var(--navy-d)}
.gk-title-ico .ico{width:20px;height:20px}
.gk-title-ico.is-ok{background:#DCFCE7;color:var(--okc)}
.gk-title-ico.is-bad{background:#FEE2E2;color:var(--badc)}
.gk-title-ico.is-wait{background:#FEF3C7;color:var(--waitc)}
.gk-lead{display:flex;gap:9px;margin:0;color:var(--tx2);font-size:15px;line-height:1.55}
.gk-lead .ico{width:18px;height:18px;margin-top:2px;color:var(--navy-d)}
.gk-panel{padding:20px;background:#fff;border:1px solid var(--bd);border-radius:22px;box-shadow:0 10px 30px rgba(30,58,138,.08)}
.gk-panel.is-center{text-align:center}
.gk-panel>*+*{margin-top:14px}
.gk-go{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:52px;padding:0 20px;border:0;border-radius:14px;background:linear-gradient(135deg,var(--navy-d),var(--blue));color:#fff;font:700 16px/1.2 var(--f-body);text-decoration:none;cursor:pointer;transition:filter .15s,transform .15s}
.gk-go:hover{filter:brightness(1.08)}
.gk-go:active{transform:scale(.99)}
.gk-go.ghost{background:#fff;color:var(--navy-d);border:1.5px solid #C5D2F0}
.gk-go.off{background:#E8ECF6;color:#8A97B2;cursor:not-allowed}
.gk-go.off:hover{filter:none}
.gk-warn{display:grid;place-items:center;width:68px;height:68px;margin:2px auto 6px;border-radius:50%;background:rgba(30,58,138,.1);color:var(--navy-d)}
.gk-warn .ico{width:32px;height:32px}
.gk-warn.is-bad{background:rgba(220,38,38,.1);color:var(--badc)}
.gk-warn.is-wait{background:rgba(180,83,9,.12);color:var(--waitc)}
.gk-steps{list-style:none;margin:0;padding:0}
.gk-steps li{position:relative;display:flex;gap:14px;padding-bottom:18px}
.gk-steps li:not(:last-child)::before{content:"";position:absolute;left:14px;top:32px;bottom:2px;width:2px;background:#DAE2F5}
.gk-steps .n{display:grid;place-items:center;flex:none;width:30px;height:30px;border-radius:50%;background:var(--navy-d);color:#fff;font-size:14px;font-weight:700}
.gk-steps b{display:block;font-size:15px}
.gk-steps span:not(.n){display:block;margin-top:1px;color:var(--tx2);font-size:14px}
.gk-opts{display:grid;gap:14px}
.gk-opt{padding:16px;border:1px solid var(--bd);border-radius:18px;background:#F8FAFF}
.gk-opt>*+*{margin-top:12px}
.gk-opt-head{display:flex;align-items:center;gap:12px}
.gk-opt-ico{display:grid;place-items:center;flex:none;width:48px;height:48px;border-radius:14px;background:#fff;border:1px solid var(--bd);color:var(--navy-d)}
.gk-opt-ico .ico{width:24px;height:24px}
.gk-opt h2{margin:0 0 5px;font:700 18px/1.2 var(--f-body);letter-spacing:-.01em}
.gk-opt p{margin:0;color:var(--tx2);font-size:14px}
.gk-state{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:999px;background:rgba(21,128,61,.12);color:var(--okc);font-size:12.5px;font-weight:700}
.gk-state::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.gk-state.off{background:#E8ECF6;color:#6B7A99}
.gk-for{display:flex;align-items:center;justify-content:center;gap:8px;margin:0;color:var(--navy-d);font-size:14px;font-weight:700}
.gk-key{padding:18px 14px;border:1.5px dashed #AFC0EC;border-radius:16px;background:#F3F6FF;text-align:center}
.gk-key code{display:block;overflow-wrap:anywhere;font:600 clamp(15px,4.4vw,22px)/1.45 "JetBrains Mono",var(--mono);color:var(--navy-d);letter-spacing:.01em;user-select:all}
.gk-note{margin:14px 0 0;color:var(--tx2);font-size:13px;line-height:1.5;text-align:center}
.gk-back{display:inline-flex;align-items:center;justify-content:center;gap:8px;color:var(--navy-d);font-size:14px;font-weight:600;text-decoration:none}
.gk-admin{margin:0;text-align:center;font-size:13px}
.gk-admin a{color:var(--tx2);text-underline-offset:3px}
.gk-foot{margin-top:auto;padding-top:14px;color:#7B88A6;font-size:12.5px;text-align:center}
body.pub .toast{background:var(--navy-d)}

/* ───── Admin: khung ───── */
body.adm h1{font-size:28px}
.bar{position:sticky;top:0;z-index:20;background:rgba(15,21,48,.94);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar-in{max-width:980px;margin:0 auto;padding:12px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.tabs-in{max-width:980px;margin:0 auto;padding:0 10px;display:flex;gap:2px;overflow-x:auto;scrollbar-width:none}
.tabs-in::-webkit-scrollbar{display:none}
.tab{flex:none;padding:11px 14px;color:var(--mut);font-size:15px;font-weight:600;text-decoration:none;border-bottom:3px solid transparent;white-space:nowrap}
.tab:hover{color:var(--text)}
.tab.active{color:#fff;border-bottom-color:var(--lemon)}
.main{max-width:980px;margin:0 auto;padding:22px 16px 72px;display:grid;gap:16px}
[data-tab]{display:grid;gap:16px;align-content:start}
.js [data-tab]:not(.active){display:none}
.page-title{font-size:30px}
.page-sub{margin-top:6px;color:var(--mut);max-width:44em}

/* ───── Admin: thẻ & thành phần ───── */
.card{background:var(--surf);border:1px solid var(--line);border-radius:16px;padding:18px}
.card h2{font-size:19px}
.card h3{font-size:18px}
.card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}
.sub{margin-top:4px;color:var(--mut);font-size:14px}
.grid{display:grid;gap:16px}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.stat{padding:16px;border-radius:14px;background:var(--surf);border:1px solid var(--line)}
.stat b{display:block;font:800 32px/1.1 var(--f-head);color:#fff}
.stat span{display:block;margin-top:6px;color:var(--mut);font-size:13px;line-height:1.35}
.ready{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:12px;font-weight:600}
.ready.yes{background:rgba(61,220,151,.14);color:#7CF0BD}
.ready.no{background:rgba(255,200,87,.14);color:#FFD98A}
.checks{list-style:none;margin:10px 0 0;padding:0}
.checks li{display:flex;align-items:center;gap:12px;padding:12px 0;border-top:1px solid var(--line)}
.checks li:first-child{border-top:0}
.ck{display:grid;place-items:center;flex:none;width:28px;height:28px;border-radius:50%}
.ck .ico{width:16px;height:16px}
.ck.yes{background:rgba(61,220,151,.18);color:var(--ok)}
.ck.no{background:rgba(255,200,87,.18);color:var(--warn)}
.checks .t{flex:1;min-width:0;display:flex;flex-direction:column}
.checks .t span{color:var(--mut);font-size:13px}
.checks a{color:var(--lemon);font-weight:600;text-underline-offset:3px}
.chain{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:14px}
.node{display:inline-flex;align-items:center;gap:8px;padding:8px 13px;border-radius:999px;background:var(--surf2);border:1px solid var(--line);font-weight:600;font-size:14px}
.node.start{background:transparent;color:var(--mut)}
.node.end{background:var(--lemon);color:var(--ink);border-color:var(--lemon)}
.sep{color:var(--mut)}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:var(--mut)}
.dot.ok{background:var(--ok)}.dot.bad{background:var(--bad)}.dot.idle{background:var(--warn)}.dot.off{background:#5B668F}
.linkrow{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:0}
.linkrow b{display:block}
.linkrow code{display:block;margin-top:4px;color:#C7CFFF}
.logs{list-style:none;margin:10px 0 0;padding:0}
.logs li{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-top:1px solid var(--line);font-size:14px}
.logs li:first-child{border-top:0}
.logs .bad{color:#FF9AA5}
.logs time{flex:none;color:var(--mut);font-size:13px;font-variant-numeric:tabular-nums}

/* Key */
.keycard h2{display:flex;align-items:center;gap:10px}
.num{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--lemon);color:var(--ink);font:800 16px/1 var(--f-head)}
.curkey{display:flex;align-items:center;gap:8px;margin:14px 0}
.curkey code{flex:1;min-width:0;padding:12px;border-radius:10px;background:#0C1230;color:var(--lemon);font-size:14px}
.curkey code.empty{color:var(--mut);font-family:var(--f-body);font-style:italic}
.stack{display:grid;gap:14px}
.field{display:grid;gap:6px;font-weight:600;font-size:14px;color:var(--text)}
.field small{font-weight:400;color:var(--mut)}
input:not([type=checkbox]),textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;background:#0C1230;color:var(--text);font:400 16px/1.4 var(--f-body);resize:vertical}
textarea{min-height:84px}
input:focus,textarea:focus{border-color:var(--lemon);outline:0;box-shadow:0 0 0 3px rgba(232,255,77,.25)}
body.adm .btn.block{margin-top:2px}

/* Link */
.flowhead{display:flex;align-items:center;justify-content:space-between;gap:12px}
.entry{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin:14px 0 4px;padding:14px;border-radius:12px;background:rgba(232,255,77,.07);border:1px solid rgba(232,255,77,.35)}
.entry .u{flex:1;min-width:220px}
.entry .u b{display:block;font-size:14px}
.entry code{display:block;margin-top:6px;color:var(--lemon)}
.steps{list-style:none;margin:18px 0 0;padding:0}
.steps li{position:relative;display:flex;gap:12px;padding-bottom:16px}
.steps li:last-child{padding-bottom:0}
.steps li:not(:last-child)::before{content:"";position:absolute;left:14px;top:32px;bottom:2px;width:2px;background:var(--line)}
.steps .n{display:grid;place-items:center;flex:none;width:30px;height:30px;border-radius:50%;background:var(--surf2);border:2px solid var(--lemon);color:var(--lemon);font:800 14px/1 var(--f-head)}
.steps .n.end{background:var(--lemon);color:var(--ink)}
.steps .n .ico{width:16px}
.steps .c{flex:1;min-width:0}
.steps .c b{display:block;font-size:15px}
.steps .c code{display:block;margin-top:4px;color:#C7CFFF}
.steps .err{margin-top:4px;color:#FFB3BB;font-size:13px}

/* API */
.pcard-top{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.pcard-top h3{margin-right:4px}
.pill{display:inline-flex;align-items:center;gap:7px;padding:4px 11px;border-radius:999px;border:1px solid var(--line);font-size:13px;font-weight:600}
.pill.ok{color:var(--ok);border-color:rgba(61,220,151,.4);background:rgba(61,220,151,.1)}
.pill.bad{color:#FF9AA5;border-color:rgba(255,107,122,.4);background:rgba(255,107,122,.1)}
.pill.idle{color:var(--warn);border-color:rgba(255,200,87,.4);background:rgba(255,200,87,.08)}
.pill.off{color:var(--mut)}
.tag{padding:3px 9px;border-radius:6px;border:1px solid rgba(232,255,77,.5);color:var(--lemon);font-size:12px;font-weight:700}
.sw{margin-left:auto}
.switch{position:relative;display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-size:14px;font-weight:600}
.switch input{position:absolute;opacity:0;width:44px;height:26px;margin:0;cursor:pointer}
.switch i{position:relative;flex:none;width:44px;height:26px;border-radius:999px;background:#38437A;transition:background .2s}
.switch i::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:#fff;transition:transform .2s}
.switch input:checked+i{background:var(--lemon)}
.switch input:checked+i::after{transform:translateX(18px);background:var(--ink)}
.switch input:focus-visible+i{outline:3px solid #fff;outline-offset:2px}
.meta{display:flex;flex-wrap:wrap;gap:6px 18px;margin-top:12px;color:var(--mut);font-size:13px}
.meta b{color:var(--text);font-weight:600}
.pcard .small{margin-top:10px}
.pcard .err{margin-top:12px;padding:10px 12px;border-radius:10px;background:rgba(255,107,122,.1);color:#FFB3BB;font-size:13px;word-break:break-word}
.tools{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.testbox{padding:18px;border-radius:16px;border:1px solid rgba(232,255,77,.4);background:var(--surf)}
.testbox h3{font-size:18px;margin-bottom:10px}
.trow{padding:12px 0;border-top:1px solid var(--line)}
.trow .h{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 12px}
.trow b{font-size:14px;word-break:break-word}
.trow code{display:block;margin-top:8px;color:var(--lemon)}
.okm{color:var(--ok)}.badm{color:#FF9AA5}
div.badm{margin-top:6px;font-size:13px;word-break:break-word}
details{margin-top:8px}
summary{cursor:pointer;color:var(--mut);font-size:13px}
details code{color:#C7CFFF;background:#0C1230;padding:8px 10px;border-radius:8px}

/* Thông báo */
.notice{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:12px;margin:0;background:rgba(61,220,151,.13);color:#9DF5CE;font-size:14px}
.notice.error{background:rgba(255,107,122,.13);color:#FFB3BB}
.notice.warn{background:rgba(255,200,87,.13);color:#FFD98A}
.testbox .notice{margin:8px 0}

/* Đăng nhập */
.login{min-height:100vh;display:grid;place-items:center;padding:20px}
.login .box{width:100%;max-width:400px;padding:28px;border-radius:20px;background:var(--surf);border:1px solid var(--line)}
.login .brand{margin-bottom:26px}
.login h1{margin-bottom:6px}
.login .notice{margin-bottom:14px}
.hint{margin-top:18px;color:var(--mut);font-size:13px}
.hint b{color:var(--text)}

/* Toast */
.toast{position:fixed;left:50%;bottom:22px;z-index:50;max-width:calc(100% - 32px);padding:11px 18px;border-radius:12px;background:var(--ink);color:#fff;font-size:14px;font-weight:600;box-shadow:0 10px 30px rgba(0,0,0,.35);opacity:0;transform:translate(-50%,12px);pointer-events:none;transition:opacity .2s,transform .2s}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media(min-width:720px){
 .grid{grid-template-columns:1fr 1fr}
 .stats{grid-template-columns:repeat(4,1fr)}
 .card{padding:22px}
 .page-title{font-size:34px}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}.btn:hover{transform:none}}
.edit{margin:12px 0;border:1px solid #38437A;border-radius:12px;padding:10px 14px}.edit summary{cursor:pointer;font-weight:700}.edit form{margin-top:12px}
.pub{padding:14px 0;border-top:1px solid #38437A}.pub:first-of-type{border-top:0}.pub .linkrow{display:flex;flex-direction:column;gap:10px}.pub .notice{margin-top:10px}
.pub .linkrow{padding:0!important;margin:0}.pub .linkrow>div{padding:0}