/* TikGami — kiểu chung cho mọi trang. Tối là mặc định (sân khấu LIVE), sáng bật bằng data-theme="light". */
:root {
    --ground: #0B0B10; --surface: #15151D; --surface-2: #1D1D27; --line: rgba(255,255,255,.1); --line-strong: rgba(255,255,255,.18);
    --text: #F2F2F6; --muted: #9C9CAA; --dim: #6B6B78;
    --red: #FE2C55; --red-deep: #D91E46; --aqua: #25F4EE; --aqua-text: #25F4EE; --gold: #FFC94A; --gold-text: #FFC94A; --green: #2EE6A6;
    --display: "Unbounded", "Be Vietnam Pro", system-ui, sans-serif;
    --body: "Be Vietnam Pro", -apple-system, "Segoe UI", system-ui, sans-serif;
    --radius: 14px;
    color-scheme: dark;
}
:root[data-theme="light"] {
    --ground: #F6F6F8; --surface: #FFFFFF; --surface-2: #EEEEF3; --line: rgba(22,24,35,.1); --line-strong: rgba(22,24,35,.2);
    --text: #161823; --muted: #5C5C6B; --dim: #8A8A98;
    --aqua-text: #0D9C97; --gold-text: #9A6B00;
    color-scheme: light;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--ground); color: var(--text); font: 16px/1.6 var(--body); padding-inline: 20px; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); margin: 0; text-wrap: balance; letter-spacing: -.01em; }
h2 { font-size: clamp(26px, 3.4vw, 38px); font-weight: 800; line-height: 1.15; }
h3 { font-size: 18px; font-weight: 700; }
p { margin: 0; }
.wrap { max-width: 1120px; margin-inline: auto; }
.narrow { max-width: 760px; margin-inline: auto; }
.eyebrow { font-size: 12px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase; color: var(--aqua-text); }
.muted { color: var(--muted); }
section { padding-block: 72px; }
section + section { border-top: 1px solid var(--line); }
.glitch { text-shadow: -2px -1px 0 var(--aqua), 2px 1px 0 var(--red); }
:focus-visible { outline: 2px solid var(--aqua-text); outline-offset: 3px; }
code { background: var(--surface-2); padding: 1px 6px; border-radius: 6px; font-size: .9em; }

/* ---- nav ---- */
nav { display: flex; align-items: center; gap: 24px; padding-block: 18px; }
nav .brand { display: flex; align-items: center; gap: 10px; font-family: var(--display); font-weight: 800; font-size: 20px; text-decoration: none; }
nav .brand img { width: 36px; height: 36px; border-radius: 50%; }
nav .links { margin-left: auto; display: flex; gap: 22px; font-size: 14px; font-weight: 500; align-items: center; }
nav .links a { color: var(--muted); text-decoration: none; }
nav .links a:hover { color: var(--text); }
nav .tools { display: flex; gap: 8px; align-items: center; }
.icon-btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; height: 36px; min-width: 36px; padding: 0 10px; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); font: 600 13px var(--body); cursor: pointer; }
.icon-btn:hover { background: var(--surface-2); }
.icon-btn svg { width: 16px; height: 16px; }

/* ---- nút ---- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 14px 22px; border-radius: 999px; font: 600 16px var(--body); text-decoration: none; border: 1px solid var(--line-strong); color: var(--text); background: var(--surface); cursor: pointer; transition: transform .15s, background .15s; }
.btn:hover { background: var(--surface-2); transform: translateY(-1px); }
.btn.primary { background: var(--red); border-color: var(--red); color: #fff; box-shadow: 0 10px 30px rgba(254,44,85,.3); }
.btn.primary:hover { background: var(--red-deep); border-color: var(--red-deep); }
.btn.small { padding: 10px 16px; font-size: 14px; }
.btn:disabled { opacity: .5; cursor: default; transform: none; }
.btn svg { width: 18px; height: 18px; flex: none; }
.btn small { font-weight: 400; color: rgba(255,255,255,.7); font-size: 12px; }

/* ---- form ---- */
.field { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.field input { font: 15px var(--body); color: var(--text); background: var(--surface-2); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; width: 100%; }
.field input:focus { outline: none; border-color: var(--aqua-text); }
.msg { font-size: 14px; color: var(--muted); min-height: 1.4em; }
.msg.bad { color: var(--red); } .msg.good { color: var(--green); }

/* ---- thẻ chung ---- */
.card { padding: 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.step .n { font-family: var(--display); font-weight: 800; font-size: 13px; color: var(--red); letter-spacing: .1em; }
.step h3 { margin-top: 10px; }
.step p { color: var(--muted); margin-top: 8px; font-size: 15px; }

/* ---- hero ---- */
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px; align-items: center; padding-block: 56px 72px; }
.hero h1 { font-size: clamp(34px, 5vw, 60px); font-weight: 800; line-height: 1.06; }
.hero h1 em { font-style: normal; color: var(--red); }
.hero .lead { font-size: 18px; max-width: 34em; color: var(--muted); margin-top: 20px; }
.hero .cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; align-items: center; }
.hero .alt { font-size: 13px; color: var(--dim); margin-top: 14px; }
.hero .alt a { color: var(--muted); }
.hero .proof { display: flex; gap: 28px; margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.hero .proof b { display: block; font-family: var(--display); font-size: 22px; font-weight: 700; font-variant-numeric: tabular-nums; }
.hero .proof span { font-size: 13px; color: var(--muted); }
.stage { position: relative; display: grid; place-items: center; min-height: 560px; }
.stage::before { content: ""; position: absolute; inset: 10% 5%; background: radial-gradient(ellipse at 50% 40%, rgba(254,44,85,.35), transparent 60%), radial-gradient(ellipse at 70% 80%, rgba(37,244,238,.22), transparent 55%); filter: blur(30px); }
.phone { position: relative; width: 270px; aspect-ratio: 9 / 19; border-radius: 40px; background: #000; border: 9px solid #1c1c1e; box-shadow: 0 0 0 2px #3a3a3c, 0 40px 90px rgba(0,0,0,.5); overflow: hidden; }
.phone video { width: 100%; height: 100%; object-fit: cover; display: block; background: #000; }
.phone .island { position: absolute; top: 10px; left: 50%; transform: translateX(-50%); width: 28%; height: 22px; background: #000; border-radius: 999px; }
.phone .live { position: absolute; top: 44px; left: 14px; display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 6px; background: var(--red); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .08em; }
.phone .live i { width: 7px; height: 7px; border-radius: 50%; background: #fff; animation: blink 1.4s infinite; }
@keyframes blink { 50% { opacity: .3; } }

/* ---- game ---- */
.games { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.game { border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); overflow: hidden; display: flex; flex-direction: column; }
.game .shot { aspect-ratio: 9 / 16; max-height: 360px; width: 100%; object-fit: cover; object-position: top; display: block; background: #000; }
.game .body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.game h3 { font-size: 17px; }
.game .tag { font-size: 14px; color: var(--muted); }
.game .price { font-size: 13px; color: var(--gold-text); font-weight: 600; font-variant-numeric: tabular-nums; }
.game .chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: auto; padding-top: 8px; }
.chip { font-size: 11px; padding: 3px 8px; border-radius: 999px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--line); }
.rule { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 40px; }
.rule div { padding: 16px 18px; border-radius: 12px; background: var(--surface); border: 1px dashed var(--line-strong); font-size: 14px; }
.rule b { color: var(--aqua-text); font-weight: 600; }
.rule .gift b { color: var(--gold-text); }

/* ---- CTA ---- */
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

/* ---- tính năng ---- */
.feature h3 { font-size: 17px; display: flex; align-items: center; gap: 10px; }
.feature h3 svg { width: 22px; height: 22px; color: var(--red); flex: none; }
.feature p { color: var(--muted); margin-top: 8px; font-size: 15px; }

/* ---- giá ---- */
.plans { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 20px; margin-top: 36px; align-items: start; }
.plan { padding: 28px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.plan.hot { border-color: var(--red); box-shadow: 0 0 0 1px var(--red) inset; }
.plan .name { font-family: var(--display); font-weight: 700; font-size: 18px; }
.plan .amount { font-family: var(--display); font-weight: 800; font-size: 40px; margin-top: 10px; font-variant-numeric: tabular-nums; line-height: 1; }
.plan .amount small { font: 500 14px var(--body); color: var(--muted); }
.plan ul { margin: 18px 0 0; padding: 0; display: grid; gap: 8px; }
.plan li { list-style: none; padding-left: 22px; position: relative; font-size: 15px; color: var(--muted); }
.plan li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 700; }
.plan .btn { margin-top: 22px; width: 100%; }
.plan table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 15px; }
.plan td { padding: 10px 0; border-top: 1px solid var(--line); }
.plan td:last-child { text-align: right; font-variant-numeric: tabular-nums; font-weight: 600; white-space: nowrap; }

/* ---- FAQ ---- */
.faq { margin-top: 36px; display: grid; gap: 10px; max-width: 800px; }
.faq details { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); padding: 0 20px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--muted); font-weight: 400; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--muted); padding-bottom: 18px; font-size: 15px; }

/* ---- liên hệ ---- */
.contact { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.contact .card a { text-decoration: none; }
.contact .card .big { font-family: var(--display); font-weight: 700; font-size: 17px; margin-top: 6px; }
.contact .card p { color: var(--muted); font-size: 14px; margin-top: 6px; }
.company { margin-top: 28px; padding: 22px 26px; border-radius: var(--radius); background: var(--surface-2); font-size: 14px; color: var(--muted); display: grid; gap: 4px; }
.company b { color: var(--text); }

/* ---- tải về ---- */
.downloads { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; margin-top: 36px; }
.dl { padding: 24px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 6px; }
.dl.best { border-color: var(--red); box-shadow: 0 0 0 1px var(--red) inset; }
.dl .os { font-family: var(--display); font-weight: 700; font-size: 18px; }
.dl .meta { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.dl .btn { margin-top: 14px; }
.notes { margin-top: 28px; font-size: 14px; color: var(--muted); }
.notes ul { margin: 0; padding: 0; display: grid; gap: 8px; }
.notes li { list-style: none; padding-left: 20px; position: relative; }
.notes li::before { content: ""; position: absolute; left: 0; top: .6em; width: 8px; height: 8px; border-radius: 50%; background: var(--aqua-text); }

/* ---- tài khoản ---- */
.account { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 24px; margin-top: 36px; align-items: start; }
.subs { display: grid; gap: 10px; margin-top: 16px; }
.sub { display: flex; align-items: center; gap: 14px; padding: 14px 16px; border-radius: 12px; background: var(--surface-2); border: 1px solid var(--line); }
.sub .name { font-weight: 600; }
.sub .state { font-size: 13px; color: var(--muted); }
.sub .state.on { color: var(--green); }
.sub .btn { margin-left: auto; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; background: var(--surface-2); border: 1px solid var(--line); color: var(--muted); }
.pill.on { color: var(--green); border-color: rgba(46,230,166,.4); }

/* ---- văn bản pháp lý ---- */
.legal h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; }
.legal h2 { font-size: 20px; margin-top: 36px; }
.legal p, .legal li { color: var(--muted); font-size: 15px; }
.legal p { margin-top: 12px; }
.legal ul { padding-left: 20px; margin: 10px 0 0; }
.legal .updated { font-size: 13px; color: var(--dim); margin-top: 10px; }

footer { padding-block: 36px 48px; border-top: 1px solid var(--line); font-size: 13px; color: var(--dim); display: grid; gap: 14px; }
footer .row { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; }
footer a { color: var(--muted); text-decoration: none; }
footer a:hover { color: var(--text); }

@media (max-width: 900px) {
    .hero, .plans, .account, .grid-2 { grid-template-columns: 1fr; gap: 28px; }
    .stage { min-height: 520px; }
    .grid-3, .contact, .downloads, .rule { grid-template-columns: 1fr; }
    .games { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    nav .links a { display: none; }
}
@media (max-width: 520px) {
    .games { grid-template-columns: 1fr; }
    section { padding-block: 52px; }
}
@media (prefers-reduced-motion: reduce) {
    .phone .live i { animation: none; }
    html { scroll-behavior: auto; }
}

/* ---- hộp thoại ---- */
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 20px; background: rgba(0,0,0,.6); backdrop-filter: blur(4px); }
.modal[hidden] { display: none; }
.modal-box { position: relative; width: min(480px, 100%); padding: 28px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line-strong); box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.modal-close { position: absolute; top: 14px; right: 14px; }
.modal-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }