/* ThinhStudio Games — hệ giao diện chung, kế thừa thinhstudio.id.vn
   Inter + JetBrains Mono, nền lưới mờ, nhấn xanh sky, sáng/tối. */
:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-2: #f1f5f9;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-2: #475569;
  --muted: #94a3b8;
  --accent: #0284c7;
  --accent-2: #0ea5e9;
  --accent-soft: rgba(14, 165, 233, .1);
  --accent-ring: rgba(14, 165, 233, .35);
  --on-accent: #ffffff;
  --ok: #059669;
  --ok-soft: rgba(16, 185, 129, .12);
  --warn: #d97706;
  --warn-soft: rgba(245, 158, 11, .14);
  --rose: #e11d48;
  --rose-soft: rgba(225, 29, 72, .1);
  --violet: #4f46e5;
  --violet-soft: rgba(79, 70, 229, .1);
  --grid: rgba(15, 23, 42, .045);
  --glow: rgba(14, 165, 233, .14);
  --shadow: 0 1px 2px rgba(15, 23, 42, .04), 0 8px 24px rgba(15, 23, 42, .06);
  --shadow-lg: 0 2px 4px rgba(15, 23, 42, .04), 0 18px 48px rgba(15, 23, 42, .1);
  --radius: 16px;
  --radius-sm: 10px;
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'Cascadia Code', monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0f1c; --surface: #0f172a; --surface-2: #1e293b; --border: #1e293b; --border-strong: #334155;
    --text: #e2e8f0; --text-2: #94a3b8; --muted: #64748b;
    --accent: #38bdf8; --accent-2: #7dd3fc; --accent-soft: rgba(56, 189, 248, .12); --accent-ring: rgba(56, 189, 248, .4); --on-accent: #082f49;
    --ok: #34d399; --ok-soft: rgba(52, 211, 153, .14); --warn: #fbbf24; --warn-soft: rgba(251, 191, 36, .14);
    --rose: #fb7185; --rose-soft: rgba(251, 113, 133, .14); --violet: #818cf8; --violet-soft: rgba(129, 140, 248, .14);
    --grid: rgba(148, 163, 184, .06); --glow: rgba(56, 189, 248, .12);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
    --shadow-lg: 0 2px 4px rgba(0, 0, 0, .3), 0 18px 48px rgba(0, 0, 0, .4);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0a0f1c; --surface: #0f172a; --surface-2: #1e293b; --border: #1e293b; --border-strong: #334155;
  --text: #e2e8f0; --text-2: #94a3b8; --muted: #64748b;
  --accent: #38bdf8; --accent-2: #7dd3fc; --accent-soft: rgba(56, 189, 248, .12); --accent-ring: rgba(56, 189, 248, .4); --on-accent: #082f49;
  --ok: #34d399; --ok-soft: rgba(52, 211, 153, .14); --warn: #fbbf24; --warn-soft: rgba(251, 191, 36, .14);
  --rose: #fb7185; --rose-soft: rgba(251, 113, 133, .14); --violet: #818cf8; --violet-soft: rgba(129, 140, 248, .14);
  --grid: rgba(148, 163, 184, .06); --glow: rgba(56, 189, 248, .12);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  --shadow-lg: 0 2px 4px rgba(0, 0, 0, .3), 0 18px 48px rgba(0, 0, 0, .4);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body.ts {
  margin: 0; min-height: 100vh; font-family: var(--font); color: var(--text); background-color: var(--bg);
  background-image:
    radial-gradient(900px 480px at 50% -120px, var(--glow), transparent 70%),
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased; line-height: 1.55;
}
.ts a { color: inherit; text-decoration: none; }
.ts button { font: inherit; color: inherit; cursor: pointer; }
.ts :focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.ts-wrap { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.mono { font-family: var(--mono); }
.hidden { display: none !important; }

/* ---- Thanh trên ---- */
.ts-top {
  position: sticky; top: 0; z-index: 50; border-bottom: 1px solid transparent;
  background: color-mix(in srgb, var(--bg) 78%, transparent); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  transition: border-color .2s;
}
.ts-top.scrolled { border-bottom-color: var(--border); }
.ts-top .ts-wrap { display: flex; align-items: center; gap: 12px; height: 60px; }
.ts-logo { font-family: var(--mono); font-weight: 700; font-size: 15px; letter-spacing: .02em; white-space: nowrap; }
.ts-logo b { color: var(--accent); font-weight: 700; }
.ts-logo small { color: var(--muted); font-weight: 500; font-size: 12px; margin-left: 6px; }
.ts-nav { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.ts-nav a { font-size: 14px; color: var(--text-2); padding: 6px 12px; border-radius: 8px; transition: color .15s, background .15s; }
.ts-nav a:hover { color: var(--text); background: var(--surface-2); }
.ts-nav .ts-btn { margin-left: 4px; }
@media (max-width: 640px) { .ts-nav a.hide-sm { display: none; } }
.ts-icon-btn {
  width: 36px; height: 36px; display: inline-grid; place-items: center; flex: none;
  border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--text-2);
  transition: color .15s, border-color .15s, transform .1s;
}
.ts-icon-btn:hover { color: var(--accent); border-color: var(--accent-ring); }
.ts-icon-btn:active { transform: scale(.94); }
.ts-icon-btn svg { width: 17px; height: 17px; }
.ts-icon-btn .i-moon { display: none; }
:root[data-theme="dark"] .ts-icon-btn .i-sun { display: none; }
:root[data-theme="dark"] .ts-icon-btn .i-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .ts-icon-btn .i-sun { display: none; }
  :root:not([data-theme="light"]) .ts-icon-btn .i-moon { display: block; }
}

/* ---- Chữ ---- */
.ts-eyebrow { font-family: var(--mono); font-size: 13px; color: var(--accent); letter-spacing: .12em; }
.ts-display { font-weight: 900; letter-spacing: -.045em; line-height: .9; margin: 0; }
.ts-display .dot { color: var(--accent); }
.ts-h2 { font-size: clamp(24px, 4vw, 34px); font-weight: 800; letter-spacing: -.03em; margin: 6px 0 0; line-height: 1.15; }
.ts-lead { color: var(--text-2); font-size: 17px; }
.ts-lead strong { color: var(--accent); font-weight: 600; }

/* ---- Nhãn ---- */
.ts-pill {
  display: inline-flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 12px; color: var(--text-2);
  padding: 5px 12px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border); white-space: nowrap;
}
.ts-pill .led { width: 7px; height: 7px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 0 3px var(--accent-soft); }
.ts-pill.ok .led { background: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.ts-pill.warn .led { background: var(--warn); box-shadow: 0 0 0 3px var(--warn-soft); }
.ts-pill.live .led { animation: led 1.6s ease-in-out infinite; }
@keyframes led { 50% { opacity: .35; } }
.ts-chip {
  display: inline-flex; align-items: center; font-family: var(--mono); font-size: 11px; padding: 3px 8px; border-radius: 6px;
  background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border);
}
.ts-chip.accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }

/* ---- Nút ---- */
.ts-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 42px; padding: 0 18px;
  border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font-weight: 600; font-size: 14px; white-space: nowrap; transition: transform .1s, box-shadow .2s, border-color .15s, background .15s;
}
.ts-btn:hover { border-color: var(--border-strong); }
.ts-btn:active { transform: translateY(1px) scale(.98); }
.ts-btn:disabled { opacity: .45; pointer-events: none; }
.ts-btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); box-shadow: 0 6px 18px var(--accent-ring); }
.ts-btn.primary:hover { filter: brightness(1.08); box-shadow: 0 8px 24px var(--accent-ring); }
.ts-btn.soft { background: var(--accent-soft); border-color: transparent; color: var(--accent); }
.ts-btn.sm { height: 34px; padding: 0 12px; font-size: 13px; border-radius: 8px; }
.ts-btn.lg { height: 50px; padding: 0 24px; font-size: 15px; }
.ts-btn.block { width: 100%; }
.ts-btn .arrow { transition: transform .2s; }
.ts-btn:hover .arrow { transform: translateX(3px); }

/* ---- Thẻ ---- */
.ts-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.ts-card.pad { padding: 18px; }
.ts-input {
  width: 100%; height: 42px; padding: 0 14px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font: inherit; font-size: 14px; transition: border-color .15s, box-shadow .15s;
}
.ts-input::placeholder { color: var(--muted); }
.ts-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.ts-label { display: block; font-family: var(--mono); font-size: 12px; color: var(--muted); margin-bottom: 6px; }

/* ---- Chân trang ---- */
.ts-foot { border-top: 1px solid var(--border); margin-top: 72px; padding: 28px 0 36px; color: var(--muted); font-size: 13px; }
.ts-foot .ts-wrap { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; }
.ts-foot a:hover { color: var(--accent); }

/* ---- Hiệu ứng xuất hiện ---- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }