/* DQT Free Tools — shared design system (gold & black, glassmorphism).
   Used by: refresh-rate-test, mouse-polling-rate-test, keyboard-polling-rate-test. */

:root {
  --bg: #0a0a0a;
  --bg-2: #0f0d09;
  --gold: #d4af37;
  --gold-soft: #e8c96a;
  --gold-dim: rgba(212, 175, 55, 0.22);
  --glass: rgba(255, 255, 255, 0.035);
  --glass-2: rgba(255, 255, 255, 0.06);
  --text: #f2ecdd;
  --muted: #b3a98e;
  --faint: #7d7460;
  --ok: #58d68d;
  --warn: #e5a13a;
  --bad: #e46a5d;
  --radius: 16px;
  --shadow-dark: 0 18px 44px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 30px rgba(212, 175, 55, 0.08);
  --font-head: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background:
    radial-gradient(900px 480px at 82% -8%, rgba(212, 175, 55, 0.10), transparent 60%),
    radial-gradient(700px 420px at -6% 32%, rgba(212, 175, 55, 0.05), transparent 60%),
    var(--bg);
  color: var(--text);
  font: 400 15.5px/1.65 var(--font-body);
  min-height: 100vh;
}
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* ------------------------------- header ------------------------------- */
.tk-nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 14px; flex-wrap: wrap;
  padding: 12px clamp(16px, 4vw, 40px);
  background: rgba(10, 10, 10, 0.82); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--gold-dim);
}
.tk-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font: 600 13px var(--font-head); letter-spacing: 1.5px; text-transform: uppercase; }
.tk-brand:hover { text-decoration: none; color: var(--gold); }
.tk-brand img { height: 34px; width: auto; }
.tk-nav-links { display: flex; gap: 8px; flex-wrap: wrap; margin-inline-start: auto; }
.tk-pill {
  padding: 8px 14px; border-radius: 999px; font: 600 12.5px var(--font-body);
  border: 1px solid var(--gold-dim); color: var(--muted); background: var(--glass);
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.tk-pill:hover { color: var(--gold); border-color: var(--gold); text-decoration: none; transform: translateY(-1px); }
.tk-pill[aria-current="page"] { background: linear-gradient(135deg, #e8c96a, #b8902a); color: #1d1503; border-color: transparent; }

/* -------------------------------- layout ------------------------------- */
.tk-wrap { max-width: 1060px; margin: 0 auto; padding: clamp(22px, 4vw, 46px) clamp(16px, 4vw, 40px) 60px; }
.tk-hero { text-align: center; margin-bottom: clamp(22px, 4vw, 36px); animation: tkIn 0.5s ease both; }
.tk-kicker { color: var(--gold); font: 600 12.5px var(--font-body); letter-spacing: 2.5px; text-transform: uppercase; }
.tk-hero h1 { font: 700 clamp(26px, 4.6vw, 40px)/1.15 var(--font-head); letter-spacing: -0.5px; margin: 10px 0 12px; }
.tk-hero p { color: var(--muted); max-width: 640px; margin: 0 auto; font-size: 15px; }

/* --------------------------------- cards -------------------------------- */
.tk-card {
  background: var(--glass); border: 1px solid var(--gold-dim); border-radius: var(--radius);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-dark), var(--shadow-glow), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  animation: tkIn 0.5s ease both;
}
.tk-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 18px 0; }
.tk-stat { padding: 16px 16px 14px; text-align: center; position: relative; }
.tk-stat .lbl { display: flex; align-items: center; justify-content: center; gap: 6px; color: var(--faint); font: 600 11.5px var(--font-body); letter-spacing: 1.2px; text-transform: uppercase; }
.tk-stat .val { font: 700 clamp(22px, 3vw, 30px)/1.2 var(--font-head); color: var(--text); margin-top: 6px; font-variant-numeric: tabular-nums; transition: color 0.3s; }
.tk-stat .val small { font-size: 0.5em; color: var(--muted); font-weight: 600; margin-inline-start: 3px; }
.tk-stat.hot .val { color: var(--gold-soft); }

/* big live counter */
.tk-big { text-align: center; padding: clamp(20px, 4vw, 34px); margin: 18px 0; }
.tk-big .val { font: 800 clamp(52px, 11vw, 96px)/1 var(--font-head); color: var(--gold-soft); font-variant-numeric: tabular-nums; text-shadow: 0 0 34px rgba(212, 175, 55, 0.35); }
.tk-big .val small { font-size: 0.32em; color: var(--muted); font-weight: 700; }
.tk-big .sub { color: var(--faint); font-size: 13px; margin-top: 8px; }

/* ------------------------------- tooltips ------------------------------- */
.tip {
  display: inline-grid; place-items: center; width: 15px; height: 15px; border-radius: 50%;
  border: 1px solid var(--faint); color: var(--faint); font: 700 9.5px/1 var(--font-body);
  cursor: help; position: relative; flex: none;
}
.tip:hover, .tip:focus-visible { border-color: var(--gold); color: var(--gold); }
.tip::after {
  content: attr(data-tip); position: absolute; bottom: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(4px);
  width: max-content; max-width: 230px; padding: 8px 12px; border-radius: 10px;
  background: #171308; border: 1px solid var(--gold-dim); color: var(--text);
  font: 400 12px/1.5 var(--font-body); text-transform: none; letter-spacing: 0; text-align: start;
  opacity: 0; pointer-events: none; transition: opacity 0.2s, transform 0.2s; z-index: 30;
  box-shadow: var(--shadow-dark); white-space: normal;
}
.tip:hover::after, .tip:focus-visible::after { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ------------------------------ test stage ------------------------------ */
.tk-stage {
  position: relative; overflow: hidden; min-height: 200px; margin: 18px 0;
  display: grid; place-items: center; text-align: center; padding: 26px;
  background: linear-gradient(180deg, rgba(212, 175, 55, 0.05), transparent 55%), var(--bg-2);
  cursor: crosshair; user-select: none;
}
.tk-stage .hint { color: var(--muted); font-size: 14.5px; max-width: 420px; position: relative; z-index: 1; }
.tk-stage .hint b { color: var(--gold-soft); }
.tk-stage.armed { border-color: var(--gold); box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.14), var(--shadow-dark); }
.tk-key {
  display: inline-block; min-width: 70px; margin-top: 14px; padding: 12px 20px; border-radius: 12px;
  background: var(--glass-2); border: 1px solid var(--gold-dim);
  font: 700 22px var(--font-head); color: var(--gold-soft);
}

/* motion orbs (refresh test) — three tracks at increasing speeds */
.tk-stage-motion { min-height: 320px; align-items: start; padding-bottom: 190px; }
.tk-track { position: absolute; inset: auto 0 22px; height: 46px; pointer-events: none; }
.tk-track.t1 { bottom: 128px; }
.tk-track.t2 { bottom: 75px; }
.tk-track.t3 { bottom: 22px; }
.tk-track::before { content: ""; position: absolute; inset: 50% 12px auto; height: 1px; background: rgba(212, 175, 55, 0.12); }
.tk-speed {
  position: absolute; top: 50%; inset-inline-start: 14px; transform: translateY(-50%);
  color: var(--faint); font: 700 11px var(--font-head); letter-spacing: 1px; z-index: 1;
}
.tk-orb {
  position: absolute; top: 50%; left: 0; width: 26px; height: 26px; margin-top: -13px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #ffe9a8, var(--gold) 60%, #8a6b14);
  box-shadow: 0 0 18px rgba(212, 175, 55, 0.8), 0 0 46px rgba(212, 175, 55, 0.35);
  will-change: transform;
}
.tk-orb::after { content: ""; position: absolute; inset: 4px -46px 4px 12px; border-radius: 999px;
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.5), transparent 80%); transform: scaleX(-1); }

/* ------------------------------- controls ------------------------------- */
.tk-controls { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin: 18px 0; }
.tk-btn {
  padding: 12px 22px; border-radius: 12px; border: 1px solid var(--gold-dim);
  background: var(--glass-2); color: var(--text); font: 600 14px var(--font-body); cursor: pointer;
  transition: transform 0.18s, border-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.tk-btn:hover:not(:disabled) { border-color: var(--gold); color: var(--gold-soft); transform: translateY(-1px); }
.tk-btn:active:not(:disabled) { transform: scale(0.96); }
.tk-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.tk-btn.primary { background: linear-gradient(135deg, #e8c96a, #b8902a); color: #1d1503; border-color: transparent; box-shadow: 0 6px 22px rgba(212, 175, 55, 0.28); }
.tk-btn.primary:hover:not(:disabled) { color: #1d1503; box-shadow: 0 10px 28px rgba(212, 175, 55, 0.45); }

/* -------------------------------- graph --------------------------------- */
.tk-graph-card { padding: 18px; margin: 18px 0; }
.tk-graph-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 10px; }
.tk-graph-head h2 { font: 600 14px var(--font-head); letter-spacing: 1px; text-transform: uppercase; color: var(--muted); }
.tk-graph-head span { font: 600 12px var(--font-body); color: var(--faint); }
canvas.tk-graph { width: 100%; height: 150px; display: block; border-radius: 10px; background: var(--bg-2); }

/* -------------------------------- rating -------------------------------- */
.tk-rating {
  display: none; margin: 18px 0; padding: 18px 22px; text-align: center;
  border-radius: var(--radius); border: 1px solid var(--gold);
  background: linear-gradient(90deg, rgba(212, 175, 55, 0.12), rgba(212, 175, 55, 0.03));
  animation: tkPop 0.45s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
.tk-rating.show { display: block; }
.tk-rating b { font: 700 20px var(--font-head); color: var(--gold-soft); display: block; }
.tk-rating span { color: var(--muted); font-size: 13.5px; }

/* ------------------------------- sys info ------------------------------- */
.tk-sys { padding: 18px; margin: 18px 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px 22px; }
.tk-sys div { font-size: 13px; color: var(--muted); }
.tk-sys b { display: block; color: var(--faint); font: 600 11px var(--font-body); letter-spacing: 1.2px; text-transform: uppercase; margin-bottom: 2px; }

/* ------------------------------- seo note ------------------------------- */
.tk-note { margin: 26px 0 0; padding: 20px; }
.tk-note h2 { font: 600 17px var(--font-head); margin-bottom: 8px; color: var(--gold-soft); }
.tk-note p { color: var(--muted); font-size: 14px; }
.tk-note p + p { margin-top: 10px; }

/* -------------------------------- footer -------------------------------- */
.tk-footer { border-top: 1px solid var(--gold-dim); margin-top: 30px; padding: 22px clamp(16px, 4vw, 40px); display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; color: var(--faint); font-size: 13px; }

/* ------------------------------ animations ------------------------------ */
@keyframes tkIn { from { opacity: 0; transform: translateY(14px); } }
@keyframes tkPop { from { opacity: 0; transform: scale(0.92); } }
.tk-copied { color: var(--ok) !important; border-color: var(--ok) !important; }

@media (max-width: 560px) {
  .tk-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tk-nav-links { margin-inline-start: 0; }
}
@media (min-width: 2200px) { .tk-wrap { max-width: 1400px; } body { font-size: 17px; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .tk-card, .tk-hero, .tk-rating { animation: none; }
  .tk-orb { display: none; }
  .tk-btn, .tk-pill { transition: none; }
}