/* Tikron brand system — shared tokens + components for every public page.
   Dark, neon engineering aesthetic ("infrastructure for games"). No build step,
   no external fonts or CDNs. */

:root {
  color-scheme: dark;

  /* surfaces */
  --bg: #0a0e14;
  --panel: #10151d;
  --raised: #161d27;
  --border: #232b36;

  /* text */
  --text: #e6edf3;
  --muted: #8b98a8;

  /* accents */
  --neon: #00e5a0; /* primary — CTAs, key numbers, logo accent (used sparingly) */
  --neon-dim: #00b37e;
  --secondary: #58a6ff;
  --warn: #f2cc60;
  --danger: #ff6b6b;

  /* type */
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;

  /* layout */
  --maxw: 1080px;
  --radius: 10px;
  --glow: 0 0 0.6em rgba(0, 229, 160, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--secondary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

h1,
h2,
h3 {
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

/* Numbers, ids, code — monospace, per the brand. */
.mono,
code,
kbd,
pre {
  font-family: var(--font-mono);
}

:focus-visible {
  outline: 2px solid var(--neon);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- layout helpers --- */

.container {
  width: min(var(--maxw), 92vw);
  margin: 0 auto;
}

.section {
  padding: 72px 0;
  border-top: 1px solid var(--border);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--neon);
}

.grid {
  display: grid;
  gap: 18px;
}
@media (min-width: 760px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- wordmark --- */

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: 0.02em;
  color: var(--text);
}
.wordmark:hover {
  text-decoration: none;
}
.wordmark .i {
  color: var(--neon);
  text-shadow: var(--glow);
}
.wordmark svg {
  display: block;
}

/* --- buttons --- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--raised);
  color: var(--text);
  font: inherit;
  font-weight: 550;
  cursor: pointer;
  transition:
    transform 0.08s ease,
    border-color 0.15s ease,
    background 0.15s ease;
}
.btn:hover {
  text-decoration: none;
  border-color: #33404f;
  transform: translateY(-1px);
}
.btn-primary {
  background: var(--neon);
  border-color: var(--neon);
  color: #04120c;
  box-shadow: 0 0 0 1px rgba(0, 229, 160, 0.15), 0 6px 22px -8px rgba(0, 229, 160, 0.5);
}
.btn-primary:hover {
  background: #16f2b0;
  border-color: #16f2b0;
}
.btn-ghost {
  background: transparent;
}

/* --- cards / panels --- */

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.card h3 {
  font-size: 17px;
}
.card p {
  color: var(--muted);
  margin: 0;
  font-size: 15px;
}

/* --- badges --- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--raised);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.badge-neon {
  border-color: rgba(0, 229, 160, 0.4);
  color: var(--neon);
}
.badge-dot::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: var(--glow);
}

/* --- code blocks --- */

pre {
  margin: 0;
  padding: 16px 18px;
  background: #070a0f;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.7;
}
pre code {
  color: var(--text);
}
:not(pre) > code {
  background: var(--raised);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: 0.88em;
}
.tok-key {
  color: var(--secondary);
}
.tok-fn {
  color: var(--neon);
}
.tok-str {
  color: var(--warn);
}
.tok-com {
  color: var(--muted);
}

/* --- top bar (shared by landing + demo frame) --- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}
.topbar nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}
.topbar nav a {
  color: var(--muted);
}
.topbar nav a:hover {
  color: var(--text);
}

/* --- reduced motion --- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}