/* ============================================================
   NEKOVA Docs — Theme Tokens
   Concept: "The language that's alive" — green is Nigeria's flag,
   a terminal cursor, and growth, all at once. Everything glows
   the way an active cursor or a running process does: a steady
   pulse, not a blaze. Red/amber are reserved strictly for actual
   errors and warnings — exactly like NEKOVA's own error output —
   never used decoratively. Palette pulled directly from the
   NEKOVA VS Code theme, not invented for this page.
   ============================================================ */

:root {
  /* --- Core palette (from nekova-dark-color-theme.json) --- */
  --nk-black:      #0A0C0B;   /* activity bar / deepest background */
  --nk-black-2:    #0D100E;   /* editor background */
  --nk-black-3:    #161B17;   /* panels, cards, code blocks */
  --nk-grey:       #3D6B4D;   /* muted green-grey — comments, secondary text */
  --nk-grey-2:     #1A211C;   /* dividers, borders */

  --nk-green-bright: #3DDC84; /* AI-native glow — think/remember/recall, cursor */
  --nk-green:        #2ECC71; /* declarations, badges, primary accent */
  --nk-green-deep:   #1F7A4C; /* status bar, depth, pressed states */
  --nk-green-pale:   #A8F0C6; /* strings, soft highlights */

  --nk-white:      #FFFFFF;   /* primary text, control-flow keywords */
  --nk-white-2:    #C9D6CE;   /* secondary text (white cooled toward green-grey) */
  --nk-white-3:    #8AA093;   /* faint text, captions */

  /* Errors/warnings — reserved, never decorative */
  --nk-error:      #FF5C5C;
  --nk-warning:    #E8B84B;

  /* --- Type --- */
  --font-display: 'Cinzel', 'Georgia', serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-code:    'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* --- Scale --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 9rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-glow-green: 0 0 40px -8px rgba(61, 220, 132, 0.4);
  --shadow-card: 0 4px 24px -8px rgba(0, 0, 0, 0.55);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--nk-black);
  color: var(--nk-white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* Faint noise/grain so the black isn't dead-flat */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.02;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--nk-white);
  line-height: 1.25;
}

a { color: var(--nk-green); text-decoration: none; }
a:hover { color: var(--nk-green-bright); }

code, pre, kbd {
  font-family: var(--font-code);
  font-size: 0.9em;
}

code:not(pre code) {
  background: var(--nk-black-3);
  border: 1px solid var(--nk-grey-2);
  border-radius: var(--radius-sm);
  padding: 0.15em 0.45em;
  color: var(--nk-green-bright);
}

pre {
  background: var(--nk-black-3);
  border: 1px solid var(--nk-grey-2);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  overflow-x: auto;
  position: relative;
  box-shadow: var(--shadow-card);
}

pre.glow-border {
  transition: box-shadow 0.4s ease, border-color 0.4s ease;
}
pre.glow-border:hover {
  border-color: var(--nk-green-deep);
  box-shadow: var(--shadow-card), var(--shadow-glow-green);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--nk-white);
}

/* Token colors — matches the actual VS Code grammar, not invented */
.tok-kw   { color: var(--nk-white); font-weight: 600; }        /* control flow: if, for, return */
.tok-decl { color: var(--nk-green); }                          /* task, let, const, class */
.tok-ai   { color: var(--nk-green-bright); font-weight: 600; } /* think, remember, recall */
.tok-str  { color: var(--nk-green-pale); }
.tok-num  { color: var(--nk-white); }
.tok-const{ color: var(--nk-green-bright); font-weight: 600; } /* true, false, null */
.tok-com  { color: var(--nk-grey); font-style: italic; }
.tok-fn   { color: var(--nk-white); }

::selection { background: rgba(46, 204, 113, 0.28); color: var(--nk-white); }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--nk-black); }
::-webkit-scrollbar-thumb {
  background: var(--nk-grey-2);
  border-radius: 10px;
  border: 2px solid var(--nk-black);
}
::-webkit-scrollbar-thumb:hover { background: var(--nk-grey); }

/* Focus visibility (accessibility floor) */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--nk-green-bright);
  outline-offset: 2px;
}

/* --- Shared: signal-line divider (signature motif) ---
   A traveling pulse along a thin line, like a terminal cursor
   or a heartbeat — "the language is alive." */
.signal-line {
  height: 1px;
  width: 100%;
  background: var(--nk-grey-2);
  position: relative;
  margin: var(--space-6) 0;
  overflow: hidden;
}
.signal-line::after {
  content: "";
  position: absolute;
  top: -1.5px; left: -10%;
  width: 14%; height: 4px;
  background: linear-gradient(90deg, transparent, var(--nk-green-bright), transparent);
  filter: blur(1px);
  animation: signal-travel 4.5s ease-in-out infinite;
}
@keyframes signal-travel {
  0%   { left: -10%; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { left: 100%; opacity: 0; }
}
@media (prefers-reduced-motion: reduce) {
  .signal-line::after { animation: none; opacity: 0; }
}

/* --- Shared: top nav bar --- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-5);
  background: rgba(10, 12, 11, 0.85);
  border-filter: blur(10px);
  border-bottom: 1px solid var(--nk-grey-2);
}
.topbar .brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--nk-white);
  display: flex;
  align-items: center;
  gap: 0.5em;
}
.topbar .brand .cursor-dot {
  color: var(--nk-green-bright);
  animation: blink 1.4s step-start infinite;
}
@keyframes blink { 50% { opacity: 0.15; } }
.topbar nav { display: flex; gap: var(--space-5); align-items: center; }
.topbar nav a {
  color: var(--nk-white-2);
  font-size: 0.92rem;
  font-weight: 500;
}
.topbar nav a:hover { color: var(--nk-green-bright); }
.topbar .cta {
  border: 1px solid var(--nk-green-deep);
  border-radius: var(--radius-sm);
  padding: 0.4em 1em;
  color: var(--nk-green) !important;
}
.topbar .cta:hover {
  border-color: var(--nk-green);
  background: rgba(46, 204, 113, 0.08);
  color: var(--nk-green-bright) !important;
}

.site-footer {
  border-top: 1px solid var(--nk-grey-2);
  padding: var(--space-6) var(--space-5);
  color: var(--nk-white-3);
  font-size: 0.88rem;
  text-align: center;
}
.site-footer a { color: var(--nk-white-2); }

/* Reveal-on-scroll base state (JS adds .is-visible) */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1),
              transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1),
              filter 0.7s ease;
  filter: brightness(1.6) saturate(1.3);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: brightness(1) saturate(1);
}