@tailwind base;
@tailwind components;
@tailwind utilities;

/* Design tokens exposed as CSS vars so Svelte component <style> blocks
   can use them without going through Tailwind. */
:root {
  /* S88-inspired hierarchy palette (mirrors EVOLV) */
  --color-helix-area: #0f52a5;
  --color-helix-process: #0c99d9;
  --color-helix-unit: #50a8d9;
  --color-helix-equipment: #86bbdd;
  --color-helix-control: #a9daee;

  /* Surfaces */
  --color-helix-bg: #07111d;
  --color-helix-bg-2: #0c1c30;
  --color-helix-bg-3: #122842;
  --color-helix-border: #1f3a5e;

  /* Ink */
  --color-helix-ink: #e6f1fb;
  --color-helix-ink-dim: #8fa6b8;
  --color-helix-ink-faint: #5b7388;

  /* Accent (helix glow / R&D signal) */
  --color-helix-accent: #4dd0c2;
  --color-helix-accent-2: #c084fc;

  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;
}

html,
body {
  background: var(--color-helix-bg);
  color: var(--color-helix-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv11', 'ss01', 'ss03';
}

/* Subtle radial vignette anchoring the landing page */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px 800px at 20% 0%, rgba(12, 153, 217, 0.18), transparent 60%),
    radial-gradient(900px 700px at 90% 20%, rgba(77, 208, 194, 0.12), transparent 60%),
    radial-gradient(700px 500px at 50% 100%, rgba(192, 132, 252, 0.08), transparent 60%);
  pointer-events: none;
  z-index: -1;
}

::selection {
  background: var(--color-helix-accent);
  color: var(--color-helix-bg);
}

/* Honour reduced-motion globally */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* Markdown body (for project + post detail pages) */
.prose-helix {
  color: var(--color-helix-ink);
  line-height: 1.7;
  font-size: 1.05rem;
}
.prose-helix h1,
.prose-helix h2,
.prose-helix h3 {
  color: var(--color-helix-ink);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-top: 2em;
  margin-bottom: 0.5em;
}
.prose-helix h1 { font-size: 2rem; }
.prose-helix h2 { font-size: 1.5rem; }
.prose-helix h3 { font-size: 1.2rem; }
.prose-helix p { margin: 1em 0; }
.prose-helix a {
  color: var(--color-helix-accent);
  text-decoration: underline;
  text-decoration-color: rgba(77, 208, 194, 0.4);
  text-underline-offset: 3px;
}
.prose-helix a:hover { text-decoration-color: var(--color-helix-accent); }
.prose-helix code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--color-helix-bg-2);
  padding: 0.15em 0.35em;
  border-radius: 4px;
  border: 1px solid var(--color-helix-border);
}
.prose-helix pre {
  background: var(--color-helix-bg-2);
  border: 1px solid var(--color-helix-border);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.9em;
  line-height: 1.5;
}
.prose-helix pre code { background: transparent; border: none; padding: 0; }
.prose-helix blockquote {
  border-left: 3px solid var(--color-helix-accent);
  padding-left: 1rem;
  color: var(--color-helix-ink-dim);
  margin: 1.5em 0;
}
.prose-helix ul, .prose-helix ol { padding-left: 1.5em; margin: 1em 0; }
.prose-helix li { margin: 0.4em 0; }
.prose-helix img { border-radius: 8px; max-width: 100%; }
.prose-helix hr {
  border: none;
  border-top: 1px solid var(--color-helix-border);
  margin: 2em 0;
}