/* ============================================================
   Radiant Corporation — Design Tokens
   ------------------------------------------------------------
   Single source of truth for ALL colors and fonts on the site.
   style.css and design.html consume only these variables —
   re-theme the entire site by editing this file alone.
   ============================================================ */

:root {
  /* ----------------------------------------------------------
     Brand palette (premium aerospace theme)
     ---------------------------------------------------------- */
  --navy: #081B33;        /* Midnight Navy — header, hero, footer, dark bands */
  --navy-2: #0B2444;      /* Navy raised/hover variant */
  --blue: #295D8F;        /* Aerospace Blue — primary buttons, links, emphasis */
  --blue-bright: #3A78B5; /* Aerospace Blue hover state */
  --blue-sky: #7FB0DC;    /* Sky Blue — tagline accent on navy backgrounds */
  --silver: #C8CED4;      /* Titanium Silver — secondary text on dark */
  --graphite: #30343A;    /* Graphite — certification band, industrial sections */
  --gold: #A97C2F;        /* Heritage Gold — eyebrows, rules, accents (use sparingly) */
  --gold-light: #C99B4E;  /* Heritage Gold light — stats, checkmarks on dark */
  --titanium: #E8EBEE;    /* Light Titanium Gray — alternate section background */
  --white: #FFFFFF;

  /* ----------------------------------------------------------
     RGB triplets — for alpha compositing with rgba(var(--x-rgb), a).
     Keep in sync with the hex values above.
     ---------------------------------------------------------- */
  --navy-rgb: 8, 27, 51;
  --white-rgb: 255, 255, 255;
  --silver-rgb: 200, 206, 212;
  --gold-light-rgb: 201, 155, 78;
  --blue-sky-rgb: 127, 176, 220;

  /* ----------------------------------------------------------
     Text colors
     ---------------------------------------------------------- */
  --ink: #232730;         /* default body text on light */
  --text-muted: #4A5058;  /* card body copy on light */
  --text-lead: #3C424B;   /* lead paragraphs on light */

  /* ----------------------------------------------------------
     Borders & shadows
     ---------------------------------------------------------- */
  --border: #E2E6EA;      /* hairlines on light backgrounds */
  --shadow: 0 10px 30px rgba(8, 27, 51, 0.10);   /* lifted cards */
  --shadow-card: 0 1px 3px rgba(8, 27, 51, 0.08); /* resting cards */
  --shadow-header: 0 2px 18px rgba(0, 0, 0, 0.35); /* scrolled header */

  /* ----------------------------------------------------------
     Typography
     ---------------------------------------------------------- */
  /* UI sans — all interface and body text */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  /* Brand serif — wordmark and hero display only */
  --font-brand: "Palatino", "Palatino Linotype", "Book Antiqua", Georgia, serif;

  /* ----------------------------------------------------------
     Layout
     ---------------------------------------------------------- */
  --max: 1180px;
  --radius: 6px;
}