/* Alix — Design Tokens. "The engineer's console": IBM Plex superfamily, a
   monospace machine-voice, blue as a signal, hairline traces + chamfered chip
   corners derived from the microchip mark. Brand-locked, used on every page. */
:root {
  /* Brand */
  --alix-blue-bright: #2ba4ff; /* beam */
  --alix-blue: #0f62fe; /* signal (== IBM blue) */
  --alix-blue-deep: #0a357a;
  --alix-silver: #c7d6e6;
  --white: #ffffff;

  /* Engineered glass base */
  --bg-0: #ecf2f8; /* cool paper */
  --bg-1: #f6f9fc;
  --glass-bg: rgba(255, 255, 255, 0.5);
  --glass-bg-strong: rgba(255, 255, 255, 0.74);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-blur: 16px;
  --glow: 0 6px 30px rgba(15, 98, 254, 0.14);
  --shadow-soft: 0 8px 26px rgba(10, 53, 122, 0.09);

  /* Hairline traces (the engineered structure) */
  --hair: rgba(15, 98, 254, 0.16);
  --trace: rgba(15, 98, 254, 0.08);

  /* Text */
  --text-strong: #0b1a33; /* ink */
  --text: #33475b;
  --text-muted: #6b7c93; /* steel */

  /* Accent tags (service categories — secondary) */
  --tag-green: #16a34a;
  --tag-purple: #7c3aed;
  --tag-orange: #f59e0b;
  --tag-blue: #2563eb;

  --radius: 12px;
  --radius-sm: 7px;
  --radius-lg: 18px;
  --chamfer: 16px; /* machined chip corner */
  --gradient-brand: linear-gradient(135deg, var(--alix-blue-bright), var(--alix-blue-deep));
  --gradient-metal: linear-gradient(135deg, #2ba4ff 0%, #6aa8d8 45%, #c7d6e6 100%);

  /* Layout */
  --container: 1200px;
  --nav-h: 72px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  /* Type — IBM Plex superfamily. --font-mono is the "machine voice". */
  --font-head: 'IBM Plex Sans', 'IBM Plex Sans Arabic', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans', 'IBM Plex Sans Arabic', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'IBM Plex Sans Arabic', ui-monospace, monospace;
}

/* Arabic / RTL uses the Arabic typeface for heads & body; labels stay mono */
html[dir='rtl'] {
  --font-head: 'IBM Plex Sans Arabic', 'IBM Plex Sans', system-ui, sans-serif;
  --font-body: 'IBM Plex Sans Arabic', 'IBM Plex Sans', system-ui, sans-serif;
}

/* ── Dark theme — the console at night ───────────────────────────────
   Applies when the device prefers dark (unless forced light), OR when the
   user forces dark via the settings toggle (html[data-theme="dark"]). */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg-0: #0a1120;
    --bg-1: #0c1526;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-strong: rgba(18, 30, 52, 0.7);
    --glass-border: rgba(120, 170, 255, 0.16);
    --glow: 0 6px 32px rgba(43, 164, 255, 0.26);
    --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.5);
    --hair: rgba(120, 170, 255, 0.2);
    --trace: rgba(120, 170, 255, 0.09);
    --text-strong: #eef4fe;
    --text: #c2cfe2;
    --text-muted: #8597b1;
  }
}
html[data-theme='dark'] {
  --bg-0: #0a1120;
  --bg-1: #0c1526;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-bg-strong: rgba(18, 30, 52, 0.7);
  --glass-border: rgba(120, 170, 255, 0.16);
  --glow: 0 6px 32px rgba(43, 164, 255, 0.26);
  --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.5);
  --hair: rgba(120, 170, 255, 0.2);
  --trace: rgba(120, 170, 255, 0.09);
  --text-strong: #eef4fe;
  --text: #c2cfe2;
  --text-muted: #8597b1;
}