/* ============================================================
   variables.css — Design Tokens
   ============================================================ */

:root {

  /* ── Colors ─────────────────────────────────────────────── */
  /* BTR Systems inspired: stark whites, light grays, dark slates */
  --color-black: #1A1A1A;
  /* Primary text / dark backgrounds */
  --color-white: #FFFFFF;
  /* Primary background */
  --color-gray-50: #FAFAFA;
  /* Off-white for section separation */
  --color-gray-100: #F2F2F2;
  /* Light gray for borders/cards */
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  /* Subtle text */
  --color-gray-600: #6B7280;
  --color-gray-700: #4D5156;
  /* Logo/header slate */
  --color-gray-800: #374151;
  --color-gray-900: #1F2937;
  --color-primary: #1A1A1A;

  /* Premium Accent Palette — Sharp, professional */
  --color-accent: #1A1A1A;
  /* BTR relies on dark slate/black as primary action color */
  --color-accent-dark: #000000;
  --color-accent-light: #F2F2F2;

  /* Gradients - Flattened out for modern architectural look */
  --gradient-primary: none;
  --gradient-dark: none;
  --gradient-glow: none;

  /* ── Typography ─────────────────────────────────────────── */
  /* Upgrading to premium modern fonts (Montserrat like BTR) */
  --font-display: 'Montserrat', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-secondary: 'Inter', sans-serif;

  /* ── Spacing ────────────────────────────────────────────── */
  --space-xs: 0.5rem;
  /* 8px */
  --space-sm: 0.875rem;
  /* 14px */
  --space-md: 1.5rem;
  /* 24px */
  --space-lg: 3rem;
  /* 48px */
  --space-xl: 4.5rem;
  /* 72px */
  --space-2xl: 6.5rem;
  /* 104px */
  --space-3xl: 8rem;
  /* 128px */

  /* ── Layout ─────────────────────────────────────────────── */
  --max-width: 1540px;
  --max-width-text: 720px;
  --header-height: 110px;

  /* ── Borders & Radius (Architectural sharp lines) ───────── */
  --radius-circle: 50%;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 100px;
  /* Flattened out the pills to sharp rectangles */

  /* ── Shadows ────────────────────────────────────────────── */
  --shadow-sm: none;
  --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.04);
  /* Extremely subtle */
  --shadow-hover: 0 16px 50px rgba(0, 0, 0, 0.08);
  --shadow-glow: none;

  /* ── Transitions ────────────────────────────────────────── */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.15s ease;
}

@media (max-width: 1024px) {
  :root {
    --header-height: 72px;
  }
}

@media (max-width: 768px) {
  :root {
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 5rem;
  }
}