/* ==========================================================================
   HellSpin — Design tokens (CSS Custom Properties)
   ========================================================================== */
:root {
  /* Colors */
  --color-bg-primary: #070b1d;
  --color-bg-dark: #101528;
  --color-accent-light: #ffc21f;
  --color-white: #ffffff;
  --color-btn-accent-start: #ff5a4d;
  --color-btn-accent-end: #ef3438;
  --gradient-btn-accent: linear-gradient(180deg, var(--color-btn-accent-start) 0%, var(--color-btn-accent-end) 100%);
  --color-btn-secondary-border: #ffc21f;
  --color-text-primary: #d4c5b1;
  --color-heading-gold: #ffd32a;
  --color-text-on-light-btn: #1a1420;
  --color-danger: #ef3438;

  /* Typography */
  --font-family-base: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-black: 800;

  --fs-base: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
  --fs-small: clamp(0.75rem, 0.7rem + 0.2vw, 0.875rem);
  --fs-h1: clamp(2rem, 1.6rem + 2vw, 2.75rem);
  --fs-h2: clamp(1.625rem, 1.4rem + 1vw, 2rem);
  --fs-h3: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --line-height-base: 1.6;

  /* Spacing */
  --space-section: clamp(2.5rem, 2rem + 2vw, 3.75rem);
  --space-card-gap: 1.25rem;
  --space-paragraph-gap: 1.25rem;
  --space-h2-text-gap: 1.25rem;
  --space-h3-text-gap: 1rem;
  --space-faq-gap: 1rem;
  --space-card-padding: 1.5rem;

  /* Layout */
  --container-max-width: 1440px;
  --container-padding-inline: clamp(1rem, 4vw, 2.5rem);
  --radius-card: 6px;
  --border-card: none;

  /* Effects */
  --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.35);
  --shadow-header: 0 4px 20px rgba(0, 0, 0, 0.45);
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;

  --z-header: 100;
  --z-toc: 20;
  --z-to-top: 90;
  --z-overlay: 110;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.01ms;
    animation-iteration-count: 1;
    transition-duration: 0.01ms;
  }
}