/* ============================================
   SHEFFIELD BOILER — Design Tokens & Base
   Colour: warm red/flame accent, dark charcoal
   ============================================ */

:root {
  --color-bg: #faf9f7;
  --color-surface: #ffffff;
  --color-surface-2: #f3f1ee;
  --color-surface-offset: #ebe8e3;
  --color-border: #d8d4cd;
  --color-divider: #e2ddd6;

  --color-text: #1a1410;
  --color-text-muted: #5a5148;
  --color-text-faint: #a89f94;
  --color-text-inverse: #ffffff;

  /* Primary — deep charcoal/slate */
  --color-primary: #2c2420;
  --color-primary-hover: #1a1410;
  --color-primary-active: #0e0b09;
  --color-primary-highlight: #e8e4e0;

  /* Accent — flame red/orange */
  --color-accent: #c0392b;
  --color-accent-hover: #a93226;
  --color-accent-active: #922b21;
  --color-accent-highlight: #fce8e6;

  /* Warm orange for secondary CTAs */
  --color-warm: #e67e22;
  --color-warm-hover: #ca6f1e;

  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-error: #c0392b;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(26,20,16,0.07);
  --shadow-md: 0 4px 16px rgba(26,20,16,0.10);
  --shadow-lg: 0 12px 36px rgba(26,20,16,0.14);

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-hero: clamp(2.5rem, 1rem + 5vw, 5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;

  --font-display: 'Plus Jakarta Sans', 'Helvetica Neue', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;
}


*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; scroll-behavior: smooth; scroll-padding-top: var(--space-16); }
body { min-height: 100dvh; line-height: 1.6; font-family: var(--font-body); font-size: var(--text-base); color: var(--color-text); background-color: var(--color-bg); }
img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.15; font-family: var(--font-display); }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }
::selection { background: rgba(192,57,43,0.15); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; } }
button { cursor: pointer; background: none; border: none; }
a, button, [role='button'] { transition: color var(--transition), background var(--transition), border-color var(--transition), box-shadow var(--transition), opacity var(--transition); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }