/* =============================================================
   BASE — Reset, CSS variables, typography defaults
   ============================================================= */

/* --- Reset -------------------------------------------------- */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, svg, video {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  line-height: var(--leading-tight);
  font-weight: var(--font-bold);
}

p { margin: 0; }

a {
  color: inherit;
  text-decoration: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
  padding: 0;
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

textarea {
  resize: vertical;
}

input, select, textarea, button {
  font-family: inherit;
  font-size: 100%;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- CSS Custom Properties (Design Tokens) ------------------ */

:root {
  /* Brand colors */
  --color-brand:       #14532d;
  --color-brand-hover: #166534;
  --color-brand-dark:  #0f3d21;
  --color-accent:      #4ade80;

  /* Text */
  --color-text:        #111827;
  --color-text-muted:  #6b7280;
  --color-text-light:  #9ca3af;

  /* Backgrounds */
  --color-bg:          #f8fafc;
  --color-bg-alt:      #f1f5f1;
  --color-card:        #ffffff;
  --color-white:       #ffffff;
  --color-border:      #e5e7eb;

  /* Font */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;

  /* Font sizes */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* Line heights */
  --leading-tight:   1.25;
  --leading-snug:    1.375;
  --leading-normal:  1.5;
  --leading-relaxed: 1.65;

  /* Font weights */
  --font-normal:    400;
  --font-medium:    500;
  --font-semibold:  600;
  --font-bold:      700;
  --font-extrabold: 800;

  /* Spacing scale */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Layout */
  --container-max:  1280px;
  --container-pad:  clamp(1rem, 4vw, 2rem);
  --nav-height:     72px;

  /* Border radius */
  --radius-sm:   4px;
  --radius:      8px;
  --radius-lg:   12px;
  --radius-xl:   20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.07);
  --shadow:    0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.10);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition:      200ms ease;
  --transition-slow: 350ms ease;
}