/* base.css — Reset + Design Tokens for vseizusa.com
   Art direction: Warm editorial blog → Tinkoff Journal meets The Verge
   Palette: warm off-white (#FAFAF7) + rich teal (#1A6B5C) + warm coral (#E8634A)
   Typography: Source Serif 4 (display) + Inter (body) — editorial gravitas with clean readability
   Density: spacious editorial */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -moz-text-size-adjust: none;
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  hanging-punctuation: first last;
  scroll-padding-top: 5rem;
}

:root {
  /* Type Scale */
  --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-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* 4px Spacing System */
  --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;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Colors — Warm Editorial Palette */
  --color-bg:             #FAFAF7;
  --color-surface:        #FFFFFF;
  --color-surface-2:      #F5F5F0;
  --color-surface-offset: #F0EDE8;
  --color-divider:        #E5E2DC;
  --color-border:         #D4D1CA;

  /* Text */
  --color-text:           #1C1C1E;
  --color-text-muted:     #6B7280;
  --color-text-faint:     #9CA3AF;
  --color-text-inverse:   #FFFFFF;

  /* Primary — Rich Teal */
  --color-primary:        #1A6B5C;
  --color-primary-hover:  #15584C;
  --color-primary-active: #0F443B;
  --color-primary-light:  #E6F4F1;

  /* Secondary — Warm Coral */
  --color-coral:          #E8634A;
  --color-coral-hover:    #D4533B;
  --color-coral-active:   #C0432C;
  --color-coral-light:    #FFF0EC;

  /* Shadows (tone-matched warm) */
  --shadow-sm: 0 1px 3px rgba(28, 28, 30, 0.04), 0 1px 2px rgba(28, 28, 30, 0.06);
  --shadow-md: 0 4px 12px rgba(28, 28, 30, 0.06), 0 2px 4px rgba(28, 28, 30, 0.04);
  --shadow-lg: 0 12px 32px rgba(28, 28, 30, 0.08), 0 4px 8px rgba(28, 28, 30, 0.04);
  --shadow-hover: 0 8px 24px rgba(28, 28, 30, 0.1), 0 4px 8px rgba(28, 28, 30, 0.06);

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 250ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 400ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 680px;
  --content-default: 960px;
  --content-wide: 1200px;
}

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 {
  font-family: var(--font-display);
  text-wrap: balance;
  line-height: 1.2;
  font-weight: 700;
}
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection {
  background: rgba(26, 107, 92, 0.15);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

button { cursor: pointer; background: none; border: none; }
table { border-collapse: collapse; width: 100%; }

a, button, [role="button"], [role="link"], input, textarea, select {
  transition: color var(--transition-fast),
              background var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast),
              transform var(--transition-fast);
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.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;
}