/* base.css — shared reset + tokens for both designs */
:root {
  --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);
  --text-hero: clamp(3rem, 0.5rem + 7vw, 7rem);

  --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;

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem;
  --radius-xl: 1rem; --radius-2xl: 1.5rem; --radius-full: 9999px;

  --content-narrow: 680px; --content-default: 1040px; --content-wide: 1240px;
  --transition: 220ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  min-height: 100dvh; line-height: 1.6;
  font-family: var(--font-body, sans-serif);
  font-size: var(--text-base);
  color: var(--color-text); background-color: var(--color-bg);
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
}

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: 1.12; }
p, li { text-wrap: pretty; }

: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 { color: inherit; }

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

/* ---- shared layout primitives ---- */
.container { width: min(100% - 2.5rem, var(--content-wide)); margin-inline: auto; }
.container-narrow { width: min(100% - 2.5rem, var(--content-narrow)); margin-inline: auto; }
.section { padding-block: clamp(var(--space-16), 8vw, var(--space-32)); }

/* scroll reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16,1,0.3,1); }
.reveal.in { opacity: 1; transform: none; }

/* skip link */
.skip-link {
  position: absolute; left: var(--space-4); top: var(--space-2); z-index: 1000;
  transform: translateY(-150%); padding: var(--space-2) var(--space-4);
  background: var(--color-primary); color: #fff; border-radius: var(--radius-md);
}
.skip-link:focus { transform: none; }

/* toast */
.toast {
  position: fixed; bottom: var(--space-6); left: 50%; transform: translateX(-50%) translateY(150%);
  z-index: 2000; padding: var(--space-3) var(--space-5); border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 600; box-shadow: 0 8px 30px rgba(0,0,0,.3);
  opacity: 0; transition: transform .4s cubic-bezier(0.16,1,0.3,1), opacity .4s ease; pointer-events: none;
  max-width: calc(100% - 2.5rem); text-align: center;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }