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

html {
  -webkit-text-size-adjust: 100%;
}

/* Prevent iOS/Android elastic horizontal rubber-band from decorative
   orbs and 3D-tilt cards nudging a hair past the viewport. `clip` stops
   the overscroll without creating a scroll container, so position:sticky
   and smooth scrolling keep working. */
html,
body {
  overflow-x: clip;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--text-secondary);
  background-color: var(--surface-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

ul,
ol {
  list-style: none;
}

/* Skip to content */
.skip-link {
  position: absolute;
  top: -9999px;
  left: var(--space-md);
  z-index: var(--z-modal);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* Focus-visible for keyboard navigation */
:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 2px;
}

/* Remove outline for mouse/touch clicks */
:focus:not(:focus-visible) {
  outline: none;
}

/* Typography - all headings light on dark */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-tight);
  color: var(--text-primary);
  letter-spacing: var(--ls-tight);
}

h1 {
  font-size: var(--fs-h1);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-tighter);
}
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p + p {
  margin-top: var(--space-lg);
}

.text-gradient {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-muted { color: var(--text-tertiary); }
.text-white { color: var(--color-white); }

/* Selection */
::selection {
  background: rgba(var(--color-primary-rgb), 0.3);
  color: var(--color-white);
}

/* =============================================
   NOISE / GRAIN TEXTURE OVERLAY
   Fixed, pointer-events-none, never on scrolling content
   ============================================= */
.noise-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-noise);
  pointer-events: none;
  opacity: 0.028;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 200px;
}