/* ==========================================================================
   Reset + base
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

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

body {
  background: var(--bg-base);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  font-feature-settings: 'ss01', 'ss02', 'ss03';
  line-height: 1.55;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.005em;
}

/* ───────── Paper-like film grain — full-viewport overlay ───────── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-grain);
  /* Two-octave fractal noise — larger blobs (paper fibre) blended with finer grain.
     baseFrequency 0.65 with numOctaves=3 gives a visible "premium dark paper" feel,
     not the imperceptible film haze the previous 0.85/0.18 alpha was producing. */
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='320' height='320'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch' seed='3'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 0.36 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-size: 320px 320px;
  opacity: 0.85;
  mix-blend-mode: overlay;
}
@media (prefers-reduced-motion: reduce) { body::after { opacity: 0.55; } }

/* ───────── Soft vignette — subtle edge-darkening for "filmic" depth ───────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: radial-gradient(
    ellipse 120% 110% at 50% 40%,
    transparent 38%,
    rgba(0, 0, 0, 0.32) 78%,
    rgba(0, 0, 0, 0.55) 100%
  );
}
@media (max-width: 720px) {
  body::before { background: radial-gradient(ellipse 130% 100% at 50% 35%, transparent 45%, rgba(0,0,0,0.28) 80%, rgba(0,0,0,0.50) 100%); }
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
img, svg, canvas { display: block; max-width: 100%; }
input, button, textarea, select { font-family: inherit; }

::selection { background: var(--gold); color: #1A1408; }

/* Focus rings — accessibility */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

/* Utility text wrappers */
.mono { font-family: var(--font-mono); }
.display { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.025em; }
.gold { color: var(--gold); }
.muted { color: var(--text-3); }

/* Reveal animation primitives — IntersectionObserver toggles .is-visible.
   PROGRESSIVE-ENHANCEMENT SAFETY: by default, .reveal elements are FULLY
   VISIBLE. Only when JS has successfully loaded does it add `.js-ready` to
   <html>, which opts every .reveal into its hidden initial state. If JS
   fails to load or errors, the page renders normally — never blank. */
.reveal { opacity: 1; transform: none; transition:
  opacity var(--d-slow) var(--ease-out),
  transform var(--d-slow) var(--ease-out); }
.reveal-stagger > * { opacity: 1; transform: none; transition:
  opacity var(--d-slow) var(--ease-out),
  transform var(--d-slow) var(--ease-out); }

html.js-ready .reveal { opacity: 0; transform: translateY(24px); }
html.js-ready .reveal.is-visible { opacity: 1; transform: translateY(0); }
html.js-ready .reveal-stagger > * { opacity: 0; transform: translateY(20px); }
html.js-ready .reveal-stagger.is-visible > * { opacity: 1; transform: translateY(0); }
html.js-ready .reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 80ms; }
html.js-ready .reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 160ms; }
html.js-ready .reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 240ms; }
html.js-ready .reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 320ms; }
html.js-ready .reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 400ms; }
html.js-ready .reveal-stagger.is-visible > *:nth-child(7) { transition-delay: 480ms; }
html.js-ready .reveal-stagger.is-visible > *:nth-child(8) { transition-delay: 560ms; }

@media (prefers-reduced-motion: reduce) {
  html.js-ready .reveal, html.js-ready .reveal-stagger > * { opacity: 1; transform: none; }
}

/* Scrollbar — subtle on dark */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb { background: var(--border-2); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-3); }
