/* =========================================================================
   Peek — design tokens, reset, base typography
   ========================================================================= */

:root {
  /* Surfaces: cool charcoal / ink, layered from deepest to raised */
  --ink-950: #08090b;
  --ink-900: #0c0e11;
  --ink-880: #101317;
  --ink-850: #14181d;
  --ink-800: #191e24;
  --ink-750: #1f252c;
  --ink-700: #262d35;

  /* Hairlines */
  --line: #232a32;
  --line-soft: #1b2128;
  --line-strong: #323b45;

  /* Text: warm off-white against cool ink */
  --text: #f4f0e8;
  --text-dim: #b9c0c8;
  --text-mute: #8c959f;
  /* Lightened so 0.78rem hint text still clears 4.5:1 on the raised surfaces. */
  --text-faint: #828c96;

  /* Accent: signal lime + cool teal support */
  --acid: #ccff4d;
  --acid-bright: #dcff85;
  --acid-deep: #a8d62c;
  --acid-ink: #10140a;
  --teal: #46dfd2;
  --amber: #ffb648;

  --acid-glow: rgba(204, 255, 77, 0.16);
  --acid-line: rgba(204, 255, 77, 0.34);

  /* Type */
  --font-display: "Space Grotesk", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Mono", "Consolas", ui-monospace, monospace;

  /* Rhythm */
  --shell: 1200px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4.5rem, 9vw, 8.5rem);

  /* Radii — crisp, not pill-shaped */
  --r-xs: 3px;
  --r-sm: 5px;
  --r-md: 8px;
  --r-lg: 12px;

  --shadow-lift: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 18px 40px -24px rgba(0, 0, 0, 0.9);
  --shadow-window: 0 32px 70px -32px rgba(0, 0, 0, 0.95), 0 2px 0 rgba(255, 255, 255, 0.03) inset;

  --ease-out: cubic-bezier(0.16, 0.84, 0.34, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

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

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  min-height: 100%;
  background: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  font-feature-settings: "cv05" 1, "ss01" 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button {
  background: none;
  border: 0;
  cursor: pointer;
}

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

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

/* ---------- Focus ---------- */

:focus-visible {
  outline: 2px solid var(--acid);
  outline-offset: 3px;
  border-radius: var(--r-xs);
}

:focus:not(:focus-visible) {
  outline: none;
}

::selection {
  background: var(--acid);
  color: var(--acid-ink);
}

/* ---------- Typography ---------- */

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.028em;
  text-wrap: balance;
}

h1 {
  font-size: clamp(2.6rem, 6.4vw, 4.6rem);
}

h2 {
  font-size: clamp(2rem, 4.2vw, 3.1rem);
}

h3 {
  font-size: clamp(1.15rem, 1.9vw, 1.4rem);
  letter-spacing: -0.018em;
}

p {
  text-wrap: pretty;
}

strong {
  font-weight: 600;
  color: var(--text);
}

/* ---------- Layout primitives ---------- */

.shell {
  width: min(100% - (var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.section {
  padding-block: var(--section-y);
  position: relative;
}

.section--tight {
  padding-block: clamp(3rem, 6vw, 5rem);
}

.rule {
  border: 0;
  border-top: 1px solid var(--line-soft);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 200;
  padding: 0.7rem 1.1rem;
  background: var(--acid);
  color: var(--acid-ink);
  font-weight: 650;
  font-size: 0.9rem;
  border-radius: var(--r-sm);
  transform: translateY(-160%);
  transition: transform 0.18s var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Shared text styles ---------- */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-mute);
}

.eyebrow__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0 3px var(--acid-glow);
  flex: none;
}

.lede {
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  line-height: 1.65;
  color: var(--text-dim);
  max-width: 56ch;
}

.section-head {
  display: grid;
  gap: 1rem;
  max-width: 60ch;
  margin-bottom: clamp(2.5rem, 5vw, 3.75rem);
}

.section-head--center {
  margin-inline: auto;
  text-align: center;
  justify-items: center;
}

/* ---------- Reveal animation ---------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
  transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}