/* ============================================================
   Floaty Base — reset + primitives shared by all components.
   ============================================================ */

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  font-family: var(--font-sans);
  font-size: var(--step-0);
  line-height: var(--leading-body);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Ambient cinematic backdrop: subtle grain + top halo */
body::before {
  content: "";
  position: fixed; inset: 0;
  background: var(--grad-halo);
  pointer-events: none; z-index: 0;
  opacity: 0.9;
}

img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

h1, h2, h3 { line-height: var(--leading-tight); letter-spacing: var(--tracking-tight); font-weight: 800; }

/* ---- Layout primitives ------------------------------------ */
.container { width: var(--container-w); margin-inline: auto; position: relative; z-index: 1; }
.section   { padding-block: var(--section-y); position: relative; }
.stack > * + * { margin-top: var(--space-m); }

/* ---- Type primitives -------------------------------------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-size: var(--step--1); font-weight: 600;
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--ink-soft);
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px;
  background: var(--grad-brand);
}
.display { font-size: var(--step-4); }
.headline { font-size: var(--step-3); }
.title    { font-size: var(--step-2); }
.lede { font-size: var(--step-1); color: var(--ink-soft); font-weight: 400; max-width: 40ch; }
.muted { color: var(--ink-mute); }

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

/* ---- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5em;
  padding: 0.9em 1.5em; border-radius: var(--r-pill);
  font-weight: 600; font-size: var(--step-0);
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast);
  will-change: transform;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  color: #0b0616; background: var(--grad-brand);
  box-shadow: var(--glow-violet);
}
.btn-primary:hover { box-shadow: var(--glow-violet), 0 10px 30px -8px rgba(123,92,255,0.6); }
.btn-ghost {
  color: var(--ink); background: var(--surface);
  border: 1px solid var(--hairline-2); backdrop-filter: blur(8px);
}
.btn-ghost:hover { background: var(--surface-2); }

/* ---- Glass surface ---------------------------------------- */
.glass {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--r-l);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
}
.glass::before { /* top sheen */
  content: ""; position: absolute; inset: 0;
  background: var(--grad-sheen); pointer-events: none;
}

/* ---- Scroll-reveal states (driven by motion.js) ----------- */
[data-reveal] {
  opacity: 0; transform: translateY(28px);
  transition: opacity var(--dur-med) var(--ease-out), transform var(--dur-med) var(--ease-out);
}
[data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.08s; }
[data-reveal-delay="2"] { transition-delay: 0.16s; }
[data-reveal-delay="3"] { transition-delay: 0.24s; }
[data-reveal-delay="4"] { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}