/*
 * SplitLayer Marketing Site — Base styles, typography, resets
 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
@import 'tokens.css';

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

html {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  color-scheme: light;
}

body {
  background: var(--sl-bg-surface);
  color: var(--sl-text-primary);
}

img, svg { display: block; max-width: 100%; }
a { color: var(--sl-text-link); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }

/* ── Typography scale ──────────────────────────────────── */

.sl-display {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--sl-text-heading);
}

.sl-heading-1 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--sl-text-heading);
}

.sl-heading-2 {
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--sl-text-heading);
}

.sl-heading-3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--sl-text-heading);
}

.sl-body-lg {
  font-size: 18px;
  line-height: 1.7;
  color: var(--sl-text-secondary);
}

.sl-body {
  font-size: 16px;
  line-height: 1.6;
  color: var(--sl-text-secondary);
}

.sl-body-sm {
  font-size: 14px;
  line-height: 1.5;
  color: var(--sl-text-secondary);
}

/* ── Gradient text ─────────────────────────────────────── */
.sl-gradient-text {
  background: linear-gradient(135deg, var(--sl-accent) 0%, var(--sl-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Utility ───────────────────────────────────────────── */
.sl-container {
  max-width: var(--sl-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

@media (max-width: 640px) {
  .sl-container { padding: 0 16px; }
}

.sl-text-center { text-align: center; }
.sl-visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ── Scroll-reveal animation ───────────────────────────── */
.sl-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.sl-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.sl-reveal-delay-1 { transition-delay: 0.1s; }
.sl-reveal-delay-2 { transition-delay: 0.2s; }
.sl-reveal-delay-3 { transition-delay: 0.3s; }
.sl-reveal-delay-4 { transition-delay: 0.4s; }