/* ==========================================================================
   Base — reset, typography, layout primitives, utilities
   ========================================================================== */

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

* {
  margin: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 12px);
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

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

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--text);
}

h1 {
  font-size: var(--fs-hero);
}
h2 {
  font-size: var(--fs-3xl);
}
h3 {
  font-size: var(--fs-xl);
}

p {
  color: var(--text-muted);
  line-height: var(--lh-normal);
}

:focus-visible {
  outline: 3px solid var(--brand-violet);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: rgba(109, 94, 246, 0.24);
}

/* ---- Layout primitives ---- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

.container--narrow {
  max-width: var(--container-narrow);
}

.section {
  padding-block: var(--space-9);
}

.section--tight {
  padding-block: var(--space-8);
}

.grid {
  display: grid;
  gap: var(--space-5);
}

/* ---- Section headers ---- */
.section-head {
  max-width: 720px;
  margin-bottom: var(--space-7);
}

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--brand-violet-600);
  margin-bottom: var(--space-3);
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--gradient-brand);
}

.section-head--center .eyebrow {
  justify-content: center;
}

.section-head p {
  font-size: var(--fs-md);
  margin-top: var(--space-4);
}

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

/* ---- Screen-reader only ---- */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -60px;
  left: var(--space-4);
  z-index: 200;
  padding: var(--space-3) var(--space-4);
  background: var(--ink-950);
  color: var(--white);
  border-radius: var(--radius-sm);
  transition: top var(--dur) var(--ease-out);
}
.skip-link:focus {
  top: var(--space-4);
}

/* ---- Scroll-reveal animation ---- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out), transform var(--dur-slow) var(--ease-out);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}
[data-reveal-delay="1"] {
  transition-delay: 80ms;
}
[data-reveal-delay="2"] {
  transition-delay: 160ms;
}
[data-reveal-delay="3"] {
  transition-delay: 240ms;
}
[data-reveal-delay="4"] {
  transition-delay: 320ms;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}