/* ==========================================================================
   Base: reset, typography styles, layout primitives
   ========================================================================== */

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 24px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

img {
  height: auto;
}

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

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

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

h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  text-wrap: balance;
}

p,
li,
dd,
blockquote {
  text-wrap: pretty;
}

em,
i {
  font-style: normal;
}

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

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

/* ---- Skip link ---- */
.skip-link {
  position: fixed;
  top: var(--sp-200);
  left: var(--sp-200);
  z-index: 200;
  padding: var(--sp-75) var(--sp-100);
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: var(--r-full);
  transform: translateY(-200%);
  transition: transform var(--dur) var(--ease);
}

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

/* ==========================================================================
   Text styles (named, sizes from the Tailwind scale)
   Headings follow the reference: Montserrat in light weights.
   ========================================================================== */

.heading-1 { font-size: 60px; line-height: 60px; font-weight: 300; letter-spacing: -0.02em; }
.heading-2 { font-size: 48px; line-height: 48px; font-weight: 300; letter-spacing: -0.02em; }
.heading-3 { font-size: 36px; line-height: 40px; font-weight: 300; letter-spacing: -0.01em; }
.heading-4 { font-size: 30px; line-height: 36px; font-weight: 300; letter-spacing: -0.01em; }
.heading-5 { font-size: 24px; line-height: 32px; font-weight: 400; }
.heading-6 { font-size: 20px; line-height: 28px; font-weight: 500; }

.title-1 { font-size: 20px; line-height: 28px; font-weight: 500; }
.title-2 { font-size: 18px; line-height: 28px; font-weight: 500; }
.title-3 { font-size: 16px; line-height: 24px; font-weight: 500; }
.title-4 { font-size: 14px; line-height: 20px; font-weight: 500; }
.title-5 { font-size: 12px; line-height: 16px; font-weight: 500; }

.body-1 { font-size: 16px; line-height: 24px; font-weight: 600; }
.body-2 { font-size: 16px; line-height: 24px; font-weight: 500; }
.body-3 { font-size: 16px; line-height: 24px; font-weight: 400; }
.body-4 { font-size: 14px; line-height: 20px; font-weight: 600; }
.body-5 { font-size: 14px; line-height: 20px; font-weight: 500; }
.body-6 { font-size: 14px; line-height: 20px; font-weight: 400; }

.button-lg { font-size: 18px; line-height: 28px; font-weight: 600; }
.button-md { font-size: 16px; line-height: 24px; font-weight: 600; }
.button-sm { font-size: 14px; line-height: 20px; font-weight: 600; }
.button-xsm { font-size: 12px; line-height: 16px; font-weight: 600; }

.caption-1 { font-size: 14px; line-height: 20px; font-weight: 500; }
.caption-2 { font-size: 14px; line-height: 20px; font-weight: 400; }
.caption-3 { font-size: 12px; line-height: 16px; font-weight: 600; }
.caption-4 { font-size: 12px; line-height: 16px; font-weight: 500; }
.caption-5 { font-size: 12px; line-height: 16px; font-weight: 400; }

/* Display step for the hero on large screens (text-7xl) */
.display { font-size: 72px; line-height: 72px; font-weight: 200; letter-spacing: -0.03em; }

/* Mono readouts (numeric UI only) */
.mono {
  font-family: var(--font-mono);
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.text-2 { color: var(--text-2); }
.text-3 { color: var(--text-3); }
.text-accent { color: var(--accent); }

@media (max-width: 1024px) {
  .display { font-size: 60px; line-height: 60px; }
  .heading-1 { font-size: 48px; line-height: 48px; }
  .heading-2 { font-size: 36px; line-height: 40px; }
}

@media (max-width: 640px) {
  .display { font-size: 36px; line-height: 40px; letter-spacing: -0.02em; }
  .heading-1 { font-size: 36px; line-height: 40px; }
  .heading-2 { font-size: 30px; line-height: 36px; }
  .heading-3 { font-size: 30px; line-height: 36px; }
  .heading-4 { font-size: 24px; line-height: 32px; }
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--sp-900);
}

.section--tight {
  padding-block: var(--sp-700);
}

@media (max-width: 640px) {
  .section { padding-block: var(--sp-700); }
  .section--tight { padding-block: var(--sp-600); }
}

.section-head {
  display: grid;
  gap: var(--sp-200);
  max-width: 680px;
  margin-bottom: var(--sp-700);
}

.section-head--split {
  max-width: none;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: var(--sp-300);
}

@media (max-width: 768px) {
  .section-head--split { grid-template-columns: 1fr; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-75);
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: var(--sp-300);
  height: 1px;
  background: currentColor;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

/* Gradient text: the only place a gradient is allowed */
.gradient-text {
  background: linear-gradient(90deg, #ffffff 0%, #9b9b9b 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Hairline grid that sits behind sections (futuristic blueprint feel) */
.grid-lines {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 96px 96px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 75%);
}