/* ==========================================================================
   Synvoca — Fonts, Reset, Base Typography, Layout Primitives
   ========================================================================== */

/* ---- Font faces (self-hosted, greek + latin-ext) --------------------- */

@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-greek-400.woff2") format("woff2");
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/inter-latin-ext-400.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/inter-greek-500.woff2") format("woff2");
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/inter-latin-ext-500.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-greek-600.woff2") format("woff2");
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../fonts/inter-latin-ext-600.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/inter-greek-700.woff2") format("woff2");
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../fonts/inter-latin-ext-700.woff2") format("woff2");
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("../fonts/inter-greek-800.woff2") format("woff2");
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: "Inter";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("../fonts/inter-latin-ext-800.woff2") format("woff2");
}

@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-greek-400.woff2") format("woff2");
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-latin-ext-400.woff2") format("woff2");
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-greek-500.woff2") format("woff2");
  unicode-range: U+0370-03FF, U+1F00-1FFF;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../fonts/jetbrains-mono-latin-ext-500.woff2") format("woff2");
}

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

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

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

@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;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-fg);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

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

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

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

h1,
h2,
h3,
h4,
p {
  margin: 0;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* ---- Base typography ---------------------------------------------------- */

h1,
h2,
h3,
h4 {
  font-weight: 600;
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-tight);
}

h1 {
  font-size: var(--fs-h1);
  font-weight: 700;
  line-height: var(--lh-tight);
}

h2 {
  font-size: var(--fs-h2);
}

h3 {
  font-size: var(--fs-h3);
}

h4 {
  font-size: var(--fs-h4);
}

.eyebrow {
  display: inline-block;
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--color-fg-secondary);
}

.section--inverse .eyebrow {
  color: var(--color-inverse-fg-secondary);
}

.lead {
  font-size: var(--fs-body-lg);
  color: var(--color-fg-secondary);
  line-height: var(--lh-body);
}

.section--inverse .lead {
  color: var(--color-inverse-fg-secondary);
}

.mono {
  font-family: var(--font-mono);
  font-feature-settings: "tnum" 1;
}

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

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

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

.section--alt {
  background: var(--color-bg-alt);
}

.section--inverse {
  background: var(--color-inverse-bg);
  color: var(--color-inverse-fg);
}

.section--border-top {
  border-top: 1px solid var(--color-border);
}

.section--inverse.section--border-top {
  border-top: 1px solid var(--color-inverse-border);
}

.section-head {
  max-width: 640px;
  margin-bottom: var(--space-8);
}

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

.section-head > .eyebrow {
  margin-bottom: var(--space-3);
}

.section-head > h2 {
  margin-top: var(--space-3);
}

.section-head > .lead {
  margin-top: var(--space-4);
}

.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;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  background: var(--color-inverse-bg);
  color: var(--color-inverse-fg);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--duration-base) var(--ease);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ---- Scroll reveal -------------------------------------------------------- */

[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-slow) var(--ease), transform var(--duration-slow) var(--ease);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

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