:root {
  --brand-700: #6f27e9;
  --brand-600: #842fee;
  --brand-500: #a855f7;
  --brand-400: #c084fc;
  --brand-300: #d8b4fe;
  --brand-200: #ead4ff;
  --brand-100: #f5eaff;
  --ink: #171419;
  --ink-soft: #4f4854;
  --ink-muted: #786f7d;
  --paper: #fbfafc;
  --paper-warm: #f7f4f8;
  --surface: #ffffff;
  --surface-soft: #f3eff5;
  --line: #e5dfe8;
  --line-strong: #d4cad8;
  --dark: #17131a;
  --dark-raised: #211a25;
  --dark-line: #362c3c;
  --success: #24a66b;
  --warning: #f59e0b;
  --font-sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Avenir Next", Avenir, "Segoe UI", ui-sans-serif, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --shadow-sm: 0 8px 30px rgba(41, 25, 48, 0.07);
  --shadow-lg: 0 30px 90px rgba(49, 25, 60, 0.14);
  --shell: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 92px;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--brand-300);
  color: #28132f;
}

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

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
}

svg {
  display: block;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

:focus-visible {
  outline: 3px solid rgba(168, 85, 247, 0.55);
  outline-offset: 3px;
}

.page-shell {
  width: min(calc(100% - 48px), var(--shell));
  margin-inline: auto;
}

.sr-only {
  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: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  transform: translateY(-140%);
  padding: 10px 16px;
  border-radius: 10px;
  background: var(--ink);
  color: white;
  font-weight: 700;
  transition: transform 180ms ease;
}

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

.site-header {
  position: fixed;
  z-index: 100;
  top: 16px;
  right: 0;
  left: 0;
  width: min(calc(100% - 32px), 1260px);
  margin-inline: auto;
  border: 1px solid rgba(220, 212, 224, 0.82);
  border-radius: 18px;
  background: rgba(251, 250, 252, 0.82);
  box-shadow: 0 12px 40px rgba(42, 26, 49, 0.08);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
}

.header-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 64px;
  padding: 0 10px 0 17px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: max-content;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 750;
  letter-spacing: -0.04em;
}

.brand-mark-shell {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid #eadcf1;
  border-radius: 11px;
  background: white;
  box-shadow: 0 5px 15px rgba(105, 42, 145, 0.08);
}

.brand-mark-shell svg {
  width: 27px;
  height: 27px;
}

.brand-name {
  transform: translateY(-1px);
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 4px;
  border-radius: 13px;
  background: rgba(239, 235, 241, 0.7);
}

.desktop-nav a {
  padding: 7px 14px;
  border-radius: 10px;
  color: var(--ink-soft);
  font-size: 13px;
  font-weight: 650;
  transition: background 160ms ease, color 160ms ease;
}

.desktop-nav a:hover {
  background: white;
  color: var(--ink);
}

.header-github {
  justify-self: end;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 0;
  border-radius: 11px;
  background: var(--surface-soft);
  cursor: pointer;
}

.menu-button svg {
  width: 21px;
}

.mobile-nav {
  display: none;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 21px;
  border: 1px solid transparent;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 730;
  line-height: 1;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease,
    border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button svg {
  width: 18px;
  height: 18px;
}

.button-small {
  min-height: 44px;
  padding-inline: 16px;
  border-radius: 11px;
  font-size: 13px;
}

.button-primary {
  background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
  box-shadow: 0 12px 28px rgba(132, 47, 238, 0.24), inset 0 1px rgba(255, 255, 255, 0.35);
  color: white;
}

.button-primary:hover {
  box-shadow: 0 16px 34px rgba(132, 47, 238, 0.3), inset 0 1px rgba(255, 255, 255, 0.35);
}

.button-ghost {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.button-ghost:hover {
  border-color: var(--line-strong);
  background: white;
  box-shadow: var(--shadow-sm);
}

.button-dark {
  background: var(--ink);
  color: white;
}

.button-light {
  background: white;
  color: #211925;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

.button-dark-ghost {
  border-color: rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.06);
  color: white;
}

.motion-ready .reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 700ms cubic-bezier(0.2, 0.75, 0.25, 1),
    transform 700ms cubic-bezier(0.2, 0.75, 0.25, 1);
  transition-delay: var(--reveal-delay, 0ms);
}

.motion-ready .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}