/* Global portfolio tokens */
:root {
  --bg-warm: #f7f7f5;
  --bg-white: #ffffff;
  --bg-process: #efefec;
  --bg-dark: #0a0a0a;
  --text-primary: #1a1a1a;
  --text-secondary: #5c5c5c;
  --text-tertiary: #8a8a8a;
  --text-on-dark: #f5f5f3;
  --text-muted-dark: #a8a8a8;
  --border: #e0e0dc;
  --border-dark: #2a2a2a;
  --accent: #1473e6;
  --accent-subtle: rgba(20, 115, 230, 0.12);
  --rule: #d8d8d4;

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-wide: 1440px;
  --max-content: 1200px;
  --max-reading: 640px;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  --radius-sm: 4px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-warm);
  -webkit-font-smoothing: antialiased;
}

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

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.container {
  width: min(var(--max-wide), calc(100vw - 96px));
  margin-inline: auto;
}

.container--content {
  width: min(var(--max-content), calc(100vw - 96px));
  margin-inline: auto;
}

.container--reading {
  width: min(var(--max-reading), calc(100vw - 96px));
  margin-inline: auto;
}

@media (max-width: 1024px) {
  .container,
  .container--content,
  .container--reading {
    width: calc(100vw - 64px);
  }
}

@media (max-width: 640px) {
  .container,
  .container--content,
  .container--reading {
    width: calc(100vw - 40px);
  }
}

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-sm) 0;
  background: rgba(247, 247, 245, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.site-nav.is-scrolled {
  border-bottom-color: var(--border);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav__logo {
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.site-nav__back {
  font-size: 14px;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color 0.2s var(--ease);
}

.site-nav__back:hover {
  color: var(--text-primary);
}

.eyebrow {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

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

.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;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}