/* Base: reset, page canvas, focus, selection, reduced motion. */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-canvas);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--text-body-lg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
p,
ul,
ol {
  margin: 0;
}

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

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

img,
svg {
  display: block;
}

button {
  font-family: inherit;
}

::selection {
  background: rgba(255, 255, 255, 0.22);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* The product mark (apps/ui/src/shell/mark.ts + shell.css .sh-mark-*). */
.sh-mark {
  flex: none;
}

.sh-mark-body,
.sh-mark-tuft {
  fill: #ffdb3f;
}

.sh-mark-eye {
  fill: #0e2a68;
}

.sh-mark-beak {
  fill: #f7a823;
}

.sh-mark-smile {
  fill: none;
  stroke: #b65e00;
  stroke-width: 0.5;
  stroke-linecap: round;
}

/* Monospace spans inside copy (model names, numbers). */
.sd-mono {
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: -0.01em;
}

/* Reveal on scroll: the opacity fades here; the rise is a real spring, driven in js/main.js. */
[data-reveal] {
  opacity: 0;
}

.sd-revealed {
  opacity: 1;
  transition: opacity var(--duration-slow) var(--ease-standard);
}

/* Reduced motion: everything fades or jumps, nothing springs (plan §6 rule 6). */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none !important;
    transition: none;
  }

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