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

html, body { margin: 0; padding: 0; }

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--type-body);
  font-size: var(--size-body);
  line-height: var(--line-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  min-height: 100vh;
  background: var(--paper);
}

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

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur-link) var(--ease-soft);
}

a:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 4px;
  border-radius: 2px;
}

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

.image-frame {
  display: block;
  background: var(--paper-2);
  position: relative;
  overflow: hidden;
}

.image-frame[data-ratio="3-4"] { aspect-ratio: 3 / 4; }
.image-frame[data-ratio="4-5"] { aspect-ratio: 4 / 5; }
.image-frame[data-ratio="1-1"] { aspect-ratio: 1 / 1; }

.image-frame.is-empty {
  background:
    linear-gradient(135deg, transparent 49.6%, var(--ink-10) 49.6%, var(--ink-10) 50.4%, transparent 50.4%),
    linear-gradient(45deg, transparent 49.6%, var(--ink-10) 49.6%, var(--ink-10) 50.4%, transparent 50.4%),
    var(--paper-2);
}

.image-frame[data-todo]::after {
  content: attr(data-todo);
  position: absolute;
  left: 16px;
  bottom: 12px;
  font-family: var(--type-ui);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-2);
  opacity: 0;
  transition: opacity var(--dur-link) var(--ease-soft);
}
.image-frame[data-todo]:hover::after { opacity: 0.6; }