/* Shared exercise book look: squared paper, red margin, blue ink, red pen marking. */

@font-face {
  font-family: "Patrick Hand";
  src: url("/fonts/patrick-hand-latin-400-normal.woff2") format("woff2");
  font-display: swap;
}
@font-face {
  font-family: "Permanent Marker";
  src: url("/fonts/permanent-marker-latin-400-normal.woff2") format("woff2");
  font-display: swap;
}

:root {
  --paper: #fbfcf8;
  --grid: #bddff0;
  --margin: #e9837c;
  --pencil: #2d3142;
  --soft: #5b6073;
  --ink: #1f43c4;
  --red: #d93a2f;
  --green: #1c8a52;
  --wood: #f1d98c;
  --hi: #ffe45c;
  --g: 28px;
  --mx: 34px;
  --hand: "Patrick Hand", "Segoe Print", "Bradley Hand", cursive;
  --marker: "Permanent Marker", "Segoe Print", "Bradley Hand", cursive;
}

* {
  box-sizing: border-box;
}
html {
  color-scheme: light;
}
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background-color: var(--paper);
  background-image: linear-gradient(to right, var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
  background-size: var(--g) var(--g);
  font-family: var(--hand);
  font-size: 20px;
  line-height: 1.25;
  color: var(--pencil);
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}
/* the red margin rule */
body::before {
  content: "";
  position: fixed;
  top: 0;
  bottom: 0;
  left: var(--mx);
  width: 2px;
  background: var(--margin);
  pointer-events: none;
  z-index: 0;
}
[hidden] {
  display: none !important;
}

/* a wooden ruler across the top */
.ruler {
  height: 1.1em;
  font-size: 20px;
  background: repeating-linear-gradient(to right, var(--pencil) 0 1.5px, transparent 1.5px 8px) left bottom / 100% 0.35em no-repeat,
    repeating-linear-gradient(to right, var(--pencil) 0 2px, transparent 2px 40px) left bottom / 100% 0.65em no-repeat,
    var(--wood);
  border-bottom: 2px solid var(--pencil);
  position: relative;
  z-index: 1;
}

.title {
  display: inline-block;
  margin: 0;
  font-family: var(--marker);
  font-weight: 400;
  color: var(--ink);
  border-bottom: 0.1em double var(--red);
  padding: 0 0.1em 0.04em;
  transform: rotate(-1.2deg);
}

.btn {
  font-family: var(--marker);
  font-size: 22px;
  color: var(--pencil);
  background: var(--hi);
  border: 3px solid var(--pencil);
  border-radius: 8px 14px 9px 13px;
  padding: 0.5em 1em;
  box-shadow: 4px 4px 0 var(--pencil);
  cursor: pointer;
  touch-action: manipulation;
}
.btn:active:not(:disabled) {
  transform: translate(3px, 3px);
  box-shadow: 1px 1px 0 var(--pencil);
}
.btn:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}
.btn:disabled {
  opacity: 0.45;
  cursor: default;
}
.btn.quiet {
  background: var(--paper);
  font-family: var(--hand);
  font-size: 20px;
  box-shadow: 3px 3px 0 var(--pencil);
}

.stamp {
  display: inline-block;
  font-family: var(--marker);
  font-size: 54px;
  line-height: 1;
  color: var(--red);
  border: 6px solid var(--red);
  border-radius: 10px;
  padding: 6px 18px 4px;
  transform: rotate(-6deg);
  letter-spacing: 2px;
}

/* avatars: a small pinned drawing, or a coloured initial */
.avatar {
  --size: 6rem;
  display: inline-grid;
  place-items: center;
  width: var(--size);
  height: var(--size);
  flex: none;
  overflow: hidden;
  border: 3px solid var(--pencil);
  border-radius: 10px;
  background: var(--paper);
  box-shadow: 3px 3px 0 var(--pencil);
  transform: rotate(var(--tilt, 0deg));
}
.avatar img {
  width: 100%;
  height: 100%;
  display: block;
}
.avatar.plain {
  background: hsl(var(--hue, 210) 55% 46%);
  color: #fff;
  font-family: var(--marker);
  font-size: calc(var(--size) * 0.55);
  line-height: 1;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }
}