:root {
  --paper: #f5f0e6;
  --paper-raised: #fbf8f0;
  --ink: #27251f;
  --muted: #777166;
  --blue: #3155c6;
  --coral: #e7664d;
  --ochre: #d5a72f;
  --green: #56896f;
  --rule: color-mix(in srgb, var(--blue) 72%, white);
  --shadow: 0 18px 50px rgb(56 45 28 / 11%);
  --radius: 1.1rem;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Iowan Old Style, Baskerville, "Times New Roman", Times, serif;
  color-scheme: light;
  font-family: var(--sans);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

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

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background: var(--paper);
  color: var(--ink);
}

body::after {
  position: fixed;
  z-index: 100;
  inset: 0;
  background-image: url("./assets/grain.svg");
  content: "";
  opacity: 0.48;
  pointer-events: none;
}

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

button {
  min-width: 44px;
  min-height: 44px;
  border: 0;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.38;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  transform: translateY(-180%);
  border: 1px solid var(--blue);
  background: var(--paper-raised);
  color: var(--ink);
  font-weight: 700;
}

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

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.studio {
  display: grid;
  grid-template-columns: 42px minmax(180px, 18vw) minmax(0, 1fr) 42px minmax(245px, 21vw);
  min-height: 100dvh;
  overflow: hidden;
  background: var(--paper);
  color: var(--ink);
}

@media (min-width: 821px) {
  body.brushes-closed .studio {
    grid-template-columns: 42px 0 minmax(0, 1fr) 42px minmax(245px, 21vw);
  }

  body.settings-closed .studio {
    grid-template-columns: 42px minmax(180px, 18vw) minmax(0, 1fr) 42px 0;
  }

  body.brushes-closed.settings-closed .studio {
    grid-template-columns: 42px 0 minmax(0, 1fr) 42px 0;
  }

  body.brushes-closed .brush-panel,
  body.settings-closed .settings-panel {
    padding-inline: 0;
    overflow: hidden;
    visibility: hidden;
  }
}

.paper-panel {
  position: relative;
  z-index: 4;
  min-width: 0;
  border-color: var(--rule);
  background: var(--paper-raised);
  box-shadow: var(--shadow);
}

.panel-rail {
  position: relative;
  z-index: 8;
  display: grid;
  width: 42px;
  min-width: 42px;
  height: 100dvh;
  place-items: center;
  padding: 0;
  border-inline: 1px solid var(--rule);
  background: var(--paper);
  color: var(--blue);
}

.panel-rail span {
  position: absolute;
  left: 50%;
  top: 50%;
  display: block;
  letter-spacing: 0.08em;
  font-size: 0.69rem;
  font-weight: 750;
  line-height: 1;
  text-transform: uppercase;
  transform: translate(-50%, -50%) rotate(-90deg);
  white-space: nowrap;
}

.panel-rail::after {
  position: absolute;
  top: 1rem;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.panel-rail[aria-expanded="true"] {
  background: var(--blue);
  color: var(--paper-raised);
}

.brush-panel {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 4vh, 3rem);
  min-height: 100dvh;
  max-height: 100dvh;
  padding: clamp(1.35rem, 3.2vw, 2.5rem) clamp(1.15rem, 2vw, 2rem) 1.5rem;
  overflow-y: auto;
  border-right: 1px solid var(--rule);
}

.masthead {
  position: relative;
  padding-top: 1.1rem;
}

.masthead::before {
  position: absolute;
  top: 0;
  left: -0.35rem;
  width: 3.25rem;
  height: 0.52rem;
  background: var(--coral);
  clip-path: polygon(0 18%, 100% 0, 91% 100%, 4% 75%);
  content: "";
}

.eyebrow,
.section-mark {
  margin: 0 0 0.8rem;
  color: var(--blue);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.045em;
  line-height: 1.35;
  text-transform: uppercase;
}

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

h1,
h2 {
  font-family: var(--serif);
  font-weight: 400;
}

h1 {
  max-width: 6ch;
  margin-bottom: 0.65rem;
  font-size: clamp(2.9rem, 5.2vw, 5.6rem);
  letter-spacing: -0.065em;
  line-height: 0.82;
}

.intro {
  max-width: 20ch;
  margin-bottom: 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.02rem, 1.6vw, 1.32rem);
  line-height: 1.3;
}

.brush-list {
  display: grid;
  gap: 0.65rem;
}

.brush-card,
.brush-list > button {
  position: relative;
  display: grid;
  grid-template-columns: minmax(52px, 0.36fr) 1fr;
  gap: 0.85rem;
  width: 100%;
  min-height: 76px;
  padding: 0.65rem;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--blue) 34%, transparent);
  border-radius: 0.3rem 0.9rem 0.5rem 0.65rem;
  background: transparent;
  text-align: left;
}

.brush-card:hover,
.brush-list > button:hover,
.brush-card[aria-pressed="true"],
.brush-list > button[aria-pressed="true"] {
  border-color: var(--blue);
  background: color-mix(in srgb, var(--blue) 7%, var(--paper-raised));
}

.brush-card[aria-pressed="true"]::after,
.brush-list > button[aria-pressed="true"]::after {
  position: absolute;
  top: -5px;
  right: -4px;
  width: 20px;
  height: 20px;
  background: var(--ochre);
  clip-path: polygon(48% 0, 100% 25%, 78% 100%, 0 72%, 8% 17%);
  content: "";
}

.brush-preview {
  display: grid;
  min-height: 54px;
  overflow: hidden;
  place-items: center;
  border-radius: 0.25rem 0.7rem 0.35rem 0.45rem;
  background: var(--paper);
}

.brush-preview svg,
.brush-preview canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.brush-copy,
.brush-card__copy {
  align-self: center;
}

.brush-name,
.brush-card strong {
  display: block;
  margin-bottom: 0.22rem;
  font-family: var(--serif);
  font-size: 1.06rem;
  font-weight: 600;
}

.brush-description,
.brush-card small {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  line-height: 1.35;
}

.panel-note {
  margin: auto 0 0;
  padding-top: 0.85rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--serif);
  font-size: 0.8rem;
  font-style: italic;
  line-height: 1.4;
}

.workspace {
  position: relative;
  z-index: 1;
  min-width: 0;
  min-height: 100dvh;
  padding: clamp(0.65rem, 1.5vw, 1.25rem);
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent 49.8%, color-mix(in srgb, var(--blue) 10%, transparent) 50%, transparent 50.2%),
    var(--paper);
}

.canvas-shell {
  position: relative;
  width: 100%;
  height: calc(100dvh - clamp(1.3rem, 3vw, 2.5rem));
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: var(--radius) 0.5rem var(--radius) 0.6rem;
  background: var(--paper-raised);
  box-shadow: var(--shadow);
  isolation: isolate;
}

.canvas-shell::before,
.canvas-shell::after {
  position: absolute;
  z-index: 2;
  content: "";
  pointer-events: none;
}

.canvas-shell::before {
  top: 7%;
  right: -1.25rem;
  width: clamp(3.5rem, 9vw, 7.5rem);
  height: clamp(2rem, 5vw, 4.2rem);
  background: color-mix(in srgb, var(--coral) 88%, transparent);
  clip-path: polygon(18% 3%, 100% 18%, 84% 100%, 0 72%);
  opacity: 0.9;
}

.canvas-shell::after {
  bottom: 5%;
  left: -0.8rem;
  width: clamp(3rem, 7vw, 6rem);
  height: clamp(4rem, 9vw, 8rem);
  background: color-mix(in srgb, var(--blue) 92%, transparent);
  clip-path: polygon(4% 8%, 82% 0, 100% 73%, 29% 100%, 0 68%);
  opacity: 0.94;
}

#score-canvas {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  cursor: crosshair;
}

.canvas-toolbar,
.canvas-corner {
  position: absolute;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.canvas-toolbar--tools {
  top: 0.75rem;
  left: 0.75rem;
}

.canvas-toolbar--history {
  top: 0.75rem;
  right: 0.75rem;
}

.canvas-corner--format {
  bottom: 0.75rem;
  left: 0.75rem;
}

.tool-button,
.icon-button,
.text-button,
.quiet-button {
  border: 1px solid color-mix(in srgb, var(--blue) 30%, transparent);
  background: color-mix(in srgb, var(--paper-raised) 93%, transparent);
  box-shadow: 0 5px 18px rgb(56 45 28 / 8%);
  backdrop-filter: blur(9px);
}

.tool-button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.7rem;
  border-radius: 99px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.tool-button svg,
.icon-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.tool-button[aria-pressed="true"] {
  border-color: var(--blue);
  background: var(--blue);
  color: white;
}

.icon-button {
  display: grid;
  width: 44px;
  padding: 0;
  place-items: center;
  border-radius: 50%;
}

.text-button,
.quiet-button {
  padding: 0.45rem 0.75rem;
  border-radius: 99px;
  color: var(--ink);
  font-size: 0.7rem;
  font-weight: 720;
}

.text-button--blue {
  border-color: var(--blue);
  background: var(--blue);
  color: white;
}

.quiet-button {
  color: var(--muted);
}

.settings-panel {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-height: 100dvh;
  max-height: 100dvh;
  padding: clamp(1.35rem, 3vw, 2.4rem) clamp(1.2rem, 2.2vw, 2.1rem) 1.5rem;
  overflow-y: auto;
  border-left: 1px solid var(--rule);
}

.settings-header {
  position: relative;
  padding-bottom: 1.1rem;
  border-bottom: 1px solid var(--rule);
}

.settings-header::after {
  position: absolute;
  right: 0;
  bottom: -5px;
  width: 2.8rem;
  height: 9px;
  background: var(--green);
  clip-path: polygon(0 20%, 100% 0, 91% 100%, 5% 84%);
  content: "";
}

.settings-header h2 {
  margin-bottom: 0.45rem;
  font-size: clamp(2rem, 3.4vw, 3.65rem);
  letter-spacing: -0.045em;
  line-height: 0.95;
}

.settings-header > p:last-child {
  max-width: 29ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.settings-controls {
  display: grid;
  gap: 1rem;
}

.setting,
.setting-control,
.control-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.4rem 0.75rem;
  align-items: center;
  margin: 0;
}

.setting label,
.setting-control label,
.control-row label,
.palette-group legend {
  font-size: 0.74rem;
  font-weight: 680;
}

.setting output,
.setting-control output,
.control-row output {
  color: var(--blue);
  font-family: var(--serif);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  min-height: 44px;
  margin: 0;
  accent-color: var(--blue);
  cursor: ew-resize;
}

.palette-group,
.palette-options {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.palette-options,
.palette-list {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.55rem;
}

.palette-button,
.palette-option {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.65rem;
  border: 1px solid color-mix(in srgb, var(--blue) 26%, transparent);
  border-radius: 0.35rem;
  background: transparent;
  font-size: 0.72rem;
  text-align: left;
}

.palette-button[aria-pressed="true"],
.palette-option[aria-pressed="true"] {
  border-color: var(--blue);
  box-shadow: inset 4px 0 0 var(--blue);
}

.swatches,
.palette-swatches {
  display: flex;
  gap: 3px;
}

.swatch,
.palette-swatches i {
  width: 12px;
  height: 12px;
  border: 1px solid rgb(39 37 31 / 16%);
  border-radius: 50%;
  background: var(--swatch, var(--blue));
}

.panel-actions {
  display: grid;
  gap: 0.55rem;
  margin-top: auto;
}

.action-button {
  display: grid;
  width: 100%;
  min-height: 62px;
  align-content: center;
  justify-items: start;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--blue);
  border-radius: 0.35rem 0.9rem 0.45rem 0.7rem;
  background: var(--blue);
  color: white;
  text-align: left;
}

.action-button > span {
  font-family: var(--serif);
  font-size: 1.1rem;
}

.action-button small {
  margin-top: 0.1rem;
  font-size: 0.66rem;
}

.toast {
  position: fixed;
  z-index: 150;
  right: 1rem;
  bottom: 1rem;
  max-width: min(24rem, calc(100vw - 2rem));
  min-height: 0;
  margin: 0;
  padding: 0;
  transform: translateY(calc(100% + 2rem));
  border: 1px solid var(--blue);
  border-radius: 0.35rem;
  background: var(--ink);
  color: white;
  font-size: 0.78rem;
  line-height: 1.4;
  opacity: 0;
  pointer-events: none;
  transition: transform 180ms ease, opacity 180ms ease, padding 180ms ease;
}

.toast:not(:empty),
.toast.is-visible {
  min-height: 44px;
  padding: 0.75rem 1rem;
  transform: translateY(0);
  opacity: 1;
}

@media (hover: hover) {
  .panel-rail:hover {
    background: color-mix(in srgb, var(--blue) 8%, var(--paper));
  }

  .tool-button:hover,
  .icon-button:hover,
  .text-button:hover,
  .quiet-button:hover {
    border-color: var(--blue);
  }

  .action-button:hover {
    filter: brightness(0.94);
  }
}

@media (min-width: 821px) and (max-width: 1050px) {
  .tool-button span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
  }

  .tool-button {
    justify-content: center;
    width: 44px;
    padding: 0;
  }

  .canvas-toolbar--history {
    top: auto;
    bottom: 0.75rem;
  }

  .canvas-corner--format {
    bottom: auto;
    left: auto;
    top: 0.75rem;
    right: 0.75rem;
  }

}

@media (max-width: 820px) {
  body::before {
    position: fixed;
    z-index: 9;
    inset: 0;
    background: rgb(39 37 31 / 30%);
    content: "";
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
  }

  body.brushes-open::before,
  body.settings-open::before {
    opacity: 1;
  }

  .studio {
    grid-template-columns: 44px minmax(0, 1fr) 44px;
  }

  .panel-rail--brushes {
    grid-column: 1;
    grid-row: 1;
    width: 44px;
    min-width: 44px;
    transform: none;
  }

  .workspace {
    grid-column: 2;
    grid-row: 1;
    padding: 0.45rem;
  }

  .panel-rail--settings {
    grid-column: 3;
    grid-row: 1;
    width: 44px;
    min-width: 44px;
    transform: none;
  }

  .brush-panel,
  .settings-panel {
    position: fixed;
    z-index: 12;
    top: 0;
    bottom: 0;
    width: min(86vw, 340px);
    min-height: 100dvh;
    max-height: 100dvh;
    visibility: hidden;
    transition: transform 220ms cubic-bezier(0.22, 0.8, 0.3, 1), visibility 0s linear 220ms;
  }

  .brush-panel {
    left: 44px;
    transform: translateX(calc(-100% - 44px));
  }

  .settings-panel {
    right: 44px;
    transform: translateX(calc(100% + 44px));
  }

  body.brushes-open .brush-panel,
  body.settings-open .settings-panel {
    transform: translateX(0);
    visibility: visible;
    transition-delay: 0s;
  }

  .canvas-shell {
    height: calc(100dvh - 0.9rem);
    min-height: 0;
    border-radius: 0.7rem 0.3rem 0.7rem 0.35rem;
  }

  .canvas-toolbar--tools {
    top: 0.55rem;
    left: 0.55rem;
  }

  .canvas-toolbar--history {
    top: auto;
    right: 0.55rem;
    bottom: 0.55rem;
  }

  .canvas-corner--format {
    bottom: auto;
    left: auto;
    top: 0.55rem;
    right: 0.55rem;
  }

  .text-button,
  .quiet-button {
    padding-inline: 0.65rem;
  }

  .tool-button span {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
  }

  .tool-button {
    justify-content: center;
    width: 44px;
    padding: 0;
  }

  .canvas-shell::before {
    top: 12%;
  }

  .canvas-shell::after {
    bottom: 13%;
  }
}

@media (max-width: 520px) {
  .canvas-toolbar--history {
    gap: 0.22rem;
  }

  .canvas-toolbar--history .text-button {
    padding-inline: 0.55rem;
  }

  .panel-rail span {
    font-size: 0.64rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}