:root {
  --bg: #e8e5fb;
  --panel: #d6d1f5;
  --fg: #261a5e;
  --ac: #5b4bb7;
  --bd: #6c5eb5;
  color-scheme: light dark;
  box-sizing: border-box;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #352879;
    --panel: #2b2066;
    --fg: #d5cfff;
    --ac: #b8c76f;
    --bd: #6c5eb5;
  }
}

:root[data-theme="dark"] {
  --bg: #352879;
  --panel: #2b2066;
  --fg: #d5cfff;
  --ac: #b8c76f;
  --bd: #6c5eb5;
}

html {
  scroll-padding-top: env(safe-area-inset-top, 0px);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 24px/1.25 "Syne", syne, Menlo, Consolas, monospace;
}

main {
  max-width: 640px;
  margin: 0 auto;
  padding: 28px max(18px, env(safe-area-inset-right, 0px)) 40px max(18px, env(safe-area-inset-left, 0px));
}

h1 {
  font-size: clamp(38px, 12vw, 56px);
  line-height: 1;
  margin: 0 0 6px;
  font-weight: 400;
  letter-spacing: 1px;
}

.sub {
  margin: 0 0 20px;
  max-width: 60ch;
}

textarea {
  width: 100%;
  font: inherit;
  color: inherit;
  background: var(--panel);
  border: 3px solid var(--bd);
  padding: 10px;
  resize: vertical;
  border-radius: 0;
}

textarea:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid var(--ac);
  outline-offset: 2px;
}

.row {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
  margin: 12px 0;
}

button,
.btn {
  font: inherit;
  cursor: pointer;
  border: 3px solid var(--bd);
  background: var(--panel);
  color: var(--fg);
  padding: 4px 12px;
  min-height: 44px;
  min-width: 44px;
  border-radius: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  touch-action: manipulation;
}

select {
  font: inherit;
  color: inherit;
  background: var(--panel);
  border: 3px solid var(--bd);
  padding: 4px 8px;
  min-height: 44px;
  border-radius: 0;
  max-width: 100%;
}

.row.small {
  font-size: 19px;
  gap: 12px;
}

.row.small label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.row.small select {
  min-height: 36px;
  padding: 2px 6px;
}

input[type="checkbox"] {
  width: 24px;
  height: 24px;
  accent-color: var(--ac);
}

[hidden] {
  display: none !important;
}

#tabs button[aria-pressed="true"] {
  background: var(--ac);
  color: var(--bg);
  border-color: var(--ac);
}

input[type="text"] {
  font: inherit;
  color: inherit;
  background: var(--panel);
  border: 3px solid var(--bd);
  padding: 4px 8px;
  border-radius: 0;
  min-width: 0;
  flex: 1 1 140px;
}

.roll {
  overflow: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  max-height: min(340px, 48vh);
  border: 3px solid var(--bd);
  background: var(--panel);
  margin: 8px 0;
}

#roll {
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
  display: block;
  width: auto;
  height: auto;
  border: 0;
  margin: 0;
  background: none;
  touch-action: manipulation;
}

.sing #presets,
.sing #ph,
.sing .sp,
.sing #sl label:nth-child(-n+2) {
  display: none;
}

button:hover,
.btn:hover,
select:hover {
  border-color: var(--ac);
}

.row:has(#go) {
  position: sticky;
  bottom: 0;
  z-index: 5;
  background: var(--bg);
  margin: 0;
  padding: 8px 0 calc(8px + env(safe-area-inset-bottom, 0px));
  border-top: 3px solid var(--bd);
}

@media (max-width: 480px) {
  main {
    padding: 20px max(12px, env(safe-area-inset-right, 0px)) 24px max(12px, env(safe-area-inset-left, 0px));
  }
  #sl label {
    grid-template-columns: 96px 40px 1fr;
  }
  #sl span {
    font-size: 15px;
  }
  #go {
    font-size: 26px;
    padding: 4px 18px;
  }
  .row {
    gap: 10px;
  }
}

@media (pointer: coarse) {
  input[type="range"] {
    height: 32px;
  }
}

button:disabled {
  opacity: 0.4;
  cursor: default;
}

button:disabled:hover {
  border-color: var(--bd);
}

#go {
  background: var(--ac);
  color: var(--bg);
  border-color: var(--ac);
  font-size: 30px;
  padding: 4px 26px;
}

canvas {
  display: block;
  width: 100%;
  height: 110px;
  background: var(--panel);
  border: 3px solid var(--bd);
  margin: 8px 0 16px;
}

#presets {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

#sl {
  display: grid;
  gap: 10px;
}

#sl label {
  display: grid;
  grid-template-columns: 132px 50px 1fr;
  align-items: center;
  gap: 8px;
}

#sl span {
  font-size: 18px;
  white-space: nowrap;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--ac);
}

.ph {
  min-height: 3em;
  margin: 18px 0 6px;
  padding: 8px 10px;
  border-left: 6px solid var(--ac);
  background: var(--panel);
  word-break: break-word;
}

.hint {
  opacity: 0.8;
  margin: 0;
}