/*
 * Site base styles (docs/CONVENTIONS.md §12).
 * Exactly two colours: --earth and --white. No grey, no translucency, no radius,
 * no shadow, no dark mode, no gradient, no italics. Hierarchy = size, weight,
 * spacing and solid rules.
 */
:root {
  --earth: #2b2420;
  --white: #ffffff;
  --font-sans: Arial, "Liberation Sans", "Hiragino Sans", "Noto Sans CJK JP", "Yu Gothic", Meiryo, "DejaVu Sans", sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  border-radius: 0;
  box-shadow: none;
}

html {
  color-scheme: light;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0 16px;
  background: var(--white);
  color: var(--earth);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  font-style: normal;
  overflow-x: hidden;
}

em, i, cite, dfn, var, address {
  font-style: normal;
}

::selection {
  background: var(--earth);
  color: var(--white);
}

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

h1 {
  font-size: 1.5rem;
  font-weight: 700;
}

h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.hint {
  font-size: 0.875rem;
  line-height: 1.5;
  margin-top: 8px;
}

a {
  color: var(--earth);
}

:focus-visible {
  outline: 2px solid var(--earth);
  outline-offset: 2px;
}

button,
input,
select,
textarea {
  font: inherit;
  color: var(--earth);
  background: var(--white);
  border: 1px solid var(--earth);
  border-radius: 0;
  padding: 6px 10px;
  min-width: 0;
  max-width: 100%;
}

button {
  cursor: pointer;
  font-weight: 700;
  padding: 8px 16px;
}

button:hover {
  background: var(--earth);
  color: var(--white);
}

input[type="checkbox"],
input[type="radio"] {
  accent-color: var(--earth);
}

input[type="color"] {
  padding: 2px;
  width: 48px;
  height: 36px;
}

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

/* ---------- site frame ---------- */

.site-header,
#app,
.site-footer {
  max-width: 1080px;
  margin: 0 auto;
}

.site-header {
  padding: 24px 0 12px;
  border-bottom: 2px solid var(--earth);
}

#app {
  padding: 16px 0 24px;
}

.site-footer {
  padding: 12px 0 24px;
  border-top: 1px solid var(--earth);
  font-size: 0.875rem;
}

/* ---------- layout: left = presets and parameters, right = preview and export ---------- */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.col {
  display: grid;
  gap: 24px;
  min-width: 0;
}

@media (min-width: 800px) {
  .layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
  }
}

.block {
  border-top: 1px solid var(--earth);
  padding-top: 16px;
  min-width: 0;
}

/* ---------- notices and the share bar ---------- */

.notice {
  border: 1px solid var(--earth);
  padding: 12px 16px;
  margin-bottom: 16px;
  display: grid;
  gap: 4px;
}

.notice p {
  font-weight: 700;
  font-size: 0.9375rem;
  overflow-wrap: anywhere;
}

.share {
  border-top: 1px solid var(--earth);
  border-bottom: 1px solid var(--earth);
  padding: 12px 0;
  margin-bottom: 16px;
}

.share-label {
  font-weight: 700;
  font-size: 0.875rem;
  margin-bottom: 8px;
}

.share-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.share-row input,
#share-link {
  flex: 1 1 200px;
  width: 100%;
}

textarea {
  width: 100%;
  font-family: ui-monospace, Menlo, Consolas, "DejaVu Sans Mono", monospace;
  font-size: 0.875rem;
}

#settings-json {
  margin-top: 8px;
  white-space: pre;
  overflow-x: auto;
}

.settings-error,
.settings-long {
  font-weight: 700;
  border-left: 4px solid var(--earth);
  padding-left: 8px;
  overflow-wrap: anywhere;
}

#settings-long[hidden],
#warnings[hidden] {
  display: none;
}

/* Phone width: 16 px side gutters are provided by body; no horizontal page scroll. */
@media (max-width: 479px) {
  h1 {
    font-size: 1.25rem;
  }
  button {
    width: 100%;
  }
  .share-row button {
    width: auto;
    flex: 0 0 auto;
  }
}