:root {
  color-scheme: light dark;
  --bg: #f5f7f6;
  --panel: #ffffff;
  --panel-strong: #eef4f2;
  --text: #17201d;
  --muted: #56615d;
  --border: #c7d1cd;
  --accent: #007f68;
  --accent-strong: #005f4e;
  --danger: #b73545;
  --warning: #915f00;
  --zone: rgba(0, 127, 104, 0.22);
  --shadow: 0 12px 36px rgba(14, 28, 23, 0.10);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816;
    --panel: #1f2522;
    --panel-strong: #26302c;
    --text: #eef5f2;
    --muted: #aebbb6;
    --border: #43514c;
    --accent: #2ab89d;
    --accent-strong: #63d7c1;
    --danger: #d35a68;
    --warning: #e0b354;
    --zone: rgba(42, 184, 157, 0.22);
    --shadow: 0 16px 42px rgba(0, 0, 0, 0.28);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
}

body {
  margin: 0;
  font: 14px/1.45 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    linear-gradient(180deg, var(--panel-strong), transparent 320px),
    var(--bg);
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

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

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  font-size: 1.05rem;
}

p,
li {
  color: var(--muted);
}

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

button {
  min-height: 36px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  padding: 7px 11px;
  cursor: pointer;
}

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

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

button.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #ffffff;
}

input,
select,
textarea {
  width: 100%;
  min-height: 36px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
  padding: 7px;
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  min-height: auto;
}

textarea {
  min-height: 260px;
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: 0.86rem;
}

label {
  display: grid;
  gap: 4px;
  color: var(--muted);
}

fieldset {
  border: 1px solid var(--border);
  border-radius: 8px;
  margin: 0;
  padding: 10px;
}

legend {
  color: var(--muted);
  padding: 0 5px;
}

.site-header,
main {
  max-width: 1440px;
  margin: 0 auto;
  padding: 20px;
}

.site-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  padding-top: 34px;
}

.brand {
  display: flex;
  gap: 16px;
  align-items: center;
}

.brand img {
  flex: 0 0 auto;
  width: 128px;
  height: 128px;
  border-radius: 8px;
  object-fit: cover;
}

.eyebrow {
  color: var(--accent-strong);
  font-weight: 700;
  text-transform: uppercase;
}

.lede {
  max-width: 760px;
  margin-top: 12px;
  font-size: 1.06rem;
}

.project-links,
.badges,
.toolbar,
.format-selector {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.project-links a,
.badges span {
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--panel);
  padding: 7px 11px;
  text-decoration: none;
  white-space: nowrap;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
  gap: 18px 28px;
  align-items: start;
  margin-bottom: 20px;
}

.intro > div:first-child {
  display: grid;
  gap: 8px;
}

.badges {
  justify-content: flex-end;
}

.usage {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.usage li {
  min-height: 72px;
  border-left: 3px solid var(--accent);
  padding: 8px 10px;
  background: color-mix(in srgb, var(--panel) 72%, transparent);
}

.editor-grid {
  display: grid;
  grid-template-columns: minmax(230px, 280px) minmax(420px, 1fr) minmax(320px, 390px);
  gap: 16px;
  align-items: start;
}

.panel {
  display: grid;
  gap: 12px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  box-shadow: var(--shadow);
}

.section-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.toolbar {
  margin: 0;
}

.toolbar label {
  align-items: center;
}

.toolbar input[type="number"] {
  width: 92px;
}

.toolbar select {
  width: 116px;
}

.prominent {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.inline {
  display: flex;
  flex-direction: row;
  gap: 6px;
  align-items: center;
}

.layouts,
.zones {
  display: grid;
  gap: 7px;
}

.item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px;
  cursor: pointer;
  word-break: break-word;
}

.item:hover {
  border-color: var(--accent);
}

.item.active {
  border-color: var(--accent);
  outline: 2px solid color-mix(in srgb, var(--accent) 32%, transparent);
}

.canvas-wrap {
  aspect-ratio: 16 / 9;
  width: 100%;
  min-height: 280px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    linear-gradient(to right, color-mix(in srgb, var(--border) 45%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in srgb, var(--border) 45%, transparent) 1px, transparent 1px),
    var(--panel-strong);
  background-size: 10% 10%;
  position: relative;
  overflow: hidden;
  user-select: none;
  touch-action: none;
}

.canvas-wrap.dragging {
  outline: 3px solid color-mix(in srgb, var(--accent) 45%, transparent);
}

.zone {
  position: absolute;
  border: 2px solid var(--accent);
  border-radius: 6px;
  background: var(--zone);
  min-width: 26px;
  min-height: 26px;
  cursor: move;
}

.zone.active {
  border-color: var(--danger);
  background: color-mix(in srgb, var(--danger) 22%, transparent);
}

.zone .label {
  position: absolute;
  top: 6px;
  left: 6px;
  max-width: calc(100% - 12px);
  overflow: hidden;
  text-overflow: ellipsis;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--panel);
  color: var(--text);
  padding: 2px 6px;
  pointer-events: none;
}

.zone .handle {
  position: absolute;
  right: 0;
  bottom: 0;
  width: 18px;
  height: 18px;
  border-top-left-radius: 6px;
  background: var(--accent);
  cursor: nwse-resize;
}

.padding-preview {
  position: absolute;
  border: 1px dashed color-mix(in srgb, var(--accent) 65%, var(--panel));
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  pointer-events: none;
}

.zone.active .padding-preview {
  border-color: color-mix(in srgb, var(--danger) 75%, var(--panel));
  background: color-mix(in srgb, var(--danger) 12%, transparent);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.status,
.format-help {
  min-height: 22px;
}

.status.is-error {
  color: var(--danger);
}

.status.is-success {
  color: var(--accent-strong);
}

@media (max-width: 1120px) {
  .site-header,
  .intro,
  .editor-grid {
    grid-template-columns: 1fr;
  }

  .site-header {
    align-items: flex-start;
  }

  .badges {
    justify-content: flex-start;
  }

  .usage {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header,
  main {
    padding: 14px;
  }

  .site-header,
  .section-head {
    display: grid;
  }

  .brand {
    align-items: flex-start;
  }

  .brand img {
    width: 82px;
    height: 82px;
  }

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

  .canvas-wrap {
    min-height: 220px;
  }

  .prominent,
  .form-grid {
    grid-template-columns: 1fr;
  }
}