:root {
  --bg: #ffffff;
  --panel: #f6f7f9;
  --fg: #1f2328;
  --muted: #656d76;
  --line: #d8dee4;
  --accent: #2f6fdd;
  --accent-fg: #ffffff;
  --ok: #1a7f37;
  --warn: #9a6700;
  --err: #cf222e;
  --err-bg: #ffebe9;
  --chip: #eef1f5;
  --active: #e7eefc;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --panel: #161b22;
    --fg: #e6edf3;
    --muted: #8d96a0;
    --line: #30363d;
    --accent: #4c8dff;
    --chip: #21262d;
    --active: #1c2a44;
    --err-bg: #3a1618;
    --ok: #3fb950;
    --warn: #d29922;
    --err: #f85149;
    color-scheme: dark;
  }
}
* {
  box-sizing: border-box;
}
/* the hidden attribute must win over every display rule below */
[hidden] {
  /* biome-ignore lint/complexity/noImportantStyles: deliberate, see above */
  display: none !important;
}
#root {
  height: 100%;
}
html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font:
    14px / 1.45 system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
}
button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}
button {
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 6px;
  padding: 5px 12px;
}
button:hover:not(:disabled) {
  border-color: var(--muted);
}
button:disabled {
  opacity: 0.55;
  cursor: default;
}
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
  font-weight: 600;
}
button.link {
  border: 0;
  background: none;
  color: var(--accent);
  padding: 0;
}
input[type="text"],
input[type="email"],
input[type="password"],
select,
textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  padding: 6px 8px;
  min-width: 0;
}
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  outline-offset: -1px;
  border-color: var(--accent);
}
textarea {
  width: 100%;
  resize: vertical;
}
textarea.code {
  font: 12.5px / 1.55 var(--mono);
  tab-size: 2;
  white-space: pre;
  overflow-wrap: normal;
  overflow-x: auto;
}
code {
  font-family: var(--mono);
  font-size: 12.5px;
  background: var(--chip);
  padding: 0 4px;
  border-radius: 4px;
}
.muted {
  color: var(--muted);
}
.small {
  font-size: 12.5px;
}
.error {
  color: var(--err);
}
.spacer {
  flex: 1;
}

/* login */
.login {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--panel);
}
.login .card {
  width: min(380px, 100%);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.login h1 {
  margin: 0;
  font-size: 20px;
}
.login p {
  margin: 0;
}

/* shell */
.top {
  height: 48px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.brand {
  font-weight: 700;
}
.badge {
  font-size: 12px;
  border-radius: 999px;
  padding: 1px 8px;
  background: var(--chip);
  color: var(--muted);
  white-space: nowrap;
}
.badge.env-production {
  background: var(--err-bg);
  color: var(--err);
  font-weight: 600;
}
.badge.dirty {
  background: color-mix(in srgb, var(--warn) 18%, transparent);
  color: var(--warn);
}
.shell {
  display: grid;
  grid-template-columns: 230px minmax(380px, 1fr) minmax(360px, 1fr);
  height: calc(100% - 48px);
}
.side {
  border-right: 1px solid var(--line);
  overflow: auto;
  padding: 12px 8px;
  background: var(--panel);
}
.side-title {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding: 8px 8px 4px;
}
.item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  width: 100%;
  border: 0;
  background: none;
  border-radius: 6px;
  padding: 6px 8px;
  text-align: left;
}
.item:hover {
  background: var(--chip);
}
.item.active {
  background: var(--active);
}
.item .key {
  font-family: var(--mono);
  font-size: 13px;
}
.item .meta {
  font-size: 12px;
  color: var(--muted);
}
.new-form {
  display: flex;
  gap: 6px;
  padding: 6px 8px;
}
.new-form input {
  flex: 1;
  font-family: var(--mono);
  font-size: 13px;
}
.side .add {
  margin: 6px 8px;
}

/* editor */
.edit {
  overflow: auto;
  padding: 16px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}
.bar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.bar h2 {
  margin: 0;
  font-size: 18px;
  font-family: var(--mono);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.bar:first-child {
  flex-wrap: nowrap;
}
.bar select {
  max-width: 190px;
  min-width: 90px;
  flex-shrink: 1;
}
.bar .badge,
.bar button {
  flex-shrink: 0;
}
.banner {
  border: 1px solid var(--warn);
  background: color-mix(in srgb, var(--warn) 10%, transparent);
  border-radius: 8px;
  padding: 8px 12px;
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.field > label,
.field > .label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: center;
}
.field .hint {
  font-size: 12px;
  color: var(--muted);
  font-weight: 400;
}
.row {
  display: flex;
  gap: 10px;
  align-items: center;
}
.row > .grow {
  flex: 1;
}
.tabs {
  display: flex;
  gap: 4px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 6px;
  flex-wrap: wrap;
}
.tab {
  border-radius: 6px 6px 0 0;
  border: 1px solid transparent;
  background: none;
  font-family: var(--mono);
  font-size: 13px;
}
.tab.active {
  border-color: var(--line);
  background: var(--active);
  font-weight: 600;
}
.tabs input {
  width: 90px;
  font-family: var(--mono);
  font-size: 13px;
  padding: 3px 6px;
}
.test {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.test input {
  width: 230px;
}
.status-ok {
  color: var(--ok);
}
.status-warn {
  color: var(--warn);
}
.status-err {
  color: var(--err);
}
.check {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  font-size: 13px;
  color: var(--fg);
  font-weight: 400;
}

/* preview */
.preview {
  border-left: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
}
.pv-head {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: var(--panel);
}
.pv-subject {
  font-weight: 600;
  overflow-wrap: anywhere;
}
.pv-error {
  margin: 0;
  padding: 8px 14px;
  background: var(--err-bg);
  color: var(--err);
  font: 12.5px / 1.5 var(--mono);
  white-space: pre-wrap;
  border-bottom: 1px solid var(--line);
}
.preview iframe {
  flex: 1;
  border: 0;
  width: 100%;
  background: #ffffff;
}
.pv-text {
  flex: 1;
  margin: 0;
  padding: 14px;
  overflow: auto;
  font: 12.5px / 1.55 var(--mono);
  white-space: pre-wrap;
}
.empty {
  padding: 40px 20px;
  color: var(--muted);
}

#toast {
  position: fixed;
  right: 16px;
  bottom: 16px;
  max-width: min(420px, calc(100% - 32px));
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--fg);
  color: var(--bg);
  box-shadow: 0 6px 24px rgb(0 0 0 / 18%);
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 0.15s,
    transform 0.15s;
  pointer-events: none;
}
#toast.show {
  opacity: 1;
  transform: none;
}
#toast.err {
  background: var(--err);
  color: #fff;
}

@media (max-width: 1100px) {
  .shell {
    grid-template-columns: 210px 1fr;
    grid-template-rows: auto 70vh;
    height: auto;
    min-height: calc(100% - 48px);
  }
  .side {
    grid-row: span 2;
  }
  .preview {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}