:root {
  color-scheme: dark;
  --bg: #090909;
  --panel: #141414;
  --panel-2: #1b1b1b;
  --text: #f7f3e8;
  --muted: #aaa493;
  --accent: #f1c40f;
  --line: rgba(255, 255, 255, 0.1);
  --bad: #ff6b4a;
  --ok: #80c35b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px 1fr;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 24px;
  border-right: 1px solid var(--line);
  background: #0d0d0d;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 0;
  font-size: 28px;
  line-height: 1.05;
}

h2 {
  margin-bottom: 0;
  font-size: 30px;
}

h3 {
  margin-bottom: 14px;
  font-size: 18px;
}

nav,
.list,
.kv,
form,
.button-stack {
  display: grid;
  gap: 10px;
}

button,
input,
textarea,
.app-link {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
}

button,
.app-link {
  min-height: 40px;
  padding: 10px 12px;
  cursor: pointer;
}

button:hover,
.nav.active,
.app-link:hover {
  border-color: var(--accent);
}

.nav {
  text-align: left;
}

.nav.active {
  background: var(--accent);
  color: #111;
  font-weight: 800;
}

.app-link {
  margin-top: auto;
  color: var(--muted);
  text-align: center;
  text-decoration: none;
}

.workspace {
  min-width: 0;
  padding: 24px;
}

.toolbar,
.panel-head,
.actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.toolbar {
  margin-bottom: 22px;
}

.actions input {
  width: 240px;
}

.actions.small {
  justify-content: flex-end;
  gap: 8px;
}

.actions.small button {
  min-height: 34px;
  padding: 7px 9px;
  font-size: 12px;
}

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

.tab {
  display: none;
}

.tab.active {
  display: block;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.metrics article,
.panel,
.item {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.metrics article {
  padding: 16px;
}

.metrics span,
label {
  color: var(--muted);
  font-size: 13px;
}

.metrics strong {
  display: block;
  margin-top: 7px;
  font-size: 22px;
}

.panel {
  padding: 16px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 16px;
}

.split.wide {
  grid-template-columns: minmax(0, 1fr) 360px;
}

label {
  display: grid;
  gap: 7px;
}

input,
textarea,
select {
  width: 100%;
  padding: 11px;
}

select {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
}

textarea {
  min-height: 66vh;
  resize: vertical;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.45;
}

.short-editor {
  min-height: 140px;
  margin-bottom: 12px;
}

.instruction-editor {
  min-height: 120px;
}

.diff-editor {
  min-height: 66vh;
  max-height: 72vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101010;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.45;
}

.diff-line {
  display: grid;
  grid-template-columns: 28px 1fr;
  min-height: 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  white-space: pre-wrap;
}

.diff-line code {
  padding: 3px 8px 3px 0;
  color: var(--text);
  font: inherit;
}

.diff-mark {
  padding: 3px 8px;
  color: var(--muted);
  user-select: none;
}

.diff-add {
  background: rgba(128, 195, 91, 0.14);
}

.diff-add .diff-mark,
.diff-add code {
  color: #b9f29e;
}

.diff-remove {
  background: rgba(255, 107, 74, 0.14);
}

.diff-remove .diff-mark,
.diff-remove code {
  color: #ffb19c;
}

.check-row {
  display: grid;
  grid-template-columns: 18px 1fr;
  align-items: center;
}

.check-row input {
  width: 18px;
  height: 18px;
  padding: 0;
  accent-color: var(--accent);
}

.case-form {
  align-content: start;
}

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

.case-grid .span-2 {
  grid-column: 1 / -1;
}

.case-form input,
.case-form select {
  min-height: 32px;
  padding: 7px 8px;
}

.case-form label {
  gap: 4px;
}

.field-hint {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.3;
}

.case-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-checks .check-row {
  width: auto;
  min-height: 30px;
  grid-template-columns: 16px auto;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
}

.case-checks .check-row input {
  width: 16px;
  height: 16px;
}

.compact-metrics {
  grid-template-columns: repeat(4, minmax(90px, 1fr));
  margin: 10px 0;
}

.compact-metrics article {
  padding: 8px;
}

#autoLearnLog {
  max-height: 42vh;
  overflow: auto;
}

.kv div,
.item {
  padding: 12px;
}

.kv div {
  border-bottom: 1px solid var(--line);
}

.kv div:last-child {
  border-bottom: 0;
}

.item strong {
  display: block;
  margin-bottom: 5px;
}

.item a {
  color: var(--accent);
  word-break: break-word;
}

.compact {
  gap: 8px;
}

.compact .item {
  padding: 10px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 9px;
}

.badges span {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 5px 7px;
  color: var(--muted);
  font-size: 12px;
}

.check-list {
  margin: 10px 0 0;
  padding-left: 18px;
}

.check-list li {
  margin: 4px 0;
}

.pass {
  color: var(--ok);
}

.fail {
  color: var(--bad);
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  max-width: 420px;
  padding: 13px 15px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-2);
  color: var(--text);
  opacity: 0;
  transform: translateY(12px);
  transition: 180ms ease;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (min-width: 901px) {
  body {
    grid-template-columns: 220px 1fr;
    font-size: 13px;
    line-height: 1.38;
  }

  .sidebar {
    gap: 18px;
    padding: 16px;
  }

  .workspace {
    padding: 16px;
  }

  .toolbar {
    margin-bottom: 14px;
  }

  h1 {
    font-size: 22px;
  }

  h2 {
    font-size: 22px;
  }

  h3 {
    margin-bottom: 10px;
    font-size: 15px;
  }

  .eyebrow {
    margin-bottom: 6px;
    font-size: 10px;
  }

  nav,
  .list,
  .kv,
  form,
  .button-stack {
    gap: 8px;
  }

  button,
  .app-link {
    min-height: 32px;
    padding: 7px 9px;
  }

  .actions input {
    width: 210px;
  }

  .actions.small button {
    min-height: 30px;
    padding: 5px 7px;
    font-size: 11px;
  }

  .metrics {
    grid-template-columns: repeat(5, minmax(118px, 1fr));
    gap: 8px;
    margin-bottom: 10px;
  }

  .metrics article,
  .panel {
    padding: 10px;
  }

  .metrics span,
  label {
    font-size: 12px;
  }

  .metrics strong {
    margin-top: 4px;
    font-size: 17px;
  }

  .split {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 10px;
  }

  .split.wide {
    grid-template-columns: minmax(0, 1fr) 330px;
  }

  label {
    gap: 5px;
  }

  input,
  textarea,
  select {
    padding: 8px;
  }

  textarea {
    min-height: 54vh;
    font-size: 12px;
  }

  .diff-editor {
    min-height: 54vh;
    max-height: 66vh;
    font-size: 12px;
  }

  .short-editor {
    min-height: 96px;
    margin-bottom: 8px;
  }

  .instruction-editor {
    min-height: 82px;
  }

  .kv div,
  .item {
    padding: 8px;
  }

  .item strong {
    margin-bottom: 3px;
  }

  .compact {
    gap: 6px;
  }

  .compact .item {
    padding: 7px;
  }

  .badges {
    gap: 5px;
    margin-top: 6px;
  }

  .badges span {
    padding: 3px 6px;
    font-size: 11px;
  }

  .check-list {
    margin-top: 7px;
  }

  .toast {
    padding: 10px 12px;
  }
}

@media (max-width: 900px) {
  body {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
  }

  .split,
  .split.wide,
  .metrics {
    grid-template-columns: 1fr;
  }

  .toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .actions,
  .panel-head {
    align-items: stretch;
    flex-direction: column;
  }

  .actions input {
    width: 100%;
  }

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

  .case-grid .span-2 {
    grid-column: auto;
  }
}