:root {
  color-scheme: dark;
  --bg: #101214;
  --panel: #171b20;
  --panel-soft: #1d232a;
  --panel-strong: #232b33;
  --text: #eef4f8;
  --muted: #aab7c2;
  --subtle: #748290;
  --line: #2b3540;
  --accent: #5eead4;
  --accent-strong: #2dd4bf;
  --danger: #fb7185;
  --warn: #facc15;
  --info: #60a5fa;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(94, 234, 212, 0.08), transparent 360px),
    var(--bg);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

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

button,
select,
input {
  min-height: 42px;
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 34px 0 28px;
}

.site-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0 22px;
}

.language-picker {
  display: grid;
  grid-template-columns: auto minmax(128px, 1fr);
  gap: 10px;
  align-items: center;
  min-width: 220px;
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.86rem;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 12px;
  font-size: clamp(2.1rem, 5vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: 0;
}

.lead {
  max-width: 780px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

.security-panel,
.workspace,
.tool-card {
  border: 1px solid var(--line);
  background: rgba(23, 27, 32, 0.88);
  box-shadow: var(--shadow);
}

.security-panel {
  display: grid;
  grid-template-columns: minmax(260px, 0.9fr) minmax(360px, 1.1fr);
  gap: 22px;
  align-items: center;
  padding: 22px;
  border-radius: 8px;
}

.security-heading h2 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.security-heading p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
}

.badge-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.security-badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 7px 12px;
  border: 1px solid rgba(94, 234, 212, 0.34);
  border-radius: 999px;
  color: #d6fff8;
  background: rgba(45, 212, 191, 0.1);
  font-size: 0.82rem;
  white-space: nowrap;
}

.workspace {
  margin-top: 18px;
  padding: 16px;
  border-radius: 8px;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(140px, 0.45fr) minmax(220px, 0.7fr) minmax(360px, 1.4fr);
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.detected {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel-soft);
  color: var(--muted);
}

.detected strong {
  color: var(--accent);
}

.tool-picker {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  color: var(--muted);
}

select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 34px 0 12px;
  color: var(--text);
  background: var(--panel-soft);
}

input[type="text"] {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  color: var(--text);
  background: var(--panel-soft);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  align-items: center;
}

button {
  border: 1px solid rgba(94, 234, 212, 0.48);
  border-radius: 6px;
  padding: 0 14px;
  color: #05201d;
  background: var(--accent);
  cursor: pointer;
  font-weight: 700;
}

button:hover {
  background: var(--accent-strong);
}

button.secondary {
  border-color: var(--line);
  color: var(--text);
  background: var(--panel-strong);
}

button.secondary:hover {
  border-color: #465563;
  background: #2a333d;
}

.copy-status {
  min-width: 56px;
  color: var(--accent);
  font-size: 0.86rem;
}

.filter-panel {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: end;
  margin-bottom: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(29, 35, 42, 0.76);
}

.filter-panel[hidden] {
  display: none;
}

.filter-panel label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.86rem;
}

.checkbox-control {
  display: flex !important;
  grid-template-columns: none;
  flex-direction: row;
  align-items: center;
  min-height: 42px;
  gap: 8px !important;
  white-space: nowrap;
}

.checkbox-control input {
  width: 16px;
  min-height: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.editor-grid,
.compare-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.compare-panel {
  margin-bottom: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(29, 35, 42, 0.58);
}

.compare-panel[hidden] {
  display: none;
}

.editor-grid.output-only {
  grid-template-columns: 1fr;
}

.editor-panel[hidden] {
  display: none;
}

.editor-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 8px;
}

.panel-title {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

textarea {
  width: 100%;
  min-height: 240px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  color: var(--text);
  background: #0d1013;
  line-height: 1.55;
  tab-size: 2;
  outline: none;
}

textarea:focus,
select:focus,
input:focus,
button:focus-visible {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(94, 234, 212, 0.14);
}

textarea::placeholder {
  color: #637180;
}

textarea[readonly] {
  color: #d9e6ee;
  background: #0b0e11;
}

.refactor-rules {
  margin-top: 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(23, 27, 32, 0.72);
}

.refactor-rules h2 {
  margin-bottom: 12px;
  font-size: 1.05rem;
}

.rule-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.rule-grid p {
  min-height: 82px;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  background: var(--panel-soft);
  font-size: 0.82rem;
  line-height: 1.6;
}

.preview-output {
  min-height: 120px;
  max-height: 340px;
  overflow: auto;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: #0b0e11;
  line-height: 1.55;
  white-space: pre-wrap;
}

.tool-cards {
  margin-top: 30px;
}

.tool-cards h2 {
  margin-bottom: 14px;
  font-size: 1.15rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.tool-card {
  min-height: 136px;
  padding: 16px;
  border-radius: 8px;
}

.tool-card h3 {
  margin-bottom: 10px;
  color: var(--text);
  font-size: 0.98rem;
  line-height: 1.35;
}

.tool-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.65;
}

.site-footer {
  padding: 30px 0 0;
  color: var(--subtle);
  text-align: center;
}

.site-footer p {
  margin-bottom: 0;
}

@media (max-width: 980px) {
  .security-panel,
  .toolbar {
    grid-template-columns: 1fr;
  }

  .badge-grid,
  .actions {
    justify-content: flex-start;
  }

  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-panel,
  .rule-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .app-shell {
    width: min(100% - 22px, 1180px);
    padding-top: 18px;
  }

  .site-header {
    padding-top: 8px;
    flex-direction: column;
    gap: 14px;
  }

  .language-picker {
    width: 100%;
    grid-template-columns: auto minmax(0, 1fr);
  }

  .security-panel,
  .workspace {
    padding: 14px;
  }

  .editor-grid,
  .compare-panel,
  .cards-grid,
  .filter-panel,
  .rule-grid {
    grid-template-columns: 1fr;
  }

  .tool-picker {
    grid-template-columns: 1fr;
    gap: 6px;
  }

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

  .actions button:first-child {
    grid-column: 1 / -1;
  }

  .copy-status {
    min-height: 20px;
  }
}