:root {
  --color-bg-light: #f7f7fb;
  --color-bg-light-elevated: #ffffff;
  --color-bg-dark: #050712;
  --color-bg-dark-elevated: #0f111a;
  --color-border-subtle-light: #e0e3ee;
  --color-border-subtle-dark: #262a3c;
  --color-text-light: #111322;
  --color-text-muted-light: #5c6279;
  --color-text-dark: #f5f5ff;
  --color-text-muted-dark: #a4a8c5;
  --color-accent: #4f46e5;
  --color-accent-soft: rgba(79, 70, 229, 0.12);
  --color-accent-strong: rgba(79, 70, 229, 0.2);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.16);
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
   /*display: flex;*/
  flex-direction: column;
  background: radial-gradient(circle at top left, #eef2ff 0, #f7f7fb 38%, #fff 80%);
  color: var(--color-text-light);
}

body.theme-dark {
  background: radial-gradient(circle at top left, #111827 0, #020617 50%, #020617 85%);
  color: var(--color-text-dark);
}

.app-header {
  max-width: 1120px;
  margin: 32px auto 12px auto;
  padding: 0 20px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.app-header-main {
  min-width: 0;
}

.app-title {
  margin: 0 0 4px 0;
  font-size: 28px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-title::after {
  content: "Formatting → Semantics";
  font-size: 12px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.theme-dark .app-title::after {
  background: rgba(129, 140, 248, 0.16);
}

.app-subtitle {
  margin: 0;
  font-size: 13px;
  color: var(--color-text-muted-light);
}

body.theme-dark .app-subtitle {
  color: var(--color-text-muted-dark);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.04);
}

body.theme-dark .theme-toggle {
  background: rgba(15, 23, 42, 0.6);
}

.theme-toggle-btn {
  position: relative;
  border: none;
  padding: 6px 14px;
  border-radius: 999px;
  background: transparent;
  color: inherit;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.theme-toggle-btn.is-active {
  background: var(--color-bg-light-elevated);
  color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-strong);
  cursor: default;
}

body.theme-dark .theme-toggle-btn.is-active {
  background: #111827;
}

.theme-toggle-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.theme-toggle-btn:is(:disabled) {
  opacity: 1;
}

.app-main {
  max-width: 1120px;
  width: 100%;
  margin: 0 auto 40px auto;
  padding: 0 20px 24px 20px;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  grid-template-rows: auto auto;
  grid-template-areas:
    "input detected"
    "output output";
  gap: 16px;
}

@media (max-width: 960px) {
  .app-main {
    grid-template-columns: 1fr;
    grid-template-areas:
      "input"
      "detected"
      "output";
  }
}

.panel {
  border-radius: var(--radius-lg);
  padding: 18px 18px 16px 18px;
  background: var(--color-bg-light-elevated);
  border: 1px solid var(--color-border-subtle-light);
  box-shadow: var(--shadow-soft);
}

body.theme-dark .panel {
  background: var(--color-bg-dark-elevated);
  border-color: var(--color-border-subtle-dark);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.6);
}

.panel:nth-of-type(1) {
  grid-area: input;
}

.panel:nth-of-type(2) {
  grid-area: detected;
}

.panel:nth-of-type(3) {
  grid-area: output;
}

.panel-header {
  margin-bottom: 12px;
}

.panel-header h2 {
  margin: 0 0 4px 0;
  font-size: 15px;
  letter-spacing: -0.01em;
}

.panel-description {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-muted-light);
}

body.theme-dark .panel-description {
  color: var(--color-text-muted-dark);
}

.editor {
  min-height: 180px;
  max-height: 340px;
  overflow-y: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle-light);
  padding: 10px 12px;
  font-size: 14px;
  background: radial-gradient(circle at top left, #f9fafb 0, #f3f4ff 48%, #f9fafb 100%);
  color: var(--color-text-light);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease,
    background 0.15s ease, color 0.15s ease;
}

.editorOutput {
  min-height: 180px;
  max-height: 340px;
  overflow-y: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle-light);
  padding: 10px 12px;
  font-size: 14px;
  background: radial-gradient(circle at top left, #f9fafb 0, #f3f4ff 48%, #f9fafb 100%);
  color: var(--color-text-light);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease,
    background 0.15s ease, color 0.15s ease;
}

body.theme-dark .editor {
  background: radial-gradient(circle at top left, #020617 0, #020617 60%, #020617 100%);
  color: var(--color-text-dark);
  border-color: var(--color-border-subtle-dark);
}

.editor:focus-visible {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent-soft);
}

.editor:empty::before {
  content: "Paste here from Word, Google Docs, PDFs, email, or the web…";
  color: var(--color-text-muted-light);
}

.editorOutput:empty::before {
  content: "You'll see your output here";
  color: var(--color-text-muted-light);
}

body.theme-dark .editor:empty::before {
  color: var(--color-text-muted-dark);
}

body.theme-dark .editorOutput:empty::before {
  color: var(--color-text-muted-dark);
}

.panel-footer {
  margin-top: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

@media (max-width: 640px) {
  .panel-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

.primary-btn,
.secondary-btn {
  border-radius: 999px;
  border: none;
  padding: 7px 16px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease,
    transform 0.05s ease, border-color 0.15s ease;
}

.primary-btn {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(79, 70, 229, 0.35);
}

.primary-btn:hover:not(:disabled) {
  transform: translateY(-0.5px);
  box-shadow: 0 14px 30px rgba(79, 70, 229, 0.4);
}

.primary-btn:active:not(:disabled) {
  transform: translateY(0.5px);
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
}

.secondary-btn {
  background: rgba(15, 23, 42, 0.02);
  color: inherit;
  border: 1px solid var(--color-border-subtle-light);
}

body.theme-dark .secondary-btn {
  background: rgba(15, 23, 42, 0.8);
  border-color: var(--color-border-subtle-dark);
}

.secondary-btn:hover:not(:disabled) {
  background: rgba(15, 23, 42, 0.06);
}

body.theme-dark .secondary-btn:hover:not(:disabled) {
  background: rgba(15, 23, 42, 0.9);
}

.primary-btn:focus-visible,
.secondary-btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.primary-btn:disabled,
.secondary-btn:disabled {
  opacity: 0.5;
  cursor: default;
  box-shadow: none;
}

.hint {
  margin: 0;
  font-size: 11px;
  color: var(--color-text-muted-light);
}

body.theme-dark .hint {
  color: var(--color-text-muted-dark);
}

.detected-list {
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 260px;
  overflow-y: auto;
}

.detected-list.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--color-border-subtle-light);
  padding: 10px 12px;
}

body.theme-dark .detected-list.empty-state {
  border-color: var(--color-border-subtle-dark);
}

.empty-message {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-muted-light);
  text-align: center;
}

body.theme-dark .empty-message {
  color: var(--color-text-muted-dark);
}

.detected-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 9px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle-light);
  background: rgba(249, 250, 251, 0.9);
}

body.theme-dark .detected-item {
  background: rgba(15, 23, 42, 0.8);
  border-color: var(--color-border-subtle-dark);
}

.detected-label {
  min-width: 90px;
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text-muted-light);
}

body.theme-dark .detected-label {
  color: var(--color-text-muted-dark);
}

.detected-preview {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(148, 163, 184, 0.12);
}

.color-swatch {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  border: 1px solid rgba(15, 23, 42, 0.18);
}

body.theme-dark .color-swatch {
  border-color: rgba(148, 163, 184, 0.7);
}

.detected-input-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.detected-input {
  flex: 1;
  min-width: 0;
  max-width: 220px;
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle-light);
  padding: 4px 10px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.96);
  color: inherit;
}

body.theme-dark .detected-input {
  border-color: var(--color-border-subtle-dark);
  background: rgba(15, 23, 42, 0.9);
}

.detected-input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.detected-input-hint {
  font-size: 11px;
  color: var(--color-text-muted-light);
}

body.theme-dark .detected-input-hint {
  color: var(--color-text-muted-dark);
}

.output-controls {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.output-controls-main {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.output-block {
  margin-bottom: 10px;
}

.output-label {
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted-light);
  margin-bottom: 4px;
}

body.theme-dark .output-label {
  color: var(--color-text-muted-dark);
}

.output-editor {
  min-height: 110px;
  max-height: 220px;
  overflow-y: auto;
  cursor: text;
  white-space: pre-wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
}

.output-preview {
  min-height: 110px;
  max-height: 220px;
  overflow-y: auto;
  cursor: default;
  white-space: pre-wrap;
}

.semantic-tag {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  font-size: 0.85em;
  color: var(--color-accent);
  background: var(--color-accent-soft);
  padding: 1px 4px;
  border-radius: 3px;
  margin: 0 2px;
  font-weight: 500;
  display: inline;
}

body.theme-dark .semantic-tag {
  color: #818cf8;
  background: rgba(129, 140, 248, 0.16);
}

.copy-status {
  font-size: 11px;
  color: var(--color-text-muted-light);
}

body.theme-dark .copy-status {
  color: var(--color-text-muted-dark);
}

/* Generic focus styles for keyboard accessibility */
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
[contenteditable]:focus-visible {
  scroll-margin: 12px;
}

.feedback-bar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--color-text-muted-light);
  margin-left: auto;
}

body.theme-dark .feedback-bar {
  color: var(--color-text-muted-dark);
}

.feedback-label {
  font-weight: 500;
}

.feedback-label-inline {
  font-size: 12px;
}

.feedback-buttons {
  display: inline-flex;
  gap: 6px;
}

.feedback-btn {
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle-light);
  padding: 4px 10px;
  font-size: 12px;
  background: rgba(15, 23, 42, 0.02);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

body.theme-dark .feedback-btn {
  border-color: var(--color-border-subtle-dark);
  background: rgba(15, 23, 42, 0.9);
}

.feedback-btn:hover {
  background: rgba(15, 23, 42, 0.06);
}

body.theme-dark .feedback-btn:hover {
  background: rgba(15, 23, 42, 1);
}

.feedback-status {
  font-size: 11px;
}

.feedback-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 40;
}

.feedback-modal.is-open {
  display: flex;
}

.feedback-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(2px);
}

.feedback-modal-content {
  position: relative;
  z-index: 41;
  width: 100%;
  max-width: 380px;
  border-radius: var(--radius-lg);
  padding: 16px 18px 14px 18px;
  background: var(--color-bg-light-elevated);
  border: 1px solid var(--color-border-subtle-light);
  box-shadow: var(--shadow-soft);
}

body.theme-dark .feedback-modal-content {
  background: var(--color-bg-dark-elevated);
  border-color: var(--color-border-subtle-dark);
}

.feedback-modal-title {
  margin: 0 0 6px 0;
  font-size: 15px;
}

.feedback-modal-description {
  margin: 0 0 10px 0;
  font-size: 12px;
  color: var(--color-text-muted-light);
}

body.theme-dark .feedback-modal-description {
  color: var(--color-text-muted-dark);
}

.feedback-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feedback-input-label {
  font-size: 12px;
}

.feedback-input {
  border-radius: 999px;
  border: 1px solid var(--color-border-subtle-light);
  padding: 5px 10px;
  font-size: 13px;
}

body.theme-dark .feedback-input {
  border-color: var(--color-border-subtle-dark);
  background: rgba(15, 23, 42, 0.9);
  color: var(--color-text-dark);
}

.feedback-input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.feedback-modal-actions {
  margin-top: 4px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}