/* ============================================================
   Material Design 3 — Pure CSS Implementation
   Password Regex Checker
   ============================================================ */

/* --- Reset --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* --- MD3 Color Tokens (Light) --- */
:root {
  --md-sys-color-primary: #6750a4;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #eaddff;
  --md-sys-color-surface: #fffbfe;
  --md-sys-color-surface-container: #f3edf7;
  --md-sys-color-surface-container-high: #ece6f0;
  --md-sys-color-on-surface: #1c1b1f;
  --md-sys-color-on-surface-variant: #49454f;
  --md-sys-color-outline: #79747e;
  --md-sys-color-outline-variant: #cac4d0;
  --md-sys-color-error: #b3261e;
  --md-sys-color-on-error-container: #8c1d18;
  --md-sys-color-error-container: #f9dedc;
  --md-sys-color-success: #1b5e20;
  --md-sys-color-on-success-container: #1b5e20;
  --md-sys-color-success-container: #c8e6c9;
  --md-sys-color-inverse-surface: #313033;
  --md-sys-color-inverse-on-surface: #f4eff4;
  --md-sys-color-background: #f6f2f7;

  /* Elevation shadows */
  --md-sys-elevation-1: 0 1px 3px 1px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.3);
  --md-sys-elevation-2: 0 2px 6px 2px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.3);

  /* Typography */
  --md-sys-typescale-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --md-sys-typescale-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;

  /* Spacing (4px grid) */
  --md-sys-spacing-xs: 4px;
  --md-sys-spacing-sm: 8px;
  --md-sys-spacing-md: 16px;
  --md-sys-spacing-lg: 24px;
  --md-sys-spacing-xl: 32px;

  /* Shape */
  --md-sys-shape-md: 12px;
  --md-sys-shape-lg: 16px;
  --md-sys-shape-full: 9999px;

  /* Transition */
  --md-sys-motion-duration: 200ms;
  --md-sys-motion-easing: cubic-bezier(0.2, 0, 0, 1);
}

/* --- MD3 Color Tokens (Dark) --- */
@media (prefers-color-scheme: dark) {
  :root {
    --md-sys-color-primary: #d0bcff;
    --md-sys-color-on-primary: #381e72;
    --md-sys-color-primary-container: #4f378b;
    --md-sys-color-surface: #1c1b1f;
    --md-sys-color-surface-container: #211f26;
    --md-sys-color-surface-container-high: #2b2930;
    --md-sys-color-on-surface: #e6e0e8;
    --md-sys-color-on-surface-variant: #cac4d0;
    --md-sys-color-outline: #938f96;
    --md-sys-color-outline-variant: #49454f;
    --md-sys-color-error: #f2b8b5;
    --md-sys-color-on-error-container: #f2b8b5;
    --md-sys-color-error-container: #8c1d18;
    --md-sys-color-success: #81c784;
    --md-sys-color-on-success-container: #81c784;
    --md-sys-color-success-container: #1b5e20;
    --md-sys-color-inverse-surface: #e6e0e8;
    --md-sys-color-inverse-on-surface: #313033;
    --md-sys-color-background: #141218;

    --md-sys-elevation-1: 0 1px 3px 1px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.6);
    --md-sys-elevation-2: 0 2px 6px 2px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.6);
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }
}

/* --- Base --- */
body {
  font-family: var(--md-sys-typescale-body);
  background:
    linear-gradient(180deg, var(--md-sys-color-background) 0%, var(--md-sys-color-surface-container) 100%);
  color: var(--md-sys-color-on-surface);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--md-sys-spacing-xl) var(--md-sys-spacing-md);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* --- Card Container --- */
.container {
  background: var(--md-sys-color-surface);
  border-radius: var(--md-sys-shape-lg);
  box-shadow: var(--md-sys-elevation-2);
  border: 1px solid var(--md-sys-color-outline-variant);
  padding: var(--md-sys-spacing-lg);
  width: 100%;
  max-width: 800px;
}

/* --- Title --- */
h1 {
  font-size: 1.5rem;
  font-weight: 650;
  letter-spacing: 0;
  color: var(--md-sys-color-on-surface);
  margin-bottom: var(--md-sys-spacing-sm);
}

.page-header {
  margin-bottom: var(--md-sys-spacing-lg);
}

.page-header--home {
  margin-bottom: calc(var(--md-sys-spacing-lg) + var(--md-sys-spacing-xs));
}

.page-lead {
  font-size: 0.9375rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.65;
  max-width: 44rem;
}

.content-section {
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-lg);
  padding: var(--md-sys-spacing-lg);
}

.content-section + .content-section {
  margin-top: var(--md-sys-spacing-md);
}

h2 {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  color: var(--md-sys-color-on-surface);
  margin-bottom: var(--md-sys-spacing-md);
}

/* ============================================================
   Shared Inputs
   ============================================================ */
.kana-input,
#password-input,
.email-output {
  width: 100%;
  min-height: 48px;
  padding: 14px var(--md-sys-spacing-md);
  font-size: 1rem;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-md);
  outline: none;
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  caret-color: var(--md-sys-color-primary);
  transition:
    border-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    box-shadow var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.kana-input:focus,
#password-input:focus,
.email-output:focus {
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  padding: 13px 15px;
}

.kana-input:focus-visible,
#password-input:focus-visible,
.email-output:focus-visible {
  outline: 3px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.kana-input.error,
#password-input.error {
  border-color: var(--md-sys-color-error);
}

.kana-input.error:focus,
#password-input.error:focus {
  border-color: var(--md-sys-color-error);
}

#password-input,
.email-output {
  font-family: var(--md-sys-typescale-mono);
}

.email-output {
  font-size: 0.9375rem;
}

/* Valid (all pass) state */
#password-input.valid {
  border-color: var(--md-sys-color-success);
}

#password-input.valid:focus {
  border-color: var(--md-sys-color-success);
}

/* Error (over limit) state */
#password-input.error {
  border-color: var(--md-sys-color-error);
}

#password-input.error:focus {
  border-color: var(--md-sys-color-error);
}

/* --- Supporting Text (counter + error) --- */
.input-supporting {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-top: var(--md-sys-spacing-sm);
  min-height: 24px;
  gap: var(--md-sys-spacing-sm);
}

.input-error {
  font-size: 0.75rem;
  color: var(--md-sys-color-error);
  line-height: 1.3;
}

.char-counter {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-left: auto;
  transition: color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.char-counter.over {
  color: var(--md-sys-color-error);
  font-weight: 600;
}

/* ============================================================
   Check List (Validation Results)
   ============================================================ */
.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--md-sys-spacing-sm);
}

.check-item {
  display: flex;
  align-items: center;
  gap: var(--md-sys-spacing-md);
  padding: 10px var(--md-sys-spacing-md);
  border-radius: var(--md-sys-shape-md);
  background: var(--md-sys-color-surface-container);
  font-size: 0.875rem;
  transition:
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    opacity var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

/* Icon circle */
.check-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--md-sys-shape-full);
  font-size: 0.8125rem;
  font-weight: 700;
  background: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
  transition:
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.check-label {
  color: var(--md-sys-color-on-surface-variant);
  transition: color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

/* Pass state */
.check-item.pass {
  background: var(--md-sys-color-success-container);
}

.check-item.pass .check-icon {
  background: var(--md-sys-color-success);
  color: #ffffff;
}

.check-item.pass .check-label {
  color: var(--md-sys-color-on-success-container);
}

@media (prefers-color-scheme: dark) {
  .check-item.pass .check-icon {
    color: #1b5e20;
  }
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 480px) {
  body {
    padding: var(--md-sys-spacing-md) var(--md-sys-spacing-sm);
  }

  .container {
    padding: var(--md-sys-spacing-md);
    border-radius: var(--md-sys-shape-md);
  }

  h1 {
    font-size: 1.375rem;
  }
}

/* ============================================================
   Back Link
   ============================================================ */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.875rem;
  color: var(--md-sys-color-primary);
  text-decoration: none;
  margin-bottom: var(--md-sys-spacing-md);
  border-radius: var(--md-sys-shape-full);
  padding: 4px 8px;
  margin-left: -8px;
  transition: background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.back-link:hover {
  background-color: rgba(103, 80, 164, 0.08);
}

.back-link:focus-visible {
  outline: 3px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

@media (prefers-color-scheme: dark) {
  .back-link:hover {
    background-color: rgba(208, 188, 255, 0.08);
  }
}

/* ============================================================
   Top Page — Tool List Cards
   ============================================================ */
.top-subtitle {
  margin-top: 0;
}

.tool-list {
  display: flex;
  flex-direction: column;
  gap: var(--md-sys-spacing-sm);
}

.tool-card {
  display: flex;
  align-items: center;
  gap: var(--md-sys-spacing-md);
  padding: 18px;
  background: linear-gradient(180deg, var(--md-sys-color-surface-container) 0%, var(--md-sys-color-surface) 100%);
  border-radius: var(--md-sys-shape-lg);
  border: 1px solid var(--md-sys-color-outline-variant);
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  transition:
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    box-shadow var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    border-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    transform var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.tool-card:hover {
  background: var(--md-sys-color-surface-container-high);
  box-shadow: var(--md-sys-elevation-1);
  border-color: var(--md-sys-color-primary-container);
  transform: translateY(-1px);
}

.tool-card:focus-visible {
  outline: 3px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.tool-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--md-sys-color-primary-container);
  border-radius: 14px;
  flex-shrink: 0;
  color: var(--md-sys-color-primary);
}

.tool-card-body {
  flex: 1;
  min-width: 0;
}

.tool-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 4px;
}

.tool-card-desc {
  font-size: 0.875rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.5;
}

.tool-card-arrow {
  flex-shrink: 0;
  color: var(--md-sys-color-on-surface-variant);
  display: flex;
  align-items: center;
}

/* ============================================================
   Email Generator — Kana Input Fields
   ============================================================ */
.field-row {
  display: flex;
  gap: var(--md-sys-spacing-md);
}

.field-row .field-item {
  flex: 1;
  min-width: 0;
}

@media (max-width: 360px) {
  .field-row {
    flex-direction: column;
  }
}

.field-item {
  display: flex;
  flex-direction: column;
}

.field-item--single {
  width: 100%;
}

.field-hint {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-top: var(--md-sys-spacing-sm);
}

.field-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 6px;
}

.field-error {
  font-size: 0.75rem;
  color: var(--md-sys-color-error);
  min-height: 20px;
  padding-top: 4px;
  line-height: 1.3;
}

/* ============================================================
   Email Generator — Output & Copy Button
   ============================================================ */
.email-output-wrapper {
  display: flex;
  gap: var(--md-sys-spacing-md);
  align-items: flex-end;
}

.copy-btn {
  min-height: 48px;
  padding: 0 18px;
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border: none;
  border-radius: var(--md-sys-shape-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
  min-width: 72px;
  transition:
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    opacity var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.copy-btn:hover {
  opacity: 0.92;
}

.copy-btn:focus-visible {
  outline: 3px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.copy-btn:active {
  opacity: 0.8;
}

.copy-btn.copied {
  background: var(--md-sys-color-success);
}

.copy-btn:disabled {
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  cursor: default;
  opacity: 1;
}

@media (prefers-color-scheme: dark) {
  .copy-btn.copied {
    color: #1b5e20;
  }
}

/* ============================================================
   Password Section
   ============================================================ */
.pwd-section {
  margin-top: 0;
}

.regen-btn {
  min-height: 48px;
  padding: 0 18px;
  background: transparent;
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-primary);
  border-radius: var(--md-sys-shape-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
  min-width: 72px;
  transition:
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.regen-btn:hover {
  background-color: rgba(103, 80, 164, 0.08);
}

.regen-btn:focus-visible {
  outline: 3px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

@media (prefers-color-scheme: dark) {
  .regen-btn:hover {
    background-color: rgba(208, 188, 255, 0.08);
  }
}

.phonetic-wrapper {
  display: flex;
  align-items: stretch;
  gap: var(--md-sys-spacing-sm);
  margin-top: var(--md-sys-spacing-sm);
}

.phonetic-text {
  flex: 1;
  font-size: 0.8125rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.6;
  padding: 10px var(--md-sys-spacing-md);
  background: var(--md-sys-color-surface);
  border-radius: var(--md-sys-shape-md);
  border: 1px solid var(--md-sys-color-outline-variant);
  word-break: break-all;
}

.copy-btn--sm {
  min-width: 64px;
  font-size: 0.8125rem;
  padding: 0 var(--md-sys-spacing-sm);
}

/* ============================================================
   Conversion Warning
   ============================================================ */
.conversion-warning[hidden] {
  display: none;
}

.conversion-warning {
  display: flex;
  align-items: flex-start;
  gap: var(--md-sys-spacing-sm);
  margin-top: var(--md-sys-spacing-sm);
  padding: 10px var(--md-sys-spacing-md);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-sys-shape-md);
  border: 1px solid var(--md-sys-color-outline-variant);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.conversion-warning svg {
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================================
   Reference Note
   ============================================================ */
.reference-note {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  margin-top: var(--md-sys-spacing-md);
  padding: 0 var(--md-sys-spacing-xs);
}

.reference-note a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
}

.reference-note a:hover {
  text-decoration: underline;
}

.reference-note a:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ============================================================
   Batch Generator — Drop Zone
   ============================================================ */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--md-sys-spacing-sm);
  padding: var(--md-sys-spacing-xl) var(--md-sys-spacing-md);
  border: 2px dashed var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-lg);
  background: var(--md-sys-color-surface);
  transition:
    border-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.drop-zone.drag-over {
  border-color: var(--md-sys-color-primary);
  background: var(--md-sys-color-primary-container);
}

.drop-zone-icon {
  color: var(--md-sys-color-on-surface-variant);
}

.drop-zone-text {
  font-size: 0.9375rem;
  color: var(--md-sys-color-on-surface);
  font-weight: 500;
}

.drop-zone-or {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
}

.file-select-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 var(--md-sys-spacing-lg);
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border: none;
  border-radius: var(--md-sys-shape-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: opacity var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.file-select-btn:hover {
  opacity: 0.92;
}

/* --- Sample Link --- */
.sample-link {
  color: var(--md-sys-color-primary);
  text-decoration: none;
  font-weight: 500;
}

.sample-link:hover {
  text-decoration: underline;
}

/* --- Paste Section --- */
.paste-section {
  margin-top: var(--md-sys-spacing-md);
}

.paste-toggle {
  font-size: 0.875rem;
  color: var(--md-sys-color-primary);
  cursor: pointer;
  font-weight: 500;
  padding: var(--md-sys-spacing-sm) 0;
}

.paste-toggle:hover {
  text-decoration: underline;
}

.csv-textarea {
  width: 100%;
  min-height: 120px;
  margin-top: var(--md-sys-spacing-sm);
  padding: var(--md-sys-spacing-md);
  font-family: var(--md-sys-typescale-mono);
  font-size: 0.875rem;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-md);
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  resize: vertical;
  outline: none;
  transition: border-color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.csv-textarea:focus {
  border-color: var(--md-sys-color-primary);
  border-width: 2px;
  padding: calc(var(--md-sys-spacing-md) - 1px);
}

/* --- Action Buttons --- */
.action-btn {
  min-height: 40px;
  padding: 0 var(--md-sys-spacing-lg);
  background: transparent;
  color: var(--md-sys-color-primary);
  border: 1px solid var(--md-sys-color-primary);
  border-radius: var(--md-sys-shape-full);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  margin-top: var(--md-sys-spacing-sm);
  transition: background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.action-btn:hover {
  background-color: rgba(103, 80, 164, 0.08);
}

.action-btn--primary {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  border-color: var(--md-sys-color-primary);
}

.action-btn--primary:hover {
  opacity: 0.92;
  background: var(--md-sys-color-primary);
}

.action-btn--text {
  border: none;
  color: var(--md-sys-color-on-surface-variant);
}

.action-btn--text:hover {
  background-color: rgba(0, 0, 0, 0.04);
}

@media (prefers-color-scheme: dark) {
  .action-btn:hover {
    background-color: rgba(208, 188, 255, 0.08);
  }

  .action-btn--text:hover {
    background-color: rgba(255, 255, 255, 0.06);
  }
}

/* --- File Feedback --- */
.file-feedback {
  margin-top: var(--md-sys-spacing-sm);
  padding: 10px var(--md-sys-spacing-md);
  font-size: 0.8125rem;
  color: var(--md-sys-color-on-success-container);
  background: var(--md-sys-color-success-container);
  border-radius: var(--md-sys-shape-md);
  line-height: 1.4;
}

/* --- Warning List --- */
.warning-list {
  margin-bottom: var(--md-sys-spacing-md);
}

.warning-item {
  font-size: 0.8125rem;
  color: var(--md-sys-color-on-surface);
  background: var(--md-sys-color-primary-container);
  padding: 8px var(--md-sys-spacing-md);
  border-radius: var(--md-sys-shape-md);
  line-height: 1.4;
  margin-bottom: var(--md-sys-spacing-xs);
}

/* --- Error List --- */
.error-list {
  margin-bottom: var(--md-sys-spacing-md);
}

.error-item {
  font-size: 0.8125rem;
  color: var(--md-sys-color-error);
  padding: 6px 0;
  line-height: 1.4;
}

/* --- Result Table --- */
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-md);
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.result-table th,
.result-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  white-space: nowrap;
}

.result-table th {
  background: var(--md-sys-color-surface-container-high);
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  position: sticky;
  top: 0;
}

.result-table tbody tr:last-child td {
  border-bottom: none;
}

.result-table tbody tr:hover {
  background: var(--md-sys-color-surface-container);
}

.result-table .mono {
  font-family: var(--md-sys-typescale-mono);
}

.result-table .phonetic-cell {
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-variant);
  white-space: normal;
  min-width: 200px;
}

/* --- Result Actions --- */
.result-actions {
  display: flex;
  gap: var(--md-sys-spacing-sm);
  flex-wrap: wrap;
  margin-top: var(--md-sys-spacing-md);
}

.result-actions .action-btn {
  margin-top: 0;
}

/* --- Row Copy Button --- */
.row-copy-btn {
  padding: 4px 10px;
  font-size: 0.75rem;
  font-family: inherit;
  font-weight: 500;
  color: var(--md-sys-color-primary);
  background: transparent;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-full);
  cursor: pointer;
  white-space: nowrap;
  transition:
    background-color var(--md-sys-motion-duration) var(--md-sys-motion-easing),
    border-color var(--md-sys-motion-duration) var(--md-sys-motion-easing);
}

.row-copy-btn:hover {
  background-color: rgba(103, 80, 164, 0.08);
  border-color: var(--md-sys-color-primary);
}

.row-copy-btn.copied {
  background: var(--md-sys-color-success);
  color: #ffffff;
  border-color: var(--md-sys-color-success);
}

@media (prefers-color-scheme: dark) {
  .row-copy-btn:hover {
    background-color: rgba(208, 188, 255, 0.08);
  }

  .row-copy-btn.copied {
    color: #1b5e20;
  }
}

/* --- Duplicate Row --- */
.duplicate-row {
  background: rgba(103, 80, 164, 0.06);
}

.duplicate-row:hover {
  background: rgba(103, 80, 164, 0.1);
}

/* --- Header Toggle --- */
.header-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  white-space: nowrap;
}

.header-toggle input[type="checkbox"] {
  accent-color: var(--md-sys-color-primary);
  width: 16px;
  height: 16px;
}