:root {
  --color-bg: #faf7f4;
  --color-surface: #ffffff;
  --color-border: #e8ddd4;
  --color-text: #3d3530;
  --color-text-muted: #8a7f78;
  --color-accent: #c4847a;
  --color-accent-soft: #f3e8e4;
  --color-accent-dark: #a66a60;
  --font-ui: 'Noto Sans JP', sans-serif;
  --font-mincho: 'Noto Serif JP', serif;
  --font-gothic: 'Noto Sans JP', sans-serif;
  --font-hand: 'Zen Kurenaido', cursive;
  --radius: 12px;
  --shadow: 0 2px 12px rgba(61, 53, 48, 0.08);
}

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

body {
  margin: 0;
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
}

.app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0;
}

.app-body {
  padding: 1.5rem 1rem 0;
}

.site-header {
  text-align: center;
  margin-bottom: 2rem;
}

.site-title {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  letter-spacing: 0.08em;
}

.site-lead {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 1.5rem;
  align-items: start;
}

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

.panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.panel-input {
  padding: 1.25rem;
}

.panel-preview {
  padding: 1.25rem;
  min-height: 400px;
}

.input-section + .input-section {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.section-title {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-accent-dark);
}

.section-header .section-title {
  margin-bottom: 0;
}

.section-hint {
  margin: -0.25rem 0 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.field-group {
  margin-bottom: 0.75rem;
}

.field-group:last-child {
  margin-bottom: 0;
}

.field-label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.field-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-bg);
  transition: border-color 0.15s;
}

.field-input:focus {
  outline: none;
  border-color: var(--color-accent);
  background: var(--color-surface);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.9rem;
  border: none;
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn-secondary {
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.btn-secondary:hover {
  background: #ead9d4;
}

.btn-sm {
  padding: 0.3rem 0.65rem;
  font-size: 0.8rem;
}

.btn-remove {
  background: transparent;
  color: var(--color-text-muted);
  padding: 0.2rem 0.5rem;
  font-size: 0.8rem;
}

.btn-remove:hover {
  color: var(--color-accent-dark);
}

.candidate-card,
.family-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 0.85rem;
  margin-bottom: 0.75rem;
}

.candidate-card:last-child,
.family-card:last-child {
  margin-bottom: 0;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
}

.card-title {
  margin: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-accent-dark);
}

.card-header--inline {
  margin-bottom: 0;
  gap: 0.5rem;
}

.card-header--inline .field-input {
  flex: 1;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
}

.checkbox-label:last-child {
  margin-bottom: 0;
}

.checkbox-label input {
  accent-color: var(--color-accent);
}

.preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.compare-layout-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.slider-toggle {
  position: relative;
  display: inline-flex;
  padding: 0.2rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
}

.slider-toggle-indicator {
  position: absolute;
  top: 0.2rem;
  left: 0;
  height: calc(100% - 0.4rem);
  background: var(--color-surface);
  border-radius: 999px;
  box-shadow: 0 1px 4px rgba(61, 53, 48, 0.12);
  transition: transform 0.2s ease, width 0.2s ease;
  pointer-events: none;
}

.slider-toggle-btn {
  position: relative;
  z-index: 1;
  border: none;
  background: transparent;
  padding: 0.35rem 0.85rem;
  font: inherit;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: 999px;
  transition: color 0.2s ease;
}

.slider-toggle-btn.is-active {
  color: var(--color-accent-dark);
  font-weight: 700;
}

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

.hidden {
  display: none !important;
}

.preview-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
  color: var(--color-text-muted);
  text-align: center;
}

.preview-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.candidate-preview-block {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
}

.candidate-preview-block[data-candidate-index] {
  scroll-margin-top: 1rem;
}

.candidate-preview-block + .candidate-preview-block {
  margin-top: 0;
}

.block-title {
  margin: 0;
  padding: 0.6rem 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  padding: 1rem;
}

.preview-item {
  background: var(--color-bg);
  border-radius: 8px;
  padding: 0.85rem;
}

.preview-label {
  margin: 0 0 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: none;
  letter-spacing: 0.05em;
}

.preview-value {
  margin: 0;
  word-break: break-all;
}

.preview-value--horizontal {
  font-size: 1.6rem;
  letter-spacing: 0.15em;
}

.preview-value--vertical {
  writing-mode: vertical-rl;
  text-orientation: upright;
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  height: 8em;
  margin: 0 auto;
}

.preview-value--yomi {
  font-size: 1.4rem;
  letter-spacing: 0.08em;
}

.preview-value--alpha {
  font-size: 1.2rem;
  letter-spacing: 0.04em;
}

.preview-value--font-mincho {
  font-family: var(--font-mincho);
  font-size: 1.5rem;
  letter-spacing: 0.12em;
}

.preview-value--font-gothic {
  font-family: var(--font-gothic);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
}

.preview-value--font-hand {
  font-family: var(--font-hand);
  font-size: 1.7rem;
  letter-spacing: 0.06em;
}

.alpha-pair {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.alpha-pattern {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.name-stack {
  display: inline-block;
  font-size: 1.5rem;
  letter-spacing: 0.12em;
  line-height: 1.9;
}

.name-stack-line {
  display: flex;
  align-items: baseline;
  margin: 0;
}

.name-stack-prefix {
  flex-shrink: 0;
  white-space: pre;
}

.name-stack-prefix--hidden {
  visibility: hidden;
}

.name-stack-given {
  flex-shrink: 0;
}

.name-stack-line--baby .name-stack-given {
  color: var(--color-accent-dark);
  font-weight: 700;
}

.app-footer {
  margin-top: 2rem;
  padding: 20px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.app-footer-copyright {
  margin: 0 0 8px 0;
}

.app-footer-copyright a {
  color: var(--color-text);
  text-decoration: none;
}

.app-footer-copyright a:hover {
  text-decoration: underline;
}

.app-footer-links {
  margin: 0;
}

.app-footer-links a {
  color: var(--color-text);
  text-decoration: none;
}

.app-footer-links a:hover {
  text-decoration: underline;
}

.app-footer-sep {
  margin: 0 0.5em;
  color: var(--color-text-muted);
}

.compare-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.compare-grid .candidate-preview-block {
  margin: 0;
}

.compare-grid .preview-grid {
  grid-template-columns: 1fr;
}

.compare-by-display .preview-grid {
  grid-template-columns: 1fr;
}

.candidate-compare-row {
  display: flex;
  gap: 0.75rem;
}

.candidate-compare-row--stack {
  flex-direction: column;
  align-items: flex-start;
}

.candidate-compare-row--inline {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: flex-start;
}

.candidate-compare-cell {
  min-width: 0;
}

.candidate-compare-row--inline .candidate-compare-cell {
  flex: 0 0 auto;
}

.candidate-compare-label {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-accent-dark);
}

.candidate-compare-row--inline .preview-value--vertical {
  height: auto;
  min-height: 6em;
  margin: 0;
}

.candidate-compare-row--stack .preview-value--vertical {
  height: auto;
  min-height: 6em;
  margin: 0;
}

@media (max-width: 600px) {
  .preview-grid {
    grid-template-columns: 1fr;
  }
}

.fab,
.fab-candidate-nav {
  display: none;
}

@media (max-width: 900px) {
  .app-body {
    padding-bottom: 5rem;
  }

  .fab-top {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    z-index: 200;
    width: 3rem;
    height: 3rem;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    background: var(--color-surface);
    color: var(--color-accent-dark);
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1;
    box-shadow: var(--shadow);
    cursor: pointer;
  }

  .fab-top:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  .fab-candidate-nav {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    position: fixed;
    left: 1rem;
    bottom: 1rem;
    z-index: 200;
    max-width: calc(100vw - 5.5rem);
    max-height: calc(100vh - 6rem);
    overflow-y: auto;
  }

  .fab-candidate-nav.hidden {
    display: none !important;
  }

  .fab-candidate-link {
    display: block;
    max-width: 100%;
    padding: 0.45rem 0.85rem;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    background: var(--color-surface);
    color: var(--color-accent-dark);
    font: inherit;
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1.35;
    text-align: left;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow: var(--shadow);
    cursor: pointer;
  }

  .fab-candidate-link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }
}