:root {
  color-scheme: light dark;
  --bg-color: #f4f6fb;
  --panel-bg: #ffffff;
  --border-color: #d5daee;
  --accent-color: #3f51b5;
  --accent-color-dark: #3041a8;
  --accent-bg: rgba(63, 81, 181, 0.12);
  --text-color: #1c2143;
  --sub-text-color: #5f6581;
  --status-idle: #4b5563;
  --status-connecting: #b45309;
  --status-connected: #166534;
  --status-error: #b91c1c;
  --status-idle-bg: #f3f4f6;
  --status-connecting-bg: #fff7ed;
  --status-connected-bg: #e6f4ea;
  --status-error-bg: #fee2e2;
  --status-idle-border: #d1d5db;
  --status-connecting-border: #fed7aa;
  --status-connected-border: #bbf7d0;
  --status-error-border: #fecaca;
  --shadow-sm: 0 2px 4px rgba(15, 23, 42, 0.12);
  --shadow-md: 0 6px 18px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Roboto', 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--accent-color);
  color: #fefefe;
  gap: 12px;
  box-shadow: var(--shadow-sm);
}

.toolbar h1 {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toolbar .actions button {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

.toolbar .actions button:hover {
  background: rgba(255, 255, 255, 0.28);
  box-shadow: var(--shadow-sm);
}

button {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--accent-color);
  background: var(--accent-color);
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
}

button:hover {
  background: var(--accent-color-dark);
  box-shadow: var(--shadow-sm);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  box-shadow: none;
}

.content {
  flex: 1 1 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.panel {
  background: var(--panel-bg);
  border: 1px solid rgba(63, 81, 181, 0.12);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel h2::after {
  content: '';
  flex: 0 0 32px;
  height: 3px;
  border-radius: 999px;
  background: var(--accent-color);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.panel-header h2 {
  margin-bottom: 0;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px 6px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid var(--status-border, rgba(255, 255, 255, 0.4));
  background: var(--status-bg, rgba(255, 255, 255, 0.2));
  color: var(--status-fg, var(--text-color));
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease;
}

.status::before {
  content: '';
  display: inline-block;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 999px;
  background: currentColor;
  box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.04);
}

.status:hover {
  transform: translateY(-1px);
}

.status-idle {
  --status-fg: var(--status-idle);
  --status-bg: var(--status-idle-bg);
  --status-border: var(--status-idle-border);
}

.status-connecting {
  --status-fg: var(--status-connecting);
  --status-bg: var(--status-connecting-bg);
  --status-border: var(--status-connecting-border);
}

.status-connected {
  --status-fg: var(--status-connected);
  --status-bg: var(--status-connected-bg);
  --status-border: var(--status-connected-border);
}

.status-saving {
  --status-fg: var(--accent-color);
  --status-bg: rgba(63, 81, 181, 0.12);
  --status-border: rgba(63, 81, 181, 0.35);
}

.status-error {
  --status-fg: var(--status-error);
  --status-bg: var(--status-error-bg);
  --status-border: var(--status-error-border);
}

.layer-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.layer-tab {
  background: rgba(63, 81, 181, 0.08);
  color: var(--accent-color);
  border: 1px solid rgba(63, 81, 181, 0.2);
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.layer-tab:hover {
  background: rgba(63, 81, 181, 0.18);
}

.layer-tab.active {
  background: var(--accent-color);
  border-color: transparent;
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.layer-tab.dirty {
  border-color: rgba(251, 140, 0, 0.8);
  color: #fb8c00;
  background: rgba(251, 140, 0, 0.16);
}

.layer-tab.active.dirty {
  background: #fb8c00;
  border-color: transparent;
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.keyboard-container {
  position: relative;
  overflow: auto;
  padding: 16px;
  background: #ffffff;
  border-radius: 12px;
  min-height: 260px;
  border: 1px solid rgba(63, 81, 181, 0.1);
  box-shadow: var(--shadow-sm);
}

.keyboard {
  position: relative;
  --unit-x: 60px;
  --unit-y: calc(var(--unit-x) * 0.66);
  margin: 0 auto;
}

.keyboard::after {
  content: attr(data-hint);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--sub-text-color);
  font-size: 0.95rem;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  padding: 16px;
  text-align: center;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 12px;
}

.keyboard[data-hint]:not([data-hint=""])::after {
  opacity: 1;
}

.key {
  position: absolute;
  left: calc(var(--x) * var(--unit-x));
  top: calc(var(--y) * var(--unit-y));
  width: calc(var(--w) * var(--unit-x));
  height: calc(var(--h) * var(--unit-y));
  border-radius: 14px;
  border: 1px solid rgba(63, 81, 181, 0.14);
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6px;
  color: var(--text-color);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease, background 0.2s ease;
}

.key:focus-visible {
  outline: none;
  border-color: rgba(63, 81, 181, 0.45);
  box-shadow: 0 10px 24px rgba(63, 81, 181, 0.22);
}

.key:hover {
  border-color: rgba(63, 81, 181, 0.35);
  background: rgba(63, 81, 181, 0.12);
  box-shadow: 0 8px 18px rgba(63, 81, 181, 0.18);
  z-index: 3;
}

.key.selected {
  border-color: rgba(63, 81, 181, 0.45);
  background: rgba(63, 81, 181, 0.16);
  box-shadow: 0 10px 24px rgba(63, 81, 181, 0.22);
  z-index: 4;
}

.key.selected::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 18px;
  border: 2px solid rgba(63, 81, 181, 0.65);
  pointer-events: none;
}

.key.key-unsaved {
  border-color: #fb8c00;
  background: rgba(251, 140, 0, 0.16);
  box-shadow: var(--shadow-sm);
}

.key.key-unsaved.selected {
  border-color: #fb8c00;
  background: rgba(251, 140, 0, 0.24);
  box-shadow: var(--shadow-md);
}

.key.key-transparent {
  border-style: dashed;
}

.key.key-none {
  border-style: dotted;
  opacity: 0.85;
}

.key-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 100%;
  line-height: 1.1;
}

.key-label-main {
  font-size: 0.95rem;
  font-weight: 600;
  word-break: break-word;
}

.key-label-secondary {
  font-size: 0.78rem;
  color: var(--sub-text-color);
  word-break: break-word;
}

.key-label-footnote {
  font-size: 0.7rem;
  color: var(--sub-text-color);
  opacity: 0.8;
  word-break: break-word;
}

.key-detail-body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  color: var(--text-color);
}

.key-detail-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.key-detail-summary-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 14px;
  border: 1px solid rgba(63, 81, 181, 0.12);
  border-radius: 12px;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  min-height: 72px;
}

.key-detail-summary-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--sub-text-color);
}

.key-detail-summary-value {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.key-detail-summary-value-base {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-color);
  word-break: break-word;
  white-space: pre-wrap;
}

.key-detail-summary-value-pending {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-color);
  word-break: break-word;
  white-space: pre-wrap;
}

.key-detail-summary-pending-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.key-detail-summary-lines {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.key-detail-summary-empty {
  font-size: 0.9rem;
  color: var(--sub-text-color);
}

.key-detail-summary-line {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 6px;
}

.key-detail-summary-line-label {
  min-width: 3.2rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--sub-text-color);
}

.key-detail-summary-line-arrow {
  font-size: 0.85rem;
  color: var(--sub-text-color);
  width: 0.9rem;
  text-align: center;
}

.key-detail-summary-line-arrow--hidden {
  visibility: hidden;
}

.key-detail-summary-line-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-color);
  word-break: break-word;
}

.key-detail-summary-value-base .key-detail-summary-lines,
.key-detail-summary-value-pending .key-detail-summary-lines {
  white-space: normal;
}

.key-detail-summary-value-pending .key-detail-summary-line-label,
.key-detail-summary-value-pending .key-detail-summary-line-arrow,
.key-detail-summary-value-pending .key-detail-summary-line-value {
  color: currentColor;
}

.key-detail-explanation {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  border: 1px solid rgba(63, 81, 181, 0.12);
  border-radius: 14px;
  background: #f8f9ff;
  box-shadow: var(--shadow-sm);
}

.key-detail-explanation-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent-color);
}

.key-detail-explanation-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.key-detail-explanation-block-pending {
  border-top: 1px solid rgba(63, 81, 181, 0.12);
  padding-top: 8px;
}

.key-detail-explanation-label {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--sub-text-color);
}

.key-detail-explanation-list {
  margin: 0;
  padding-left: 18px;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid rgba(63, 81, 181, 0.1);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  font-size: 0.95rem;
}

.detail-label {
  font-weight: 600;
  color: var(--sub-text-color);
}

.detail-value {
  flex: 1;
  text-align: right;
  word-break: break-all;
}

.detail-raw-block {
  margin-top: 12px;
  border: 1px solid rgba(63, 81, 181, 0.1);
  border-radius: 10px;
  background: #ffffff;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.detail-raw-title {
  padding: 8px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--sub-text-color);
  border-bottom: 1px solid rgba(63, 81, 181, 0.08);
}

.detail-raw-content {
  margin: 0;
  padding: 12px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
  font-size: 0.75rem;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-color);
}

.key-edit-panel {
  margin-top: 16px;
  padding: 16px;
  border: 1px solid rgba(63, 81, 181, 0.12);
  border-radius: 12px;
  background: #f8f9ff;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
}

.key-edit-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.key-edit-behavior {
  font-weight: 600;
  font-size: 1rem;
}

.key-edit-reset {
  border: 1px solid rgba(63, 81, 181, 0.4);
  background: rgba(63, 81, 181, 0.1);
  color: var(--accent-color);
  padding: 6px 14px;
}

.key-edit-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.key-edit-divider {
  border: none;
  border-top: 1px solid rgba(63, 81, 181, 0.12);
  margin: 12px 0;
}

.key-edit-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.key-edit-field-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--sub-text-color);
}

.key-edit-select {
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid rgba(63, 81, 181, 0.25);
  font-size: 0.95rem;
  background: #ffffff;
}

.key-edit-modifiers {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.key-edit-modifier {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(63, 81, 181, 0.2);
  background: #ffffff;
  font-size: 0.85rem;
}

.key-edit-modifier input {
  margin: 0;
}

.key-edit-helper {
  margin: 4px 0 12px;
  font-size: 0.8rem;
  color: var(--sub-text-color);
  line-height: 1.4;
}

.key-edit-helper-inline {
  font-size: 0.75rem;
  color: var(--sub-text-color);
}

.key-edit-generic-summary {
  margin-top: 12px;
  padding: 12px;
  border-radius: 10px;
  background: rgba(63, 81, 181, 0.08);
  border: 1px solid rgba(63, 81, 181, 0.12);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.key-edit-generic-summary-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--sub-text-color);
  letter-spacing: 0.04em;
}

.key-edit-generic-summary-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-color);
  word-break: break-word;
}

.key-edit-generic-usage-preview {
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--sub-text-color);
  word-break: break-word;
}

.key-edit-two-column {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 8px;
  margin-bottom: 8px;
}

.key-edit-input {
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid rgba(63, 81, 181, 0.25);
  font-size: 0.95rem;
}

.key-edit-preview {
  border-top: 1px solid rgba(63, 81, 181, 0.12);
  padding-top: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.key-edit-preview-label {
  font-size: 0.8rem;
  color: var(--sub-text-color);
}

.key-edit-preview-value {
  font-weight: 600;
  font-size: 0.95rem;
}

.key-edit-message {
  font-size: 0.9rem;
  color: var(--sub-text-color);
  background: rgba(63, 81, 181, 0.08);
  border-radius: 10px;
  padding: 12px;
}

.placeholder {
  color: rgba(0, 0, 0, 0.54);
  font-size: 0.95rem;
}

.footer {
  padding: 12px 24px 24px;
  color: var(--sub-text-color);
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .actions {
    align-self: stretch;
    flex-wrap: wrap;
  }

  .detail-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .detail-value {
    text-align: left;
  }
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.panel-actions button {
  min-width: 140px;
}

.panel-actions button#resetChangesButton {
  background: #ffffff;
  color: #fb8c00;
  border: 1px solid rgba(251, 140, 0, 0.6);
}

.panel-actions button#resetChangesButton:hover {
  background: rgba(251, 140, 0, 0.12);
}

.panel-actions button#resetChangesButton.danger {
  background: #fef3c7;
  color: #b45309;
  border-color: rgba(180, 83, 9, 0.8);
}

.panel-actions button#resetChangesButton.confirm {
  background: #fb8c00;
  color: #ffffff;
  border-color: transparent;
}

.panel-actions button#resetChangesButton.confirm:hover {
  background: #f57c00;
}