:root {
  color-scheme: light;
  --password-background: #f4f6f8;
  --password-surface: #ffffff;
  --password-surface-2: #f6f8fa;
  --password-border: #d0d7de;
  --password-text: #1f2328;
  --password-muted: #57606a;
  --password-accent: #0969da;
  --password-accent-hover: #0757b5;
  --password-success: #1a7f37;
  --password-warning: #9a6700;
  --password-danger: #cf222e;
  --password-shadow: 0 14px 36px rgba(31, 35, 40, .08);
  --password-control-height: 40px;
  --password-control-radius: 8px;
  --password-panel-radius: 12px;
  --password-panel-gap: 16px;
}

/* ページ基本設定 */
.password-generator-page,
.password-generator-page * {
  box-sizing: border-box;
}

.password-generator-page {
  margin: 0;
  min-height: 100vh;
  color: var(--password-text);
  background: var(--password-background);
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
}

.password-generator-main {
  width: min(1080px, calc(100% - 40px));
  margin: 0 auto;
  padding: 40px 0;
}

/* ページ見出しとパンくず */
.password-generator-header {
  margin-bottom: 18px;
}

.password-generator-header h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.2rem);
}

.password-generator-header p {
  margin: 8px 0 0;
  color: var(--password-muted);
  line-height: 1.7;
}

.password-generator-main .password-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  color: var(--password-muted);
  font-size: .9rem;
}

.password-generator-main a {
  color: var(--password-accent);
  font-weight: 700;
  text-decoration: none;
}

.password-generator-main a:hover,
.password-generator-main a:focus-visible {
  text-decoration: underline;
}

/* 共通パネル */
.password-generator-main .password-notice,
.password-generator-main .password-panel {
  margin-bottom: var(--password-panel-gap);
  background: var(--password-surface);
  border: 1px solid var(--password-border);
  border-radius: var(--password-panel-radius);
  box-shadow: var(--password-shadow);
}

.password-generator-main .password-notice {
  padding: 12px 14px;
  color: #0550ae;
  background: #ddf4ff;
  border-color: #b6e3ff;
  line-height: 1.65;
}

.password-generator-main .password-panel {
  padding: 18px;
}

.password-generator-main .password-panel h2 {
  margin: 0 0 14px;
  font-size: 1.1rem;
}

/* 生成設定 */
.password-generator-main .password-settings-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
  gap: 18px;
}

.password-generator-main .password-control-stack {
  display: grid;
  gap: 16px;
}

.password-generator-main .password-field {
  display: grid;
  gap: 7px;
}

.password-generator-main .password-field label,
.password-generator-main .password-field-label {
  color: var(--password-muted);
  font-weight: 700;
}

.password-generator-main .password-field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.password-generator-main .password-length-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 84px;
  gap: 10px;
  align-items: center;
}

.password-generator-main input,
.password-generator-main button,
.password-generator-main progress {
  color: var(--password-text);
  font: inherit;
}

.password-generator-main input[type="number"],
.password-generator-main input[type="text"] {
  width: 100%;
  min-height: var(--password-control-height);
  padding: 7px 10px;
  background: var(--password-surface);
  border: 1px solid var(--password-border);
  border-radius: var(--password-control-radius);
}

.password-generator-main input[type="range"] {
  width: 100%;
  accent-color: var(--password-accent);
}

.password-generator-main input[type="checkbox"] {
  width: 17px;
  height: 17px;
  margin: 0;
  accent-color: var(--password-accent);
}

.password-generator-main button {
  min-height: var(--password-control-height);
  padding: 7px 14px;
  background: var(--password-surface-2);
  border: 1px solid var(--password-border);
  border-radius: var(--password-control-radius);
  font-weight: 700;
  cursor: pointer;
}

.password-generator-main button.primary {
  color: #fff;
  background: var(--password-accent);
  border-color: var(--password-accent);
}

.password-generator-main button.primary:hover,
.password-generator-main button.primary:focus-visible {
  background: var(--password-accent-hover);
}

.password-generator-main button.danger {
  color: var(--password-danger);
}

.password-generator-main button:disabled {
  cursor: not-allowed;
  opacity: .5;
}

.password-generator-main .password-option-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.password-generator-main .password-option {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 10px;
  background: var(--password-surface-2);
  border: 1px solid var(--password-border);
  border-radius: var(--password-control-radius);
  font-weight: 650;
}

.password-generator-main .password-option small {
  margin-left: auto;
  color: var(--password-muted);
  font-family: "Cascadia Code", Consolas, monospace;
}

.password-generator-main .password-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}

.password-generator-main .password-actions .primary {
  flex: 1 1 220px;
}

/* 強度サマリー */
.password-generator-main .password-summary-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 15px;
  background: var(--password-surface-2);
  border: 1px solid var(--password-border);
  border-radius: 10px;
}

.password-generator-main .password-summary-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.password-generator-main .password-summary-row span {
  color: var(--password-muted);
}

.password-generator-main .password-summary-row strong {
  text-align: right;
}

.password-generator-main progress {
  width: 100%;
  height: 14px;
  border: 0;
  accent-color: var(--password-success);
}

.password-generator-main .password-strength-note {
  margin: 0;
  color: var(--password-muted);
  font-size: .83rem;
  line-height: 1.55;
}

/* 生成結果 */
.password-generator-main .password-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 12px;
}

.password-generator-main .password-result-header h2 {
  margin: 0;
}

.password-generator-main .password-list {
  display: grid;
  gap: 9px;
}

.password-generator-main .password-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px;
  align-items: center;
  padding: 9px;
  background: var(--password-surface-2);
  border: 1px solid var(--password-border);
  border-radius: 9px;
}

.password-generator-main .password-value {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--password-text);
  font: 14px/1.6 "Cascadia Code", Consolas, monospace;
  user-select: all;
}

.password-generator-main .password-copy-button {
  min-height: 34px;
  padding: 5px 10px;
  font-size: .85rem;
}

.password-generator-main .password-empty-result {
  padding: 28px 10px;
  color: var(--password-muted);
  text-align: center;
}

.password-generator-main .password-message {
  min-height: 24px;
  margin: 11px 0 0;
  color: var(--password-muted);
  font-size: .9rem;
  line-height: 1.55;
}

.password-generator-main .password-message.success {
  color: var(--password-success);
}

.password-generator-main .password-message.error {
  color: var(--password-danger);
}

.password-generator-main .password-info-list {
  margin: 0;
  padding-left: 22px;
  color: var(--password-muted);
  line-height: 1.75;
}

.password-generator-main [hidden] {
  display: none !important;
}

/* レスポンシブ表示 */
@media (max-width: 760px) {
  .password-generator-main {
    width: min(100% - 24px, 1080px);
    padding: 24px 0;
  }

  .password-generator-main .password-settings-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .password-generator-main .password-panel {
    padding: 14px;
  }

  .password-generator-main .password-field-row,
  .password-generator-main .password-option-grid {
    grid-template-columns: 1fr;
  }

  .password-generator-main .password-row {
    grid-template-columns: 1fr;
  }

  .password-generator-main .password-copy-button {
    width: 100%;
  }
}