:root {
  color-scheme: light;
  font-family: "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --page-bg: #f5f6f8;
  --card-bg: #ffffff;
  --text: #1f2937;
  --muted: #667085;
  --border: #d8dee8;
  --primary: #2457a7;
  --primary-hover: #1c478a;
  --soft: #eef3fb;
  --success-bg: #eef8f0;
  --success-text: #225c2e;
  --info-bg: #f3f5f8;
  --info-text: #475467;
  --error-bg: #fff0f0;
  --error-text: #9b1c1c;
  --control-chevron: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%231f2937' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

* {
  box-sizing: border-box;
}

html {
  background: var(--page-bg);
}

body {
  margin: 0;
  color: var(--text);
  background: var(--page-bg);
  line-height: 1.7;
}

button,
select {
  font: inherit;
}

.site-header {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
}

.site-header-inner,
.page-shell,
.site-footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header-inner {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 0;
}

.site-kicker,
.section-kicker {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.site-header .site-kicker {
  margin: 0;
  font-size: 0.72rem;
  white-space: nowrap;
}

.site-header h1,
.section-heading h2,
.quiz-toolbar h2 {
  margin: 0;
  line-height: 1.35;
}

.site-header h1 {
  font-size: clamp(1.35rem, 3vw, 1.65rem);
}

.quiz-toolbar h2 {
  font-size: 1.35em;
}

.site-description {
  margin: 0 0 0 auto;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.page-shell {
  padding: 28px 0 48px;
}

.control-card,
.quiz-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(31, 41, 55, 0.05);
}

.control-card {
  padding: 22px;
  margin-bottom: 22px;
}

.section-heading,
.quiz-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.date-controls {
  display: grid;
  grid-template-columns: 140px 140px 180px minmax(220px, 1fr);
  gap: 14px;
  align-items: end;
  margin-top: 18px;
}

.field {
  display: grid;
  gap: 6px;
  font-weight: 700;
}

.field select {
  width: 100%;
  min-height: 46px;
  padding: 8px 38px 8px 12px;
  color: var(--text);
  background: #fff;
  border: 1px solid #b9c2d0;
  border-radius: 9px;
}

.field select:focus-visible,
.calendar-trigger:focus-visible,
.settings-select-trigger:focus-visible,
.settings-select-option:focus-visible,
.button:focus-visible {
  outline: 3px solid rgba(36, 87, 167, 0.2);
  outline-offset: 2px;
}

.button {
  min-height: 46px;
  padding: 9px 16px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.button:not(:disabled):hover {
  transform: translateY(-1px);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

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

.button-primary:not(:disabled):hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

.button-secondary {
  color: var(--primary);
  background: #fff;
  border-color: #aebbd0;
}

.button-secondary:not(:disabled):hover {
  background: var(--soft);
}

.quiz-section {
  padding: 18px;
}

.quiz-toolbar {
  padding-bottom: 12px;
}

.quiz-toolbar > div:first-child {
  flex: 0 0 auto;
  min-width: max-content;
}

.quiz-toolbar h2 {
  white-space: nowrap;
}

.toolbar-actions {
  display: flex;
  flex: 1 1 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
}

.toolbar-actions .button {
  min-height: 38px;
  padding: 6px 10px;
  font-size: 0.9rem;
}

.pattern-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.pattern-selector[hidden],
.pattern-button[hidden] {
  display: none !important;
}

.pattern-button.is-active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

.pattern-button.is-active:not(:disabled):hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

.status-message {
  margin: 20px 0;
  padding: 12px 14px;
  border-radius: 9px;
  color: var(--info-text);
  background: var(--info-bg);
}

.status-message:empty {
  display: none;
}

.status-success {
  color: var(--success-text);
  background: var(--success-bg);
}

.status-error {
  color: var(--error-text);
  background: var(--error-bg);
}

.quiz-container {
  display: grid;
  gap: 14px;
}


.quiz-group + .quiz-group {
  margin-top: 20px;
}

.quiz-group-title {
  margin: 0 0 10px;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.4;
}

.question-card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #fff;
}

.question-heading {
  display: flex;
  align-items: center;
  gap: 10px;
}

.question-number {
  font-size: 1rem;
  font-weight: 800;
}

.difficulty {
  display: none;
  align-items: center;
  min-height: 26px;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  background: #f0f2f5;
}

.difficulty-beginner {
  background: #edf7ee;
}

.difficulty-intermediate {
  background: #fff6df;
}

.difficulty-advanced {
  background: #fcecee;
}

.show-answers .difficulty {
  display: inline-flex;
}

.question-text {
  margin: 14px 0 16px;
  font-size: clamp(1.008rem, 2.25vw, 1.17rem);
  font-weight: 700;
  line-height: 1.75;
}

.choice-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.choice-item {
  display: grid;
  grid-template-columns: 34px 1fr;
  align-items: start;
  gap: 9px;
  padding: 9px 11px;
  border-radius: 8px;
  background: #f8f9fb;
  font-size: 1.02rem;
}

.choice-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid #bcc5d2;
  border-radius: 50%;
  background: #fff;
  font-weight: 800;
  line-height: 1;
}

.show-answers .choice-label-correct {
  background: #d9d9d9;
}

.answer-block {
  display: none;
  margin-top: 18px;
  padding: 15px 16px;
  border-left: 4px solid var(--primary);
  border-radius: 8px;
  background: var(--soft);
}

.show-answers .answer-block {
  display: block;
}

.answer-text,
.explanation {
  margin: 0;
}

.explanation {
  margin-top: 8px;
}

.print-only {
  display: none;
}

.site-footer {
  padding: 0 0 34px;
  color: var(--muted);
  font-size: 0.86rem;
  text-align: center;
}

@media (max-width: 820px) {
  .choice-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .date-controls {
    grid-template-columns: 1fr 1fr;
  }

  .date-controls .button {
    grid-column: 1 / -1;
  }

  .quiz-toolbar,
  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

 .toolbar-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 560px) {
  .choice-list {
    grid-template-columns: 1fr;
  }

  .site-header-inner,
  .page-shell,
  .site-footer {
    width: min(100% - 20px, 1120px);
  }

  .site-header-inner {
    gap: 5px 10px;
    padding: 9px 0;
  }

  .site-description {
    flex-basis: 100%;
    margin-left: 0;
    font-size: 0.8rem;
  }

  .page-shell {
    padding-top: 14px;
  }

  .control-card,
  .quiz-section {
    padding: 16px;
    border-radius: 10px;
  }

  .date-controls {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

 .toolbar-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .toolbar-actions .button {
    width: 100%;
  }

  .question-card {
    padding: 16px;
  }
}

/* 問題選択・設定：デスクトップでは各行をコンパクトに表示 */
.control-card-compact {
  padding: 12px 14px;
  margin-bottom: 16px;
}

.control-card-row {
  display: grid;
  align-items: center;
  gap: 10px;
}

.control-card-row-date {
  grid-template-columns: 54px minmax(0, 1fr) auto auto;
}

.control-card-row-date .date-field {
  display: flex;
  align-items: center;
  gap: 10px;
}

.date-select-group,
.date-range-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.calendar-picker {
  width: 150px;
}

.calendar-picker {
  position: relative;
  flex: 0 0 150px;
}

.calendar-month-native,
.calendar-day-native {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  border: 0 !important;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  pointer-events: none;
}

.calendar-trigger {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 40px;
  padding: 6px 34px 6px 10px;
  color: var(--text);
  background-color: #fff;
  background-image: var(--control-chevron);
  background-repeat: no-repeat;
  background-position: right 11px center;
  background-size: 10px 6px;
  border: 1px solid #b9c2d0;
  border-radius: 9px;
  box-shadow: none;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
}

.calendar-trigger:hover:not(:disabled) {
  border-color: #8fa0b8;
}

.calendar-trigger:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.calendar-day-button:focus-visible {
  outline: 3px solid rgba(36, 87, 167, 0.2);
  outline-offset: 2px;
}

.calendar-trigger-arrow {
  display: none;
}

.settings-select {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
}

.settings-select-native {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  margin: -1px !important;
  padding: 0 !important;
  border: 0 !important;
  overflow: hidden !important;
  clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important;
  white-space: nowrap !important;
  pointer-events: none !important;
}

.settings-select-trigger {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 40px;
  padding: 6px 34px 6px 10px;
  color: var(--text);
  background-color: #fff;
  background-image: var(--control-chevron);
  background-repeat: no-repeat;
  background-position: right 11px center;
  background-size: 10px 6px;
  border: 1px solid #b9c2d0;
  border-radius: 9px;
  box-shadow: none;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: left;
  cursor: pointer;
}

.settings-select-trigger:hover:not(:disabled) {
  border-color: #8fa0b8;
}

.settings-select-trigger:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.settings-select-menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 120;
  width: 100%;
  min-width: max-content;
  padding: 4px;
  background: #fff;
  border: 1px solid #b9c2d0;
  border-radius: 9px;
  box-shadow: 0 10px 30px rgba(31, 41, 55, 0.16);
}

.settings-select-menu[hidden] {
  display: none !important;
}

.settings-select-option {
  display: block;
  width: 100%;
  min-height: 36px;
  padding: 7px 10px;
  color: var(--text);
  background: #fff;
  border: 1px solid transparent;
  border-radius: 6px;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.35;
  text-align: left;
  white-space: nowrap;
  cursor: pointer;
}

.settings-select-option:hover:not(:disabled) {
  background: var(--soft);
  border-color: #c7d2e3;
}

.settings-select-option.is-selected {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
}

.settings-select-option.is-selected:hover:not(:disabled) {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}

.settings-select-option:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.calendar-popup {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 100;
  width: 292px;
  max-width: calc(100vw - 24px);
  padding: 10px;
  background: #fff;
  border: 1px solid #b9c2d0;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(31, 41, 55, 0.16);
}

.date-range-controls .calendar-popup {
  left: auto;
  right: 0;
}

.calendar-popup[hidden] {
  display: none !important;
}

.calendar-popup-heading {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) 36px;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
  font-size: 0.95rem;
  font-weight: 800;
  text-align: center;
}

.calendar-popup-month-label {
  white-space: nowrap;
}

.calendar-nav-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 34px;
  padding: 0;
  color: var(--primary);
  background: #fff;
  border: 1px solid #c7d2e3;
  border-radius: 7px;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.calendar-nav-button:hover {
  background: var(--soft);
}

.calendar-nav-button:focus-visible {
  outline: 3px solid rgba(36, 87, 167, 0.2);
  outline-offset: 2px;
}

.calendar-weekdays,
.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 3px;
}

.calendar-weekdays {
  margin-bottom: 4px;
}

.calendar-weekday {
  padding: 3px 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  text-align: center;
}

.calendar-weekday.is-sunday,
.calendar-day-button.is-sunday {
  color: #b42318;
}

.calendar-weekday.is-saturday,
.calendar-day-button.is-saturday {
  color: var(--primary);
}

.calendar-day-empty {
  min-height: 34px;
}

.calendar-day-button {
  min-width: 0;
  min-height: 34px;
  padding: 3px;
  color: var(--text);
  background: #fff;
  border: 1px solid transparent;
  border-radius: 7px;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.calendar-day-button:hover {
  background: var(--soft);
  border-color: #c7d2e3;
}

.calendar-day-button.is-selected {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary);
  font-weight: 800;
}

.calendar-day-button.is-selected.is-sunday,
.calendar-day-button.is-selected.is-saturday {
  color: #fff;
}

.date-range-controls[hidden] {
  display: none !important;
}

.date-range-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}

.date-range-toggle input {
  width: 17px;
  height: 17px;
  margin: 0;
}

.date-range-separator {
  text-align: center;
  font-weight: 700;
}


.control-card-row-date .date-range-toggle {
  justify-self: end;
}

.control-card-row-date #today-button {
  justify-self: end;
}

.control-card-row-settings {
  grid-template-columns: 54px 170px 160px 160px 160px minmax(180px, 1fr);
  margin-top: 10px;
}

.control-card-row-settings::before {
  content: '';
  display: block;
}

.control-card-row-settings #load-button {
  justify-self: end;
  min-width: 180px;
}

.control-title {
  margin: 0;
  color: var(--primary);
  font-size: 0.95rem;
  line-height: 1.2;
  white-space: nowrap;
}

.control-card-compact .field {
  min-width: 0;
}

.control-card-compact .field-inline {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.9rem;
  white-space: nowrap;
}

.control-card-compact .field-inline span {
  flex: 0 0 auto;
}

.control-card-compact .field select {
  min-width: 0;
  min-height: 40px;
  padding: 6px 34px 6px 10px;
  color: var(--text);
  background-color: #fff;
  background-image: var(--control-chevron);
  background-repeat: no-repeat;
  background-position: right 11px center;
  background-size: 10px 6px;
  border: 1px solid #b9c2d0;
  border-radius: 9px;
  box-shadow: none;
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.4;
  cursor: pointer;
}

.control-card-compact .field select:hover:not(:disabled) {
  border-color: #8fa0b8;
}

.control-card-compact .field select:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.control-card-compact .calendar-trigger {
  min-width: 0;
  min-height: 40px;
  padding: 6px 34px 6px 10px;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.4;
}

.control-card-compact .settings-select-trigger {
  min-width: 0;
  min-height: 40px;
  padding: 6px 34px 6px 10px;
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1.4;
}

.control-card-compact .button {
  min-height: 40px;
  padding: 7px 14px;
  white-space: nowrap;
}

@media (max-width: 920px) {
 .control-card-row-date {
    grid-template-columns: auto 1fr;
  }

  .control-card-row-date .date-field {
    flex-wrap: wrap;
  }

  .calendar-picker {
    width: min(150px, 24vw);
    flex-basis: min(150px, 24vw);
  }

  .control-card-row-date #today-button {
    grid-column: 2;
    justify-self: stretch;
  }

  .control-card-row-settings {
    padding-left: 0;
  }

  .control-card-row-settings #load-button {
    margin-left: 0;
    width: 100%;
  }
}

@media (max-width: 620px) {
  .control-card-row-date {
    grid-template-columns: 1fr;
  }

  .control-card-row-settings {
    display: grid;
    grid-template-columns: 1fr;
    padding-left: 0;
  }

  .control-title {
    grid-column: 1 / -1;
  }

  .control-card-row-date .date-field {
    display: grid;
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .date-select-group {
    display: grid;
    grid-template-columns: 1fr;
  }

  .date-range-controls {
    display: grid;
    grid-template-columns: auto 1fr;
  }

  .calendar-picker {
    width: 100%;
  }

  .calendar-picker {
    flex-basis: auto;
  }

  .date-range-controls .date-range-separator {
    grid-column: 1 / -1;
    line-height: 1;
  }

  .control-card-compact .field-inline {
    display: grid;
    gap: 4px;
  }

  .control-card-row-date #today-button,
  .control-card-row-settings #load-button {
    grid-column: 1 / -1;
    justify-self: stretch;
    width: 100%;
    margin-left: 0;
  }
}


/* サイト共通ナビゲーション・お問い合わせページ */
.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-left: 4px;
  font-size: 0.9rem;
}

.site-nav a,
.site-title-link {
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-title-link:hover {
  text-decoration: underline;
}

.content-card {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card-bg);
  box-shadow: 0 8px 24px rgba(31, 41, 55, 0.05);
}

.content-card h2 {
  margin: 0 0 14px;
  line-height: 1.35;
}

.contact-note {
  color: var(--muted);
  font-size: 0.92rem;
}

.contact-actions {
  margin: 24px 0 0;
}

.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

@media (max-width: 560px) {
  .site-nav {
    flex-basis: 100%;
    margin-left: 0;
  }

  .content-card {
    padding: 20px 16px;
  }

  .contact-actions .button-link {
    width: 100%;
  }
}

/* 連想問題：Web表示ではヒントのみ表示し、記入欄は印刷時だけ使用する */
.association-point {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.6;
}

.association-response-space {
  display: none;
}

.association-answer-block .explanation {
  margin-top: 0;
}

/* =========================================================
   画面全体のスタイル調整
   既存の機能・印刷レイアウトは変えず、画面表示の統一感だけを整える
   ========================================================= */
:root {
  --ui-control-height: 42px;
  --ui-control-radius: 10px;
  --ui-control-border: #b7c2d2;
  --ui-control-border-hover: #8295b1;
  --ui-focus-ring: rgba(36, 87, 167, 0.18);
  --ui-popup-shadow: 0 12px 28px rgba(31, 41, 55, 0.14);
  --ui-card-shadow: 0 6px 18px rgba(31, 41, 55, 0.045);
}

/* ページ全体 */
.site-header-inner,
.page-shell,
.site-footer {
  width: min(1160px, calc(100% - 32px));
}

.site-header-inner {
  min-height: 54px;
  padding: 10px 0;
}

.page-shell {
  padding: 20px 0 40px;
}

.control-card,
.quiz-section {
  border-color: #d5dce7;
  border-radius: 12px;
  box-shadow: var(--ui-card-shadow);
}

/* 設定エリア */
.control-card-compact {
  padding: 14px 16px;
  margin-bottom: 16px;
}

/* 横幅がやや狭い環境でも設定欄が枠外にはみ出さないよう、
   実際の最終レイアウトは折り返し可能な flex で上書きする */
.control-card-row-settings {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  padding-left: 66px;
}

.control-card-row-settings::before {
  display: none;
}

.control-card-row-settings .field-inline {
  flex: 0 1 auto;
}

.control-card-row-settings .field-inline > span {
  white-space: nowrap;
}

.control-card-row-settings .settings-select {
  min-width: 116px;
}

.control-card-row-settings #load-button {
  margin-left: auto;
  min-width: 172px;
  max-width: 100%;
}

.control-card-row {
  gap: 12px;
}

.control-card-row-settings {
  margin-top: 9px;
}

.control-title {
  font-size: 1rem;
  font-weight: 800;
}

.control-card-compact .field-inline {
  gap: 8px;
  font-size: 0.92rem;
  font-weight: 700;
}

.control-card-compact .field-inline > span,
.date-range-toggle {
  color: #172033;
}

.control-card-row-settings .field-inline {
  flex: 0 1 auto;
}

.control-card-row-settings .field-inline > span {
  white-space: nowrap;
}

.control-card-row-settings .settings-select {
  min-width: 116px;
}


/* 日付・設定ドロップダウンを同じUI規格に統一 */
.calendar-trigger,
.settings-select-trigger,
.control-card-compact .field select {
  min-height: var(--ui-control-height);
  padding: 7px 34px 7px 11px;
  color: var(--text);
  background-color: #fff;
  border: 1px solid var(--ui-control-border);
  border-radius: var(--ui-control-radius);
  box-shadow: none;
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.35;
  transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.calendar-trigger:hover:not(:disabled),
.settings-select-trigger:hover:not(:disabled),
.control-card-compact .field select:hover:not(:disabled) {
  background-color: #fbfcfe;
  border-color: var(--ui-control-border-hover);
}

.calendar-trigger:focus-visible,
.settings-select-trigger:focus-visible,
.control-card-compact .field select:focus-visible,
.settings-select-option:focus-visible,
.calendar-day-button:focus-visible,
.calendar-nav-button:focus-visible,
.button:focus-visible {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--ui-focus-ring);
}

.calendar-trigger:disabled,
.settings-select-trigger:disabled,
.control-card-compact .field select:disabled {
  background-color: #f5f6f8;
  color: #8b95a5;
  cursor: not-allowed;
  opacity: 1;
}

.calendar-picker {
  width: 154px;
  flex-basis: 154px;
}

/* 設定ドロップダウン */
.settings-select-menu {
  top: calc(100% + 5px);
  width: 100%;
  min-width: 100%;
  padding: 5px;
  border-color: #c1cad8;
  border-radius: 10px;
  box-shadow: var(--ui-popup-shadow);
}

.settings-select-option {
  min-height: 38px;
  padding: 8px 10px;
  border-radius: 7px;
  font-size: 0.92rem;
}

.settings-select-option:hover:not(:disabled) {
  background: #eef3fb;
  border-color: #d4deec;
}

/* カレンダー */
.calendar-popup {
  top: calc(100% + 5px);
  width: 300px;
  padding: 11px;
  border-color: #c1cad8;
  border-radius: 10px;
  box-shadow: var(--ui-popup-shadow);
}

.calendar-popup-heading {
  margin-bottom: 9px;
}

.calendar-nav-button {
  width: 36px;
  height: 36px;
  border-color: #c9d2df;
  border-radius: 8px;
}

.calendar-day-button {
  min-height: 34px;
  border-radius: 7px;
  font-weight: 700;
}

.date-range-toggle {
  min-height: var(--ui-control-height);
  padding: 0 2px;
}

.date-range-toggle input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

/* 設定内のボタン */
.control-card-compact .button {
  min-height: var(--ui-control-height);
  padding: 7px 15px;
  border-radius: var(--ui-control-radius);
}

.control-card-row-settings #load-button {
  min-width: 172px;
}

/* 問題上部 */
.quiz-section {
  padding: 16px;
}

.quiz-toolbar {
  gap: 14px;
  padding-bottom: 10px;
}

.quiz-toolbar h2 {
  font-size: 1.25rem;
  font-weight: 800;
}

.toolbar-actions {
  gap: 7px;
}

.toolbar-actions .button {
  min-height: 38px;
  padding: 6px 11px;
  border-radius: 9px;
  font-size: 0.88rem;
}

.pattern-selector {
  gap: 6px;
}

/* 問題一覧 */
.quiz-container {
  gap: 12px;
}

.quiz-group + .quiz-group {
  margin-top: 18px;
}

.quiz-group-title {
  margin-bottom: 9px;
  font-size: 1.08rem;
}

.question-card {
  padding: 20px;
  border-color: #d8dfe9;
  border-radius: 10px;
}

.question-heading {
  gap: 9px;
}

.question-number {
  color: #172033;
}

.question-text {
  margin: 12px 0 14px;
  line-height: 1.68;
}

.choice-list {
  gap: 8px;
}

.choice-item {
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid #edf0f4;
  border-radius: 8px;
  background: #f8f9fb;
  line-height: 1.55;
}

.choice-label {
  border-color: #b8c3d1;
}

.answer-block {
  margin-top: 16px;
  padding: 14px 15px;
  border-left-width: 3px;
  border-radius: 7px;
}

.status-message {
  margin: 14px 0;
  border-radius: 8px;
}

/* レスポンシブ時も余白・操作感を統一 */
@media (max-width: 920px) {
  .calendar-picker {
    width: min(154px, 28vw);
    flex-basis: min(154px, 28vw);
  }

  .control-card-row {
    gap: 10px;
  }
}

@media (max-width: 620px) {
  .site-header-inner,
  .page-shell,
  .site-footer {
    width: min(100% - 20px, 1160px);
  }

  .control-card-compact {
    padding: 12px;
  }

  .calendar-picker {
    width: 100%;
    flex-basis: auto;
  }

  .calendar-popup {
    width: min(300px, calc(100vw - 44px));
  }

  .quiz-section {
    padding: 14px;
  }

  .question-card {
    padding: 16px;
  }
}

/* =========================================================
   設定欄：中間幅で折り返したときも列位置を整える
   ========================================================= */
@media (min-width: 621px) and (max-width: 1100px) {
  .control-card-row-date {
    display: grid;
    grid-template-columns: 54px minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 10px 14px;
  }

  .control-card-row-date .date-field {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    min-width: 0;
  }

  .control-card-row-date .date-range-toggle,
  .control-card-row-date #today-button {
    grid-column: auto;
    justify-self: end;
    width: auto;
  }

  .control-card-row-settings {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: center;
    gap: 12px 16px;
    padding-left: 66px;
  }

  .control-card-row-settings::before {
    display: none;
  }

  .control-card-row-settings .field-inline {
    display: grid;
    grid-template-columns: max-content minmax(116px, 1fr);
    align-items: center;
    gap: 8px;
    min-width: 0;
  }

  .control-card-row-settings .settings-select {
    width: 100%;
    min-width: 0;
  }

  .control-card-row-settings #load-button {
    grid-column: 2;
    justify-self: end;
    width: 100%;
    max-width: 280px;
    min-width: 172px;
    margin-left: 0;
  }
}

/* =========================================================
   設定欄：狭い画面ではすべて同じ基準線の1列レイアウトにする
   ========================================================= */
@media (max-width: 760px) {
  .control-card-row-date,
  .control-card-row-settings {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
    padding-left: 0;
  }

  .control-card-row-date {
    align-items: stretch;
  }

  .control-title {
    grid-column: 1;
    justify-self: start;
  }

  .control-card-row-date .date-field,
  .control-card-row-settings .field-inline {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    width: 100%;
    min-width: 0;
  }

  .date-select-group,
  .date-range-controls,
  .calendar-picker,
  .settings-select {
    width: 100%;
    min-width: 0;
    max-width: none;
  }

  .calendar-picker {
    flex-basis: auto;
  }

  .calendar-trigger,
  .settings-select-trigger {
    width: 100%;
  }

  .control-card-row-date .date-range-toggle {
    grid-column: 1;
    justify-self: start;
    width: auto;
    min-height: auto;
    padding: 2px 0;
  }

  .control-card-row-date #today-button,
  .control-card-row-settings #load-button {
    grid-column: 1;
    justify-self: stretch;
    width: 100%;
    max-width: none;
    min-width: 0;
    margin-left: 0;
  }

  .control-card-row-settings .field-inline > span {
    justify-self: start;
  }

  .date-range-controls {
    grid-template-columns: minmax(0, 1fr);
  }

  .date-range-controls .date-range-separator {
    grid-column: 1;
    justify-self: center;
  }
}


/* =========================================================
   フッター・利用規約ページ
   ========================================================= */
.site-footer {
  padding: 8px 0 30px;
  color: var(--muted);
  font-size: 0.86rem;
  text-align: center;
}

.site-footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.site-footer-links a {
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
}

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

.site-footer-links a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}

.site-footer-divider {
  color: #b6bfcc;
}

.site-footer-note {
  margin: 8px 0 0;
}

.legal-page {
  max-width: 920px;
}

.legal-card {
  max-width: none;
  padding: 30px 34px;
}

.legal-header {
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.legal-header h2 {
  margin: 0;
  font-size: 1.65rem;
}

.legal-updated {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.legal-card > p,
.legal-section p,
.legal-section li {
  line-height: 1.9;
}

.legal-section {
  margin-top: 28px;
}

.legal-section h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  line-height: 1.5;
}

.legal-section p {
  margin: 0;
}

.legal-section ol {
  margin: 8px 0 0;
  padding-left: 1.7em;
}

.legal-section li + li {
  margin-top: 5px;
}

.legal-card a {
  color: var(--primary);
}

@media (max-width: 620px) {
  .legal-card {
    padding: 22px 16px;
  }

  .legal-header h2 {
    font-size: 1.4rem;
  }

  .legal-section {
    margin-top: 24px;
  }

  .site-footer-divider {
    display: none;
  }

  .site-footer-links {
    gap: 8px 14px;
  }
}

/* =========================================================
   ヘルプページ
   ========================================================= */
.help-page {
  max-width: 980px;
}

.help-card {
  max-width: none;
  padding: 30px 34px 34px;
}

.help-header {
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.help-header h2 {
  margin: 0;
  font-size: 1.65rem;
}

.help-header p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

/* 目次：大分類を先に見せ、その中に項目を縦に並べる */
.help-index {
  padding: 20px;
  background: #f6f8fc;
  border: 1px solid #d5deeb;
  border-radius: 14px;
}

.help-index-heading {
  margin-bottom: 14px;
}

.help-index-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 800;
}

.help-index-description {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.help-index-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.help-index-group {
  overflow: hidden;
  background: #fff;
  border: 1px solid #dbe2ec;
  border-radius: 10px;
}

.help-index-group h3 {
  margin: 0;
  padding: 10px 12px;
  color: #172033;
  background: #edf3fb;
  border-bottom: 1px solid #dbe2ec;
  font-size: 0.95rem;
  font-weight: 800;
}

.help-index-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 9px 12px;
  color: var(--primary);
  font-weight: 700;
  line-height: 1.45;
  text-decoration: none;
  border-top: 1px solid #edf0f5;
}

.help-index-group .help-index-link:first-of-type {
  border-top: 0;
}

.help-index-link:hover {
  background: #f7faff;
  text-decoration: none;
}

.help-index-number,
.help-section-number {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: var(--primary);
  font-weight: 800;
}

.help-index-number {
  width: 30px;
  height: 26px;
  border-radius: 6px;
  font-size: 0.76rem;
}

.help-card a {
  color: var(--primary);
}

.help-card > a:hover,
.help-section a:hover {
  text-decoration: underline;
}

/* 本文：大分類ごとに独立したカードへ分割 */
.help-groups {
  display: grid;
  gap: 24px;
  margin-top: 26px;
}

.help-group {
  overflow: hidden;
  background: #fff;
  border: 1px solid #d6deea;
  border-radius: 14px;
  box-shadow: 0 4px 14px rgba(31, 41, 55, 0.04);
}

.help-group-header {
  padding: 18px 20px;
  background: #f5f8fd;
  border-bottom: 1px solid #dce3ed;
}

.help-group-kicker {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 800;
}

.help-group-header h3 {
  margin: 0;
  color: #172033;
  font-size: 1.2rem;
  line-height: 1.45;
}

.help-group-header > p:last-child {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.help-group-body {
  padding: 0 20px;
}

.help-section {
  scroll-margin-top: 16px;
  margin-top: 0;
  padding: 20px 0 22px;
}

.help-section + .help-section {
  border-top: 1px solid #e2e7ef;
}

.help-section h4 {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  color: #172033;
  font-size: 1.08rem;
  line-height: 1.5;
}

.help-section-number {
  width: 34px;
  height: 28px;
  border-radius: 7px;
  font-size: 0.78rem;
}

.help-subsection {
  margin-top: 12px;
  padding: 14px 16px;
  background: #fafbfd;
  border: 1px solid #e2e7ef;
  border-radius: 9px;
}

.help-subsection-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.help-subsection-grid .help-subsection {
  margin-top: 0;
}

.help-subsection h5 {
  margin: 0 0 6px;
  color: #172033;
  font-size: 0.96rem;
  line-height: 1.5;
}

.help-section p,
.help-section li,
.help-section dd {
  line-height: 1.85;
}

.help-section p {
  margin: 8px 0 0;
}

.help-steps {
  display: grid;
  gap: 8px;
  margin: 8px 0 0;
  padding-left: 1.7em;
}

.help-steps li + li {
  margin-top: 0;
}

.help-note {
  margin-top: 14px !important;
  padding: 12px 14px;
  background: #eef4fd;
  border-left: 4px solid var(--primary);
  border-radius: 6px;
}

.help-trouble-list {
  display: grid;
  gap: 10px;
  margin: 8px 0 0;
}

.help-trouble-list > div {
  padding: 13px 14px;
  background: #fafbfd;
  border: 1px solid #e2e7ef;
  border-radius: 8px;
}

.help-trouble-list > div:first-child {
  padding-top: 13px;
}

.help-trouble-list dt {
  color: #172033;
  font-weight: 800;
}

.help-trouble-list dd {
  margin: 5px 0 0;
}

@media (max-width: 700px) {
  .help-card {
    padding: 22px 16px 26px;
  }

  .help-header h2 {
    font-size: 1.4rem;
  }

  .help-index {
    padding: 14px;
  }

  .help-index-groups,
  .help-subsection-grid {
    grid-template-columns: 1fr;
  }

  .help-groups {
    gap: 18px;
    margin-top: 20px;
  }

  .help-group-header {
    padding: 16px;
  }

  .help-group-body {
    padding: 0 16px;
  }

  .help-section {
    padding: 18px 0 20px;
  }
}



/* 日本語エラーページ */
.error-page {
  min-height: 56vh;
  display: flex;
  align-items: center;
}

.error-card {
  width: 100%;
  max-width: 720px;
  text-align: center;
}

.error-code {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: clamp(2.6rem, 8vw, 4.5rem);
  font-weight: 900;
  line-height: 1;
}

.error-card h2 {
  margin-bottom: 12px;
}

.error-card > p:not(.error-code) {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.error-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
}

@media (max-width: 560px) {
  .error-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .error-actions .button {
    width: 100%;
  }
}