:root {
  --bg: #eef0f4;
  --surface: #ffffff;
  --surface-muted: #f8f9fb;
  --border: #e2e5eb;
  --text: #1c1f26;
  --text-muted: #5c6570;
  --accent: #1a1a1a;
  --cta-start: #0d9488;
  --cta-start-hover: #14b8a6;
  --cta-start-active: #0f766e;
  --cta-shadow: 0 1px 2px rgba(28, 31, 38, 0.06),
    0 8px 28px -6px rgba(13, 148, 136, 0.42);
  --cta-shadow-hover: 0 2px 6px rgba(28, 31, 38, 0.08),
    0 14px 36px -8px rgba(13, 148, 136, 0.48);
  --radius-lg: 16px;
  --radius-md: 12px;
  --shadow: 0 12px 32px rgba(28, 31, 38, 0.08);
  --gap: clamp(16px, 3vw, 28px);
  --column-setup-max: min(560px, 100%);
  --quiz-card-max: min(640px, 100%);
  --app-max-width: 1320px;
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--text);
  background: var(--bg);
}

.app {
  max-width: var(--app-max-width);
  margin: 0 auto;
  padding-top: max(clamp(16px, 4vw, 36px), env(safe-area-inset-top, 0px));
  padding-right: max(clamp(16px, 4vw, 36px), env(safe-area-inset-right, 0px));
  padding-bottom: max(48px, env(safe-area-inset-bottom, 0px));
  padding-left: max(clamp(16px, 4vw, 36px), env(safe-area-inset-left, 0px));
}

.app-header {
  margin-bottom: var(--gap);
  text-align: center;
}

.app-title {
  margin: 0 0 6px;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 650;
  letter-spacing: -0.02em;
}

.app-tagline {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-muted);
}

.app-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
  align-items: start;
}

@media (min-width: 840px) {
  .app-layout {
    grid-template-columns: minmax(280px, var(--column-setup-max)) minmax(0, 1fr);
    gap: clamp(24px, 4vw, 48px);
  }

  .column-setup {
    position: sticky;
    top: clamp(16px, 4vw, 28px);
  }
}

.column-quiz {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  width: 100%;
  max-width: var(--quiz-card-max);
  margin-inline: auto;
}

.column-setup {
  width: 100%;
  max-width: var(--column-setup-max);
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}

.panel-title {
  margin: 0 0 12px;
  font-size: 0.82rem;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

fieldset.panel {
  padding-top: 12px;
}

.setting {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.95rem;
  color: var(--text);
}

.scores-io__replace {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
}

.csv-picker {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.csv-picker__head {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 2px;
  border-bottom: 1px solid var(--border);
}

.csv-picker__head-text {
  min-width: 0;
}

.csv-picker__title.panel-title {
  margin: 0 0 6px;
}

.csv-picker__hint {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--text-muted);
}

.csv-picker__hint-strong {
  color: var(--cta-start);
  font-weight: 650;
}

.csv-picker__cta {
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.btn-retest-wrong {
  margin: 0;
  padding: 10px 14px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, #c62828 55%, var(--border));
  background: color-mix(in srgb, #fff 85%, #ffebee);
  color: #b71c1c;
  font: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-retest-wrong:hover {
  background: #ffebee;
  border-color: #ef9a9a;
}

.btn-retest-wrong:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-start-test {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  margin: 0;
  padding: 12px 14px 12px 18px;
  border: none;
  border-radius: 999px;
  background-color: var(--cta-start);
  color: #fff;
  text-align: left;
  font: inherit;
  box-shadow: var(--cta-shadow);
  transition:
    background-color 0.18s ease,
    box-shadow 0.22s ease,
    transform 0.18s ease,
    opacity 0.18s ease;
}

.btn-start-test:disabled {
  background-color: #9aa3ad;
  box-shadow: none;
  cursor: not-allowed;
  opacity: 0.75;
}

.btn-start-test__main {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  min-width: 0;
}

.btn-start-test__label {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.btn-start-test__sub {
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1.35;
  color: rgba(255, 255, 255, 0.82);
}

.btn-start-test__icon {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.14);
}

.btn-start-test__arrow {
  width: 0.42rem;
  height: 0.42rem;
  margin-left: -1px;
  border-right: 2px solid rgba(255, 255, 255, 0.95);
  border-top: 2px solid rgba(255, 255, 255, 0.95);
  transform: rotate(45deg);
}

.btn-start-test:not(:disabled):hover {
  background-color: var(--cta-start-hover);
  box-shadow: var(--cta-shadow-hover);
}

.btn-start-test:not(:disabled):active {
  background-color: var(--cta-start-active);
  transform: scale(0.985);
  box-shadow: var(--cta-shadow);
}

.csv-file-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
}

.csv-file-toolbar__group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.csv-file-toolbar__group--tree {
  margin-left: auto;
}

.btn-link {
  margin: 0;
  padding: 6px 12px;
  font-size: 13px;
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
}

.btn-link:hover {
  background: color-mix(in srgb, var(--accent) 10%, var(--surface-muted));
}

.csv-file-list {
  max-height: min(900px, 80vh);
  overflow: auto;
  text-align: left;
  margin: 0;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-muted);
}

.csv-tree {
  --csv-tree-indent: 12px;
}

.csv-tree-node {
  margin: 4px 0;
  border-radius: 8px;
}

.csv-tree-node--part {
  margin-left: var(--csv-tree-indent);
  padding-left: 8px;
  border-left: 2px solid var(--border);
}

.csv-tree-node--group {
  margin-left: var(--csv-tree-indent);
  padding-left: 8px;
  border-left: 2px solid color-mix(in srgb, var(--border) 65%, transparent);
}

.csv-tree-summary {
  cursor: pointer;
  list-style-position: outside;
  font-weight: 650;
  font-size: 0.92rem;
  color: var(--text);
  padding: 6px 4px;
  border-radius: 6px;
}

.csv-tree-summary:hover {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.csv-tree-summary__label {
  flex: 1;
  min-width: 0;
}

.csv-tree-node .csv-file-row {
  margin-left: calc(var(--csv-tree-indent) + 4px);
}

.csv-tree-empty {
  margin: 6px 0 8px calc(var(--csv-tree-indent) + 4px);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.csv-file-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 6px 0;
}

.csv-file-row__pick {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
  cursor: pointer;
}

.csv-file-row__name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.csv-file-row__meta {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  max-width: 55%;
  overflow: hidden;
}

.csv-score-chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}

.csv-score-chip[data-score-tier="none"] {
  background: color-mix(in srgb, var(--surface-muted) 85%, var(--border));
  color: var(--text-muted);
  border-color: var(--border);
  font-weight: 500;
}

.csv-score-chip[data-score-tier="weak"] {
  background: #ffebee; color: #b71c1c; border-color: #ef9a9a;
}

.csv-score-chip[data-score-tier="developing"] {
  background: #fff3e0; color: #e65100; border-color: #ffcc80;
}

.csv-score-chip[data-score-tier="solid"] {
  background: #fff8e1; color: #f57f17; border-color: #ffe082;
}

.csv-score-chip[data-score-tier="strong"] {
  background: #e8f5e9; color: #2e7d32; border-color: #a5d6a7;
}

.csv-score-chip[data-score-tier="excellent"] {
  background: #c8e6c9; color: #1b5e20; border-color: #81c784;
}

.csv-score-chip[data-score-tier="perfect"] {
  background: linear-gradient(135deg, #fff9c4 0%, #ffecb3 100%);
  color: #f57f00;
  border-color: #ffb74d;
}

.csv-wrong-chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid #ef9a9a;
  background: #ffebee;
  color: #b71c1c;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s ease, transform 0.1s ease;
}

.csv-wrong-chip:hover {
  background: #ffcdd2;
  transform: translateY(-1px);
}

.csv-wrong-chip:focus-visible {
  outline: 2px solid #c62828;
  outline-offset: 2px;
}

.csv-wrong-chip[hidden],
.btn-retest-wrong[hidden] {
  display: none;
}

.csv-file-row input {
  margin: 0;
  width: auto;
  flex-shrink: 0;
  accent-color: var(--cta-start);
}

.csv-preview-btn {
  flex-shrink: 0;
  padding: 4px 10px;
  font-size: 12px;
}

.csv-preview-dialog {
  margin: auto;
  padding: 0;
  max-width: min(720px, 92vw);
  max-height: min(85vh, 760px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}

.csv-preview-dialog::backdrop {
  background: rgba(28, 31, 38, 0.45);
}

.csv-preview-dialog__inner {
  display: flex;
  flex-direction: column;
  max-height: min(85vh, 760px);
}

.csv-preview-dialog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.csv-preview-dialog__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.csv-preview-dialog__close {
  margin: 0;
  padding: 4px 10px;
  line-height: 1;
  font-size: 1.25rem;
  border: none;
  border-radius: 8px;
  background: var(--surface-muted);
  color: var(--text);
  cursor: pointer;
}

.csv-preview-dialog__meta {
  margin: 0;
  padding: 8px 16px 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.csv-preview-dialog__body {
  padding: 12px 16px 16px;
  overflow: auto;
  flex: 1;
  min-height: 0;
}

.csv-preview-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.csv-preview-table th,
.csv-preview-table td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

.csv-preview-table th {
  background: var(--surface-muted);
  font-weight: 600;
}

.csv-preview-error {
  margin: 0;
  color: var(--text-muted);
}

/* Quiz column ---------------------------------------------------------- */
.test-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 10px;
}

.round-line {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.scoreboard {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.85rem;
  color: var(--text-muted);
  box-shadow: var(--shadow);
}

.scoreboard__label {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72rem;
  font-weight: 600;
}

.scoreboard__value {
  color: var(--text);
  font-weight: 700;
  font-size: 0.95rem;
}

.card {
  background: var(--surface);
  padding: clamp(22px, 4vw, 34px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  text-align: left;
  width: 100%;
}

.test-title {
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.question-stage {
  min-height: 180px;
}

.question-empty {
  margin: 0;
  color: var(--text-muted);
  text-align: center;
  font-size: 0.95rem;
}

.question-prompt {
  margin: 0 0 20px;
  font-size: clamp(18px, 2.3vw, 22px);
  line-height: 1.75;
  color: var(--text);
}

.q-highlight {
  padding: 0 3px;
  font-weight: 700;
  border-bottom: 2px solid #f59e0b;
  background: rgba(245, 158, 11, 0.12);
  border-radius: 3px;
}

.q-highlight--muted {
  background: none;
  border-bottom: 2px dashed color-mix(in srgb, var(--text-muted) 55%, transparent);
  font-weight: 600;
}

.q-blank {
  display: inline-block;
  min-width: 3.5em;
  margin: 0 2px;
  padding: 0 4px;
  border-bottom: 2px solid var(--text);
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-align: center;
}

.q-ab {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 2px 8px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--cta-start) 8%, transparent);
}

.q-ab__opt strong {
  display: inline-block;
  margin-right: 2px;
  padding: 0 4px;
  border-radius: 4px;
  background: rgba(13, 148, 136, 0.14);
  color: #0f766e;
  font-weight: 700;
}

.choices {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.choice {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  font: inherit;
  font-size: 1.02rem;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.12s ease;
}

.choice:hover {
  background: color-mix(in srgb, var(--accent) 5%, var(--surface-muted));
  border-color: color-mix(in srgb, var(--accent) 25%, var(--border));
}

.choice:disabled {
  cursor: default;
  opacity: 0.72;
}

.choice__num {
  flex-shrink: 0;
  width: 1.75em;
  height: 1.75em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.choice.correct,
.ab-btn.correct,
.bank__chip.correct {
  background: #2e7d32 !important;
  border-color: #2e7d32 !important;
  color: #fff !important;
}

.choice.correct .choice__num {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.choice.wrong,
.ab-btn.wrong,
.bank__chip.wrong {
  background: #c62828 !important;
  border-color: #c62828 !important;
  color: #fff !important;
}

.choice.wrong .choice__num {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.ab-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.ab-btn {
  flex: 1 1 auto;
  min-width: 120px;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface-muted);
  font: inherit;
  font-size: 1.02rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-content: center;
}

.ab-btn__key {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.8em;
  height: 1.8em;
  border-radius: 50%;
  background: rgba(13, 148, 136, 0.14);
  color: #0f766e;
  font-weight: 700;
}

.ab-btn.selected {
  background: color-mix(in srgb, var(--cta-start) 10%, var(--surface));
  border-color: var(--cta-start);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--cta-start) 25%, transparent);
}

.ab-btn.selected .ab-btn__key {
  background: var(--cta-start);
  color: #fff;
}

.bank {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px;
  margin-bottom: 14px;
  border-radius: 10px;
  border: 1px dashed color-mix(in srgb, var(--text-muted) 35%, transparent);
  background: color-mix(in srgb, var(--surface-muted) 75%, #fff);
}

.bank__chip {
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  font: inherit;
  font-size: 1.2rem;
  cursor: pointer;
  transition: transform 0.1s ease;
}

.bank__chip:hover {
  transform: translateY(-1px);
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
}

.bank__chip.selected {
  background: var(--cta-start);
  color: #fff;
  border-color: var(--cta-start);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--cta-start) 30%, transparent);
}

.bank-picked {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.bank-picked__label {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.72rem;
  font-weight: 650;
}

.bank-picked__value {
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
}

.input-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-top: 8px;
}

.input-row input {
  flex: 1 1 180px;
  min-width: 0;
  max-width: 100%;
  padding: 12px 14px;
  margin-top: 0;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-muted);
}

.input-row input:disabled {
  opacity: 0.75;
}

.input-row button {
  margin: 0;
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid var(--cta-start);
  background: var(--cta-start);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.input-row button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.input-row button:not(:disabled):hover {
  background: var(--cta-start-hover);
  border-color: var(--cta-start-hover);
}

.question-hint {
  margin: 10px 0 0;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.answer {
  margin-top: 18px;
  min-height: 48px;
}

/* Wrong-answer hint */
.answer-hint {
  text-align: left;
  border-radius: var(--radius-md);
  border: 1px solid rgba(198, 40, 40, 0.35);
  background: linear-gradient(165deg, #fff8f8 0%, #fff 48%);
  box-shadow: 0 4px 14px rgba(198, 40, 40, 0.08);
  overflow: hidden;
}

.answer-hint__banner {
  padding: 8px 14px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #b71c1c;
  background: rgba(198, 40, 40, 0.1);
  border-bottom: 1px solid rgba(198, 40, 40, 0.18);
}

.answer-hint__primary {
  padding: 14px 16px 12px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.answer-hint__primary-label {
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.answer-hint__reading {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.answer-hint__kanji {
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.04em;
  line-height: 1.25;
}

.answer-hint__examples {
  padding: 0 16px 14px;
  border-top: 1px dashed var(--border);
  margin-top: 0;
}

.answer-hint__examples-label {
  display: block;
  margin-top: 12px;
  margin-bottom: 4px;
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.answer-hint__note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

/* Correct-answer feedback */
.answer-ok {
  text-align: left;
  border-radius: var(--radius-md);
  border: 1px solid rgba(46, 125, 50, 0.38);
  background: linear-gradient(165deg, #f1f8f2 0%, #fff 52%);
  box-shadow: 0 4px 16px rgba(46, 125, 50, 0.1);
  overflow: hidden;
}

.answer-ok__banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(46, 125, 50, 0.12);
  border-bottom: 1px solid rgba(46, 125, 50, 0.22);
}

.answer-ok__check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 1.45rem;
  height: 1.45rem;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(27, 94, 32, 0.25);
}

.answer-ok__check::after {
  content: "";
  width: 0.35rem;
  height: 0.62rem;
  margin-bottom: 0.12rem;
  border: solid #2e7d32;
  border-width: 0 0.14rem 0.14rem 0;
  transform: rotate(45deg);
}

.answer-ok__banner-text {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #1b5e20;
}

.answer-ok__body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.answer-ok__primary-label {
  margin: 0;
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.answer-ok__reading {
  font-size: 1.35rem;
  font-weight: 700;
  color: #1b5e20;
  letter-spacing: 0.03em;
  line-height: 1.3;
}

.answer-ok__kanji {
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.04em;
  line-height: 1.25;
}

.answer-ok__note {
  margin: 12px 0 0;
  padding: 10px 12px;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--text-muted);
  background: rgba(46, 125, 50, 0.06);
  border-radius: 8px;
  border-left: 3px solid rgba(46, 125, 50, 0.45);
}

.status-line {
  margin: 14px 0 0;
  font-size: 0.88rem;
  color: var(--text-muted);
  text-align: center;
  min-height: 1.25em;
}

.finish-big {
  text-align: center;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 40px 0;
  color: var(--text);
}

.summary-panel {
  margin-top: 20px;
  padding: 20px 22px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  text-align: center;
}

.summary-panel__title {
  margin: 0 0 8px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
}

.summary-panel__score {
  margin: 0 0 4px;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  color: var(--cta-start);
}

.summary-panel__pct {
  font-size: 0.65em;
  color: var(--text-muted);
  font-weight: 600;
}

.summary-panel__file {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.summary-panel__actions {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.summary-panel__clean {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: #e8f5e9;
  color: #2e7d32;
  font-size: 0.85rem;
  font-weight: 600;
}

.btn-link--danger {
  border-color: #ef9a9a;
  background: #ffebee;
  color: #b71c1c;
}

.btn-link--danger:hover {
  background: #ffcdd2;
}

button {
  cursor: pointer;
  font: inherit;
}

/* Mobile */
@media (max-width: 839px) {
  body {
    overflow-x: clip;
  }

  button,
  .btn-link,
  .choice,
  .ab-btn,
  .bank__chip {
    touch-action: manipulation;
  }

  .csv-file-toolbar {
    flex-wrap: wrap;
  }

  .csv-file-toolbar__group--tree {
    margin-left: 0;
    width: 100%;
  }

  .csv-file-list {
    max-height: min(320px, 45vh);
  }

  .input-row {
    flex-direction: column;
    align-items: stretch;
  }

  .input-row input,
  .input-row button {
    width: 100%;
    max-width: none;
    min-height: 44px;
  }

  .btn-start-test {
    min-height: 48px;
    width: 100%;
  }

  .csv-picker__head {
    flex-direction: column;
    align-items: stretch;
  }

  .panel {
    padding: 14px;
  }

  .csv-preview-dialog {
    width: 100%;
    max-width: 100%;
    max-height: 100%;
    height: 100%;
    margin: 0;
    border-radius: 0;
  }

  .csv-preview-dialog__inner {
    max-height: 100%;
  }
}