:root {
  color-scheme: light;
  --bg: #f7f8f6;
  --surface: #ffffff;
  --surface-soft: #f2f5f2;
  --ink: #1f2933;
  --muted: #5f6f73;
  --line: #d9e0de;
  --line-strong: #b8c5c2;
  --brand: #0f766e;
  --brand-dark: #115e59;
  --accent: #7c4a14;
  --danger: #b42318;
  --warning: #9a6700;
  --success-bg: #e7f6ef;
  --success-line: #a7dcc3;
  --success-ink: #14532d;
  --partial-bg: #fff6d7;
  --partial-line: #ead27b;
  --partial-ink: #714b00;
  --none-bg: #fdeceb;
  --none-line: #efb4b0;
  --none-ink: #8f1d16;
  --shadow: 0 18px 42px rgba(31, 41, 51, 0.08);
  --radius: 8px;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  letter-spacing: 0;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.7;
}

button,
input,
textarea {
  font: inherit;
}

button,
.button-link {
  min-height: 46px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 10px 16px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}

button:hover:not(:disabled),
.button-link:hover {
  border-color: var(--brand);
  background: #f4fbf8;
  transform: translateY(-1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 3px solid rgba(15, 118, 110, 0.24);
  outline-offset: 2px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 13px 14px;
  background: var(--surface);
  color: var(--ink);
}

textarea {
  min-height: 132px;
  resize: vertical;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.35;
}

p {
  margin: 0;
}

.noscript {
  margin: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  background: var(--surface);
}

.app-shell {
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 28px 18px 34px;
}

.auth-shell {
  width: min(760px, 100%);
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.app-header,
.screen-stack,
.case-flow,
.result-flow {
  display: grid;
  gap: 18px;
}

.app-header {
  margin-bottom: 18px;
}

.brand-row {
  display: flex;
  gap: 14px;
  align-items: center;
}

.mark {
  flex: 0 0 auto;
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border: 1px solid #b7d9d2;
  border-radius: var(--radius);
  background: #e9f7f4;
  color: var(--brand-dark);
}

.mark svg {
  width: 30px;
  height: 30px;
}

.eyebrow {
  color: var(--brand-dark);
  font-size: 0.9rem;
  font-weight: 700;
}

.app-title {
  font-size: 2rem;
}

.subtitle {
  color: var(--muted);
  font-size: 1.05rem;
}

.version {
  display: inline-flex;
  width: fit-content;
  min-height: 30px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 2px 10px;
  background: var(--surface-soft);
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.panel,
.case-card,
.notice-bar {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel,
.case-card {
  padding: 22px;
}

.panel.narrow {
  width: 100%;
}

.panel-stack {
  display: grid;
  gap: 18px;
}

.lead {
  color: var(--muted);
  font-size: 1.02rem;
}

.auth-copy {
  display: grid;
  gap: 12px;
}

.auth-warnings {
  display: grid;
  gap: 8px;
  border-left: 4px solid var(--warning);
  padding-left: 12px;
  color: #5c4a1d;
  font-size: 0.95rem;
}

.form-row {
  display: grid;
  gap: 8px;
}

.form-row label {
  font-weight: 700;
}

.error-text {
  color: var(--danger);
  font-weight: 700;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.primary {
  border-color: var(--brand);
  background: var(--brand);
  color: #ffffff;
  font-weight: 700;
}

.primary:hover:not(:disabled) {
  background: var(--brand-dark);
  color: #ffffff;
}

.danger-button {
  border-color: #e3b6b2;
  color: var(--danger);
}

.text-button {
  min-height: auto;
  border: none;
  padding: 0;
  background: transparent;
  color: var(--brand-dark);
  font-weight: 700;
}

.mode-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.mode-list li {
  border-left: 4px solid var(--line-strong);
  padding: 6px 0 6px 12px;
}

.mode-list strong {
  display: block;
}

.case-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.progress-text {
  color: var(--muted);
  font-weight: 700;
}

.progress-track {
  overflow: hidden;
  height: 10px;
  border-radius: 999px;
  background: #e7ecea;
}

.progress-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--brand);
}

.case-card {
  display: grid;
  gap: 20px;
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.tag,
.status-badge,
.diff-badge {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.9rem;
  font-weight: 700;
}

.tag {
  border: 1px solid var(--line);
  background: var(--surface-soft);
  color: var(--muted);
}

.case-title {
  font-size: 1.55rem;
}

.section-block {
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.section-block h3 {
  font-size: 1.08rem;
}

.choice-grid {
  display: grid;
  gap: 10px;
}

.choice-grid.education {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.choice-grid.prediction {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.choice-button {
  display: grid;
  min-height: 78px;
  place-items: center;
  gap: 4px;
  text-align: center;
}

.choice-button .choice-main {
  font-size: 1.18rem;
  font-weight: 800;
}

.choice-button .choice-sub {
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.choice-button[aria-pressed="true"] {
  border-color: var(--brand);
  background: #e6f6f2;
  color: var(--brand-dark);
}

.judgment-panel {
  display: grid;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: #fbfcfb;
}

.judgment-grid,
.summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.fact-box {
  display: grid;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  background: var(--surface);
}

.fact-box span {
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 700;
}

.fact-box strong {
  font-size: 1.1rem;
}

.recognized {
  border-color: var(--success-line);
  background: var(--success-bg);
  color: var(--success-ink);
}

.partially_recognized {
  border-color: var(--partial-line);
  background: var(--partial-bg);
  color: var(--partial-ink);
}

.not_recognized {
  border-color: var(--none-line);
  background: var(--none-bg);
  color: var(--none-ink);
}

.diff-large {
  border-color: #f4a7a0;
  background: #fff0ee;
  color: var(--danger);
}

.diff-medium {
  border-color: #e4c66a;
  background: #fff7d9;
  color: var(--warning);
}

.diff-small {
  border-color: #c9d6d2;
  background: #f1f5f3;
  color: #3f5350;
}

.diff-pending {
  border-color: #c9c3de;
  background: #f5f2fb;
  color: #51446e;
}

.notice-bar {
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  background: #fffaf0;
  color: #63450d;
  box-shadow: none;
}

.result-textarea {
  min-height: 360px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.92rem;
  line-height: 1.65;
}

.reason-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 22px;
}

.reason-list li {
  padding-left: 4px;
}

.step-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 24px;
}

.step-list li {
  padding-left: 4px;
}

.copy-status {
  color: var(--brand-dark);
  font-weight: 700;
}

.pro-panel {
  border: 1px solid var(--success-line);
  border-radius: var(--radius);
  padding: 18px;
  background: #f3fbf7;
}

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

.analysis-output {
  display: grid;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.analysis-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 22px;
}

.insight-list {
  display: grid;
  gap: 12px;
}

.insight-item {
  display: grid;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  background: var(--surface);
}

.insight-item span,
.note-text {
  color: var(--muted);
}

.footer-note {
  margin-top: 24px;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 820px) {
  .app-shell {
    padding: 20px 14px 28px;
  }

  .app-title {
    font-size: 1.65rem;
  }

  .panel,
  .case-card {
    padding: 18px;
  }

  .choice-grid.education,
  .choice-grid.prediction,
  .judgment-grid,
  .summary-grid,
  .pro-preview {
    grid-template-columns: 1fr;
  }

  .choice-button {
    min-height: 62px;
    justify-items: start;
    text-align: left;
  }

  .brand-row {
    align-items: flex-start;
  }

  .mark {
    width: 46px;
    height: 46px;
  }
}