/* メール漏洩照合 MVP mock — design-system.md 準拠 / FR-14: 外部フォント CDN なし */
:root {
  --color-primary: #047857;
  --color-on-primary: #ffffff;
  --color-secondary: #10b981;
  --color-accent: #b45309;
  --color-on-accent: #ffffff;
  --color-background: #ecfdf5;
  --color-foreground: #064e3b;
  --color-card: #ffffff;
  --color-card-foreground: #064e3b;
  --color-muted: #f0fdf4;
  --color-muted-foreground: #334155;
  --color-border: #a7f3d0;
  --color-destructive: #b91c1c;
  --color-ring: #047857;
  --radius: 8px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP",
    "Segoe UI", Meiryo, sans-serif;
  --max: 720px;
  --transition: 160ms ease;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-foreground);
  background: var(--color-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

a:hover {
  color: #065f46;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-card);
  color: var(--color-foreground);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip-link:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.site-header {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
}

.site-header__inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-foreground);
  text-decoration: none;
  cursor: pointer;
}

.brand:hover {
  color: var(--color-primary);
}

.brand svg {
  flex-shrink: 0;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav a {
  text-decoration: none;
  color: var(--color-muted-foreground);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

main {
  flex: 1;
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

@media (min-width: 768px) {
  main {
    padding: 2rem 1.5rem 4rem;
  }
}

h1 {
  font-size: 1.5rem;
  line-height: 1.35;
  margin: 0 0 0.75rem;
  font-weight: 700;
}

@media (min-width: 768px) {
  h1 {
    font-size: 1.75rem;
  }
}

h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.75rem;
  font-weight: 700;
}

.lead {
  color: var(--color-muted-foreground);
  margin: 0 0 1.25rem;
}

.callout {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin: 1.25rem 0;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.callout__icon {
  flex-shrink: 0;
  margin-top: 0.15rem;
  color: var(--color-primary);
}

.callout h2 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.callout p {
  margin: 0;
  color: var(--color-muted-foreground);
  font-size: 0.95rem;
}

.meta-box {
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
  color: var(--color-muted-foreground);
}

.meta-box dl {
  margin: 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.25rem 1rem;
}

.meta-box dt {
  font-weight: 600;
  color: var(--color-foreground);
}

.meta-box dd {
  margin: 0;
}

.actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

@media (min-width: 480px) {
  .actions {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.15rem;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--transition), color var(--transition),
    border-color var(--transition), opacity var(--transition);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.btn--primary:hover {
  background: #065f46;
  color: var(--color-on-primary);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.btn--accent:hover {
  background: #92400e;
  color: var(--color-on-accent);
}

.btn--ghost {
  background: var(--color-card);
  color: var(--color-foreground);
  border-color: #047857;
}

.btn--ghost:hover {
  background: var(--color-muted);
  border-color: #065f46;
  color: #065f46;
}

.links-secondary {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.9rem;
}

.links-secondary li {
  margin-bottom: 0.35rem;
}

.section-tips {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.section-tips ul {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  color: var(--color-muted-foreground);
  font-size: 0.9rem;
}

.filter-bar {
  margin: 1rem 0 1.25rem;
}

.filter-bar label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.filter-bar__row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-bar input[type="search"] {
  flex: 1 1 200px;
  min-width: 0;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-card);
  color: var(--color-foreground);
}

.filter-bar input[type="search"]::placeholder {
  color: #64748b;
}

.filter-status {
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
  margin: 0 0 1rem;
}

.case-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.case-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  transition: border-color var(--transition);
}

.case-card:hover {
  border-color: var(--color-secondary);
}

.case-card h2 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.case-card .meta {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
}

.case-card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.65rem 0;
  padding: 0;
  list-style: none;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  background: var(--color-muted);
  border: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: var(--color-foreground);
}

.case-card .ext-link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.empty-filter {
  background: var(--color-card);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem;
  text-align: center;
  color: var(--color-muted-foreground);
}

[hidden] {
  display: none !important;
}

.prose p {
  margin: 0 0 1rem;
  color: var(--color-muted-foreground);
}

.prose ul {
  color: var(--color-muted-foreground);
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.prose strong {
  color: var(--color-foreground);
  font-weight: 600;
}

.site-footer {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding: 1.25rem 1rem;
  font-size: 0.8rem;
  color: var(--color-muted-foreground);
}

.site-footer__inner {
  max-width: 960px;
  margin: 0 auto;
}

.site-footer p {
  margin: 0 0 0.4rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}


.brand__text {
  display: inline-flex;
  flex-direction: column;
  gap: 0.05rem;
  line-height: 1.2;
}

.brand__tag {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--color-muted-foreground);
}

/* 360px: stack nav, full-width buttons */
@media (max-width: 400px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .nav {
    width: 100%;
    gap: 0.5rem 0.85rem;
  }
  .btn {
    width: 100%;
  }
  .filter-bar__row {
    flex-direction: column;
  }
  .filter-bar__row input[type="search"] {
    flex: 0 0 auto;
  }
  .filter-bar__row .btn {
    width: 100%;
  }
  main {
    padding: 1.25rem 0.75rem 2.5rem;
  }
  h1 {
    font-size: 1.35rem;
  }
}

/* 事案カードの詳細・集計 */
.case-card .service {
  margin: -0.2rem 0 0.35rem;
  font-size: 0.92rem;
  color: var(--color-muted-foreground);
}
.status {
  display: inline-block;
  margin-left: 0.5rem;
  padding: 0 0.45rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--color-muted-foreground);
  background: var(--color-muted);
}
.status--confirmed {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: #fffbeb;
}
.case-facts {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.15rem 0.75rem;
  margin: 0.5rem 0 0.75rem;
  font-size: 0.88rem;
}
.case-facts dt {
  color: var(--color-muted-foreground);
}
.case-facts dd {
  margin: 0;
}
.summary {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin: 0 0 1.5rem;
}
.summary h2 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}
.summary__note {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
  color: var(--color-muted-foreground);
}
.summary__grid {
  display: grid;
  gap: 1rem;
  align-items: start;
}
@media (min-width: 640px) {
  .summary__grid {
    grid-template-columns: 1fr 1fr;
  }
}
.summary-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.summary-table caption {
  text-align: left;
  font-weight: 700;
  margin-bottom: 0.35rem;
}
.summary-table th {
  text-align: left;
  font-weight: 500;
  white-space: nowrap;
  padding: 0.2rem 0.6rem 0.2rem 0;
  vertical-align: middle;
}
.summary-table td {
  padding: 0.2rem 0;
  width: 100%;
  vertical-align: middle;
}
.bar-cell {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.bar-track {
  flex: 1;
  min-width: 3rem;
}
.bar {
  display: block;
  height: 0.7rem;
  min-width: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}
.bar-num {
  white-space: nowrap;
}
.bar-pct {
  color: var(--color-muted-foreground);
}

.case-history {
  margin: 0 0 0.75rem;
  font-size: 0.88rem;
}
.case-history summary {
  cursor: pointer;
  color: var(--color-primary);
}
.case-history ol {
  margin: 0.35rem 0 0;
  padding-left: 1.25rem;
}
.tag--muted {
  background: var(--color-muted);
  color: var(--color-muted-foreground);
}
.filter-bar .filter-check {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0.6rem 0 0;
  font-weight: 400;
  font-size: 0.9rem;
}