/* ---------- tokens ---------- */

:root {
  --paper: #e2e8ea;
  --card: #ffffff;
  --ink: #000000;
  --muted: #2c6478;
  --rule: #b9c5ca;
  --rule-soft: #d9e0e3;
  --accent: #0a6a89;
  --signal: #9c3d16;
  --ok: #1f6547;
  --veil: rgba(10, 18, 22, 0.55);

  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;
  --sans: system-ui, -apple-system, 'Segoe UI', 'Hiragino Sans',
          'Noto Sans JP', 'Yu Gothic UI', sans-serif;

  --gutter: 15rem;

--paper: #f2f8fb;
  --card: #ffffff;
  --rule: #cbdde7;
  --rule-soft: #e2edf3;

  --ink: #000000;
  --muted: #1a1a1a;
  --accent: #0a6a89;

}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0e1417;
    --card: #171f23;
    --ink: #f4f8f9;
    --muted: #7dc0d6;
    --rule: #33424a;
    --rule-soft: #263136;
    --accent: #6ec6e0;
    --signal: #e0a074;
    --ok: #7ecfa5;
    --veil: rgba(0, 0, 0, 0.7);
  }
}

/* ---------- base ---------- */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 2px;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- header ---------- */

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 14px 28px;
  border-bottom: 1px solid var(--rule);
  background: var(--card);
}

.logo {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.logo span {
  color: var(--muted);
  font-weight: 400;
}

.logo:hover {
  text-decoration: none;
}

.nav {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.nav:hover {
  color: var(--ink);
  text-decoration: none;
}

.search {
  display: flex;
  flex: 1;
  min-width: 240px;
  max-width: 520px;
  border: 1px solid var(--rule);
  background: var(--card);
}

.search:focus-within {
  border-color: var(--accent);
}

.search input {
  flex: 1;
  padding: 9px 13px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  outline: none;
}

.search input::placeholder {
  color: var(--muted);
  opacity: 0.75;
}

.search button {
  padding: 9px 18px;
  border: 0;
  background: var(--accent);
  color: #ffffff;
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.03em;
  white-space: nowrap;
  cursor: pointer;
}

.search button:hover {
  filter: brightness(1.12);
}

/* ---------- main ---------- */

.main {
  max-width: 940px;
  margin: 0 auto;
  padding: 52px 28px 96px;
}

/* ---------- hero ---------- */

.hero {
  padding: 44px 0 40px;
  border-bottom: 1px solid var(--rule);
}

.hero-label {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero-ip {
  margin: 10px 0 6px;
  color: var(--ink);
  font-family: var(--mono);
  font-size: clamp(32px, 7vw, 54px);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  word-break: break-all;
}

.hero-ip::after {
  content: '';
  display: inline-block;
  width: 0.42em;
  height: 0.9em;
  margin-left: 0.12em;
  transform: translateY(0.08em);
  background: var(--accent);
  animation: blink 1.2s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-meta {
  color: var(--ink);
  font-size: 16px;
}

.hero-link {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 15px;
}

/* ---------- lead ---------- */

.lead {
  margin-top: 44px;
}

.lead h1 {
  margin-bottom: 14px;
  color: var(--ink);
  font-size: 23px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.lead p {
  max-width: 62ch;
  color: var(--ink);
  font-size: 16px;
}

.example {
  display: flex;
  align-items: baseline;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
}

.example span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.example a {
  font-family: var(--mono);
  font-size: 15px;
}

/* ---------- detail head ---------- */

.title {
  color: var(--ink);
  font-family: var(--mono);
  font-size: clamp(26px, 5vw, 36px);
  font-weight: 500;
  letter-spacing: -0.03em;
  word-break: break-all;
}

.subtitle {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 16px 0 36px;
}

.badge {
  padding: 2px 10px;
  border: 1px solid var(--muted);
  background: var(--card);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.badge-cloud {
  border-color: var(--accent);
  color: var(--accent);
}

.badge-tor {
  border-color: var(--signal);
  color: var(--signal);
}

.badge-ok {
  border-color: var(--ok);
  color: var(--ok);
}

/* ---------- record sheet ---------- */

.card {
  margin-bottom: 26px;
  border: 1px solid var(--rule);
  background: var(--card);
}

.card h2 {
  padding: 12px 20px;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.table th,
.table td {
  padding: 12px 20px;
  border-bottom: 1px solid var(--rule-soft);
  text-align: left;
  vertical-align: top;
  word-break: break-word;
}

.table tr:last-child th,
.table tr:last-child td {
  border-bottom: 0;
}

/* signature: one continuous rule between key and value, aligned across all cards */
.table th {
  width: var(--gutter);
  border-right: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.table td {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.table code {
  display: inline-block;
  margin: 0 5px 5px 0;
  padding: 1px 8px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  word-break: break-all;
}

.table a code {
  border-color: var(--accent);
  color: var(--accent);
}

.note {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
}

.raw {
  max-height: 460px;
  overflow: auto;
  padding: 18px 20px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ---------- error ---------- */

.error {
  margin-top: 28px;
  padding: 14px 18px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--signal);
  background: var(--card);
  color: var(--signal);
  font-size: 16px;
}

/* ---------- footer ---------- */

.footer {
  padding: 28px;
  border-top: 1px solid var(--rule);
  text-align: center;
}

.footer p {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.01em;
}

.sister {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.sister a {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
}

.sister a:hover {
  color: var(--accent);
}

/* ---------- language switcher ---------- */

.lang-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 13px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
}

.lang-button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.lang-icon {
  color: var(--accent);
  flex: none;
}

.lang-caret {
  color: var(--muted);
  flex: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 40px 20px;
  background: var(--veil);
  overflow-y: auto;
}

.modal[hidden] {
  display: none;
}

.modal-sheet {
  width: 100%;
  max-width: 860px;
  border: 1px solid var(--rule);
  border-radius: 10px;
  background: var(--card);
  overflow: hidden;
}

.modal-head {
  position: sticky;
  top: 0;
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--rule);
  background: var(--card);
}

.modal-filter {
  flex: 1;
  padding: 13px 18px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 15px;
  outline: none;
}

.modal-filter::placeholder {
  color: var(--muted);
  opacity: 0.75;
}

.modal-close {
  padding: 0 18px;
  border: 0;
  border-left: 1px solid var(--rule);
  background: transparent;
  color: var(--muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--ink);
}

.modal-body {
  padding: 4px 0 8px;
}

.lang-group {
  padding: 14px 18px;
  border-bottom: 1px solid var(--rule-soft);
}

.lang-group:last-child {
  border-bottom: 0;
}

.lang-head {
  margin-bottom: 8px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: left;
}

.lang-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 2px 12px;
}

.lang-item {
  padding: 5px 8px;
  font-size: 15px;
  text-align: left;
}

a.lang-item:hover {
  background: var(--paper);
  text-decoration: none;
}

.lang-item.is-active {
  background: var(--paper);
  color: var(--ink);
  font-weight: 600;
}

.lang-item.is-active::after {
  content: ' ✓';
  color: var(--accent);
}

/* ---------- RTL ---------- */

[dir="rtl"] .table th,
[dir="rtl"] .example,
[dir="rtl"] .lang-head,
[dir="rtl"] .lang-item {
  text-align: right;
}

[dir="rtl"] .table th {
  border-right: 0;
  border-left: 1px solid var(--rule);
}

[dir="rtl"] .modal-close {
  border-left: 0;
  border-right: 1px solid var(--rule);
}

[dir="rtl"] .error {
  border-left: 1px solid var(--rule);
  border-right: 3px solid var(--signal);
}

[dir="rtl"] .table code {
  margin: 0 0 5px 5px;
}

/* ---------- responsive ---------- */

@media (max-width: 760px) {
  .header {
    gap: 14px;
    padding: 12px 16px;
  }

  .search {
    order: 3;
    max-width: none;
    width: 100%;
  }

  .main {
    padding: 32px 16px 64px;
  }

  .hero {
    padding: 28px 0 32px;
  }

  .table {
    table-layout: auto;
  }

  .table th,
  .table td {
    display: block;
    padding: 0 16px;
    border-bottom: 0;
  }

  .table th {
    width: auto;
    padding-top: 14px;
    border-right: 0;
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .table td {
    padding-bottom: 14px;
  }

  .table tr {
    display: block;
    border-bottom: 1px solid var(--rule-soft);
  }

  .table tr:last-child {
    border-bottom: 0;
  }

  .modal {
    padding: 0;
  }

  .modal-sheet {
    min-height: 100%;
    border: 0;
  }

  .lang-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-ip::after {
    animation: none;
  }

  * {
    transition: none !important;
  }
}