/* Shared theme tokens keep both IP families and their optional details aligned. */
:root {
  color-scheme: light dark;
  --bg: #fff;
  --ink: #192025;
  --muted: #899196;
  --line: #eceeef;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); line-height: 1.5; }
[hidden] { display: none !important; }
main { max-width: 1080px; margin: 0 auto; padding: clamp(48px, 8vh, 100px) 32px 20px; text-align: center; }
.cards { display: flex; flex-direction: column; }
.card { padding: 28px 0 45px; min-width: 0; }
.card + .card { border-top: 1px solid var(--line); padding-top: 42px; }
.flag { display: block; width: 56px; height: 42px; object-fit: contain; margin: 0 auto 20px; border-radius: 3px; filter: drop-shadow(0 1px 2px #00000014); }
h1, h2 { font-size: 11px; letter-spacing: 2px; font-weight: 550; color: var(--muted); margin: 0 0 12px; }
.address-line { display: flex; align-items: center; justify-content: center; gap: 14px; }
.address { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: clamp(27px, 4.5vw, 49px); font-weight: 560; letter-spacing: -1.8px; line-height: 1.35; margin: 0; overflow-wrap: anywhere; min-width: 0; border: 0; padding: 0; background: transparent; color: inherit; cursor: pointer; }
.address:disabled { cursor: default; opacity: 1; }
.address-value { display: inline-block; max-width: 100%; }
:root[data-blur-ipv4=true] #ipv4[data-state=ok] .address-value,
:root[data-blur-ipv6=true] #ipv6[data-state=ok] .address-value { filter: blur(20px); user-select: none; }
#ipv4 .address { font-size: clamp(38px, 7vw, 66px); }
#ipv6 .address { font-size: clamp(20px, 2.8vw, 32px); letter-spacing: -.6px; }
.copy, .refresh { display: inline-grid; place-items: center; color: var(--muted); background: transparent; border: 0; border-radius: 6px; padding: 7px; cursor: pointer; flex-shrink: 0; }
.copy:hover, .refresh:hover { color: var(--ink); background: var(--line); }
:focus-visible { outline: 2px solid var(--ink); outline-offset: 4px; }
.copy { opacity: .55; }
.copy:hover, .copy:focus-visible { opacity: 1; }
dl { margin: 24px 0 0; }
dl > div + div { margin-top: 13px; }
dt { color: var(--muted); font-size: 10px; margin-bottom: 2px; }
dd { margin: 0; font-size: 14px; overflow-wrap: anywhere; }
/* Put successful results above unavailable families during loading/fallback.
   app.js also reorders the DOM after probes finish for screen-reader parity. */
.card[data-state=empty] { order: 1; padding: 24px 0; border-top: 1px solid var(--line); }
.card[data-state=empty] .address { font-family: inherit; font-size: 16px !important; color: var(--muted); letter-spacing: 0; font-weight: 400; }
.card[data-state=ok] { border-top: 0; }
.card[data-state=ok] ~ .card[data-state=ok] { border-top: 1px solid var(--line); }
.geo-status { font-size: 11px; color: var(--muted); margin: 6px 0; }
.geo-status:empty { display: none; }
.refresh { margin-top: 10px; }
.refresh:disabled { cursor: wait; opacity: .4; }
footer { text-align: center; color: var(--muted); font-size: 9px; padding: 20px 16px 24px; }
footer a { color: inherit; text-decoration: none; }
footer a:hover { text-decoration: underline; text-underline-offset: 3px; }
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 7px; font-size: 12px; max-width: 90vw; text-align: center; }
/* Connection announcements stay accessible without adding visible page copy. */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
/* Only split successful dual-stack results; single-family and mobile views stay stacked. */
@media (min-width: 960px) {
  .cards:has(> .card[data-state=ok] ~ .card[data-state=ok]) {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .cards:has(> .card[data-state=ok] ~ .card[data-state=ok]) > .card { padding: 28px 24px 36px; }
  .cards:has(> .card[data-state=ok] ~ .card[data-state=ok]) > .card + .card { border-top: 0; border-left: 1px solid var(--line); }
  .cards:has(> .card[data-state=ok] ~ .card[data-state=ok]) .address-line { min-height: 88px; }
  .cards:has(> .card[data-state=ok] ~ .card[data-state=ok]) #ipv4 .address { font-size: clamp(36px, 3.6vw, 44px); }
  .cards:has(> .card[data-state=ok] ~ .card[data-state=ok]) #ipv6 .address { font-size: clamp(15px, 1.5vw, 18px); }
}
@media (max-width: 600px) {
  main { padding: 70px 22px 12px; }
  .card { padding: 22px 0 34px; }
  .address { letter-spacing: -1px; }
  #ipv4 .address { font-size: clamp(26px, 8vw, 38px); }
  .address-line { gap: 8px; }
  .copy { padding: 4px; }
  .flag { width: 48px; height: 36px; }
  dd { font-size: 13px; }
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme=light]) { --bg: #121619; --ink: #edf0f2; --muted: #899399; --line: #272d31; }
}
:root[data-theme=dark] { color-scheme: dark; --bg: #121619; --ink: #edf0f2; --muted: #899399; --line: #272d31; }
:root[data-theme=light] { color-scheme: light; --bg: #fff; --ink: #192025; --muted: #899196; --line: #eceeef; }
.display-controls { position: absolute; top: 16px; right: 24px; display: flex; gap: 8px; align-items: center; }
.display-control, .language-controls button { font: inherit; font-size: 11px; color: var(--ink); background: var(--bg); border: 1px solid var(--line); padding: 7px 10px; border-radius: 6px; cursor: pointer; }
.display-control:hover, .language-controls button:hover { background: var(--line); }
.language-controls { display: flex; }
.language-controls button:first-child { border-radius: 6px 0 0 6px; }
.language-controls button:last-child { border-radius: 0 6px 6px 0; border-left: 0; }
.language-controls button[aria-pressed=true], #blur-toggle[aria-pressed=true], #blur-toggle[aria-pressed=mixed] { background: var(--line); font-weight: 600; }
@media (max-width: 600px) { .display-controls { right: 16px; top: 14px; gap: 6px; } }

/* Supplemental database fields are secondary to the address and collapsed by default. */
.extra { margin: 19px auto 0; max-width: 440px; }
.extra summary { color: var(--muted); font-size: 11px; cursor: pointer; width: fit-content; margin: auto; }
.extra dl { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; margin-top: 20px; }
.extra dl > div + div { margin-top: 0; }
@media (max-width: 400px) { .extra dl { grid-template-columns: 1fr; } }

/* Local browser diagnostics follow the IP cards and stay compact until opened. */
.browser-section { margin-top: 46px; padding-top: 30px; border-top: 1px solid var(--line); text-align: left; }
.browser-heading { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.browser-heading h2 { font-size: 19px; letter-spacing: -.3px; font-weight: 600; color: var(--ink); margin: 0; }
.browser-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.browser-action { font: inherit; font-size: 11px; border: 1px solid var(--line); border-radius: 6px; color: var(--ink); background: var(--bg); padding: 7px 10px; cursor: pointer; }
.browser-action:hover { background: var(--line); }
.browser-action:disabled { opacity: .5; cursor: default; }
.browser-icon { display: inline-grid; place-items: center; width: 33px; height: 33px; padding: 6px; flex-shrink: 0; }
#browser-toggle-groups[aria-expanded=true] svg { transform: rotate(180deg); }
.browser-note, .browser-feedback { font-size: 12px; color: var(--muted); max-width: 820px; }
.browser-note { margin: 10px 0 24px; }
.browser-feedback { font-size: 11px; margin: 18px 0; }
.browser-overview { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 16px; }
.browser-overview > div { border-left: 2px solid var(--line); padding-left: 12px; min-width: 0; }
.browser-label { color: var(--muted); font-size: 10px; }
.browser-overview p { font-size: 14px; font-weight: 550; margin: 4px 0 0; overflow-wrap: anywhere; }
.browser-groups { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 24px; align-items: start; }
.browser-group { min-width: 0; border: 1px solid var(--line); border-radius: 8px; }
.browser-group summary { font-size: 12px; font-weight: 550; cursor: pointer; padding: 14px; }
.browser-count { float: right; font-weight: 400; font-size: 10px; color: var(--muted); padding-top: 2px; }
.browser-group dl { margin: 0; padding: 0 14px 14px; }
.browser-group-note { margin: 0 14px 12px; color: var(--muted); font-size: 11px; }
.browser-group dl > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: 14px; padding: 10px 0; border-top: 1px solid var(--line); }
.browser-group dl > div + div { margin-top: 0; }
.browser-group dt { font-size: 11px; margin: 0; }
.browser-group dd { font-size: 11px; white-space: pre-wrap; }
@media (max-width: 700px) {
  .browser-groups { grid-template-columns: 1fr; gap: 10px; }
  .browser-overview { grid-template-columns: 1fr; gap: 14px; }
  .browser-section { margin-top: 32px; }
}