/* ── Ping (/tools/ping/) ─────────────────────────────────────────────────── */
/* Latency bands pair a colour with a word in the legend and in each row's
   screen-reader text; colours come from the theme tokens so dark mode follows. */
.ping-page {
  --ping-fast: var(--green);
  --ping-moderate: var(--amber);
  --ping-slow: var(--red);
  --ping-fast-ink: color-mix(in srgb, var(--green) 78%, var(--txt));
  --ping-moderate-ink: color-mix(in srgb, var(--amber) 78%, var(--txt));
  --ping-slow-ink: color-mix(in srgb, var(--red) 85%, var(--txt));
}

.ping-form { display: grid; grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr)); gap: 16px; align-items: end; }
.ping-field { min-width: 0; margin: 0; padding: 0; border: 0; }
.ping-field > label, .ping-field legend { display: block; font-weight: 600; margin-bottom: 8px; padding: 0; }
.ping-field input[type="text"], .ping-field input[type="number"], .ping-field select { width: 100%; box-sizing: border-box; padding: 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); color: var(--txt); font: inherit; }
.ping-field input:focus-visible, .ping-field select:focus-visible { outline: 2px solid var(--primary); outline-offset: 1px; }
.ping-protocol { grid-column: 1 / -2; }
.ping-protocol-options { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 20px; min-height: 46px; }
.ping-protocol-options > label { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.ping-protocol-options input[type="radio"] { width: 18px; height: 18px; margin: 0; accent-color: var(--primary-fill); }
.ping-port { display: inline-flex; align-items: center; gap: 8px; }
.ping-port[hidden] { display: none; }
.ping-port label { font-weight: 600; }
.ping-port input { width: 100px !important; padding: 9px 10px !important; }
.ping-form button { justify-self: stretch; padding: 13px 20px; white-space: nowrap; }
.ping-form button:disabled { opacity: .65; cursor: wait; }
.ping-form-help { margin: 16px 0 0; color: var(--txt-3); font-size: var(--text-small); line-height: 1.6; }

.ping-message { min-height: 1.5em; margin: 20px 0 0; color: var(--txt-2); }
.ping-message:empty { min-height: 0; margin: 0; }
.ping-results { margin-top: 24px; }
.ping-results:focus { outline: none; }
.ping-results-title { margin: 0 0 6px; font-size: var(--text-h2); overflow-wrap: anywhere; }
.ping-meta { margin: 0 0 20px; color: var(--txt-3); font-size: var(--text-small); overflow-wrap: anywhere; }
.ping-mono { font-family: var(--font-mono); }

.ping-verdict { display: flex; gap: 14px; align-items: flex-start; padding: 18px 20px; border: 1px solid var(--border); border-left-width: 4px; border-radius: var(--radius-card); background: var(--surface); }
.ping-verdict:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.ping-verdict p { margin: 0; line-height: 1.6; color: var(--txt-2); }
.ping-verdict .ping-verdict-title { font-weight: 700; color: var(--txt); margin-bottom: 2px; }
.ping-icon { flex-shrink: 0; margin-top: 1px; }
.ping-verdict--ok { border-left-color: var(--ping-fast); }
.ping-verdict--ok .ping-icon { color: var(--ping-fast-ink); }
.ping-verdict--warn { border-left-color: var(--ping-moderate); }
.ping-verdict--warn .ping-icon { color: var(--ping-moderate-ink); }
.ping-verdict--bad { border-left-color: var(--ping-slow); }
.ping-verdict--bad .ping-icon { color: var(--ping-slow-ink); }

.ping-tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin: 16px 0 0; }
.ping-tile { padding: 16px; border: 1px solid var(--border); border-radius: var(--radius-card); background: var(--surface); min-width: 0; }
.ping-tile dt { font-size: var(--text-caption); font-weight: 600; color: var(--txt-3); text-transform: uppercase; letter-spacing: .04em; }
.ping-tile dd { margin: 6px 0 0; display: flex; flex-direction: column; gap: 2px; }
.ping-tile strong { font-size: 1.5rem; font-weight: 750; font-variant-numeric: tabular-nums; color: var(--txt); }
.ping-tile span { font-size: var(--text-small); color: var(--txt-3); overflow-wrap: anywhere; }

/* Latency chart: HTML rows so long names and narrow screens reflow. */
.ping-chart { margin: 24px 0 0; padding: 24px; border: 1px solid var(--border); border-radius: var(--radius-card); background: var(--surface); }
.ping-chart figcaption h3 { margin: 0 0 4px; font-size: var(--text-card-title); }
.ping-chart figcaption p { margin: 0; color: var(--txt-3); font-size: var(--text-small); line-height: 1.6; }
.ping-legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 14px 0 18px; padding: 0; list-style: none; font-size: var(--text-small); color: var(--txt-2); }
.ping-legend li { display: inline-flex; align-items: center; gap: 6px; }
.ping-legend-range { color: var(--txt-3); }
.ping-swatch { width: 14px; height: 10px; border-radius: 3px; background: var(--ping-band); }
.ping-legend--fast, .ping-row--fast { --ping-band: var(--ping-fast); --ping-band-ink: var(--ping-fast-ink); }
.ping-legend--moderate, .ping-row--moderate { --ping-band: var(--ping-moderate); --ping-band-ink: var(--ping-moderate-ink); }
.ping-legend--slow, .ping-row--slow { --ping-band: var(--ping-slow); --ping-band-ink: var(--ping-slow-ink); }

.ping-rows { margin: 0; padding: 0; list-style: none; }
.ping-row, .ping-axis { display: grid; grid-template-columns: minmax(120px, 190px) minmax(0, 1fr) 96px; gap: 16px; align-items: center; }
.ping-row { padding: 8px 0; border-top: 1px solid var(--border); }
.ping-row:first-child { border-top: 0; }
.ping-row-label { display: flex; flex-direction: column; min-width: 0; }
.ping-row-label strong { font-size: var(--text-small); font-weight: 650; overflow-wrap: anywhere; }
.ping-row-label span { font-size: var(--text-caption); color: var(--txt-3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ping-track, .ping-axis-track { position: relative; height: 26px; }
.ping-track { background-image: linear-gradient(to right, var(--border) 1px, transparent 1px); background-size: var(--ping-step, 25%) 100%; background-repeat: repeat-x; border-right: 1px solid var(--border); }
.ping-range { position: absolute; top: 8px; height: 10px; border-radius: 5px; background: color-mix(in srgb, var(--ping-band) 35%, transparent); border: 1px solid var(--ping-band); box-sizing: border-box; }
.ping-tick { position: absolute; top: 4px; width: 2px; height: 18px; margin-left: -1px; border-radius: 1px; background: var(--ping-band-ink); opacity: .55; }
.ping-avg { position: absolute; top: 6px; width: 14px; height: 14px; margin-left: -7px; border-radius: 50%; background: var(--ping-band); border: 2px solid var(--surface); box-sizing: border-box; box-shadow: 0 0 0 1px var(--ping-band-ink); }
.ping-none { position: absolute; inset: 3px 0; display: flex; align-items: center; padding-left: 10px; border: 1px dashed var(--txt-4); border-radius: 6px; font-size: var(--text-caption); color: var(--txt-3); }
.ping-row-value { display: flex; flex-direction: column; text-align: right; font-variant-numeric: tabular-nums; }
.ping-row-value span { font-weight: 700; color: var(--ping-band-ink, var(--txt-2)); }
.ping-row-value small { font-size: var(--text-caption); color: var(--txt-3); }
.ping-row--none .ping-row-value span { font-weight: 600; font-size: var(--text-small); color: var(--txt-3); }
.ping-axis { margin-top: 2px; }
.ping-axis-track { height: 18px; }
.ping-axis-track span { position: absolute; top: 0; transform: translateX(-50%); font-size: var(--text-caption); color: var(--txt-3); font-variant-numeric: tabular-nums; }
.ping-axis-track span:first-child { transform: none; }
.ping-axis-track span:last-child { transform: translateX(-100%); }
.ping-axis-unit { font-size: var(--text-caption); color: var(--txt-3); text-align: right; }

.ping-table-wrap { margin-top: 24px; overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-card); background: var(--surface); }
.ping-table-wrap:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.ping-table { width: 100%; border-collapse: collapse; font-size: var(--text-small); }
.ping-table caption { padding: 16px 16px 8px; text-align: left; font-weight: 700; font-size: var(--text-card-title); color: var(--txt); }
.ping-table th, .ping-table td { padding: 10px 12px; border-top: 1px solid var(--border); text-align: left; vertical-align: top; }
.ping-table thead th { font-size: var(--text-caption); font-weight: 600; color: var(--txt-3); white-space: nowrap; }
.ping-table tbody th { font-weight: 600; color: var(--txt); }
.ping-table small { color: var(--txt-3); }
.ping-num { text-align: right !important; font-variant-numeric: tabular-nums; white-space: nowrap; }
.ping-table .ping-mono { font-size: var(--text-compact); white-space: nowrap; }

.ping-section { margin-top: 24px; }
.ping-section h3 { margin: 0 0 10px; font-size: var(--text-card-title); }
.ping-raw { border: 1px solid var(--border); border-radius: 10px; background: var(--surface); margin-top: 8px; }
.ping-raw summary { padding: 10px 14px; cursor: pointer; font-weight: 600; font-size: var(--text-small); }
.ping-raw summary:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.ping-raw pre { margin: 0; padding: 12px 14px; border-top: 1px solid var(--border); background: var(--surface2); font-size: var(--text-caption); line-height: 1.55; white-space: pre-wrap; overflow-wrap: anywhere; border-radius: 0 0 10px 10px; }
.ping-note { margin: 20px 0 0; color: var(--txt-3); font-size: var(--text-small); line-height: 1.6; }

.ping-about { margin-top: 48px; }
.ping-about h2 { font-size: var(--text-h2); margin: 0 0 12px; }
.ping-about-checks { margin-bottom: 16px; }
.ping-about .tools-intro a { color: var(--primary-ink); }

@media (max-width: 860px) {
  .ping-form { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ping-field--target { grid-column: 1 / -1; }
  .ping-protocol { grid-column: 1 / -1; }
  .ping-form button { grid-column: 1 / -1; }
  .ping-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .ping-form { grid-template-columns: minmax(0, 1fr); }
  .ping-row, .ping-axis { grid-template-columns: minmax(0, 1fr) 84px; gap: 4px 12px; }
  .ping-row-label { grid-column: 1 / -1; }
  .ping-axis-spacer { display: none; }
  .ping-chart { padding: 16px; }
}
@media (max-width: 380px) {
  .ping-tiles { grid-template-columns: minmax(0, 1fr); }
}