/* SpeedCheck Pro — Signal Studio. Presentation only; shared app styles stay separate. */
:root {
  color-scheme: dark;
  --primary-bg: #101411;
  --card-bg: #171c18;
  --text-primary: #f5f6f3;
  --text-secondary: #b0b7b1;
  --accent-blue: #c8f66b; /* Retained token name for the existing UI adapter. */
  --border-color: #39423b;
  --success-color: #c8f66b;
  --danger-color: #ffada7;
  --warning-color: #f2cd8d;
  --stage-bg: #101411;
  --stage-text: #f5f6f3;
  --stage-secondary: #b0b7b1;
  --stage-line: #39423b;
  --motion-ease: cubic-bezier(.22, 1, .36, 1);
}
html { font-size: 100%; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--primary-bg); color: var(--text-primary); }
.non-captive {
  min-height: 100vh; background: var(--primary-bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem; line-height: 1.5; -webkit-font-smoothing: antialiased;
}
.non-captive *, .non-captive *::before, .non-captive *::after { box-sizing: border-box; }
.non-captive p { text-align: start; }
.non-captive button, .non-captive a, .non-captive summary { -webkit-tap-highlight-color: transparent; touch-action: manipulation; }
.non-captive button { font: inherit; cursor: pointer; }
.non-captive button:focus-visible, .non-captive a:focus-visible, .non-captive summary:focus-visible { outline: 3px solid var(--accent-blue); outline-offset: 5px; }
.modern-container {
  max-width: 1120px; margin-inline: auto; padding: 28px 24px 16px;
  padding: max(28px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
}
.site-header { container-type: inline-size; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-bottom: 46px; }
.wordmark { min-width: 0; display: flex; align-items: center; gap: 11px; font-size: 1.3rem; font-weight: 700; letter-spacing: -.035em; }
.wordmark > span { overflow-wrap: anywhere; }
.wordmark > i { flex-shrink: 0; color: var(--accent-blue); font-size: 1.5rem; }
.brand-pro { color: var(--text-secondary); font-weight: 450; }
.header-caption { color: var(--text-secondary); font-size: .875rem; }
.header-section { position: relative; margin-bottom: 28px; }
h1 { margin: 0; color: var(--text-primary); font-size: 2.125rem; font-size: clamp(2.125rem, 4.8vw, 3.4rem); font-weight: 700; letter-spacing: -.04em; line-height: 1.08; }
.mobile-break { display: none; }
.intro { color: var(--text-secondary); margin: 12px 0 0; font-size: 1.0625rem; letter-spacing: -.02em; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 64px; align-items: start; }
.speed-test-section, .info-ads-section { min-width: 0; display: flex; flex-direction: column; gap: 28px; }
.measurement-stage { background: var(--stage-bg); color: var(--stage-text); min-width: 0; container-type: inline-size; }
.test-controls { text-align: center; }
.test-dial { position: relative; width: 360px; max-width: 100%; height: 247.5px; margin: 0 auto; }
.dial-scale { display: block; width: 100%; height: 100%; overflow: hidden; }
.dial-ticks { stroke: #9ba59d; stroke-width: 5; stroke-dasharray: .85 3.25; transition: stroke .3s ease, opacity .3s ease; }
.dial-activity { stroke: var(--accent-blue); stroke-width: 5; stroke-linecap: round; stroke-dasharray: 28 330; stroke-dashoffset: 330; opacity: 0; transition: opacity .25s ease, stroke-dashoffset .45s var(--motion-ease); }
.dial-center { position: absolute; left: 15%; right: 15%; top: 22%; bottom: 0; display: grid; place-items: center; }
.dial-center > .go-button, .dial-live { grid-area: 1 / 1; }
.dial-live { display: flex; flex-direction: column; align-items: center; justify-content: flex-start; width: 100%; min-height: 9rem; opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(7px) scale(.94); transition: opacity .18s ease, transform .32s var(--motion-ease), visibility 0s linear .18s; }
.go-button { width: 9.5rem; height: 9.5rem; flex-shrink: 0; border: 1px solid #d3fc8b; border-radius: 50%; display: inline-flex; flex-direction: column; align-items: center; justify-content: center; gap: 9px; padding: 20px; background: var(--accent-blue); color: #10170a; font-size: 1.125rem !important; font-weight: 700 !important; line-height: 1.25; letter-spacing: -.025em; box-shadow: 0 0 0 6px var(--primary-bg); transition: background-color .15s ease, box-shadow .15s ease; }
.go-button > i { font-size: 1.3rem; }
.go-button { opacity: 1; visibility: visible; transform: scale(1); transition: opacity .18s ease, transform .32s var(--motion-ease), background-color .16s ease, box-shadow .16s ease, visibility 0s; }
.go-button:active { transform: scale(.96); background: #b3df56; box-shadow: 0 0 0 6px var(--primary-bg), inset 0 0 0 2px #10170a; }
.measurement-stage[data-state="running"] .go-button { opacity: 0; visibility: hidden; transform: scale(.88); pointer-events: none; transition: opacity .16s ease, transform .3s var(--motion-ease), visibility 0s linear .16s; }
.measurement-stage[data-state="running"] .dial-live { opacity: 1; visibility: visible; transform: none; pointer-events: auto; transition-delay: 0s; }
.measurement-stage[data-state="running"] .dial-ticks { stroke: #737f74; opacity: .7; }
.measurement-stage[data-state="running"] .dial-activity { opacity: 1; animation: dial-travel 2s linear infinite; }
.measurement-stage[data-phase="upload"] .dial-activity { animation-direction: reverse; }
.measurement-stage[data-state="complete"] .dial-ticks { stroke: var(--accent-blue); }
.measurement-stage[data-state="complete"] .dial-activity { stroke-dasharray: 330 330; stroke-dashoffset: 0; opacity: .3; }
#cancel-test { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-width: 120px; min-height: 44px; padding: 9px 16px; margin-top: 8px; border: 1px solid #778579; border-radius: 30px; background: var(--card-bg); color: var(--text-primary); font-size: .875rem; font-weight: 600; line-height: 1.4; }
#cancel-test i { font-size: .7rem; }
#cancel-test { transition: transform .2s var(--motion-ease), background-color .15s ease, border-color .15s ease; }
#cancel-test:active { background: #303b31; transform: scale(.96); }
.stage-heading { line-height: 1.3; margin-top: 5px; }
#test-phase { color: var(--stage-secondary); font-size: .8125rem; }
.readout-measurement { display: grid; place-items: center; width: 100%; min-height: 4.125rem; }
.readout-measurement > * { grid-area: 1 / 1; }
.connection-indicator { color: var(--accent-blue); font-size: 2rem; opacity: 1; transition: opacity .18s ease; }
.measurement-stage[data-state="running"][data-sampling="false"] .connection-indicator { animation: connection-turn 1.2s linear infinite; }
.speed-display { font-variant-numeric: tabular-nums; line-height: 1.15; opacity: 0; transform: translateY(5px); transition: opacity .2s ease, transform .28s var(--motion-ease); }
.measurement-stage[data-sampling="true"] .speed-display { opacity: 1; transform: none; }
.measurement-stage[data-sampling="true"] .connection-indicator { opacity: 0; }
.live-value { font-size: 2.65rem; font-weight: 650; letter-spacing: -.045em; overflow-wrap: anywhere; }
#speed-decimal { color: var(--stage-secondary); }
.speed-unit, .live-caption { color: var(--stage-secondary); font-size: .8125rem; }
.status-copy { min-height: 1.5em; margin: 10px 0 0; font-size: .875rem; line-height: 1.5; color: var(--stage-text); text-align: center !important; }
.measurement-note { margin: 4px 0 0; font-size: .8125rem; color: var(--stage-secondary); text-align: center !important; }
.measurement-stage[data-state="complete"] .status-copy { color: var(--accent-blue); }
.measurement-stage[data-state="incomplete"] .status-copy { color: var(--warning-color); }
.test-progress-section { margin: 28px 0; }
.progress-phases { position: relative; display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); align-items: start; }
.phase-item { min-width: 0; text-align: center; }
.phase-icon { display: grid; place-items: center; height: 17px; width: 17px; margin: 0 auto 8px; border: 2px solid #8d988f; border-radius: 50%; font-size: 9px; }
.phase-icon i { visibility: hidden; }
.phase-icon { transition: background-color .22s ease, border-color .22s ease; }
.phase-label { font-size: .875rem; color: var(--stage-text); overflow-wrap: anywhere; }
.phase-status { font-size: .75rem; margin-top: 2px; color: var(--stage-secondary); overflow-wrap: anywhere; }
.phase-connector { position: absolute; top: 7px; left: calc(16.6667% + 9px); width: calc(33.3333% - 18px); height: 1px; background: #778579; }
.phase-connector:nth-child(4) { left: calc(50% + 9px); }
.phase-item.running .phase-icon { border-color: var(--accent-blue); background: var(--accent-blue); box-shadow: inset 0 0 0 3px var(--primary-bg); animation: phase-breathe 1.5s ease-in-out infinite; }
.phase-item.running .phase-status { color: var(--accent-blue); }
.phase-item.completed .phase-icon { border-color: var(--accent-blue); background: var(--accent-blue); color: #10170a; }
.phase-item.completed .phase-icon i { visibility: visible; animation: check-settle .24s var(--motion-ease); }
.phase-item.unavailable .phase-icon, .phase-item.cancelled .phase-icon { border-color: var(--warning-color); border-radius: 4px; }
.phase-item.unavailable .phase-status, .phase-item.cancelled .phase-status { color: var(--warning-color); }
.phase-connector.completed { background: var(--accent-blue); }
.phase-connector { transition: background-color .3s ease; }
.results-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); grid-template-columns: repeat(auto-fit, minmax(min(100%, 5rem), 1fr)); padding: 22px 0; border-block: 1px solid var(--stage-line); row-gap: 24px; }
.result-card { min-width: 0; text-align: center; padding: 0 10px; }
.result-card + .result-card { border-left: 1px solid var(--stage-line); }
.result-icon { font-size: 1rem; color: var(--stage-text); margin-bottom: 8px; }
.result-label { display: inline; color: var(--stage-text); font-size: .875rem; font-weight: 450; margin-left: 5px; }
.result-value { margin-top: 8px; font-size: 2.35rem; font-size: clamp(1.5rem, 3.4vw, 2.35rem); font-weight: 500; line-height: 1.25; letter-spacing: -.04em; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.result-value .unit { display: inline-block; margin-left: 5px; color: var(--stage-secondary); font-size: .875rem; line-height: 1.5; font-weight: 400; letter-spacing: 0; }
.result-card .result-icon, .result-card .result-label, .result-card .result-value { transition: color .22s ease; }
.result-card[data-state="running"] .result-icon, .result-card[data-state="running"] .result-label { color: var(--accent-blue); }
.result-card[data-state="complete"] .result-value { animation: result-settle .35s var(--motion-ease); }
.result-card[data-state="unavailable"] .result-value { color: var(--warning-color); }
h2 { font-size: 1.375rem; font-weight: 700; letter-spacing: -.035em; line-height: 1.3; margin: 0 0 6px; color: var(--text-primary); }
.info-panel { padding-top: 16px; container-type: inline-size; }
.connection-intro { font-size: .875rem; color: var(--text-secondary); margin: 0 0 12px; }
.connection-list { margin: 0; }
.connection-status { margin: 14px 0 4px; color: var(--text-secondary); font-size: .8125rem; line-height: 1.5; }
.refresh-connection { display: flex; gap: 8px; align-items: center; min-height: 44px; padding: 8px 0; border: 0; background: transparent; color: var(--accent-blue); font: inherit; font-size: .875rem; cursor: pointer; }
.info-item { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.2fr); gap: 12px; align-items: baseline; padding: 17px 0; border-bottom: 1px solid var(--border-color); }
.info-label { color: var(--text-secondary); font-size: .875rem; font-weight: 400; margin: 0; display: flex; align-items: baseline; gap: 10px; }
.info-label i { width: 1.25em; flex-shrink: 0; text-align: center; font-size: 1rem; }
.info-value { color: var(--text-primary); font-size: .875rem; margin: 0; text-align: right; overflow-wrap: anywhere; word-break: normal; }
.info-value i { display: none; }
.connection-list[data-state="loading"] .info-value { animation: phase-breathe 1.5s ease-in-out infinite; }
.connection-list[data-state="ready"] .info-value { animation: result-settle .3s var(--motion-ease); }
.ip-check-btn { color: var(--accent-blue); display: inline-flex; align-items: center; gap: 9px; min-height: 48px; padding: 10px 0 0; font-weight: 550; font-size: .875rem; text-decoration: none; }
.external-icon { font-size: .7em; }
.ads-container { min-width: 0; padding-top: 10px; }
.apps-heading { margin-bottom: 12px; }
.eyebrow { display: block; color: var(--text-secondary); font-size: .6875rem; font-weight: 550; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 6px; }
.apps-heading h2 { font-size: 1.125rem; }
#app-inhouse-ads { padding: 0 !important; text-align: start; }
#app-inhouse-ads a { display: inline-flex; max-width: 100%; min-height: 48px; align-items: center; border-radius: 8px; overflow: hidden; }
#app-inhouse-ads img { display: block; max-width: 100%; height: auto; object-fit: contain; }
.quality-section { padding: 0 0 22px; border-bottom: 1px solid var(--border-color); }
.quality-section h2 { font-size: 1.0625rem; }
.quality-section:not(.hidden) { animation: result-settle .35s var(--motion-ease); }
.quality-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 18px; }
.quality-item { min-width: 0; display: flex; gap: 10px; align-items: flex-start; }
.quality-icon { color: var(--text-secondary); margin-top: 4px; }
.quality-info { display: flex; flex-direction: column; gap: 3px; min-width: 0; overflow-wrap: anywhere; }
.quality-label { color: var(--text-secondary); font-size: .8125rem; }
.quality-status { font-size: .9375rem; font-weight: 650; }
.section-note { color: var(--text-secondary); font-size: .8125rem; line-height: 1.5; margin: 16px 0 0; }
.test-details { border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); margin-top: 32px; }
.test-details summary { cursor: pointer; list-style: none; min-height: 56px; padding: 16px 0; display: flex; align-items: center; justify-content: space-between; gap: 20px; font-weight: 550; font-size: .9375rem; }
.test-details summary::-webkit-details-marker { display: none; }
.test-details summary i { font-size: .75rem; color: var(--text-secondary); transition: transform .22s var(--motion-ease); }
.test-details[open] summary i { transform: rotate(180deg); }
.test-details[open] .details-content { animation: result-settle .25s var(--motion-ease); }
.details-content { padding: 0 0 22px; max-width: 700px; }
.details-content > p { font-size: .9375rem; color: var(--text-secondary); margin: 0 0 18px; }
.latency-details { margin: 0; }
.latency-details > div { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 10px 0; border-top: 1px solid var(--border-color); }
.latency-details dt { font-weight: 400; font-size: .9375rem; }
.latency-details dd { margin: 0; white-space: nowrap; font-variant-numeric: tabular-nums; }
.details-content .section-note { font-size: .8125rem; margin: 12px 0 0; }
.site-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 4px 20px; color: var(--text-secondary); font-size: .8125rem; padding: 18px 0 0; }
.site-footer nav { display: flex; gap: 18px; }
.site-footer a { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; min-height: 44px; color: var(--text-secondary); }
.server-info { position: absolute; top: 0; right: 0; padding: 12px; display: flex; gap: 12px; align-items: center; background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 12px; overflow-wrap: anywhere; z-index: 5; max-width: 100%; }
.close-btn { background: transparent; color: inherit; border: 0; min-height: 44px; min-width: 44px; }
.noscript-message { padding: 20px; color: var(--danger-color); }
.hidden { display: none !important; }
.cursor-trail { display: none; }
@media (hover: hover) {
  .go-button:hover { background: #d7ff8b; transform: scale(1.035); }
  .go-button:active { transform: scale(.96); }
  #cancel-test:hover { background: #303b31; }
  .ip-check-btn:hover, .site-footer a:hover { color: var(--accent-blue); text-decoration: underline; }
}
@media (max-width: 759px) {
  .modern-container { max-width: 520px; padding: 20px 22px 12px; padding: max(20px, env(safe-area-inset-top)) max(22px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(22px, env(safe-area-inset-left)); }
  .site-header { padding-bottom: 14px; }
  .wordmark { font-size: 1.125rem; }
  .wordmark > i { font-size: 1.35rem; }
  .header-caption { display: none; }
  .header-section { margin-bottom: 12px; }
  h1 { font-size: 2.25rem; line-height: 1.05; }
  .mobile-break { display: initial; }
  .content-grid { grid-template-columns: minmax(0,1fr); gap: 22px; }
  .intro { font-size: 1rem; margin-top: 8px; line-height: 1.35; }
  .test-dial { width: 280px; height: 192.5px; }
  .go-button { width: 8.25rem; height: 8.25rem; }
  .test-progress-section { margin: 22px 0; }
  .results-grid { padding: 18px 0; }
  .result-card { padding: 0 5px; }
  .result-label { font-size: .8125rem; }
  .result-icon { font-size: .875rem; margin-bottom: 0; }
  .result-value { margin-top: 12px; font-size: 1.5rem; font-size: clamp(1.5rem, 6vw, 1.875rem); }
  .result-value .unit { font-size: .875rem; margin-left: 4px; }
  .info-panel { padding-top: 0; }
  .info-item { padding: 14px 0; }
  .info-label { gap: 9px; font-size: .875rem; }
  .info-value { font-size: .875rem; }
  .quality-item { display: block; }
  .quality-icon { margin: 0 0 8px; }
}
@media (max-width: 359px) {
  .modern-container { padding-left: 16px; padding-right: 16px; padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
  h1 { font-size: 1.9375rem; }
  .result-icon { display: block; margin-bottom: 5px; }
  .result-label { margin-left: 0; }
  .result-value .unit { display: block; margin: 4px 0 0; }
  .quality-grid { grid-template-columns: minmax(0,1fr); }
  .quality-item { display: flex; }
}
/* Large browser text reflows into rows; the fixed decorative dial is optional. */
@container (max-width: 18rem) {
  .wordmark { font-size: 1.125rem; gap: 8px; }
  .wordmark > i { font-size: 1.4rem; }
}
@container (max-width: 17rem) {
  .test-dial { height: auto; width: 100%; }
  .dial-scale { display: none; }
  .dial-center { position: static; }
  .dial-live { min-height: 10rem; }
  .measurement-stage:not([data-state="running"]) .dial-live { min-height: 0; height: 0; overflow: hidden; }
  .go-button { width: 100%; height: auto; min-height: 56px; border-radius: 30px; flex-direction: row; }
  .live-value { font-size: 2rem; }
  .progress-phases { display: flex; flex-direction: column; gap: 14px; }
  .phase-item { display: grid; grid-template-columns: 18px minmax(0,1fr) auto; gap: 10px; text-align: start; align-items: center; width: 100%; }
  .phase-icon { margin: 0; }
  .phase-status { margin: 0; }
  .phase-connector { display: none; }
  .info-item { grid-template-columns: minmax(0,1fr); gap: 8px; }
  .info-value { text-align: left; }
  .result-card + .result-card { border-left: 0; }
}
/* Activity indicates a pending operation, never a fabricated percentage or speed. */
@keyframes dial-travel { from { stroke-dashoffset: 330; } to { stroke-dashoffset: -28; } }
@keyframes connection-turn { to { transform: rotate(360deg); } }
@keyframes phase-breathe { 0%, 100% { opacity: 1; } 50% { opacity: .55; } }
@keyframes check-settle { from { opacity: 0; transform: scale(.6); } to { opacity: 1; transform: scale(1); } }
@keyframes result-settle { from { opacity: .8; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) {
  .non-captive *, .non-captive *::before, .non-captive *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
  .go-button, #cancel-test { border: 1px solid ButtonText; }
  .dial-ticks { stroke: GrayText; }
}

/* iOS WebKit before 14.1 (iOS 14.4 and older) has no flex gap, margin-inline or
   border-block. `inset` arrived in the same release and -webkit-touch-callout exists
   only on iOS, so current browsers never apply this block. Icons sit next to bare
   text, so they carry the space themselves. Container queries do not apply there.
   clamp() sizes have a plain font-size declared just before them for Safari < 13.1. */
@supports (-webkit-touch-callout: none) and (not (inset: 0)) {
  .modern-container { margin-left: auto; margin-right: auto; }
  .results-grid { border-top: 1px solid var(--stage-line); border-bottom: 1px solid var(--stage-line); }
  .site-header > * + * { margin-left: 24px; }
  .wordmark > * + * { margin-left: 11px; }
  .info-label > i { margin-right: 10px; }
  .refresh-connection > i { margin-right: 8px; }
  #cancel-test > i, .ip-check-btn > i:first-child { margin-right: 9px; }
  .ip-check-btn > .external-icon { margin-left: 9px; }
  .test-details summary > * + * { margin-left: 20px; }
  .latency-details > div > * + * { margin-left: 16px; }
  .site-footer nav > * + * { margin-left: 18px; }
  .server-info > * + * { margin-left: 12px; }
  .site-footer > * { margin-top: 2px; margin-bottom: 2px; }
  .site-footer > :first-child { margin-right: 20px; } /* a wrapped line starts flush */
  .speed-test-section > * + *, .info-ads-section > * + * { margin-top: 28px; }
  .go-button > * + * { margin-top: 9px; }
  .quality-info > * + * { margin-top: 3px; }
}
@supports (-webkit-touch-callout: none) and (not (inset: 0)) {
  @media (min-width: 760px), (max-width: 359px) {
    .quality-item > * + * { margin-left: 10px; }
  }
}