/* Internet Speed Test — Fast.com / Ookla-inspired UI */

.ist-widget {
  --ist-bg: #0b1220;
  --ist-panel: #111827;
  --ist-ink: #f8fafc;
  --ist-muted: #94a3b8;
  --ist-accent: #22d3ee;
  --ist-accent-2: #38bdf8;
  --ist-ok: #34d399;
  --ist-line: rgba(148, 163, 184, 0.22);
  color: var(--ist-ink);
  background:
    radial-gradient(900px 420px at 50% -10%, rgba(34, 211, 238, 0.16), transparent 55%),
    radial-gradient(700px 300px at 100% 100%, rgba(56, 189, 248, 0.1), transparent 45%),
    var(--ist-bg);
  border: 1px solid var(--ist-line);
  border-radius: 16px;
  padding: 1.5rem 1.25rem 1.35rem;
  overflow: hidden;
}

.ist-stage { text-align: center; }
.ist-kicker {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  color: var(--ist-muted);
  font-weight: 400;
  letter-spacing: 0.01em;
}

.ist-gauge-wrap {
  position: relative;
  width: min(260px, 70vw);
  margin: 0 auto 1rem;
  aspect-ratio: 1;
}
.ist-gauge { width: 100%; height: 100%; transform: rotate(-90deg); }
.ist-gauge-track {
  fill: none;
  stroke: rgba(148, 163, 184, 0.18);
  stroke-width: 10;
}
.ist-gauge-arc {
  fill: none;
  stroke: url(#none);
  stroke: var(--ist-accent);
  stroke-width: 10;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.35s ease;
  filter: drop-shadow(0 0 8px rgba(34, 211, 238, 0.35));
}
.ist-stage[data-stage="download"] .ist-gauge-arc { stroke: var(--ist-accent); }
.ist-stage[data-stage="upload"] .ist-gauge-arc { stroke: #60a5fa; }
.ist-stage[data-stage="done"] .ist-gauge-arc { stroke: var(--ist-ok); }

.ist-gauge-core {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.ist-primary-num {
  display: block;
  font-size: clamp(2.6rem, 8vw, 3.6rem);
  font-weight: 700;
  line-height: 1;
  font-family: var(--font-display, Poppins, sans-serif);
  letter-spacing: -0.03em;
}
.ist-primary-unit {
  display: block;
  margin-top: 0.15rem;
  font-size: 0.95rem;
  color: var(--ist-muted);
  font-weight: 500;
}
.ist-primary-label {
  margin-top: 0.35rem;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ist-muted);
}

.ist-actions {
  display: flex;
  gap: 0.65rem;
  justify-content: center;
  align-items: center;
  margin: 0.25rem 0 0.75rem;
}
.ist-go,
.ist-again {
  min-width: 5.5rem;
  min-height: 5.5rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(145deg, #22d3ee, #0ea5e9);
  color: #06202a;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.35);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.ist-go:hover,
.ist-again:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 14px 34px rgba(14, 165, 233, 0.45);
}
.ist-go:focus-visible,
.ist-again:focus-visible,
.ist-stop:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}
.ist-stop {
  border-radius: 999px;
  border: 1px solid var(--ist-line);
  background: transparent;
  color: var(--ist-ink);
  padding: 0.65rem 1.1rem;
  font-weight: 600;
  cursor: pointer;
}
.ist-stop:hover { border-color: #f87171; color: #fecaca; }

.ist-status {
  margin: 0;
  min-height: 1.4em;
  font-size: 0.9rem;
  color: var(--ist-muted);
}

.ist-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
  margin-top: 1.25rem;
}
.ist-metric {
  background: rgba(17, 24, 39, 0.75);
  border: 1px solid var(--ist-line);
  border-radius: 12px;
  padding: 0.75rem 0.85rem;
  text-align: center;
}
.ist-metric-label {
  display: block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ist-muted);
  margin-bottom: 0.25rem;
}
.ist-metric-value {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: var(--font-display, Poppins, sans-serif);
}
.ist-metric-value small {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ist-muted);
}

.ist-result {
  margin-top: 1.15rem;
  padding: 0.95rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--ist-line);
  background: rgba(15, 23, 42, 0.65);
}
.ist-result-head {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: baseline;
  margin-bottom: 0.35rem;
}
.ist-result-head h3 {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ist-ink);
}
.ist-result-id {
  font-family: ui-monospace, monospace;
  font-size: 0.75rem;
  color: var(--ist-accent);
}
.ist-result-meta {
  margin: 0 0 0.65rem;
  font-size: 0.8rem;
  color: var(--ist-muted);
}
.ist-result-list {
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.82rem;
  color: var(--ist-muted);
}
.ist-result-list li {
  padding: 0.4rem 0;
  border-top: 1px solid var(--ist-line);
}
.ist-result-list code {
  color: var(--ist-accent-2);
  font-size: 0.75rem;
}

.ist-footnote {
  margin: 1rem 0 0;
  font-size: 0.75rem;
  line-height: 1.45;
  color: var(--ist-muted);
  text-align: center;
}
.ist-footnote a { color: var(--ist-accent-2); }

@media (max-width: 800px) {
  .ist-metrics { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .ist-metrics { grid-template-columns: 1fr 1fr; }
  .ist-go, .ist-again { min-width: 4.75rem; min-height: 4.75rem; font-size: 1rem; }
}

/* Full-width calculator chrome for speed test page */
.calculator-detail--speed-test .calc-detail-grid--full { grid-template-columns: 1fr; }
.calculator-detail--speed-test .calc-tool-panel--full {
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
}
.calculator-detail--speed-test .container--full {
  width: min(100% - 2rem, 920px);
  max-width: none;
}