:root {
  --bg: #f6f8ff;
  --text: #0b1220;
  --muted: rgba(11, 18, 32, 0.64);
  --card: rgba(255, 255, 255, 0.72);
  --card-border: rgba(19, 32, 52, 0.12);
  --shadow: 0 18px 50px rgba(10, 18, 35, 0.12);
  --accent: #4967ee;
  --accent2: #2899f6;
  --danger: #d9534f;
  --ok: #0b8f5a;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: radial-gradient(1200px 700px at 10% 0%, rgba(73, 103, 238, 0.16), transparent 55%),
  radial-gradient(900px 520px at 90% 10%, rgba(40, 153, 246, 0.14), transparent 58%),
  linear-gradient(180deg, #ffffff, var(--bg));
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.35;
}

.page {
  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: 26px 18px 34px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand__logo {
  display: block;
  width: 144px;
  height: 33px;
  object-fit: contain;
}

.brand__title {
  margin: 0;
  font-weight: 720;
  letter-spacing: -0.02em;
  font-size: 20px;
}

.brand__subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 650;
  letter-spacing: -0.01em;
  display: inline-flex;
  gap: 10px;
  align-items: center;
  white-space: nowrap;
  transition: transform 160ms ease, box-shadow 160ms ease, filter 160ms ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #ffffff;
  box-shadow: 0 10px 26px rgba(73, 103, 238, 0.25);
}

.btn--primary:hover {
  filter: brightness(1.02);
  box-shadow: 0 14px 34px rgba(73, 103, 238, 0.32);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.6);
  color: var(--text);
  border: 1px solid var(--card-border);
}

.btn--ghost:hover {
  box-shadow: 0 10px 26px rgba(10, 18, 35, 0.12);
}

.btn[disabled] {
  cursor: not-allowed;
  opacity: 0.7;
  filter: saturate(0.75);
}

.btn__spinner {
  width: 14px;
  height: 14px;
  border-radius: 999px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: rgba(255, 255, 255, 0.95);
  display: none;
  animation: spin 900ms linear infinite;
}

.btn.is-loading .btn__spinner {
  display: inline-block;
}

.btn.is-loading .btn__label {
  opacity: 0.95;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.select {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: rgba(255, 255, 255, 0.6);
}

.select__label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.select__control {
  border: 0;
  background: transparent;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--text);
  outline: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transform: translateY(0);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.card:hover {
  transform: translateY(-2px);
  border-color: rgba(73, 103, 238, 0.22);
  box-shadow: 0 24px 62px rgba(10, 18, 35, 0.16);
}

.card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 14px 0;
}

.card__top .btn {
  flex-shrink: 0;
}

.card__name {
  margin: 0;
  font-weight: 760;
  letter-spacing: -0.02em;
  font-size: 14px;
}

.card__host {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.card__body {
  padding: 8px 14px 16px;
}

.gauge {
  position: relative;
  width: 100%;
  padding-top: 66%;
  margin: 6px 0 10px;
}

.gauge svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.gauge svg [data-role="gauge-bg"] {
  stroke: rgba(11, 18, 32, 0.12);
}

.gauge__content {
  position: absolute;
  left: 0;
  right: 0;
  top: 82%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  transform: translateY(-50%);
  text-align: center;
  pointer-events: none;
}

.speed {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-weight: 820;
  letter-spacing: -0.03em;
}

.speed__value {
  font-size: clamp(20px, 2.4vw, 26px);
}

.speed__unit {
  font-size: 12px;
  color: var(--muted);
  font-weight: 720;
}

.status {
  margin-top: 0;
  font-size: 12px;
  color: var(--muted);
  font-weight: 650;
}

.status--ok {
  color: rgba(11, 143, 90, 0.95);
}

.status--err {
  color: rgba(217, 83, 79, 0.95);
}

.stats {
  display: grid;
  gap: 10px;
  padding-top: 8px;
}

.stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.stat__k {
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
}

.stat__v {
  font-size: 12px;
  font-weight: 720;
  letter-spacing: -0.01em;
}

.footer {
  margin-top: 16px;
}

.footer__note {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.hidden {
  display: none !important;
}

@media (max-width: 680px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .select {
    display: inline-flex;
  }

  #startAllBtn {
    display: none;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1f2433;
    --text: rgba(255, 255, 255, 0.92);
    --muted: rgba(255, 255, 255, 0.72);
    --card: #222838;
    --card-border: rgba(124, 146, 247, 0.18);
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  }

  body {
    background: var(--bg);
  }

  .card:hover {
    border-color: rgba(124, 146, 247, 0.32);
    box-shadow: 0 24px 62px rgba(0, 0, 0, 0.55);
  }

  .btn--ghost {
    color: #7c92f7;
    border-color: #7c92f7;
    background: transparent;
  }

  .btn--ghost:hover {
    box-shadow: none;
    background: rgba(124, 146, 247, 0.12);
  }

  .select {
    background: rgba(34, 40, 56, 0.78);
    border-color: rgba(124, 146, 247, 0.18);
  }

  .select__control {
    color: rgba(255, 255, 255, 0.92);
  }

  .gauge svg [data-role="gauge-bg"] {
    stroke: rgba(255, 255, 255, 0.14);
  }
}