:root {
  --bg: #eceae6;
  --card: #f5f3ef;
  --border: #e3ddd0;
  --text: #26221c;
  --text-soft: #8a8375;
  --green: #2f9e5b;
  --blue: #3b6fd9;
  --orange: #e08a2c;
  --red: #d94f3d;
  --purple: #8b5cf6;
  --track-gray: #d8d3c6;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  max-width: 420px;
  margin: 0 auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ---------- Top bar ---------- */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 4px;
}

.brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--green);
}
.brand span { color: var(--text); }

.status {
  font-weight: 700;
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.status::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.status.offline { background: #f3e2de; color: var(--red); }
.status.live { background: #dcf1e3; color: var(--green); }
.status.error { background: #f3e2de; color: var(--red); }

/* ---------- Cards ---------- */

.card {
  background: var(--card);
  border-radius: 20px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(40, 35, 20, 0.05);
}

.field-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-soft);
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

.field-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
}
.field-row .field-label { margin-bottom: 0; }

.bubble {
  background: #e7e2d4;
  color: var(--text);
  font-weight: 800;
  font-size: 14px;
  padding: 5px 14px;
  border-radius: 999px;
}

.big-select {
  width: 100%;
  padding: 16px 16px;
  border-radius: 14px;
  border: none;
  background: #fdfcfa;
  color: var(--text);
  font-size: 17px;
  font-weight: 700;
  box-shadow: 0 1px 2px rgba(40,35,20,0.06);
  appearance: none;
  -webkit-appearance: none;
}

/* ---------- Gradient range slider ---------- */

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--green), var(--track-gray) 45%, var(--track-gray) 55%, var(--red));
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: #ffffff;
  border: 4px solid var(--text);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

input[type="range"]::-moz-range-thumb {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: #ffffff;
  border: 4px solid var(--text);
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
}

.range-ends {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-soft);
  margin-top: 6px;
}

/* ---------- Ring header ---------- */

.ring-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-soft);
  letter-spacing: 0.3px;
  margin-bottom: 16px;
}

#lastDigitReadout { color: var(--text); }

/* ---------- Digit rings ---------- */

.digit-rings {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px 6px;
}

.digit-cell {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  padding-top: 8px;
}

.digit-num {
  font-size: 12px;
  color: var(--text-soft);
  font-weight: 700;
  margin-bottom: 2px;
}

.ring-wrap {
  position: relative;
  width: 64px;
  height: 64px;
}

.ring-wrap svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ring-bg {
  fill: none;
  stroke: #e2ddd0;
  stroke-width: 8;
}

.ring-fg {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
  transition: stroke-dasharray 0.3s ease, stroke 0.3s ease;
}

.ring-fg.rank-highest { stroke: var(--green); }
.ring-fg.rank-2nd-highest { stroke: var(--blue); }
.ring-fg.rank-2nd-lowest { stroke: var(--orange); }
.ring-fg.rank-lowest { stroke: var(--red); }
.ring-fg.rank-mid { stroke: #cfc8b8; }

.ring-value {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 800;
  color: var(--text);
}

.last-tick-pointer {
  width: 0; height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-bottom: 10px solid var(--purple);
  margin-top: 6px;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.last-tick-pointer.active {
  opacity: 1;
  animation: pulse-pointer 0.6s ease;
}

@keyframes pulse-pointer {
  0% { transform: translateY(-4px); opacity: 0.3; }
  100% { transform: translateY(0); opacity: 1; }
}

@media (max-width: 360px) {
  .ring-wrap { width: 56px; height: 56px; }
  .ring-value { font-size: 12px; }
}