:root {
  --navy: #102a56;
  --blue: #174ea6;
  --yellow: #f5c542;
  --background: #f3f6fb;
  --text: #182536;
  --muted: #66758a;
  --border: #e1e8f0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
}

.topbar {
  color: white;
  background: linear-gradient(120deg, #102a56, #173e78);
  border-bottom: 4px solid var(--yellow);
}

.eyebrow {
  color: #8a9db8;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  margin-bottom: 0.5rem;
}

.topbar .eyebrow {
  color: #f5d875;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  padding: 5px;
  border-radius: 14px;
  background: white;
  color: var(--navy);
  font-size: 1.25rem;
  font-weight: 900;
}

.brand-mark img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.welcome h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
}

.panel {
  padding: 24px;
  background: white;
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: 0 5px 22px rgb(16 42 86 / 5%);
}

.section-title {
  font-size: 1.1rem;
  font-weight: 800;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 7px;
  color: #13814b;
  font-size: 0.7rem;
  font-weight: 800;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #20b26b;
}

.distance-display {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 25px;
  color: var(--navy);
}

.distance-display #distanceValue {
  font-size: clamp(3rem, 7vw, 4.8rem);
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.distance-unit {
  font-size: 1.2rem;
  color: var(--muted);
}

.distance-progress {
  height: 9px;
  border-radius: 20px;
  background: #eaf0f7;
}

.distance-progress .progress-bar {
  background: var(--blue);
  transition: width 0.25s ease;
}

.motor-status {
  display: flex;
  align-items: center;
  gap: 17px;
}

.motor-icon {
  display: grid;
  place-items: center;
  width: 68px;
  height: 68px;
  border-radius: 18px;
  background: #eef3fb;
  color: var(--navy);
  font-size: 2rem;
  font-weight: 800;
}

.motor-icon.running {
  background: #e5f7ec;
  color: #16834a;
}

.motor-icon.stopped {
  background: #fff0ed;
  color: #bd3d2b;
}

#motorState {
  font-weight: 800;
  letter-spacing: 0.02em;
}

.status-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.status-item {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 15px;
  background: #f7f9fc;
  border-radius: 12px;
}

.status-item strong {
  font-size: 0.88rem;
}

.mode-selector {
  display: flex;
  gap: 10px;
  padding: 5px;
  background: #f0f3f8;
  border-radius: 13px;
}

.mode-btn {
  flex: 1;
  padding: 12px;
  border: 0;
  border-radius: 10px;
  font-weight: 700;
  color: var(--muted);
}

.mode-btn.active {
  background: var(--navy);
  color: white;
  box-shadow: 0 3px 9px rgb(16 42 86 / 18%);
}

.help-text {
  padding: 12px 14px;
  border-left: 3px solid var(--yellow);
  border-radius: 5px;
  background: #fffbeb;
  font-size: 0.9rem;
  color: #5e4a12;
}

.control-btn {
  min-height: 60px;
  padding: 12px;
  background: var(--navy);
  border: 1px solid var(--navy);
  border-radius: 12px;
  color: white;
  font-weight: 700;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.control-btn:not(:disabled):hover {
  background: var(--blue);
  color: white;
  transform: translateY(-2px);
}

.control-btn:disabled {
  opacity: 0.4;
}

.control-btn.stop-btn {
  background: #b83232;
  border-color: #b83232;
}

.control-arrow {
  margin-right: 7px;
  font-size: 1.2rem;
}

.action-message {
  min-height: 22px;
  color: var(--muted);
  font-size: 0.9rem;
}

.action-message.error {
  color: #b42318;
}

.member-card {
  padding: 12px;
  text-align: center;
  background: #f7f9fc;
  border: 1px solid var(--border);
  border-radius: 13px;
}

.member-photo {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  overflow: hidden;
  background: #e7edf6;
  border-radius: 10px;
  color: var(--muted);
  font-size: 0.9rem;
}

.member-name {
  margin: 12px 0 0;
  font-weight: 700;
  font-size: 0.9rem;
}

@media (max-width: 576px) {
  .panel {
    padding: 18px;
  }

  .status-grid {
    grid-template-columns: 1fr;
  }

  .brand-mark {
    width: 50px;
    height: 50px;
  }
}