/* 顶部导航 */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding: 8px 0 4px;
  border-bottom: 1px solid #1f2937;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-circle {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: radial-gradient(circle at 30% 20%, #38bdf8, #1d4ed8);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #e5e7eb;
}

.nav-title {
  font-size: 16px;
  font-weight: 600;
  color: #f9fafb;
}

.nav-subtitle {
  font-size: 11px;
  color: #9ca3af;
}

.nav-right {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: #9ca3af;
  align-items: center;
  flex-wrap: wrap;
}

.nav-link {
  cursor: pointer;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.nav-link.active {
  color: #e5e7eb;
  border-color: #3b82f6;
}
.nav-link.disabled {
  opacity: 0.5;
  cursor: default;
}
.nav-link:hover {
  color: inherit;
}

.nav-clock {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11px;
  color: #9ca3af;
}

.nav-clock-stack {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
}

.nav-clock-time {
  color: #e5e7eb;
  font-weight: 500;
}

.nav-clock-countdown {
  color: #a3b3c6;
}

.nav-clock-rate {
  color: #cbd5f5;
}

@media (max-width: 720px) {
  .nav-clock {
    width: 100%;
    justify-content: space-between;
  }
  .nav-clock-stack {
    align-items: flex-start;
  }
}