* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Meiryo UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  background: #111;
  color: #eee;
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  -webkit-user-select: none;
  user-select: none;
}

#app {
  text-align: center;
  width: 100%;
  padding: 1rem;
}

/* 風向矢印 */
#arrow-container {
  margin-bottom: 1rem;
}

#arrow {
  width: 28vw;
  height: 28vw;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 風速 */
#speed {
  font-size: 22vw;
  font-weight: bold;
  line-height: 1;
  letter-spacing: -0.02em;
}

#unit {
  font-size: 5vw;
  color: #888;
  margin-top: 0.3rem;
}

/* 風向ラベル */
#direction-label {
  font-size: 7vw;
  color: #aaa;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}


@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.25; }
}

#arrow.loading polygon {
  fill: #444;
}

#arrow.loading {
  animation: pulse 2s ease-in-out infinite;
  will-change: opacity;
}

#error {
  font-size: 4vw;
  color: #e57373;
  padding: 1rem;
  line-height: 1.6;
}

.hidden {
  display: none !important;
}

#wakelock {
  position: fixed;
  bottom: 8px;
  left: 8px;
  font-size: 10px;
  font-family: inherit;
  background: none;
  border: none;
  color: #333;
  cursor: pointer;
  padding: 0;
  line-height: 1;
}

#wakelock.active {
  color: #555;
}

#version {
  position: fixed;
  bottom: 8px;
  right: 8px;
  font-size: 10px;
  color: #333;
}