:root {
  --hk-modular: "HK Grotesk", sans-serif;
  --arvo: "Arvo", serif;
}

body {
  font-family: var(--arvo);
  background-color: #f8f8f8;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 20px;
}

.tracker-container {
  background: white;
  padding: 40px;
  border-radius: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  max-width: 700px;
  width: 100%;
  text-align: center;
}

h1 {
  font-family: var(--hk-modular);
  font-size: 58.4px;
  font-weight: 700;
  margin: 0 0 30px 0;
  color: #222;
  letter-spacing: -0.5px;
  line-height: 1.1;
  display: flex;
  flex-direction: column;
}

.stats {
  margin-bottom: 40px;
}

.distance,
.comparison {
  font-family: var(--arvo);
  font-size: 32.8px;
  line-height: 1.4;
  color: #444;
  margin: 10px 0;
}

.distance span,
.comparison span {
  font-weight: bold;
  color: #222;
}

.controls {
  display: flex;
  gap: 15px;
  justify-content: center;
  margin-top: 30px;
}

button {
  font-family: var(--arvo);
  font-size: 23px;
  padding: 12px 24px;
  background: #f0f0f0;
  color: #333;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

button:hover {
  background: #e0e0e0;
  transform: translateY(-2px);
}

#color-palette {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 20px;
}

.color-option {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.2s;
}

.color-option:hover {
  transform: scale(1.1);
}

.color-option[data-palette="fire"] {
  background: linear-gradient(45deg, #ff0000, #ff9500);
}
.color-option[data-palette="ocean"] {
  background: linear-gradient(45deg, #00a8ff, #0095ff);
}
.color-option[data-palette="forest"] {
  background: linear-gradient(45deg, #00b894, #55efc4);
}
.color-option[data-palette="rainbow"] {
  background: linear-gradient(
    45deg,
    red,
    orange,
    yellow,
    green,
    blue,
    indigo,
    violet
  );
}

.hidden {
  display: none !important;
}

#particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 10;
}

#shape-palette {
  display: flex;
  gap: 12px;
  margin-top: 15px;
}

.shape-option {
  font-size: 20px;
  background: none;
  border: 2px solid #ddd;
  border-radius: 5px;
  padding: 5px 10px;
  cursor: pointer;
}

.shape-option:hover {
  border-color: #aaa;
}