:root {
  color-scheme: light;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  --bg: #f7f4ec;
  --panel: #ffffff;
  --accent: #f2b01e;
  --accent-dark: #cc8c00;
  --text: #1b1b1b;
  --muted: #6f6b63;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at top, #fff2c7, var(--bg));
  color: var(--text);
}

.app {
  max-width: 420px;
  margin: 24px auto;
  padding: 20px;
}

.top {
  text-align: center;
  margin-bottom: 16px;
}

.title {
  font-size: 28px;
  font-weight: 700;
}

.subtitle {
  color: var(--muted);
}

.lang-row {
  margin-top: 10px;
  display: flex;
  justify-content: center;
}

.lang {
  border: 1px solid rgba(27, 27, 27, 0.15);
  border-radius: 999px;
  padding: 6px 12px;
  background: #fff7dd;
  font-weight: 600;
  cursor: pointer;
}

.lang:active {
  transform: scale(0.98);
}

.panel {
  background: var(--panel);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  display: grid;
  gap: 16px;
  justify-items: center;
}

.balance {
  font-size: 42px;
  font-weight: 700;
}

.tap {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: none;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(145deg, var(--accent), var(--accent-dark));
  box-shadow: 0 10px 20px rgba(204, 140, 0, 0.3);
  cursor: pointer;
  transition: transform 0.08s ease;
}

.tap:active {
  transform: scale(0.97);
}

.tap:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.meta {
  color: var(--muted);
}