* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: #1a1a2e;
  color: #eaeaea;
}

.page {
  max-width: 420px;
  margin: 0 auto;
  padding: 32px 20px;
}

h1 {
  font-size: 24px;
  margin-bottom: 4px;
}

.subtitle {
  color: #a9a9c0;
  margin-top: 0;
  margin-bottom: 24px;
  font-size: 14px;
}

.card {
  background: #23233a;
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}

label {
  display: block;
  font-size: 13px;
  color: #a9a9c0;
  margin-bottom: 6px;
  margin-top: 14px;
}

input {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid #3a3a55;
  background: #16162a;
  color: #fff;
  font-size: 15px;
}

input:focus {
  outline: 2px solid #ffd23f;
}

button {
  width: 100%;
  margin-top: 20px;
  padding: 12px;
  border: none;
  border-radius: 8px;
  background: #ffd23f;
  color: #1a1a2e;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
}

button:hover {
  background: #ffdc66;
}

button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.error {
  color: #ff6b6b;
  font-size: 13px;
  margin-top: 10px;
  min-height: 16px;
}

.link {
  color: #ffd23f;
  text-decoration: none;
  font-size: 14px;
}

.switch-row {
  margin-top: 18px;
  text-align: center;
  font-size: 14px;
  color: #a9a9c0;
}

.stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 10px 0;
  border-bottom: 1px solid #3a3a55;
}

.stat:last-child {
  border-bottom: none;
}

.stat .value {
  font-size: 22px;
  font-weight: 700;
  color: #ffd23f;
}

.leaderboard-row {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid #3a3a55;
  font-size: 14px;
}

.leaderboard-row:last-child {
  border-bottom: none;
}

.leaderboard-row .rank {
  color: #a9a9c0;
  width: 28px;
}

.top-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}