.auth-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  background: radial-gradient(ellipse at 50% 0%, #1a1a40 0%, var(--bg) 70%);
}

.auth-box {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow);
}

.game-title {
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: bold;
  text-align: center;
  color: var(--accent);
  line-height: 1.1;
  letter-spacing: 0.1em;
  text-shadow: 0 0 30px rgba(85,102,255,0.5);
  margin-bottom: 6px;
}

.title-sub {
  color: var(--accent2);
  font-size: 1.6rem;
}

.game-subtitle {
  text-align: center;
  color: var(--text-dim);
  font-size: 12px;
  margin-bottom: 28px;
}

.tab-bar {
  display: flex;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}

.tab-btn {
  background: transparent;
  color: var(--text-dim);
  padding: 8px 20px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  font-size: 14px;
}

.tab-btn.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.tab-btn:hover { color: var(--text); }

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 0.05em;
}

.auth-form .btn-primary {
  width: 100%;
  margin-top: 4px;
}