* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
  padding: 24px;
}

.auth-card {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  padding: 40px 36px;
  max-width: 380px;
  width: 100%;
  text-align: center;
}

.auth-icon {
  font-size: 40px;
  margin-bottom: 8px;
}

h1 {
  font-size: 22px;
  font-weight: 700;
  color: #1e293b;
  margin: 0 0 12px;
}

.status {
  font-size: 14px;
  color: #64748b;
  background: #f1f5f9;
  border-radius: 8px;
  padding: 10px 14px;
  margin: 0 0 24px;
  min-height: 20px;
}

.login-links,
.logout-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hidden {
  display: none;
}

.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 10px;
  border: none;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.btn-icon {
  font-size: 16px;
  font-weight: 800;
}

.btn-google {
  background: #ffffff;
  color: #3c4043;
  border: 1px solid #dadce0;
}

.btn-github {
  background: #24292f;
  color: #ffffff;
}

.btn-logout {
  background: #ef4444;
  color: #ffffff;
}

.footer-note {
  margin: 28px 0 0;
  font-size: 11px;
  color: #94a3b8;
  letter-spacing: 0.3px;
}