* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #ffffff;
  min-height: 100vh;
  color: #000000;
  padding-bottom: 100px;
}

/* Navigation */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 30px;
  background: #000000;
  border-bottom: 1px solid #e0e0e0;
  margin-bottom: 20px;
}

.profile-btn {
  background: #ffffff;
  border: 2px solid #000000;
  border-radius: 50px;
  padding: 8px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #000000;
  font-weight: 500;
  transition: all 0.3s ease;
}

.profile-btn:hover {
  background: #f5f5f5;
  transform: translateY(-2px);
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #000000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 16px;
  color: #ffffff;
}

.notifications-btn {
  background: #ffffff;
  border: 2px solid #000000;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  position: relative;
}

.notifications-btn:hover {
  background: #f5f5f5;
  transform: scale(1.1);
}

.notification-badge {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 12px;
  height: 12px;
  background: #000000;
  border-radius: 50%;
  border: 2px solid white;
}

/* Balance Section */
.balance-section {
  background: #000000;
  border-radius: 25px;
  width: 90%;
  max-width: 500px;
  margin: 0 auto 40px auto;
  padding: 30px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  color: #ffffff;
}

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

.balance-header span {
  font-size: 16px;
  color: #cccccc;
  font-weight: 500;
}

.eye-btn {
  background: #ffffff;
  border: 1px solid #ffffff;
  border-radius: 50%;
  width: 35px;
  height: 35px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.eye-btn:hover {
  background: #f5f5f5;
}

.balance {
  font-size: 3rem;
  font-weight: bold;
  color: #ffffff;
  text-align: center;
  font-family: 'Courier New', monospace;
}

.currency {
  color: #ffffff;
}

/* Quick Actions */
.quick-action {
  margin: 40px 30px;
}

.quick-action h3 {
  color: #000000;
  margin-bottom: 20px;
  font-size: 18px;
  font-weight: 600;
}

.action-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.action-btn {
  width: 70px;
  height: 70px;
  background: #ffffff;
  border: 2px solid #000000;
  border-radius: 20px;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.action-btn:hover {
  background: #000000;
  color: #ffffff;
  transform: translateY(-5px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.action-btn:active {
  transform: translateY(-2px);
}

.action-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 5px;
  background: #000000;
  color: #ffffff;
}

.action-btn:hover .action-icon {
  background: #ffffff;
  color: #000000;
}

.action-label {
  font-size: 10px;
  color: #000000;
  font-weight: 600;
  text-transform: uppercase;
}

.action-btn:hover .action-label {
  color: #ffffff;
}

/* Recent Transactions */
.recent-transactions {
  margin: 40px 30px;
}

.recent-transactions h3 {
  color: #000000;
  margin-bottom: 20px;
  font-size: 18px;
  font-weight: 600;
}

.transactions-container {
  background: #ffffff;
  border: 2px solid #000000;
  border-radius: 20px;
  padding: 30px;
  text-align: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.no-transactions {
  color: #666666;
  font-style: italic;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.no-transactions-icon {
  width: 60px;
  height: 60px;
  background: #000000;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #ffffff;
}

/* Footer Navigation */
footer {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 400px;
  background: #000000;
  border-radius: 30px;
  padding: 15px;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  border: 1px solid #000000;
}

footer a {
  padding: 12px;
  border-radius: 15px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

footer a:hover {
  background: #333333;
  transform: translateY(-2px);
}

footer a.active {
  background: #ffffff;
}

footer a.active .nav-icon {
  background: #000000;
  color: #ffffff;
}

.nav-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000000;
  font-size: 14px;
  font-weight: bold;
}

/* Responsive Design */
@media (max-width: 768px) {
  nav {
      padding: 15px 20px;
  }

  .balance-section {
      width: 95%;
      margin: 0 auto 30px auto;
      padding: 25px;
  }

  .balance {
      font-size: 2.5rem;
  }

  .quick-action {
      margin: 30px 20px;
  }

  .action-buttons {
      gap: 15px;
  }

  .action-btn {
      width: 60px;
      height: 60px;
  }

  .recent-transactions {
      margin: 30px 20px;
  }
}

/* Loading Animation */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid #cccccc;
  border-radius: 50%;
  border-top-color: #000000;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Hover states for better interaction */
.balance-section:hover {
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
}

.transactions-container:hover {
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}