:root {
  --primary-color: #1976d2;
  --primary-light: #42a5f5;
  --primary-dark: #1565c0;
  --background-color: #f5f5f5;
  --surface-color: #ffffff;
  --text-primary: #212121;
  --text-secondary: #757575;
  --error-color: #d32f2f;
  --success-color: #388e3c;
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-2: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
}

body {
  font-family: 'Roboto', sans-serif;
  background-color: var(--background-color);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

.app-container {
  width: 100%;
  max-width: 600px;
  padding: 20px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 16px;
  background-color: var(--surface-color);
  border-radius: 8px;
  box-shadow: var(--shadow-1);
}

h1 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 500;
}

select {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 1rem;
  background-color: white;
  cursor: pointer;
}

.card {
  background-color: var(--surface-color);
  border-radius: 8px;
  box-shadow: var(--shadow-1);
  padding: 24px;
  margin-bottom: 16px;
  transition: box-shadow 0.3s cubic-bezier(.25, .8, .25, 1);
}

.card:hover {
  box-shadow: var(--shadow-2);
}

.empty-state {
  text-align: center;
  padding: 48px 24px;
}

.btn {
  border: none;
  border-radius: 4px;
  padding: 10px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
}

.btn-primary:disabled {
  background-color: #bdbdbd;
  cursor: not-allowed;
}

.btn-danger {
  color: var(--error-color);
  background-color: transparent;
}

.btn-danger:hover {
  background-color: #ffebee;
}

.btn-text {
  color: var(--primary-color);
  background-color: transparent;
}

.btn-text:hover {
  background-color: #e3f2fd;
}

.instance-details {
  margin-bottom: 24px;
}

.status-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.status-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: #bdbdbd;
}

.status-indicator.running {
  background-color: var(--success-color);
}

.status-indicator.pending {
  background-color: #fbc02d;
}

.status-indicator.stopping {
  background-color: #f57c00;
}

.status-indicator.terminated {
  background-color: #d32f2f;
}

.ip-address {
  font-family: monospace;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.material-symbols-outlined {
  font-size: 20px;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background-color: #323232;
  color: white;
  padding: 12px 24px;
  border-radius: 4px;
  box-shadow: var(--shadow-2);
  opacity: 0;
  transition: opacity 0.3s;
  z-index: 1000;
}

.toast.show {
  opacity: 1;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: var(--surface-color);
  border-radius: 8px;
  box-shadow: var(--shadow-2);
  padding: 24px;
  width: 90%;
  max-width: 400px;
  transform: translateY(20px);
  transition: transform 0.2s;
}

.modal-overlay.show .modal {
  transform: translateY(0);
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 16px;
}

.modal-content {
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Spinner Animation */
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.spin {
  animation: spin 1s linear infinite;
}