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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--tg-theme-bg-color, #fff);
  color: var(--tg-theme-text-color, #000);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

#app {
  padding: 16px;
  max-width: 480px;
  margin: 0 auto;
}

/* Balance bar */
.balance-section {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

.balance-label {
  font-size: 13px;
  color: var(--tg-theme-hint-color, #999);
  margin-bottom: 4px;
}

.balance-amount {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.balance-bar {
  height: 6px;
  background: var(--tg-theme-bg-color, #ddd);
  border-radius: 3px;
  overflow: hidden;
}

.balance-bar-fill {
  height: 100%;
  background: var(--tg-theme-button-color, #3390ec);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.balance-sub {
  font-size: 12px;
  color: var(--tg-theme-hint-color, #999);
  margin-top: 4px;
}

/* Instance cards */
.card {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 12px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.card:active {
  opacity: 0.7;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.card-name {
  font-size: 16px;
  font-weight: 600;
}

.badge {
  font-size: 12px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
  text-transform: uppercase;
}

.badge-running {
  background: #34c759;
  color: #fff;
}

.badge-stopped {
  background: #ff9500;
  color: #fff;
}

.badge-creating {
  background: var(--tg-theme-button-color, #3390ec);
  color: #fff;
}

.badge-trial_expired {
  background: #ff3b30;
  color: #fff;
}

.badge-destroyed {
  background: #8e8e93;
  color: #fff;
}

.card-meta {
  font-size: 13px;
  color: var(--tg-theme-hint-color, #999);
  line-height: 1.5;
}

/* Detail view */
.detail-header {
  margin-bottom: 20px;
}

.detail-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.detail-id {
  font-size: 13px;
  color: var(--tg-theme-hint-color, #999);
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.info-item {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 10px;
  padding: 12px;
}

.info-label {
  font-size: 12px;
  color: var(--tg-theme-hint-color, #999);
  margin-bottom: 2px;
}

.info-value {
  font-size: 15px;
  font-weight: 600;
}

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

.btn {
  display: block;
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: opacity 0.15s;
  text-decoration: none;
}

.btn:active {
  opacity: 0.7;
}

.btn-primary {
  background: var(--tg-theme-button-color, #3390ec);
  color: var(--tg-theme-button-text-color, #fff);
}

.btn-secondary {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  color: var(--tg-theme-text-color, #000);
}

.btn-danger {
  background: #ff3b30;
  color: #fff;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Provider grid */
.provider-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}

.provider-card {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 12px;
  padding: 16px 10px;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.15s, opacity 0.15s;
}

.provider-card:active {
  opacity: 0.7;
}

.provider-card.selected {
  border-color: var(--tg-theme-button-color, #3390ec);
}

.provider-icon {
  font-size: 28px;
  margin-bottom: 6px;
}

.provider-name {
  font-size: 14px;
  font-weight: 600;
}

.provider-desc {
  font-size: 11px;
  color: var(--tg-theme-hint-color, #999);
  margin-top: 2px;
}

/* Key input */
.key-input-section {
  margin-bottom: 16px;
}

.key-input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--tg-theme-hint-color, #ccc);
  border-radius: 10px;
  font-size: 14px;
  background: var(--tg-theme-bg-color, #fff);
  color: var(--tg-theme-text-color, #000);
  font-family: monospace;
}

.key-input::placeholder {
  color: var(--tg-theme-hint-color, #999);
}

.key-hint {
  font-size: 12px;
  color: var(--tg-theme-hint-color, #999);
  margin-top: 6px;
}

/* Spinner */
.spinner-view {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--tg-theme-secondary-bg-color, #eee);
  border-top-color: var(--tg-theme-button-color, #3390ec);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

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

.spinner-text {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.spinner-sub {
  font-size: 13px;
  color: var(--tg-theme-hint-color, #999);
}

/* Section title */
.section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--tg-theme-hint-color, #999);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 10px;
}

/* Empty state */
.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--tg-theme-hint-color, #999);
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
}

.empty-text {
  font-size: 15px;
  margin-bottom: 20px;
}

/* Loading */
.loading {
  display: flex;
  justify-content: center;
  padding: 40px;
}

/* Settings */
.settings-card {
  background: var(--tg-theme-secondary-bg-color, #f0f0f0);
  border-radius: 12px;
  padding: 14px 16px;
  margin-bottom: 8px;
}

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.settings-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.btn-small {
  padding: 6px 12px;
  border: none;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
  white-space: nowrap;
}

.btn-small:active {
  opacity: 0.7;
}

.btn-small.btn-secondary {
  background: var(--tg-theme-bg-color, #fff);
  color: var(--tg-theme-button-color, #3390ec);
}

.btn-small.btn-danger {
  background: transparent;
  color: #ff3b30;
}

select.key-input {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23999' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}