:root {
  --tg-theme-bg-color: #ffffff;
  --tg-theme-text-color: #000000;
  --tg-theme-button-color: #40a7e3;
  --tg-theme-button-text-color: #ffffff;
  --tg-theme-secondary-bg-color: #f1f1f1;
}

* {
  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);
  color: var(--tg-theme-text-color);
  line-height: 1.6;
}

#app {
  max-width: 100%;
  min-height: 100vh;
  padding: 16px;
  padding-bottom: 80px;
}

.app-header {
  text-align: center;
  margin-bottom: 30px;
  padding-top: 20px;
}

.app-header h1 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--tg-theme-text-color);
}

.subtitle {
  color: #666;
  font-size: 14px;
  opacity: 0.8;
}

.tabs {
  display: flex;
  background: var(--tg-theme-secondary-bg-color);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 24px;
}

.tab {
  flex: 1;
  padding: 12px;
  border: none;
  background: transparent;
  color: var(--tg-theme-text-color);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s;
}

.tab.active {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
}

.content {
  background: var(--tg-theme-secondary-bg-color);
  border-radius: 16px;
  padding: 20px;
  min-height: 300px;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
}

.empty-icon {
  font-size: 64px;
  margin-bottom: 20px;
  opacity: 0.5;
}

.empty-state h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--tg-theme-text-color);
}

.empty-state p {
  color: #666;
  margin-bottom: 24px;
  font-size: 14px;
}

.btn-primary {
  background: var(--tg-theme-button-color);
  color: var(--tg-theme-button-text-color);
  border: none;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  width: 100%;
  transition: opacity 0.2s;
}

.btn-primary:active {
  opacity: 0.8;
}

.app-footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  color: #999;
  font-size: 12px;
  border-top: 1px solid var(--tg-theme-secondary-bg-color);
}

/* Адаптивность */
@media (max-width: 480px) {
  #app {
    padding: 12px;
  }
  
  .tab {
    font-size: 12px;
    padding: 10px 6px;
  }
}