.page-container {
  min-height: 100vh;
  background: #f5f7fa;
}

.header {
  background: white;
  padding: 20px 40px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: 700;
  color: #667eea;
}

.nav {
  display: flex;
  gap: 30px;
}

.nav-link {
  text-decoration: none;
  color: #666;
  font-weight: 500;
  padding: 8px 16px;
  border-radius: 8px;
  transition: all 0.3s;

  &:hover {
    color: #667eea;
    background: #f0f0f0;
  }

  &.active {
    color: #667eea;
    background: #e8ebff;
  }
}

.content {
  padding: 40px;
  max-width: 1000px;
  margin: 0 auto;

  @media (max-width: 768px) {
    padding: 20px;
  }
}

.page-header {
  margin-bottom: 40px;

  h1 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
  }

  p {
    color: #666;
    font-size: 16px;
  }
}

.loading {
  text-align: center;
  padding: 60px 20px;

  .spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
  }

  p {
    color: #666;
  }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.error-card {
  background: white;
  border-radius: 15px;
  padding: 40px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);

  p {
    color: #c33;
    margin-bottom: 20px;
  }
}

.btn-retry {
  background: #667eea;
  color: white;
  border: none;
  padding: 12px 30px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s;

  &:hover {
    background: #764ba2;
  }
}

.empty-state {
  background: white;
  border-radius: 20px;
  padding: 60px 40px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);

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

  h3 {
    font-size: 24px;
    color: #333;
    margin-bottom: 10px;
  }

  p {
    color: #666;
    margin-bottom: 30px;
  }
}

.btn-primary {
  display: inline-block;
  background: #667eea;
  color: white;
  text-decoration: none;
  padding: 14px 30px;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s;

  &:hover {
    background: #764ba2;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
  }
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.history-item {
  background: white;
  border-radius: 12px;
  padding: 25px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.3s;

  @media (max-width: 768px) {
    padding: 20px;
  }

  &:hover {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  }
}

.item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid #f0f0f0;
}

.item-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.type-badge {
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;

  &.type-created {
    background: #e8ebff;
    color: #667eea;
  }

  &.type-accepted {
    background: #e6f7ff;
    color: #1890ff;
  }
}

.item-number {
  font-family: monospace;
  font-size: 16px;
  color: #666;
  font-weight: 500;
}

.item-amount {
  font-size: 24px;
  font-weight: 700;
  color: #333;
}

.item-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;

  @media (max-width: 768px) {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

.detail {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.detail-label {
  font-size: 12px;
  color: #999;
  text-transform: uppercase;
  font-weight: 600;
}

.detail-value {
  font-size: 14px;
  color: #333;
  font-weight: 500;
}

.status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  background: #f5f5f5;
  color: #999;
}