* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Arial', sans-serif;
}

body {
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

/* 头部样式 */
header {
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 15px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
a {
  text-decoration: none;
}
.logo-container h1 {
  cursor: pointer;
  font-size: 1.8rem;
  color: #2c3e50;
  display: flex;
  align-items: center;
}

.logo-container h1 i {
  margin-right: 10px;
  color: #3498db;
}

nav {
  max-width: 1200px;
  margin: 15px auto 0;
  padding: 0 20px;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-right: 20px;
}

nav ul li a {
  text-decoration: none;
  color: #7f8c8d;
  padding: 5px 10px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

nav ul li a:hover,
nav ul li a.active {
  color: #3498db;
  background-color: #f0f8ff;
}

/* 主要内容样式 */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}

.hero {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 60px 40px;
  margin-bottom: 30px;
  text-align: center;
}

.hero h2 {
  font-size: 2.5rem;
  color: #2c3e50;
  margin-bottom: 15px;
}

.hero p {
  color: #7f8c8d;
  font-size: 1.1rem;
  margin-bottom: 30px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  display: inline-block;
  padding: 12px 25px;
  background-color: #3498db;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.2s ease;
  font-weight: 500;
}

.btn-primary:hover {
  background-color: #2980b9;
}

.features {
  margin-bottom: 50px;
}

.features h3 {
  font-size: 1.8rem;
  color: #2c3e50;
  margin-bottom: 30px;
  text-align: center;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 30px;
}

.feature-card {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 30px 25px;
  text-align: center;
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background-color: #f0f8ff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.feature-icon i {
  font-size: 2rem;
  color: #3498db;
}

.feature-card h4 {
  font-size: 1.3rem;
  color: #2c3e50;
  margin-bottom: 15px;
}

.feature-card p {
  color: #7f8c8d;
  margin-bottom: 25px;
}

.feature-btn {
  display: inline-block;
  padding: 10px 20px;
  background-color: #3498db;
  color: white;
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.feature-btn:hover {
  background-color: #2980b9;
}

/* 功能页面样式 */
.feature-header {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 20px;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
}

.feature-header h2 {
  font-size: 1.8rem;
  color: #2c3e50;
  display: flex;
  align-items: center;
}

.feature-header h2 i {
  margin-right: 10px;
  color: #3498db;
}

.feature-header p {
  color: #7f8c8d;
  margin-left: 20px;
}

.editor-section {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 20px;
  margin-bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.upload-container {
  border: 2px dashed #3498db;
  border-radius: 8px;
  padding: 30px 20px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.upload-container:hover {
  border-color: #2980b9;
  background-color: #f9f9f9;
}

.upload-container i {
  font-size: 2.5rem;
  color: #3498db;
  margin-bottom: 15px;
}

.upload-container p {
  color: #7f8c8d;
  margin-bottom: 15px;
}

#imageUpload {
  display: none;
}

.tool-panel {
  background-color: #f9f9f9;
  border-radius: 8px;
  padding: 20px;
}

.tool-panel h3 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 15px;
  border-bottom: 1px solid #eee;
  padding-bottom: 10px;
}

.size-inputs {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

.size-inputs div {
  flex: 1;
}

.size-inputs label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.size-inputs input {
  width: 100%;
  padding: 8px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.tool-btn {
  display: block;
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
  display: flex;
  align-items: center;
}

.tool-btn i {
  margin-right: 8px;
}

.tool-btn:hover {
  background-color: #f5f5f5;
  border-color: #ccc;
}

.preview-section {
  display: flex;
  flex-direction: column;
}

.preview-section h3 {
  font-size: 1.2rem;
  color: #2c3e50;
  margin-bottom: 15px;
}

.preview-container {
  background-color: #f9f9f9;
  border-radius: 8px;
  padding: 20px;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

#previewCanvas {
  max-width: 100%;
  max-height: 500px;
  border: 1px solid #eee;
  background-color: white;
}

.action-buttons {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.action-btn {
  padding: 10px 20px;
  background-color: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  color: #333;
}

.action-btn:hover {
  background-color: #f5f5f5;
  border-color: #ccc;
}

.action-btn.primary {
  background-color: #3498db;
  color: white;
  border-color: #2980b9;
}

.action-btn.primary:hover {
  background-color: #2980b9;
}

.action-btn:disabled {
  background-color: #ccc;
  color: #666;
  cursor: not-allowed;
  border-color: #aaa;
}

footer {
  text-align: center;
  color: #7f8c8d;
  padding: 20px 0;
  margin-top: 50px;
}

@media (min-width: 768px) {
  .editor-section {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .upload-container {
    flex: 0 0 100%;
  }

  .tool-panel {
    flex: 0 0 250px;
    max-width: 100%;
  }

  .preview-section {
    flex: 1;
    min-width: 0;
  }
}