/* 通用样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Arial', sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.admin-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

h1, h2 {
  margin-bottom: 20px;
  color: #333;
}

h1 {
  text-align: center;
  font-size: 2em;
}

h2 {
  font-size: 1.5em;
  border-bottom: 2px solid #007bff;
  padding-bottom: 10px;
}

.section {
  display: none;
  text-align: center;
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

.section.visible {
  display: block;
}

.input-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  margin: 20px 0;
}

#number-input {
  width: 100%;
  max-width: 300px;
  padding: 12px;
  font-size: 18px;
  border: 2px solid #ddd;
  border-radius: 5px;
  text-align: center;
}

#number-input:focus {
  outline: none;
  border-color: #007bff;
}

#submit-btn, #reset-btn, .primary-btn {
  padding: 12px 24px;
  font-size: 16px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

#submit-btn:hover, #reset-btn:hover, .primary-btn:hover {
  background-color: #0056b3;
}

#submit-btn:disabled {
  background-color: #ccc;
  cursor: not-allowed;
}

.error-message {
  color: red;
  margin-top: 10px;
  min-height: 20px;
}

/* 加载动画 */
.spinner {
  margin: 20px auto 30px;
  width: 70px;
  text-align: center;
}

.spinner > div {
  width: 18px;
  height: 18px;
  background-color: #007bff;
  border-radius: 100%;
  display: inline-block;
  animation: sk-bouncedelay 1.4s infinite ease-in-out both;
}

.spinner .bounce1 {
  animation-delay: -0.32s;
}

.spinner .bounce2 {
  animation-delay: -0.16s;
}

@keyframes sk-bouncedelay {
  0%, 80%, 100% {
    transform: scale(0);
  }
  40% {
    transform: scale(1);
  }
}

#result-image {
  max-width: 100%;
  max-height: 500px;
  border-radius: 5px;
  margin-bottom: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* 管理员面板样式 */
.panel-section {
  background: white;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.link-controls {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

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

#current-link {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.domain-input-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

#domain-input {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

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

#domain-link {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.numbers-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 10px;
  margin-top: 15px;
}

.number-item {
  background: #e9ecef;
  padding: 10px;
  border-radius: 5px;
  text-align: center;
  font-weight: bold;
}

.image-controls {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

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

#target-user, #image-upload {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

#send-image-btn {
  align-self: flex-start;
  padding: 10px 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }
  
  .admin-container {
    padding: 10px;
  }
  
  h1 {
    font-size: 1.5em;
  }
  
  h2 {
    font-size: 1.2em;
  }
  
  .section {
    padding: 20px;
  }
  
  #number-input {
    max-width: 100%;
  }
  
  .link-controls {
    align-items: center;
  }
  
  .current-link-display input {
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 14px;
  }
  
  h1 {
    font-size: 1.3em;
  }
  
  h2 {
    font-size: 1.1em;
  }
  
  .input-group {
    gap: 10px;
  }
  
  #number-input, #submit-btn, #reset-btn {
    width: 100%;
  }
}