:root {
  --primary-color: #FFDAB9;  /* Peach puff */
  --secondary-color: #E6E6FA; /* Lavender */
  --query-color: #D8BFD8;    /* Thistle */
  --background-color: #FCFBF8; /* Off white */
  --surface-color: #FFFFFF;
  --text-color: #333333;
  --text-secondary-color: #777777;
  --font-main: 'ZCOOL KuaiLe', cursive;
  --shadow-color: rgba(0,0,0,0.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--background-color);
  color: var(--text-color);
  min-height: 100vh;
  padding: 20px;
}

.container {
  background: var(--surface-color);
  border-radius: 20px;
  box-shadow: 0 10px 30px var(--shadow-color);
  padding: 30px;
  max-width: 900px;
  margin: 0 auto;
  border: 1px solid rgba(255,218,185,0.3);
}

h1 {
  color: #333;
  text-align: center;
  margin-bottom: 25px;
  font-family: var(--font-main);
  font-size: 2.5rem;
  letter-spacing: 2px;
  position: relative;
  padding: 15px 0;
}

h1::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  border-radius: 3px;
}

.input-group, .output-group {
  margin-bottom: 25px;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: bold;
  color: var(--text-color);
  font-family: var(--font-main);
  letter-spacing: 1px;
}

textarea {
  width: 100%;
  height: 150px;
  padding: 15px;
  border: 1px solid rgba(255,218,185,0.5);
  border-radius: 10px;
  box-sizing: border-box;
  font-family: 'Courier New', monospace;
  font-size: 14px;
  background-color: var(--surface-color);
  box-shadow: 0 4px 20px var(--shadow-color);
  transition: all 0.3s ease;
  resize: none;
}

textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 5px 25px rgba(255,218,185,0.5);
}

.btn-container {
  display: flex;
  gap: 15px;
  margin: 25px 0;
}

button {
  padding: 12px 25px;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  font-size: 1rem;
  font-family: var(--font-main);
  letter-spacing: 1px;
  transition: all 0.3s ease;
  background-image: linear-gradient(45deg, var(--primary-color), var(--query-color));
  color: white;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  background-size: 200% 200%;
  animation: gradientFlow 5s ease infinite;
}

@keyframes gradientFlow {
  0% { background-position: 0 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0 50%; }
}

button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255,218,185,0.4), 0 4px 12px rgba(230,230,250,0.5);
}

.result-item {
  margin-bottom: 20px;
  padding: 20px;
  border-left: 4px solid var(--primary-color);
  background-color: rgba(255,218,185,0.05);
  border-radius: 0 10px 10px 0;
  transition: all 0.3s ease;
}

.result-item:hover {
  transform: translateX(5px);
  box-shadow: 0 5px 15px rgba(255,218,185,0.2);
}

.result-title {
  font-weight: bold;
  margin-bottom: 10px;
  color: var(--text-color);
  display: flex;
  align-items: center;
  font-family: var(--font-main);
  letter-spacing: 1px;
  font-size: 1.2rem;
}

.result-content {
  white-space: pre-wrap;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  overflow-x: auto;
  padding: 15px;
  background: var(--surface-color);
  border-radius: 8px;
  margin-top: 10px;
  border: 1px solid rgba(255,218,185,0.3);
}

.warning {
  background-color: rgba(255,193,7,0.1);
  border-left: 4px solid var(--alert-warning-text);
  padding: 20px;
  margin: 25px 0;
  border-radius: 10px;
  color: var(--text-color);
  font-family: var(--font-main);
  letter-spacing: 1px;
}

.warning strong {
  color: var(--alert-warning-text);
}

.footer {
  text-align: center;
  margin-top: 40px;
  color: var(--text-secondary-color);
  font-family: var(--font-main);
  letter-spacing: 1px;
}

/* 标签页样式 */
.tab-container {
  display: flex;
  margin-bottom: 15px;
  border-bottom: 1px solid #ddd;
}

.tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  font-family: 'ZCOOL KuaiLe', sans-serif;
  font-size: 16px;
  color: #555;
}

.tab-btn.active {
  border-bottom: 3px solid var(--primary-color);
  color: #000;
  font-weight: bold;
}

.tab-content {
  display: none;
}

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

/* 文件上传样式 */
.file-upload {
  margin-top: 10px;
  display: flex;
  align-items: center;
}

.file-upload-label {
  padding: 8px 12px;
  background-image: linear-gradient(45deg, var(--primary-color), var(--query-color));
  color: white;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s;
  background-size: 200% 200%;
  animation: gradientFlow 5s ease infinite;
}

.file-upload-label:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.file-name {
  margin-left: 10px;
  font-size: 14px;
  color: var(--text-secondary-color);
}