:root {
  --primary-color: #4a6cf7;
  --primary-dark: #3a56d0;
  --bg-color: #0f172a;
  --card-bg: #1e293b;
  --text-color: #e2e8f0;
  --border-color: #334155;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --info-color: #60a5fa;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

* {
  margin: 0;
  padding: 0;

}

body {
  background: var(--bg-color);
}

.container {
  box-sizing: border-box;
  color: var(--text-color);
  max-width: 1600px;
  min-width: 1200px;
  width: 100%;
  margin: auto;
  padding: 20px;
  margin: 0 auto;
}
.container *{
   box-sizing: border-box;
}
header {
  text-align: center;
  padding: 30px 0;
  margin-bottom: 20px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
  background: linear-gradient(90deg, var(--primary-color), var(--success-color));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.subtitle {
  font-size: 1.1rem;
  color: #94a3b8;
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.6;
}

.main-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

.panel {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 25px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 1px solid var(--border-color);
}

.panel-title {
  font-size: 1.4rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
}

.code-container {
  flex: 1;
  position: relative;
}

textarea {
  width: 100%;
  height: 100%;
  min-height: 450px;
  background: #0f172a;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  color: var(--text-color);
  font-family: 'Fira Code', 'Consolas', monospace;
  font-size: 15px;
  line-height: 1.6;
  resize: none;
  transition: var(--transition);
}

textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.3);
}

.stats-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 25px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 20px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.stat-value {
  font-size: 2.2rem;
  font-weight: 700;
  margin: 10px 0;
}

.stat-before {
  color: var(--warning-color);
}

.stat-after {
  color: var(--success-color);
}

.stat-title {
  font-size: 1rem;
  color: #94a3b8;
}

.stat-percent {
  font-size: 1.8rem;
  color: var(--primary-color);
}

.controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 25px 0;
  padding: 0 10px;
}

.options {
  display: flex;
  gap: 25px;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.option-item input {
  width: 18px;
  height: 18px;
  cursor: pointer;
}

.option-item label {
  cursor: pointer;
  font-size: 1rem;
}

.btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 14px 28px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  box-shadow: 0 4px 6px rgba(74, 108, 247, 0.3);
}

.btn:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-clear {
  background: #64748b;
}

.btn-clear:hover {
  background: #475569;
}

.btn-sample {
  background: #8b5cf6;
}

.btn-sample:hover {
  background: #7c3aed;
}

.btn-group {
  display: flex;
  gap: 15px;
}

.use-cases {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  padding: 30px;
  margin-top: 30px;
  box-shadow: var(--shadow);
}

.use-cases h2 {
  font-size: 1.6rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.case-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 15px;
  background: rgba(30, 41, 59, 0.7);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.privacy-note {
  text-align: center;
  margin-top: 30px;
  padding: 15px;
  color: #94a3b8;
  font-size: 0.95rem;
  background: rgba(30, 41, 59, 0.5);
  border-radius: var(--border-radius);
}

footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px;
  color: #64748b;
  font-size: 0.9rem;
  border-top: 1px solid var(--border-color);
}

.language-selector {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 20px;
  background: var(--card-bg);
  padding: 15px 25px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
}

.language-selector label {
  font-weight: 600;
  font-size: 1.1rem;
}

.language-selector select {
  background: #0f172a;
  color: var(--text-color);
  border: 1px solid var(--border-color);
  padding: 10px 15px;
  border-radius: 8px;
  font-size: 1rem;
  width: 260px;
  cursor: pointer;
  transition: var(--transition);
}

.language-selector select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.3);
}

/* 响应式调整 */
@media (max-width: 1200px) {
  .main-content {
    grid-template-columns: 1fr;
  }

  .stats-container {
    grid-template-columns: repeat(2, 1fr);
  }
}