:root {
  --primary-color: #0d9488; /* Teal-600 */
  --primary-hover: #0f766e; /* Teal-700 */
  --danger-color: #ef4444;
  --danger-hover: #dc2626;
  --bg-color: #f8fafc; /* Slate-50 */
  --card-bg: #ffffff;
  --text-color: #0f172a; /* Slate-900 */
  --text-secondary: #64748b; /* Slate-500 */
  --border-color: #e2e8f0; /* Slate-200 */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1),
    0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100%;
}

header {
  background-color: var(--card-bg);
  padding: 0.75rem 2rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10;
  box-shadow: none;
}

h1 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-color);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  letter-spacing: -0.025em;
}

.badge {
  font-size: 0.625rem;
  background-color: #ccfbf1;
  color: #0f766e;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

main {
  flex: 1;
  display: flex;
  padding: 1.5rem;
  gap: 1.5rem;
  overflow: hidden;
  width: 100%;
  min-height: 0; /* 防止内容撑开高度 */
}

.sidebar {
  width: 500px;
  background-color: var(--card-bg);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 2rem;
  overflow-y: auto;
  border: 1px solid var(--border-color);
  height: 100%; /* 确保高度填满 */
}

.canvas-container {
  flex: 1;
  background-color: #ffffff;
  background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
  background-size: 24px 24px;
  border-radius: 1rem;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-color);
}

#mynetwork {
  width: 100%;
  height: 100%;
}

.control-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.section-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.btn-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

button:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

button:active {
  transform: translateY(0);
}

button.danger {
  background-color: white;
  color: var(--danger-color);
  border: 1px solid #fecaca;
}

button.danger:hover {
  background-color: #fef2f2;
  border-color: var(--danger-color);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.stat-card {
  background-color: #f8fafc;
  padding: 1rem;
  border-radius: 0.75rem;
  text-align: center;
  border: 1px solid var(--border-color);
  transition: transform 0.2s;
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: #cbd5e1;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.info-box {
  background-color: #f1f5f9;
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  padding: 0 1rem;
  font-size: 0.875rem;
  height: 80px; /* Fixed height */
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: all 0.2s;
}

.info-box.active {
  background-color: #f0fdfa;
  border-color: #99f6e4;
}

.event-log {
  background-color: #1e293b;
  color: #34d399;
  border-radius: 0.75rem;
  padding: 1rem;
  overflow-y: auto;
  font-family: "JetBrains Mono", "Menlo", "Monaco", monospace;
  font-size: 0.75rem;
  flex: 1;
  min-height: 100px;
  box-shadow: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
}

.log-entry {
  margin-bottom: 0.35rem;
  line-height: 1.5;
  display: flex;
}

.log-time {
  color: #64748b;
  margin-right: 0.75rem;
  user-select: none;
}

/* Tabs */
.tab-header {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

.tab-btn {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.875rem;
  box-shadow: none;
}

.tab-btn:hover {
  background-color: #f1f5f9;
  color: var(--text-color);
  transform: none;
  box-shadow: none;
}

.tab-btn.active {
  background-color: #e0f2fe;
  color: #0284c7;
}

.tab-content {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex: 1;
  min-height: 0;
}

/* CodeMirror Customization */
.CodeMirror {
  height: 100% !important;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.875rem;
}

footer {
  background-color: var(--card-bg);
  padding: 1rem;
  text-align: center;
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

@media (max-width: 768px) {
  main {
    flex-direction: column-reverse;
    padding: 0.75rem;
    gap: 0.75rem;
  }

  .sidebar {
    width: 100%;
    height: auto;
    max-height: 40%;
    padding: 1rem;
    gap: 1rem;
  }

  .canvas-container {
    width: 100%;
    flex: 1;
    min-height: 300px;
  }

  header {
    padding: 0.75rem 1rem;
  }

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

  .btn-group {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* 优化移动端点击区域 */
  button {
    padding: 0.875rem 1rem;
  }
}