:root {
  color: #1f2937;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f5f7fb;
}

body {
  margin: 0;
}

.app-shell {
  min-height: 100vh;
}

.sidebar {
  background: #101827;
  color: #fff;
}

.brand {
  align-items: center;
  display: flex;
  gap: 12px;
  height: 64px;
  padding: 0 18px;
}

.brand-mark {
  align-items: center;
  background: #2dd4bf;
  border-radius: 6px;
  color: #083344;
  display: inline-flex;
  font-weight: 800;
  height: 34px;
  justify-content: center;
  width: 34px;
}

.brand small {
  color: #9ca3af;
  display: block;
  font-size: 12px;
  margin-top: 2px;
}

.menu {
  border-right: 0;
}

.sidebar .el-menu {
  background: transparent;
}

.sidebar .el-menu-item,
.sidebar .el-sub-menu__title {
  color: #d1d5db;
}

.sidebar .el-menu-item.is-active {
  background: #1f3a4a;
  color: #67e8f9;
}

.topbar {
  align-items: center;
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
  display: flex;
  justify-content: space-between;
}

.main {
  padding: 20px;
}

.panel {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 18px;
}

.toolbar {
  align-items: center;
  display: flex;
  gap: 12px;
  justify-content: space-between;
  margin-bottom: 14px;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.metric {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 18px;
}

.metric strong {
  display: block;
  font-size: 28px;
  margin-top: 8px;
}

.login-page {
  align-items: center;
  background: linear-gradient(135deg, #0f172a, #164e63);
  display: flex;
  min-height: 100vh;
  justify-content: center;
}

.login-box {
  background: #fff;
  border-radius: 8px;
  padding: 28px;
  width: 360px;
}

.chat {
  display: grid;
  gap: 16px;
  grid-template-columns: 320px 1fr;
}

.chat-log {
  background: #f8fafc;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  height: 460px;
  overflow: auto;
  padding: 12px;
}

.message {
  border-radius: 8px;
  margin-bottom: 10px;
  padding: 10px;
  white-space: pre-wrap;
}

.message.user {
  background: #dbeafe;
}

.message.assistant {
  background: #ecfdf5;
}