* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  background: radial-gradient(circle at top left, #e0ebff 0, #eef2ff 40%, #e5ecff 100%);
  color: #0f172a;
  min-height: 100vh;
  line-height: 1.45;
  font-size: 20px;
  overflow-x: hidden;
}

.root {
  max-width: 1150px;
  margin: 24px auto;
  padding: 16px;
}

.app-card {
  background: #ffffff;
  border-radius: 18px;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.14);
  padding: 20px 24px 22px;
  border-top: 4px solid #1f3a8a;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  gap: 12px;
}

.app-title {
  font-size: 1.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #020617;
}

.tabs {
  display: inline-flex;
  background: #e5e7eb;
  border-radius: 999px;
  padding: 4px;
  width: fit-content;
}

.tab-btn {
  border: none;
  margin: 0 2px;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 1.05rem;
  cursor: pointer;
  background: transparent;
  color: #4b5563;
  transition: all 0.18s ease;
  white-space: nowrap;
}

.tab-btn:hover {
  background: rgba(31, 58, 138, 0.08);
}

.tab-btn.active {
  background: #1f3a8a;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.35);
}

.layout {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 16px;
}

.layout > div {
  flex: 1;
}

.card {
  background: #ffffff;
  border-radius: 14px;
  padding: 14px 16px 12px;
  border: 1px solid #e5e7eb;
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.06);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 10px;
  gap: 8px;
}

.card-title {
  font-size: 1.22rem;
  font-weight: 600;
  color: #0f172a;
}

.card-subtitle {
  font-size: 1.02rem;
  color: #6b7280;
}

.section-spacer {
  height: 20px;
}