* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #f3f6fb;
  color: #172033;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px;
}

.header {
  background: #0b2559;
  color: white;
  border-radius: 18px;
  padding: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.header h1 {
  margin: 0;
  font-size: 34px;
}

.header p {
  margin: 8px 0 0;
  color: #d6e2ff;
}

.badge {
  background: #23c55e;
  color: #04130a;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: bold;
}

.layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 24px;
}

.card {
  background: white;
  border-radius: 18px;
  padding: 24px;
  box-shadow: 0 10px 24px rgba(18, 38, 63, 0.08);
  border: 1px solid #e2e8f0;
}

.card h2 {
  margin-top: 0;
  color: #0b2559;
}

.muted {
  color: #64748b;
  line-height: 1.5;
}

label {
  display: block;
  margin-top: 16px;
  margin-bottom: 6px;
  font-weight: bold;
}

input {
  width: 100%;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  font-size: 16px;
}

button {
  margin-top: 16px;
  padding: 12px 16px;
  border: none;
  border-radius: 10px;
  background: #2563eb;
  color: white;
  font-weight: bold;
  cursor: pointer;
  font-size: 15px;
}

button:hover {
  background: #1d4ed8;
}

button.danger {
  background: #dc2626;
}

button.danger:hover {
  background: #b91c1c;
}

.button-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.result {
  margin-top: 16px;
  padding: 12px;
  background: #f8fafc;
  border-radius: 10px;
  min-height: 48px;
  border: 1px solid #e2e8f0;
}

.output {
  background: #0f172a;
  color: #d1fae5;
  padding: 18px;
  border-radius: 12px;
  overflow-x: auto;
  min-height: 260px;
  margin-top: 20px;
}

.path-card {
  margin-top: 24px;
}

.path {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  font-weight: bold;
  color: #0b2559;
}

.path span {
  background: #e0ecff;
  padding: 10px 12px;
  border-radius: 10px;
}

@media (max-width: 800px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}