:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #17202a;
  --muted: #6b7280;
  --border: #d8dee6;
  --accent: #0b6bcb;
  --error: #b00020;
  --ok: #166534;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
}

.panel {
  width: 100%;
  max-width: 760px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
}

.header {
  margin-bottom: 18px;
}

.header h1 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.2;
}

.header p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
}

label,
.label {
  font-weight: 600;
  color: #374151;
}

select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font-size: 1rem;
}

.status {
  min-height: 22px;
  margin: 10px 0 14px;
  color: var(--muted);
  font-size: 0.92rem;
}

.status.error {
  color: var(--error);
  font-weight: 600;
}

.status.ok {
  color: var(--ok);
}

.resultCard {
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.hidden {
  display: none;
}

h2 {
  margin: 0 0 12px;
  font-size: 1.25rem;
  color: var(--accent);
}

h3 {
  margin: 18px 0 8px;
  font-size: 1rem;
}

.infoLine {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid #eef1f4;
}

.tableWrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.96rem;
}

th,
td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid #eef1f4;
}

th {
  background: #f8fafc;
  color: #374151;
}

tbody tr:last-child td {
  border-bottom: none;
}

.dimensions {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.dimensions div {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: #f8fafc;
}

.dimensions span {
  display: block;
}

.dimensions .label {
  font-size: 0.86rem;
  margin-bottom: 4px;
}

@media (max-width: 620px) {
  .app {
    padding: 12px;
  }

  .panel {
    padding: 16px;
  }

  .infoLine {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .dimensions {
    grid-template-columns: 1fr;
  }
}