:root {
  --bg: #f5f5f5;
  --card-bg: #ffffff;
  --border: #ddd;
  --primary: #324960;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    Arial, "Microsoft JhengHei", sans-serif;
  padding: 16px;
  margin: 0;
  background-color: var(--bg);
}

.top-bar {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 10px;
}

.top-title {
  font-size: 1.2rem;
  font-weight: 600;
}

.top-meta {
  font-size: 0.85rem;
  color: #666;
}

#lastUpdate {
  font-size: 0.85rem;
  color: #444;
}

.status {
  font-size: 0.8rem;
  color: #888;
}

.status span.connected {
  color: green;
}

.status span.disconnected {
  color: red;
}

#errorBox {
  margin: 4px 0;
  color: #d32f2f;
  font-size: 0.85rem;
  min-height: 1em;
}

.card {
  background-color: var(--card-bg);
  border-radius: 8px;
  padding: 12px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border);
}

.code-input-container {
  margin-bottom: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.code-input-container label {
  font-size: 0.9rem;
}

.code-input-container input {
  padding: 6px 8px;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  font-size: 0.95rem;
}

.code-input-container button {
  padding: 6px 10px;
  font-size: 0.9rem;
  cursor: pointer;
  border-radius: 4px;
  border: 1px solid var(--primary);
  background-color: var(--primary);
  color: #fff;
  align-self: flex-start;
}

.code-input-container button:active {
  opacity: 0.8;
}

.hint {
  font-size: 0.75rem;
  color: #777;
}

.table-wrapper {
  width: 100%;
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 720px;
  margin-top: 6px;
  font-size: 0.9rem;
}

th,
td {
  border: 1px solid #ccc;
  padding: 6px 4px;
  text-align: center;
  white-space: nowrap;
}

th {
  background: var(--primary);
  color: #fff;
}

tr:nth-child(even) {
  background: #f8f8f8;
}

.price-cell {
  transition: color 0.3s ease;
}

.up {
  color: red;
}
.down {
  color: green;
}
.flat {
  color: black;
}

.flash {
  animation: flashAnim 0.5s ease-out;
}
@keyframes flashAnim {
  0% {
    background-color: #ffe58f;
  }
  100% {
    background-color: transparent;
  }
}

@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  .top-title {
    font-size: 1.05rem;
  }
  table {
    font-size: 0.8rem;
    min-width: 640px;
  }
  th,
  td {
    padding: 4px 3px;
  }
}