:root {
  --bg: #ffffff;
  --card: #ffffff;
  --text: #16324f;
  --border: #c7dcf5;
  --button: #2f7fe8;
  --button-hover: #2468bf;
  --error: #b91c1c;
}

* {
  box-sizing: border-box;
}

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

.container {
  max-width: 1200px;
  margin: 24px auto;
  padding: 0 16px 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
  box-shadow: 0 4px 14px rgba(42, 90, 153, 0.08);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.grid {
  display: grid;
  gap: 12px;
}

.inline-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  align-items: end;
}

label {
  display: grid;
  gap: 4px;
  font-size: 14px;
}

input {
  padding: 8px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

button,
.button-link {
  display: inline-block;
  padding: 8px 14px;
  background: var(--button);
  color: #fff;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  font-size: 14px;
}

button:hover,
.button-link:hover {
  background: var(--button-hover);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--border);
  padding: 8px;
  text-align: left;
  font-size: 14px;
}

.hint {
  color: #4d6a88;
  margin: 8px 0;
}

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

.hidden {
  display: none;
}

@media (max-width: 768px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  table {
    font-size: 12px;
  }
}