/* ===== 共通 ===== */
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
               "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  margin: 10px;
  background: #f5f6f8;
  color: #333;
}

header h1 {
  font-size: 1.6rem;
  margin-bottom: 0.2em;
}

.subtitle {
  font-size: 1rem;
  color: #555;
  margin-bottom: 20px;
}

/* ===== メニュー ===== */
.menu {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.menu-item {
  display: inline-block;
  padding: 8px 12px;
  background: #1976d2;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
  transition: background 0.3s;
}

.menu-item:hover {
  background: #115293;
}

/* ===== セクション ===== */
.section {
  background: #fff;
  padding: 15px 20px;
  margin-bottom: 20px;
  border-radius: 5px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

/* ===== フォーム ===== */
.date-form {
  margin: 10px 0 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.date-form input[type="date"] {
  padding: 6px;
  font-size: 1rem;
  border-radius: 4px;
  border: 1px solid #ccc;
}

.date-form input[type="submit"] {
  padding: 6px 12px;
  font-size: 1rem;
  background: #1976d2;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}

.date-form input[type="submit"]:hover {
  background: #115293;
}

/* ===== テーブル ===== */
.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
  background: #444;
}

th, td {
  padding: 6px 8px;
  border: 1px solid #ccc;
  text-align: right;
  font-size: 0.9rem;
}

th {
  background: #e9eef3;
  text-align: center;
}

td:nth-child(3) {
  text-align: left;  /* 企業名 */
}

.rate {
  font-weight: bold;
}

/* ===== フッター ===== */
footer {
  text-align: center;
  font-size: 0.85rem;
  color: #777;
  margin-top: 30px;
}

/* ===== レスポンシブ ===== */
@media (max-width: 768px) {
  .menu {
    flex-direction: column;
  }

  .date-form input[type="submit"] {
    width: 100%;
  }
}