/* Clean Blog Style for ARG Site Phase 1 */
:root {
  --bg: #ffffff;
  --fg: #333333;
  --primary: #0056b3;
  --accent: #e63946;
  --muted: #666666;
  --border: #dddddd;
  --maxw: 900px;
}

body {
  font-family: "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  margin: 0;
  padding: 0;
}

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px;
}

header {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
  margin-bottom: 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.5rem;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 1px;
}

nav a {
  margin-left: 15px;
  color: var(--fg);
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  color: var(--primary);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}

h2 {
  font-size: 1.8rem;
  margin-top: 30px;
  border-bottom: 2px solid var(--primary);
  padding-bottom: 5px;
}

p {
  margin-bottom: 15px;
}

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 10px 20px;
  border-radius: 5px;
  text-decoration: none;
  margin-top: 20px;
}

.btn:hover {
  background: #004494;
}

footer {
  margin-top: 50px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.clue-header {
  font-size: 0.8rem;
  color: #ccc;
  /* user-select: none; removed to allow copy paste */
  cursor: text;
}

@media (max-width: 600px) {
  .container {
    padding: 15px;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 20px;
  }

  .brand {
    margin-bottom: 15px;
    font-size: 1.2rem;
  }

  nav {
    display: flex;
    flex-direction: column;
    width: 100%;
  }

  nav a {
    margin-left: 0;
    margin-bottom: 10px;
    display: block;
    padding: 5px 0;
    border-bottom: 1px solid #eee;
  }

  h1 {
    font-size: 1.8rem;
  }

  h2 {
    font-size: 1.4rem;
  }
}

/* ヘッダーにロゴを追加して、brandを右へ */
.siteHeader{
  display: flex;
  align-items: center;
  gap: 12px;
}

.siteHeader__logoLink{
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  flex: 0 0 auto;
}

.siteHeader__logo{
  height: 38px; /* 好みで調整 */
  width: auto;
  display: block;
}

/* ナビを右側に寄せたい場合 */
.siteHeader nav{
  margin-left: auto;
}