/* -------------------------------
   Base Styles
--------------------------------- */
body {
  font-family: "Yu Mincho", sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f5f5f5;
  color: #333;
}

/* -------------------------------
   Layout: Header, Nav, Main, Footer
--------------------------------- */
header {
  background-color: #ffffff;
  color: white;
  padding: 1em;
  text-align: center;
}

nav {
  background-color: #00796b;
  text-align: center;
  padding: 0.5em;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

nav a {
  color: white;
  margin: 0.5em 1em;
  text-decoration: none;
  font-weight: bold;
  display: inline-block;
}

nav a:hover {
  text-decoration: underline;
}

main {
  max-width: 1200px;
  margin: auto;
  padding: 1.5em;
  background-color: white;
}


section {
  margin-bottom: 2em;
}

footer {
  background-color: #004d40;
  color: white;
  text-align: center;
  padding: 1em;
  font-size: 0.9em;
}

footer p {
  margin: 0.5em 0;
  line-height: 1.5;
}

/* -------------------------------
   Logo Design
--------------------------------- */
header img {
  max-width: 600px;
  width: 100%;
  height: auto;
  margin-bottom: 0.5em;
}

main section img {
  width: 100%;
  height: auto;
  margin-bottom: 1em;
}


/* -------------------------------
   メンバー内ジャンプボタン
--------------------------------- */
.member-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1em;
  margin-bottom: 2em;
}

/* -------------------------------
   Components: Cards, Buttons, Calendar
--------------------------------- */

/* Member Card */
.member-card {
  display: flex;
  align-items: flex-start;
  gap: 1em;
  margin: 1em 0;
  padding: 1em;
  border-radius: 8px;
  background-color: #f9f9f9;
  border: 1px solid #ddd;
}

.member-photo {
  width: 120px;
  height: 120px;
  border-radius: 8px;
  object-fit: cover;
}

.member-info {
  flex: 1;
}

/* Link Card */
.link-card {
  display: flex;
  align-items: center;
  gap: 1em;
  margin: 1em 0;
  padding: 1em;
  border-radius: 8px;
  background-color: #f0f0f0;
}

.link-card .icon {
  width: 48px;
  height: 48px;
}

/* Button Style */
a.button {
  display: inline-block;
  background-color: #00796b;
  color: white;
  padding: 0.5em 1em;
  margin-top: 0.5em;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
  transition: background-color 0.2s;
}

a.button:hover {
  background-color: #004d40;
}

/* Calendar Container */
.calendar-container {
  margin-top: 1em;
}

/* -------------------------------
   Responsive Styles
--------------------------------- */
@media (max-width: 600px) {
  header img {
    max-width: 300px;
  }
  nav {
    flex-direction: column;
    align-items: center;
  }

  nav a {
    margin: 0.5em 0;
  }

  main {
    padding: 1em;
  }

  header h1 {
    font-size: 1.4em;
  }

  section h2 {
    font-size: 1.2em;
  }

  footer {
    font-size: 0.8em;
  }

  .member-card {
    flex-direction: column;
    align-items: center;
    padding: 1em;
  }

  .member-photo {
    width: 100px;
    height: 100px;
  }

  .member-info {
    text-align: left;
  }

  .link-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .link-card .icon {
    width: 40px;
    height: 40px;
  }
}