:root {          /*テーマ変更　ダークモード*/
  --bg-color: #ffffff;
  --text-color: #000000;
  --sub-text-color: #777777;
}

body.theme-dark {
  --bg-color: #111111;
  --text-color: #ffffff;
  --sub-text-color: #aaaaaa;
}

.theme-toggle {
  margin-left: 32px; /*ダークモードボタン位置*/  
}


body {
  margin: 0;
  font-family: system-ui, sans-serif;
  color: var(--text-color);
  background-color: var(--bg-color);
}


.header {
  display: flex;
  justify-content: space-between;
  padding: 24px 40px;
}

.logo {
  font-weight: 600;
  font-size: 1.6rem;
  text-decoration: none;
  color: var(--text-color);
}


nav a {
  margin-left: 24px;
  text-decoration: none;
  color: var(--text-color);
}


.works {
  padding: 80px 40px;
}

.works h1 {
  text-align: center;
  margin-bottom: 64px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px;
}

.card {
  text-decoration: none;
  color: var(--text-color);
}


.card img {
  width: 100%;
  height: auto;
  display: block;
}

.card h3 {
  margin: 12px 0 4px;
  font-weight: 500;
}

.meta {
  font-size: 0.85rem;
  color: var(--sub-text-color);
}


@media (max-width: 900px) {
  .cards {
    grid-template-columns: 1fr;
  }
}


/*コンタクト*/

.contact {
  padding: 80px 40px;
  max-width: 720px;
  margin: 0 auto;
}

.contact h1 {
  text-align: center;
  margin-bottom: 32px;
}

.contact p {
  margin-bottom: 32px;
}

.contact-list {
  list-style: none;
  padding: 0;
}

.contact-list li {
  margin-bottom: 16px;
}

/*フッター*/
.footer {
  padding: 40px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--sub-text-color);
}



.work img {
  max-width: 600px ;
  width: 100%;
  display: block;
  margin: 32px auto;
}

.work {
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 24px;  
}

.about {                      /*about*/
  max-width: 800px;
  margin: 0 auto;
  padding: 80px 24px;
}

.about h1 {
  font-size: 2rem;
  margin-bottom: 32px;
}

.about p {
  line-height: 1.8;
  margin-bottom: 1.5em;
}