/* ===== 色と基本設定 ===== */
:root {
  --navy: #1f2d4d;
  --navy-dark: #16213a;
  --navy-light: #e9edf5;
  --white: #ffffff;
  --text: #1f2d4d;
  --text-sub: #4a5672;
  --line: #d5dbe8;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", Meiryo, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--white);
  -webkit-text-size-adjust: 100%;
}

h1, h2, h3, p, ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
}

.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== ボタン ===== */
.btn {
  display: inline-block;
  padding: 12px 16px;
  border-radius: 6px;
  white-space: nowrap; /* ボタンの文字を途中で折り返さない */
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  border: 2px solid var(--white);
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.85;
}

.btn-light {
  background: var(--white);
  color: var(--navy);
}

.btn-outline {
  background: transparent;
  color: var(--white);
}

.btn-wide {
  display: block;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  font-size: 1.1rem;
  padding: 16px 24px;
  white-space: normal;
  line-height: 1.5;
}

.btn-sub {
  display: block;
  font-size: 0.95rem;
}

/* ===== ヘッダー ===== */
.hero {
  background: var(--navy);
  color: var(--white);
  padding: 56px 0 48px;
  text-align: center;
}

.hero-photo {
  display: block;
  width: 112px;
  height: 112px;
  margin: 0 auto 20px;
  border-radius: 50%;
  object-fit: cover;
  object-position: 60% center;
  border: 3px solid var(--white);
}

.hero-name {
  line-height: 1.5;
}

.hero-greet {
  display: block;
  font-size: 1rem;
  font-weight: 400;
}

.hero-fullname {
  display: block;
  font-size: 1.8rem;
}

.hero-catch {
  margin-top: 16px;
  font-size: 1.05rem;
}

.hero-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.hero-nav .btn {
  flex: 1;
}

/* ===== セクション共通 ===== */
.section {
  padding: 56px 0;
}

.section-alt {
  background: var(--navy-light);
}

.section-title {
  font-size: 1.3rem;
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--navy);
  display: inline-block;
}

/* ===== できること ===== */
.skills {
  display: grid;
  gap: 16px;
}

.skill {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.skill-num {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-sub);
}

.skill-name {
  font-size: 1.15rem;
  margin-top: 4px;
}

.skill-text {
  margin-top: 4px;
  color: var(--text-sub);
}

/* ===== 自己紹介 ===== */
.about p + p {
  margin-top: 16px;
}

.about-motto {
  font-size: 1.1rem;
}

/* ===== 作ったもの ===== */
.works {
  display: grid;
  gap: 16px;
}

.work {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.works-empty {
  text-align: center;
  color: var(--text-sub);
}

.work-name {
  font-size: 1.1rem;
}

.work-text {
  margin-top: 4px;
  color: var(--text-sub);
}

.work-link {
  display: inline-block;
  margin-top: 8px;
  font-weight: 700;
}

/* ===== 連絡先 ===== */
.section-contact {
  background: var(--navy);
  color: var(--white);
  text-align: center;
}

.section-contact .section-title {
  border-bottom-color: var(--white);
}

/* ===== フッター ===== */
.footer {
  background: var(--navy-dark);
  color: var(--white);
  text-align: center;
  padding: 16px 0;
}

/* ===== PC表示 ===== */
@media (min-width: 768px) {
  .hero {
    padding: 96px 0 80px;
  }

  .hero-photo {
    width: 144px;
    height: 144px;
  }

  .hero-fullname {
    font-size: 2.4rem;
  }

  .hero-nav .btn {
    flex: 0 0 auto;
    min-width: 160px;
  }

  .skills {
    grid-template-columns: repeat(3, 1fr);
  }
}