/* ===== リセット & ベース ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #faf9f7;
  --color-white: #ffffff;
  --color-text: #3a3a3a;
  --color-text-light: #7a7a7a;
  --color-accent: #8b7355;
  --color-accent-light: #c4a882;
  --color-section-alt: #f3f0eb;
  --color-border: #e8e2d9;
  --font-serif: 'Noto Serif JP', serif;
  --font-sans: 'Noto Sans JP', sans-serif;
  --max-width: 860px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-weight: 300;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 16px;
}

/* ===== ヘッダー ===== */
.header {
  background-color: var(--color-accent);
  color: var(--color-white);
  text-align: center;
  padding: 80px 20px 70px;
}

.name {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 600;
  letter-spacing: 0.15em;
  margin-bottom: 16px;
}

.tagline {
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  opacity: 0.9;
}

/* ===== ナビゲーション ===== */
.nav {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav ul li a {
  display: block;
  padding: 16px 24px;
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transition: color 0.2s;
}

.nav ul li a:hover {
  color: var(--color-accent);
}

/* ===== セクション共通 ===== */
.section {
  padding: 80px 20px;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  text-align: center;
}

.section-subtitle {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  margin-top: 4px;
  margin-bottom: 48px;
}

/* ===== 自己紹介 ===== */
.about-content {
  max-width: 640px;
  margin: 0 auto;
}

.about-text p {
  margin-bottom: 16px;
  font-size: 0.97rem;
}

.about-text p:last-child {
  margin-bottom: 0;
}

/* ===== スキル・実績 ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  margin-bottom: 56px;
}

.skill-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 28px 20px;
  text-align: center;
}

.skill-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.skill-card h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.skill-card p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.works-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.works-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.works-list li {
  font-size: 0.93rem;
  padding-left: 20px;
  position: relative;
}

.works-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent-light);
}

/* ===== お問い合わせ ===== */
.contact-content {
  text-align: center;
  max-width: 520px;
  margin: 0 auto;
}

.contact-content p {
  font-size: 0.95rem;
  margin-bottom: 32px;
  color: var(--color-text);
}

.contact-btn {
  display: inline-block;
  background-color: var(--color-accent);
  color: var(--color-white);
  text-decoration: none;
  padding: 14px 40px;
  border-radius: 32px;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  transition: background-color 0.2s, transform 0.1s;
  margin-bottom: 16px;
}

.contact-btn:hover {
  background-color: var(--color-accent-light);
  transform: translateY(-1px);
}

.contact-note {
  font-size: 0.82rem;
  color: var(--color-text-light);
  margin-bottom: 0 !important;
}

/* ===== フッター ===== */
.footer {
  background-color: var(--color-text);
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
  padding: 28px 20px;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

/* ===== レスポンシブ ===== */
@media (max-width: 600px) {
  .header {
    padding: 60px 20px 50px;
  }

  .section {
    padding: 60px 20px;
  }

  .nav ul li a {
    padding: 14px 16px;
    font-size: 0.82rem;
  }

  .skills-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .skill-card {
    padding: 20px 14px;
  }
}

@media (max-width: 380px) {
  .skills-grid {
    grid-template-columns: 1fr;
  }
}