/* ===== 変数 ===== */
:root {
  --bg:         #edf4fb;
  --bg-alt:     #d0e6f7;
  --accent:     #3a7abf;
  --accent-dark:#2a5f9a;
  --text:       #1a3a5c;
  --card-bg:    #ffffff;
  --border:     #b8d4ef;
  --font-serif: 'Hiragino Mincho ProN', 'Yu Mincho', Georgia, serif;
  --font-sans:  -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --nav-h:      60px;
}

/* ===== リセット ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html  { scroll-behavior: smooth; }
img   { display: block; max-width: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-serif);
  line-height: 1.8;
  font-size: 15px;
}

/* ===== ナビゲーション ===== */
#header {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(237, 244, 251, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.nav__logo {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 16px;
  color: var(--accent-dark);
  letter-spacing: 0.06em;
  flex-shrink: 0;
}

.nav__links {
  display: flex;
  gap: 20px;
  list-style: none;
}

.nav__link {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.04em;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}
.nav__link:hover,
.nav__link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ハンバーガーボタン（スマホ用） */
.nav__menu-btn {
  display: none;
  align-items: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 12px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text);
  transition: border-color 0.2s;
}
.nav__menu-btn:hover { border-color: var(--accent); color: var(--accent); }

.menu-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 16px;
  pointer-events: none;
}
.menu-icon span {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.menu-text   { pointer-events: none; }
.menu-arrow  { display: inline-block; transition: transform 0.25s; pointer-events: none; }
.nav__menu-btn.open .menu-arrow { transform: rotate(180deg); }

/* ドロップダウン */
.nav__dropdown {
  display: none;
  flex-direction: column;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 6px 16px rgba(26, 58, 92, 0.1);
}
.nav__dropdown.open { display: flex; }

.dropdown__link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 24px;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.dropdown__link:last-child { border-bottom: none; }
.dropdown__link:hover { background: var(--bg-alt); }

.dropdown__num {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  min-width: 22px;
  letter-spacing: 0.05em;
}

/* ===== セクション共通 ===== */
.section {
  padding: 88px 0;
  scroll-margin-top: var(--nav-h);
}
.section--alt { background: var(--bg-alt); }

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

.section__title {
  font-size: 22px;
  font-weight: normal;
  color: var(--text);
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.section__num {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
}

/* ===== ボタン ===== */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 14px;
  padding: 12px 32px;
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  border: 2px solid transparent;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn--primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}
.btn--outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn--outline:hover {
  background: var(--accent);
  color: #fff;
}

/* ===== ヒーロー ===== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(150deg, var(--bg) 0%, var(--bg-alt) 100%);
}
.hero__inner { padding: 20px; }

.hero__subtitle {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 18px;
}
.hero__name {
  font-size: clamp(30px, 6vw, 54px);
  font-weight: normal;
  color: var(--text);
  letter-spacing: 0.12em;
  margin-bottom: 20px;
}
.hero__catch {
  font-size: 16px;
  color: var(--text);
  opacity: 0.75;
  margin-bottom: 36px;
}
.hero__btns {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 自己紹介 ===== */
.about__content {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 48px;
  align-items: start;
}
.about__text {
  padding-top: 32px;
}
.about__text p { margin-bottom: 16px; }

.about__side {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  margin-top: -32px;
}

.about__list {
  list-style: none;
  margin-top: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0;
}
.about__list li {
  display: flex;
  gap: 16px;
  font-size: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}
.about__label {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--accent);
  min-width: 70px;
  flex-shrink: 0;
  padding-top: 2px;
}

.about__image { display: flex; justify-content: center; }
.about__avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--border);
}
.about__avatar picture,
.about__avatar img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  mix-blend-mode: multiply;
  transform: scale(1.1);
  transform-origin: 50% 25%;
}

/* ===== 得意分野 ===== */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.skill__card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}
.skill__icon   { font-size: 28px; margin-bottom: 12px; }
.skill__title  { font-size: 16px; font-weight: normal; color: var(--accent-dark); margin-bottom: 10px; }
.skill__desc   { font-size: 13px; line-height: 1.7; margin-bottom: 16px; }
.skill__tags   { display: flex; flex-wrap: wrap; gap: 6px; }

.tag {
  font-family: var(--font-sans);
  font-size: 11px;
  padding: 3px 10px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--accent-dark);
}

/* ===== 仕事スタイル ===== */
.workstyle__list { display: flex; flex-direction: column; gap: 16px; }

.workstyle__item {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px 28px;
}
.workstyle__num {
  font-family: var(--font-sans);
  font-size: 28px;
  font-weight: 700;
  color: var(--border);
  line-height: 1;
  min-width: 44px;
  flex-shrink: 0;
}
.workstyle__title { font-size: 16px; font-weight: normal; color: var(--accent-dark); margin-bottom: 8px; }
.workstyle__desc  { font-size: 14px; }

/* ===== 作品紹介 ===== */
.works__tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
}
.tab {
  font-family: var(--font-sans);
  font-size: 13px;
  padding: 7px 20px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.tab:hover        { border-color: var(--accent); color: var(--accent); }
.tab.active       { background: var(--accent); border-color: var(--accent); color: #fff; }

.works__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.work__card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.work__card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(58, 122, 191, 0.14);
}

.work__thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--bg-alt) 0%, #c4dcf4 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.work__thumb picture { display: block; width: 100%; height: 100%; }
.work__thumb img { width: 100%; height: 100%; object-fit: cover; }
.work__thumb-label {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.05em;
}

.work__info    { padding: 14px 16px; }
.work__title   { font-size: 14px; margin-bottom: 8px; }
.work__tags    { display: flex; flex-wrap: wrap; gap: 5px; }
.work__link {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  color: #9b59d6;
  text-decoration: underline;
  font-weight: bold;
}
.work__link:hover { text-decoration: underline; }

.contact__link {
  color: var(--accent);
  text-decoration: none;
  font-size: 13px;
}
.contact__link:hover { text-decoration: underline; }
.work__note {
  font-size: 12px;
  color: var(--text);
  margin-top: 8px;
  line-height: 1.6;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

.work__note--caution {
  border-top: none;
  color: var(--text-sub, #888);
  margin-top: 6px;
  padding-top: 0;
}

.works__more   { text-align: center; margin-top: 28px; }

/* ===== 将来の方向性 ===== */
.future__lead {
  font-size: 20px;
  text-align: center;
  line-height: 1.7;
  color: var(--accent-dark);
  margin-bottom: 40px;
}
.future__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.future__item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 24px;
}
.future__item-title {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}
.future__item p { font-size: 13px; line-height: 1.85; }

/* ===== モーダル ===== */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal.open { display: flex; }

.modal__overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 58, 92, 0.55);
  backdrop-filter: blur(3px);
}
.modal__content {
  position: relative;
  z-index: 1;
  background: var(--card-bg);
  border-radius: 12px;
  width: min(90vw, 980px);
  max-height: 82vh;
  overflow-y: auto;
  padding: 32px;
}
.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.modal__title  { font-size: 18px; font-weight: normal; }
.modal__close  {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 20px;
  cursor: pointer;
  color: var(--text);
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.15s, color 0.15s;
}
.modal__close:hover { background: var(--bg-alt); color: var(--accent); }

/* ===== フッター ===== */
.footer {
  background: var(--text);
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 24px;
}
.footer__text { font-family: var(--font-sans); font-size: 12px; }

/* ===== レスポンシブ ===== */

/* タブレット（769px〜1024px） */
@media (min-width: 769px) and (max-width: 1024px) {
  .works__grid,
  .skills__grid,
  .future__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* スマホ（〜768px） */
@media (max-width: 768px) {
  .nav__links    { display: none; }
  .nav__menu-btn { display: flex; }

  .section { padding: 60px 0; }
  .section__title { font-size: 18px; }

  .about__content {
    grid-template-columns: 1fr;
  }
  .about__side { order: -1; }

  .skills__grid,
  .works__grid,
  .future__grid {
    grid-template-columns: 1fr;
  }

  .future__lead { font-size: 16px; }

  .workstyle__item { padding: 20px; }
  .workstyle__num  { font-size: 22px; min-width: 36px; }

  .modal__content { padding: 20px; }
}