/* ════════════════════
   michitake — style.css
════════════════════ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green:    #2e7d52;
  --green-d:  #1e5c3a;
  --green-l:  #e8f5ee;
  --gold:     #c8952a;
  --text:     #1a1a1a;
  --muted:    #666;
  --border:   #ddd;
  --white:    #ffffff;
  --bg:       #f8faf8;
  --ff-jp:    'Noto Sans JP', sans-serif;
  --ff-serif: 'Noto Serif JP', serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--ff-jp);
  font-weight: 300;
  color: var(--text);
  background: var(--white);
  line-height: 1.8;
  overflow-x: hidden;
}

/* ════ NAV ════ */
nav {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  border-bottom: 2px solid var(--green);
  display: flex; align-items: center; justify-content: space-between;
  padding: .8rem 2rem;
  box-shadow: 0 1px 6px rgba(0,0,0,.06);
}
.nav-logo img {
  height: 40px;
  display: block;
}
.nav-links {
  display: flex; list-style: none; gap: 1.8rem;
}
.nav-links a {
  text-decoration: none;
  font-size: .82rem; font-weight: 500;
  color: var(--text);
  transition: color .2s;
}
.nav-links a:hover { color: var(--green); }

/* ════ HERO ════ */
.hero {
  background: var(--green-d);
  min-height: 88svh;
  display: flex; align-items: center;
  padding: 6rem 2rem 4rem;
  position: relative; overflow: hidden;
}
.hero-dots {
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 36px 36px;
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: 700px; margin: 0 auto; text-align: center;
}
.hero-logo {
  height: 80px; margin: 0 auto 2rem;
  display: block;
  filter: brightness(0) invert(1);
}
.hero-copy {
  font-family: var(--ff-serif);
  font-size: clamp(1.8rem, 6vw, 3.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.4;
  margin-bottom: 1rem;
  letter-spacing: .06em;
}
.hero-copy .accent { color: #7ec8a0; }
.hero-sub {
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  margin-bottom: 2.5rem;
  line-height: 2;
}
.hero-btn {
  display: inline-block;
  background: var(--white); color: var(--green-d);
  padding: .9rem 2.4rem;
  font-size: .85rem; font-weight: 700; letter-spacing: .05em;
  text-decoration: none;
  border-radius: 2px;
  transition: background .2s, transform .2s;
}
.hero-btn:hover { background: #e0f0e8; transform: translateY(-2px); }

/* ════ SECTION ════ */
.sec { padding: 5rem 2rem; }
.sec.bg { background: var(--bg); }
.sec-inner { max-width: 900px; margin: 0 auto; }
.sec-label {
  font-size: .7rem; font-weight: 700;
  letter-spacing: .3em; text-transform: uppercase;
  color: var(--green);
  display: flex; align-items: center; gap: .6rem;
  margin-bottom: .5rem;
}
.sec-label::before { content: ''; display: inline-block; width: 1.5rem; height: 2px; background: var(--green); }
.sec-title {
  font-family: var(--ff-serif);
  font-size: clamp(1.3rem, 3.5vw, 1.9rem);
  font-weight: 700; color: var(--green-d);
  margin-bottom: 1.5rem;
}
.sec-lead { font-size: .88rem; color: var(--muted); margin-bottom: 2rem; line-height: 2; }

/* ════ ABOUT ════ */
.about-body { font-size: .9rem; color: #3a4a3a; line-height: 2.2; }
.about-body p { margin-bottom: 1rem; }
.about-body strong { color: var(--green-d); font-weight: 700; }

.values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1px; background: var(--border);
  border: 1px solid var(--border);
  margin-top: 2rem;
}
.value-item {
  background: var(--white);
  padding: 1.5rem;
  transition: background .2s;
}
.value-item:hover { background: var(--green-l); }
.value-num {
  font-size: 1.8rem; font-weight: 700;
  color: var(--green); opacity: .2; line-height: 1;
  margin-bottom: .3rem;
}
.value-title { font-size: .95rem; font-weight: 700; color: var(--green-d); margin-bottom: .3rem; }
.value-desc { font-size: .78rem; color: var(--muted); line-height: 1.8; }

/* ════ ACTIVITIES ════ */
.act-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px; background: var(--border);
  border: 1px solid var(--border);
}
.act-item {
  background: var(--white);
  padding: 1.8rem 2rem;
  display: flex; gap: 1.5rem; align-items: flex-start;
  transition: background .2s;
}
.act-item:hover { background: var(--green-l); }
.act-num {
  font-size: 1.8rem; font-weight: 700;
  color: var(--green); opacity: .2;
  line-height: 1; min-width: 2.5rem;
}
.act-title { font-size: .95rem; font-weight: 700; color: var(--green-d); margin-bottom: .4rem; }
.act-desc { font-size: .8rem; color: var(--muted); line-height: 1.9; }
.act-badge {
  display: inline-block;
  font-size: .62rem; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  background: var(--green); color: var(--white);
  padding: .15rem .6rem; margin-bottom: .5rem;
  border-radius: 2px;
}

/* ════ PROFILE ════ */
.profile-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--green);
  padding: 2rem;
  display: flex; gap: 2rem; align-items: flex-start;
}
.profile-avatar {
  width: 72px; height: 72px; border-radius: 50%; flex-shrink: 0;
  background: var(--green-d);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--ff-serif); font-size: 1.5rem; color: var(--white); font-weight: 700;
}
.profile-name { font-size: 1.1rem; font-weight: 700; color: var(--green-d); margin-bottom: .15rem; }
.profile-en { font-size: .72rem; color: var(--muted); letter-spacing: .1em; margin-bottom: .8rem; }
.profile-role {
  font-size: .65rem; font-weight: 700; letter-spacing: .15em; text-transform: uppercase;
  color: var(--green); margin-bottom: .3rem;
}
.profile-desc { font-size: .82rem; color: #444; line-height: 2; }

/* ════ CONTACT ════ */
.contact-cta {
  background: var(--green-d);
  padding: 5rem 2rem;
  text-align: center;
  color: var(--white);
}
.contact-cta .sec-label { justify-content: center; color: rgba(255,255,255,.5); }
.contact-cta .sec-label::before { background: rgba(255,255,255,.4); }
.contact-cta .sec-title { color: var(--white); text-align: center; }
.contact-desc { font-size: .88rem; color: rgba(255,255,255,.7); margin-bottom: 2rem; line-height: 2; }
.contact-email {
  display: inline-block;
  border: 1.5px solid rgba(255,255,255,.5);
  color: var(--white);
  padding: .9rem 2.4rem;
  text-decoration: none;
  font-size: .85rem; font-weight: 500; letter-spacing: .05em;
  border-radius: 2px;
  transition: background .2s, border-color .2s;
}
.contact-email:hover { background: rgba(255,255,255,.1); border-color: var(--white); }

/* ════ FOOTER ════ */
footer {
  background: #0f3d22;
  padding: 2.5rem 2rem;
  color: rgba(255,255,255,.5);
  text-align: center;
}
.footer-logo { height: 32px; margin: 0 auto .8rem; display: block; filter: brightness(0) invert(1); opacity: .6; }
.footer-links { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 1rem; }
.footer-links a { color: rgba(255,255,255,.5); text-decoration: none; font-size: .75rem; transition: color .2s; }
.footer-links a:hover { color: var(--white); }
.footer-copy { font-size: .68rem; letter-spacing: .05em; }

/* ════ DESKTOP ════ */
@media (min-width: 768px) {
  nav { padding: .8rem 4rem; }
  .sec { padding: 6rem 4rem; }
  .hero { padding: 8rem 4rem 6rem; }
  .act-grid { grid-template-columns: 1fr 1fr; }
  .contact-cta { padding: 6rem 4rem; }
}