/* =========================================
   nav.css — サイト共通ナビ・フッター
   Works等の独自CSSページに読み込む用
   ========================================= */

:root {
  --color-primary:      #8B008B;
  --color-primary-dark: #6f006f;
  --color-text:         #434343;
  --color-white:        #ffffff;
  --color-divider:      #d3d3d3;
  --color-divider-lt:   #ebebeb;
  --color-accent:       #9900ff;
  --font-ui:  Lato, Arial, sans-serif;
  --font-jp:  'BIZ UDPGothic', Arial, sans-serif;
  --nav-height: 64px;
}

/* 固定ナビ分だけコンテンツを下にずらす */
body {
  padding-top: var(--nav-height);
}


/* =========================================
   NAVIGATION
   ========================================= */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: var(--color-white);
  border-bottom: 1px solid var(--color-divider);
  height: var(--nav-height);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
}

.nav-logo img {
  height: 36px;
  width: auto;
}

.nav-links,
.nav-links li,
.dropdown,
.dropdown li,
.footer-nav__list,
.footer-nav__list li {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  font-family: var(--font-ui);
  font-size: 13px;
}
.nav-links > li > a {
  display: block;
  padding: 0 14px;
  height: var(--nav-height);
  line-height: var(--nav-height);
  color: var(--color-text);
  white-space: nowrap;
  transition: color 0.2s;
}
.nav-links > li > a:hover {
  color: var(--color-primary);
}

/* Dropdown */
.has-dropdown { position: relative; }
.dropdown {
  display: none;
  position: absolute;
  top: var(--nav-height);
  left: 0;
  background: var(--color-white);
  border: 1px solid var(--color-divider);
  min-width: 160px;
  z-index: 300;
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
}
.has-dropdown:hover .dropdown { display: block; }
.dropdown li a {
  display: block;
  padding: 12px 16px;
  font-size: 13px;
  color: var(--color-text);
  transition: background 0.15s, color 0.15s;
}
.dropdown li a:hover {
  background: #f7f7f7;
  color: var(--color-primary);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 400;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.3s, opacity 0.3s;
}
.nav-hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav-hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Language switcher */
.nav-links > .nav-lang > a {
  height: auto;
  line-height: 1.2;
  padding: 5px 10px;
  border: 1px solid var(--color-divider);
  border-radius: 2px;
  font-size: 11px;
  letter-spacing: 0.08em;
  margin-left: 4px;
}
.nav-links > .nav-lang > a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}


/* =========================================
   FOOTER
   ========================================= */
.site-footer {
  background-color: #2b2b2b;
  color: var(--color-white);
  padding: 40px 40px 32px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  max-width: 1280px;
  margin: 0 auto;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.2);
  gap: 48px;
}

.footer-brand {
  flex-shrink: 0;
  text-align: center;
}
.footer-logo img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  margin: 0 auto 6px;
}
.footer-tagline {
  font-family: var(--font-jp);
  font-size: 9pt;
  color: rgba(255,255,255,0.65);
  letter-spacing: 0.1em;
}

.footer-nav__list {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 8px 40px;
  justify-content: end;
}
.footer-nav__list a {
  font-family: var(--font-jp);
  font-size: 8pt;
  color: rgba(255,255,255,0.87);
  transition: opacity 0.2s;
}
.footer-nav__list a:hover {
  opacity: 0.55;
}

.footer-copy {
  max-width: 1280px;
  margin: 0 auto;
  padding-top: 24px;
  text-align: center;
}
.footer-copy p {
  font-family: var(--font-jp);
  font-size: 9pt;
  color: rgba(255,255,255,0.55);
  line-height: 1.9;
}


/* =========================================
   RESPONSIVE — Mobile (< 768px)
   ========================================= */
@media (max-width: 767px) {

  /* Nav */
  .nav-hamburger { display: flex; }
  .nav-links {
    display: none;
    flex-direction: column;
    align-items: stretch;
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-divider);
    box-shadow: 0 4px 16px rgba(0,0,0,.1);
    overflow-y: auto;
    max-height: calc(100vh - var(--nav-height));
  }
  .nav-links.is-open { display: flex; }
  .nav-links > li > a {
    height: auto;
    line-height: normal;
    padding: 16px 24px;
    border-bottom: 1px solid var(--color-divider-lt);
  }
  .has-dropdown .dropdown {
    display: block;
    position: static;
    border: none;
    border-top: 1px solid var(--color-divider-lt);
    background: #f8f8f8;
    box-shadow: none;
    min-width: unset;
  }
  .dropdown li a {
    padding-left: 40px;
  }

  /* Footer */
  .site-footer       { padding: 48px 24px 24px; }
  .footer-inner      { flex-direction: column; gap: 32px; padding-bottom: 32px; }
  .footer-nav__list  { justify-content: flex-start; gap: 10px 24px; }
}