/* ============================================================
   Oiwa Laboratory — CSS (minimal, UnoCSS utility-first)
   Only contains: resets, element selectors, and properties
   that cannot be expressed as UnoCSS utility classes.
   ============================================================ */

/* --- Reset & Box Model --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans JP", system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: #1a1a1a;
  background: #f6f6f6;
}

/* --- Links (global element styles) --- */
a {
  color: #1a4a8a;
  text-decoration: none;
  transition: color 200ms;
}

a:hover {
  color: #0d2f5a;
  text-decoration: underline;
  font-style: normal;
}

/* --- Images --- */
img {
  max-width: 100%;
  height: auto;
}

/* --- Nav selected state (complex nested selector) --- */
#site-nav {
  text-shadow: none;
}

#nav-menu li a {
  border-bottom: 3px solid transparent;
  text-shadow: none;
}

#nav-menu li a:hover,
#nav-menu li.selected a {
  text-shadow: none;
}

/* --- Homepage Splide slider --- */
#home-splide .splide__slide img {
  width: 100%;
  height: 500px;
  object-fit: contain;
}

@media (max-width: 640px) {
  #home-splide .splide__slide img {
    height: 60vw;
    object-fit: cover;
  }
}

/* --- Equipment grid (non-utility CSS properties) --- */
#equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 24px;
}

.equipleft2 {
  aspect-ratio: 4 / 3;
}

.mouse_a img {
  backface-visibility: hidden;
}

/* --- Publication content list style --- */
#pub-content ul {
  margin-left: 1.25rem;
  list-style-type: decimal;
}

/* --- Event content list style --- */
#event-content ul {
  margin-left: 1.25rem;
  list-style-type: decimal;
}

/* --- Access list --- */
#access-main li {
  list-style: none;
}

/* --- Member table spacing --- */
#member-list li {
  list-style: none;
  margin-top: 0.5rem;
  margin-bottom: 0.5rem;
}

#member-list table {
  border-spacing: 0;
  border-collapse: separate;
  table-layout: fixed;
  width: 100%;
}

#member-list table td {
  padding: 5px 14px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

#alumni-table {
  table-layout: auto;
}

#alumni-table td {
  padding: 5px 10px;
}

/* ============================================================
   Responsive — Mobile (≤480px)
   ============================================================ */
@media (max-width: 480px) {
  /* Equipment grid — smaller columns */
  #equipment-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
  }
}