/* =========================
   TAB NAV
========================= */
.tab-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--light-bg);
  gap: 12px;
}

.nav-arrow {
  background: none;
  border: none;
  font-size: 1.6rem;
  cursor: pointer;
  color: var(--base);
}

.tab-nav-scroll {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  padding: 15px 0;
  user-select: none;
  scrollbar-width: auto;
  scrollbar-color: var(--base) var(--light-bg);
}

.tab-nav-scroll-button {
  color: var(--text-bg-white);
  cursor: pointer;
  transition: 0.1s;
  min-width: 120px;
  text-align: center;
  font-weight: 700;
}

.tab-nav-scroll-button.active {
  color: var(--accent);
}

.tab-nav-scroll-i {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-weight: 400;
}

.tab-nav-scroll-i i {
  font-size: 1.8rem;
  margin-bottom: 5px;
}

@media (pointer: coarse) {
  .nav-arrow {
    display: none;
  }

  .tab-nav-scroll {
    scrollbar-width: none;
    animation: scroll-shadow;
    animation-timeline: scroll(self x);
  }
}

@keyframes scroll-shadow {
  0% {
    box-shadow: inset -8dvw 0 8dvw -8dvw rgba(0, 0, 0, 0.8);
  }

  10%, 90% {
    box-shadow: inset -5dvw 0 5dvw -5dvw rgba(0, 0, 0, 0.6), inset 5dvw 0 5dvw -5dvw rgba(0, 0, 0, 0.6);
  }

  100% {
    box-shadow: inset 8dvw 0 8dvw -8dvw rgba(0, 0, 0, 0.8);
  }
}

/* =========================
   TAB NAV CONTENTS
========================= */
main {
  display: flex;
}

.tab-nav-content {
  display: none;
  background-color: var(--bg-base);
  padding: 50px 0;
  width: 100%;
}

.tab-nav-content.active {
  display: block;
}

.group-content {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  margin-top: 1.5rem;
}

.group-text {
  flex: 1;
  min-width: 0;
}

.group-text p {
  line-height: 1.6;
  margin: 6px 0;
  text-indent: 1em;
}

.group-text p:first-of-type {
  margin-top: 1em;
}

.group-text p:last-of-type {
  margin-bottom: 1em;
}

.group-image {
  flex: 0 0 45%;
  max-width: 45%;
  border-radius: 8px;
  overflow: hidden;
}

.group-image img {
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 8px;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .group-content {
    flex-direction: column;
  }

  .group-image {
    flex: 0 0 100%;
    max-width: 100%;
  }
}