/* ============================================
   Kiwada Theme - Home Page Styles
   ============================================ */

/* ============================================
   アニメーション共通
   ============================================ */
.js-slide-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.js-stagger {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.is-visible .js-slide-up,
.is-visible .js-stagger {
    opacity: 1;
    transform: translateY(0);
}

.is-visible .js-stagger:nth-child(1)  { transition-delay: 0.0s; }
.is-visible .js-stagger:nth-child(2)  { transition-delay: 0.1s; }
.is-visible .js-stagger:nth-child(3)  { transition-delay: 0.2s; }
.is-visible .js-stagger:nth-child(4)  { transition-delay: 0.3s; }
.is-visible .js-stagger:nth-child(5)  { transition-delay: 0.4s; }
.is-visible .js-stagger:nth-child(6)  { transition-delay: 0.5s; }
.is-visible .js-stagger:nth-child(7)  { transition-delay: 0.6s; }
.is-visible .js-stagger:nth-child(8)  { transition-delay: 0.7s; }
.is-visible .js-stagger:nth-child(9)  { transition-delay: 0.8s; }
.is-visible .js-stagger:nth-child(10) { transition-delay: 0.9s; }

/* ============================================
   共通 セクション見出し
   ============================================ */
.section-heading {
    text-align: center;
    letter-spacing: 0.35em;
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    margin-bottom: 5rem;
}

@media (min-width: 768px) {
    .section-heading {
        margin-bottom: 7rem;
    }
}

/* もっと見るボタン */
.section-more {
    text-align: center;
    margin-top: 4rem;
}

.btn-outline {
    display: inline-block;
    font-size: 10px;
    letter-spacing: 0.35em;
    font-weight: 300;
    border: 1px solid var(--color-foreground);
    padding: 1.25rem 4rem;
    transition: background-color var(--transition-slow), color var(--transition-slow);
}

.btn-outline:hover {
    background-color: var(--color-foreground);
    color: var(--color-background);
}

/* ============================================
   1. Hero Section
   ============================================ */
.hero-section {
    position: relative;
    width: 100%;
    height: 100svh;
    overflow: hidden;
}

.hero-section__media {
    width: 100%;
    height: 100%;
    transition: transform 2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    transform: scale(1.1);
}

.hero-section__media.is-loaded {
    transform: scale(1);
}

.hero-section__video,
.hero-section__fallback {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-section__overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.3);
}

/* ============================================
   2. Brand Concept
   ============================================ */
.brand-concept {
    padding-block: 4rem;
}

@media (min-width: 768px) {
    .brand-concept { padding-block: 6rem; }
}

@media (min-width: 1024px) {
    .brand-concept { padding-block: 8rem; }
}

.brand-concept__inner {
    max-width: 56rem;
    margin-inline: auto;
    padding-inline: var(--container-px);
    text-align: center;
}

.brand-concept__text {
    font-size: 0.75rem;
    letter-spacing: 0.03em;
    line-height: 1.625;
    font-weight: 300;
    color: var(--color-neutral-600);
}

.brand-concept__text .js-stagger {
    display: block;
    margin-bottom: 1rem;
}

.brand-concept__break {
    display: none;
}

@media (min-width: 768px) {
    .brand-concept__text {
        font-size: 0.875rem;
        letter-spacing: 0.1em;
        line-height: 2;
    }

    .brand-concept__text .js-stagger {
        display: inline;
        margin-bottom: 0;
    }

    .brand-concept__break {
        display: block;
    }
}

@media (min-width: 1024px) {
    .brand-concept__text {
        font-size: 1rem;
        letter-spacing: 0.2em;
    }
}

/* ============================================
   3. Product Lines
   ============================================ */
.product-lines {
    padding-block: 6rem;
    background-color: var(--color-neutral-100);
}

@media (min-width: 768px) {
    .product-lines { padding-block: 8rem; }
}

.product-lines__inner {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-px);
}

.product-lines__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .product-lines__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 2rem;
    }
}

@media (min-width: 1024px) {
    .product-lines__grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.product-line-card {
    display: block;
}

.product-line-card__image {
    aspect-ratio: 1;
    background-color: var(--color-white);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.product-line-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s ease;
}

.product-line-card:hover .product-line-card__image img {
    transform: scale(1.05);
}

.product-line-card__name {
    text-align: center;
    font-size: 0.875rem;
    letter-spacing: 0.25em;
    font-weight: 300;
    margin-bottom: 0.5rem;
    transition: opacity var(--transition-base);
}

.product-line-card:hover .product-line-card__name {
    opacity: 0.5;
}

.product-line-card__desc {
    text-align: center;
    font-size: 10px;
    letter-spacing: 0.15em;
    color: var(--color-neutral-600);
    font-weight: 300;
}

/* ============================================
   4. Instagram Feed
   ============================================ */
.instagram-section {
    padding-block: 6rem;
}

@media (min-width: 768px) {
    .instagram-section { padding-block: 8rem; }
}

.instagram-section__inner {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-px);
}

.instagram-section__heading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 5rem;
}

@media (min-width: 768px) {
    .instagram-section__heading { margin-bottom: 7rem; }
}

.instagram-section__heading h2 {
    letter-spacing: 0.35em;
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 300;
}

.instagram-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

@media (min-width: 768px) {
    .instagram-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 0.75rem;
    }
}

.instagram-grid__item {
    display: block;
    aspect-ratio: 1;
    overflow: hidden;
    background-color: var(--color-neutral-200);
}

.instagram-grid__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s ease;
}

.instagram-grid__item:hover img {
    transform: scale(1.1);
}

.instagram-section__link {
    text-align: center;
    margin-top: 3rem;
}

.instagram-section__link a {
    font-size: 10px;
    letter-spacing: 0.3em;
    font-weight: 300;
    transition: opacity var(--transition-base);
}

.instagram-section__link a:hover { opacity: 0.5; }

/* ============================================
   5. News Section
   ============================================ */
.news-section {
    padding-block: 6rem;
    background-color: var(--color-neutral-100);
}

@media (min-width: 768px) {
    .news-section { padding-block: 8rem; }
}

.news-section__inner {
    max-width: 56rem;
    margin-inline: auto;
    padding-inline: var(--container-px);
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.news-item {
    display: block;
    padding-bottom: 2rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--color-neutral-200);
    transition: border-color var(--transition-base);
}

.news-item:last-child {
    margin-bottom: 0;
}

.news-item:hover {
    border-bottom-color: var(--color-foreground);
}

.news-item__meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (min-width: 768px) {
    .news-item {
        display: flex;
        align-items: center;
        gap: 2rem;
        padding-bottom: 2rem;
        margin-bottom: 2rem;
    }

    .news-item__meta {
        flex-shrink: 0;
        margin-bottom: 0;
    }
}

.news-item__date {
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--color-neutral-500);
    font-weight: 300;
    white-space: nowrap;
}

.news-item__category {
    font-size: 9px;
    letter-spacing: 0.2em;
    border: 1px solid var(--color-neutral-300);
    padding: 0.25rem 0.75rem;
    font-weight: 300;
    white-space: nowrap;
}

.news-item__title {
    font-size: 0.875rem;
    letter-spacing: 0.15em;
    font-weight: 300;
    transition: opacity var(--transition-base);
}

.news-item:hover .news-item__title { opacity: 0.5; }