/* ========================================
   Luvira Shop - ギャラリー展示販売
   ======================================== */

:root {
    --color-primary: #c9a86c;
    --color-primary-light: #e2d4b7;
    --color-primary-dark: #a68b4b;
    --color-bg: #fbf7f0;
    --color-bg-warm: #fdf9f3;
    --color-text: #423e3e;
    --color-text-light: #6b6b6b;
    --color-text-dark: #333333;
    --color-border: #e5dfd5;
    --color-sold: #b8b0a4;

    --font-serif: 'Noto Serif JP', 'Yu Mincho', serif;
    --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
    --font-display: 'Cormorant Garamond', serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    font-weight: 300;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

/* ========================================
   Header
   ======================================== */
.shop-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 32px 48px;
    max-width: 1400px;
    margin: 0 auto;
}

.shop-logo-img {
    width: 72px;
    height: auto;
    transition: opacity 0.16s ease;
}

.shop-logo:hover .shop-logo-img {
    opacity: 0.3;
}

.shop-nav {
    display: flex;
    gap: 0;
}

.shop-nav-link {
    font-family: var(--font-display);
    font-size: 13px;
    letter-spacing: 0.1em;
    padding: 8px 20px;
    color: var(--color-text-light);
    transition: opacity 0.16s ease;
}

.shop-nav-link.active {
    color: var(--color-text-dark);
}

.shop-nav-link:hover {
    opacity: 0.3;
}

/* ========================================
   Main
   ======================================== */
.shop-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 48px 80px;
}

.shop-title-area {
    text-align: center;
    padding: 40px 0 48px;
}

.shop-title {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 400;
    color: var(--color-text-dark);
    letter-spacing: 0.08em;
    margin-bottom: 8px;
}

.shop-subtitle {
    font-size: 13px;
    color: var(--color-text-light);
    letter-spacing: 0.1em;
}

/* Filter */
.shop-filter {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-display);
    font-size: 13px;
    letter-spacing: 0.08em;
    padding: 6px 20px;
    border: 1px solid var(--color-border);
    background: none;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-btn.active {
    background-color: var(--color-text-dark);
    border-color: var(--color-text-dark);
    color: #fff;
}

.filter-btn:hover:not(.active) {
    border-color: var(--color-text-light);
    color: var(--color-text-dark);
}

/* ========================================
   Product Grid
   ======================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.product-card:hover {
    opacity: 0.85;
}

.product-thumb {
    position: relative;
    overflow: hidden;
    margin-bottom: 12px;
}

.product-thumb-img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    object-position: center;
    transition: transform 0.6s ease;
}

.product-card:hover .product-thumb-img {
    transform: scale(1.02);
}

/* Sold Out Badge */
.sold-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background-color: var(--color-sold);
    color: #fff;
    font-family: var(--font-display);
    font-size: 11px;
    letter-spacing: 0.1em;
    padding: 4px 12px;
}

.product-card.sold-out .product-thumb-img {
    opacity: 0.5;
}

/* Product Info */
.product-info {
    padding: 0 4px;
}

.product-name {
    font-family: var(--font-serif);
    font-size: 13px;
    font-weight: 400;
    color: var(--color-text-dark);
    letter-spacing: 0.05em;
    margin-bottom: 4px;
    line-height: 1.5;
}

.product-price {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.03em;
}

.product-price.sold-out {
    color: var(--color-sold);
    text-decoration: line-through;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 80px 0;
    color: var(--color-text-light);
    font-size: 14px;
    letter-spacing: 0.05em;
}

.empty-state p {
    margin-bottom: 8px;
}

/* ========================================
   Product Modal
   ======================================== */
.product-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: 100;
    align-items: center;
    justify-content: center;
}

.product-modal.active {
    display: flex;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
}

.modal-content {
    position: relative;
    display: flex;
    max-width: 900px;
    max-height: 90vh;
    width: 90vw;
    background-color: var(--color-bg);
    overflow: hidden;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    color: var(--color-text-light);
    font-size: 24px;
    cursor: pointer;
    z-index: 10;
    transition: opacity 0.16s ease;
}

.modal-close:hover {
    opacity: 0.3;
}

/* Slider */
.modal-slider {
    position: relative;
    width: 55%;
    flex-shrink: 0;
    overflow: hidden;
    background-color: #f0ece4;
}

.slider-images {
    display: flex;
    transition: transform 0.4s ease;
    height: 100%;
}

.slider-images img {
    width: 100%;
    flex-shrink: 0;
    object-fit: cover;
    object-position: center;
}

.slider-prev,
.slider-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.7);
    border: none;
    font-size: 20px;
    color: var(--color-text);
    cursor: pointer;
    transition: background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-prev:hover,
.slider-next:hover {
    background-color: rgba(255, 255, 255, 0.95);
}

.slider-prev { left: 8px; }
.slider-next { right: 8px; }

.slider-dots {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
}

.slider-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.4);
    border: none;
    cursor: pointer;
    padding: 0;
    transition: background-color 0.2s ease;
}

.slider-dot.active {
    background-color: rgba(255, 255, 255, 0.9);
}

/* Modal Info */
.modal-info {
    width: 45%;
    padding: 40px 32px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.modal-product-name {
    font-family: var(--font-serif);
    font-size: 18px;
    font-weight: 400;
    color: var(--color-text-dark);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    line-height: 1.6;
}

.modal-product-price {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.03em;
    margin-bottom: 24px;
}

.modal-product-desc {
    font-size: 13px;
    line-height: 2;
    color: var(--color-text);
    letter-spacing: 0.03em;
    margin-bottom: 24px;
    flex: 1;
}

.modal-product-desc p {
    margin-bottom: 12px;
}

.modal-product-status {
    margin-bottom: 20px;
}

.status-tag {
    display: inline-block;
    font-size: 11px;
    letter-spacing: 0.1em;
    padding: 4px 16px;
    border: 1px solid;
}

.status-tag.available {
    color: var(--color-primary-dark);
    border-color: var(--color-primary);
}

.status-tag.sold-out {
    color: var(--color-sold);
    border-color: var(--color-sold);
}

.modal-buy-btn {
    display: block;
    text-align: center;
    padding: 14px 0;
    background-color: var(--color-text-dark);
    color: #fff;
    font-family: var(--font-display);
    font-size: 14px;
    letter-spacing: 0.1em;
    transition: opacity 0.3s ease;
    margin-top: auto;
}

.modal-buy-btn:hover {
    opacity: 0.8;
}

.modal-buy-btn.disabled {
    background-color: var(--color-sold);
    pointer-events: none;
}

/* ========================================
   Footer
   ======================================== */
.shop-footer {
    text-align: center;
    padding: 48px 24px 32px;
    border-top: 1px solid var(--color-border);
}

.shop-footer-brand {
    font-family: var(--font-display);
    font-size: 18px;
    color: var(--color-primary);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.shop-footer-copy {
    font-size: 11px;
    color: var(--color-text-light);
}

/* ========================================
   Responsive
   ======================================== */
@media screen and (max-width: 840px) {
    .shop-header {
        padding: 24px 24px;
    }

    .shop-main {
        padding: 0 24px 60px;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .modal-content {
        flex-direction: column;
        max-height: 95vh;
    }

    .modal-slider {
        width: 100%;
        height: 50vh;
    }

    .modal-info {
        width: 100%;
        padding: 24px;
    }
}

@media screen and (max-width: 540px) {
    .shop-header {
        padding: 20px 16px;
    }

    .shop-main {
        padding: 0 16px 48px;
    }

    .shop-title {
        font-size: 28px;
    }

    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .product-name {
        font-size: 12px;
    }

    .product-price {
        font-size: 13px;
    }

    .shop-nav-link {
        padding: 8px 12px;
        font-size: 12px;
    }

    .modal-slider {
        height: 40vh;
    }

    .modal-info {
        padding: 20px 16px;
    }
}