/* ========================================
   ROOOX HIROSHIMA
   Monochrome Elegance
   ======================================== */

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

:root {
    --black: #1a1a1a;
    --gray-dark: #2a2a2a;
    --gray: #666;
    --gray-light: #999;
    --white: #ffffff;
    --gold: #d4af37;
    
    --font: 'Noto Sans JP', -apple-system, sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    font-weight: 300;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.language-selector {
    position: relative;
    display: inline-block;
}

/* ドロップダウンボタン */
.lang-dropdown-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--gray-light);
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
    font-family: var(--font);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 120px;
    justify-content: space-between;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
}

.lang-dropdown-btn:hover {
    border-color: var(--white);
    color: var(--white);
}

.dropdown-arrow {
    font-size: 0.6rem;
    transition: transform 0.3s;
}

.lang-dropdown-btn.open .dropdown-arrow {
    transform: rotate(180deg);
}

/* ドロップダウンメニュー */
.lang-dropdown-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: rgba(26, 26, 26, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    min-width: 150px;
    opacity: 0 !important;
    visibility: hidden !important;
    transform: translateY(-10px);
    transition: all 0.3s;
    z-index: 9999;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    display: none !important;
    pointer-events: none;
}

.lang-dropdown-menu.show {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0);
    display: block !important;
    pointer-events: auto;
}

/* メニューオプション */
.lang-option {
    display: block;
    width: 100%;
    background: transparent;
    border: none;
    color: var(--gray-light);
    padding: 0.75rem 1rem;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.3s;
    font-family: var(--font);
    text-align: left;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.lang-option:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
}

.lang-option.active {
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold);
    border-left: 2px solid var(--gold);
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--white);
}

nav ul {
    display: flex;
    gap: 3rem;
    list-style: none;
}

nav a {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gray-light);
    transition: color 0.3s;
}

nav a:hover,
nav a.active {
    color: var(--white);
}

.cart-link {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gray-light);
    transition: color 0.3s;
}

.cart-link:hover {
    color: var(--white);
}

/* Hero */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    opacity: 0.8;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 3rem;
    width: 100%;
}

.hero-title {
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: 700;
    letter-spacing: 0.05em;
    line-height: 0.9;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.hero-title-ja {
    writing-mode: vertical-rl;
    position: absolute;
    right: -2rem;
    top: 0;
    font-size: 1rem;
    letter-spacing: 0.5em;
    font-weight: 300;
}

.hero-subtitle {
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--gray-light);
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    border: 1px solid var(--white);
    color: var(--white);
    transition: all 0.3s;
}

.btn-primary:hover {
    background: var(--white);
    color: var(--black);
}

/* Category Grid */
.category-section {
    padding: 0;
    background: var(--black);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}

.category-item {
    position: relative;
    aspect-ratio: 3/4;
    overflow: hidden;
    cursor: pointer;
}

.category-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: transform 0.5s, opacity 0.3s;
}

.category-item:hover .category-image {
    transform: scale(1.05);
    opacity: 0.8;
}

.category-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.category-item:hover .category-overlay {
    background: rgba(0, 0, 0, 0.6);
}

.category-name {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--white);
}

/* Section */
section {
    padding: 5rem 3rem;
}

.container {
    max-width: 1600px;
    margin: 0 auto;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 300;
    letter-spacing: 0.1em;
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    text-align: center;
    font-size: 0.875rem;
    font-weight: 300;
    color: var(--gray-light);
    margin-top: -2rem;
    margin-bottom: 3rem;
    letter-spacing: 0.2em;
}

/* Philosophy Section */
.philosophy-section {
    padding: 5rem 3rem;
    background: var(--black);
}

.philosophy-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.philosophy-lead {
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    font-weight: 400;
    line-height: 2;
    color: var(--white);
    margin-bottom: 3rem;
    letter-spacing: 0.05em;
}

.philosophy-text {
    font-size: 1rem;
    font-weight: 300;
    line-height: 2;
    color: var(--gray-light);
    margin-bottom: 2rem;
    letter-spacing: 0.02em;
}

.philosophy-highlight {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 400;
    line-height: 2;
    color: var(--white);
    margin: 3rem 0;
    letter-spacing: 0.3em;
    text-align: center;
}

.philosophy-closing {
    font-size: 1.1rem;
    font-weight: 400;
    line-height: 2.2;
    color: var(--white);
    margin-top: 3rem;
    letter-spacing: 0.05em;
    font-style: italic;
}

/* Features Section */
.features-section {
    background: var(--black);
    padding: 5rem 3rem;
}

/* Philosophy Section */
.philosophy-section {
    padding: 5rem 3rem;
    background: var(--black);
}

.philosophy-content {
    text-align: center;
}

.philosophy-lead {
    font-size: 1.1rem;
    line-height: 2;
    color: var(--gray-light);
    margin-bottom: 2rem;
}

.philosophy-text {
    font-size: 1rem;
    line-height: 2;
    color: var(--gray-light);
    margin-bottom: 2rem;
}

.philosophy-highlight {
    font-size: 1.2rem;
    line-height: 2;
    color: var(--white);
    margin-bottom: 2rem;
    font-weight: 400;
}

.philosophy-closing {
    font-size: 1.1rem;
    line-height: 2;
    color: #ccc;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    max-width: 1400px;
    margin: 0 auto;
}

.feature-item {
    text-align: center;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(26, 26, 26, 0.3);
    transition: all 0.3s;
}

.feature-item:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(26, 26, 26, 0.5);
    transform: translateY(-5px);
}

.feature-number {
    font-size: 3rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.1);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.feature-title {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
    color: var(--white);
}

.feature-subtitle-jp {
    font-size: 1rem;
    font-weight: 400;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.feature-description {
    font-size: 0.875rem;
    font-weight: 300;
    color: var(--gray-light);
    line-height: 1.8;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.product-card {
    cursor: pointer;
    transition: transform 0.3s ease;
    display: block;
    text-decoration: none;
    color: inherit;
}

.product-card:active {
    transform: scale(0.98);
}

.product-image {
    width: 100%;
    aspect-ratio: 3/4;
    object-fit: cover;
    filter: grayscale(100%);
    margin-bottom: 1rem;
    transition: filter 0.5s ease, transform 0.3s ease;
}

.product-card:hover .product-image,
.product-card:active .product-image {
    filter: grayscale(0%);
    transform: scale(1.02);
}

.product-name {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.product-price {
    font-size: 0.875rem;
    color: var(--gray-light);
}

/* Brands Section */
.brands-section {
    background: rgba(26, 26, 26, 0.5);
    padding: 5rem 3rem;
}

/* Instagram Section */
.instagram-section {
    padding: 5rem 3rem;
    background: var(--black);
}

/* Social Links */
.social-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-light);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color 0.3s;
}

.social-link:hover {
    color: var(--white);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* Reviews Section */
.reviews-section {
    padding: 5rem 3rem;
    background: var(--black);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.review-card {
    background: rgba(26, 26, 26, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    transition: all 0.3s;
}

.review-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(26, 26, 26, 0.7);
    transform: translateY(-5px);
}

.review-stars {
    font-size: 1.25rem;
    color: #d4af37;
    margin-bottom: 1.5rem;
    letter-spacing: 0.2em;
}

.review-text {
    font-size: 0.9rem;
    line-height: 1.9;
    color: var(--gray-light);
    margin-bottom: 1.5rem;
}

.review-author {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--white);
    text-align: right;
}

/* Store Info Section */
.store-info-section {
    padding: 5rem 3rem;
    background: var(--black);
}

/* Contact Info Section */
.contact-info-section {
    padding: 5rem 3rem;
    background: var(--black);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.contact-method {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 2rem;
}

.contact-method:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.contact-method-title {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 1rem;
}

.contact-method-content {
    font-size: 1rem;
    line-height: 2;
    color: var(--gray-light);
}

/* Contact Form Section */
.contact-form-section {
    padding: 5rem 3rem;
    background: rgba(26, 26, 26, 0.5);
}

.contact-form {
    background: rgba(42, 42, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 3rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 0.75rem;
}

.required {
    color: #d4af37;
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 1rem;
    background: var(--black);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--white);
    font-family: var(--font);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.3);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

.store-intro {
    text-align: center;
    font-size: 1.1rem;
    line-height: 2;
    color: var(--gray-light);
    margin-bottom: 4rem;
}

.store-details {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.store-detail-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 2rem;
}

.store-detail-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.store-detail-label {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--white);
    margin-bottom: 1rem;
}

.store-detail-content {
    font-size: 1rem;
    line-height: 2;
    color: var(--gray-light);
}

/* Map Section */
.map-section {
    padding: 5rem 3rem;
    background: var(--black);
}

.map-container {
    max-width: 1200px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.map-container iframe {
    display: block;
    width: 100%;
}

.brands-intro {
    text-align: center;
    font-size: 1rem;
    font-weight: 300;
    color: var(--gray-light);
    margin-bottom: 4rem;
    line-height: 1.8;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.brand-item {
    background: rgba(42, 42, 42, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2rem;
    text-align: center;
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    min-height: 120px;
}

.brand-item:hover {
    background: rgba(42, 42, 42, 0.8);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.brand-subtitle {
    display: block;
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    color: var(--gray-light);
    text-transform: none;
    margin-top: 0.25rem;
}

/* Footer */
footer {
    padding: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    max-width: 1600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.footer-section h3 {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
    font-size: 0.875rem;
    color: var(--gray-light);
    line-height: 1.8;
}

.footer-section a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--gray);
    font-size: 0.75rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        padding: 1rem 1rem;
    }
    
    .header-actions {
        gap: 0.5rem;
    }
    
    .language-selector {
        position: relative;
    }
    
    .lang-dropdown-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.7rem;
        min-width: 90px;
    }
    
    .lang-dropdown-menu {
        min-width: 130px;
        font-size: 0.7rem;
        right: -10px;
        max-width: calc(100vw - 2rem);
    }
    
    .lang-option {
        padding: 0.6rem 0.8rem;
        font-size: 0.7rem;
    }
    
    nav ul {
        gap: 1rem;
    }
    
    nav a {
        font-size: 0.65rem;
    }
    
    .cart-link {
        font-size: 0.6rem;
        letter-spacing: 0.1em;
    }
    
    .hero-content {
        padding: 0 1.5rem;
    }
    
    .hero-title-ja {
        display: none;
    }
    
    .category-grid {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 3rem 1.5rem;
    }
    
    .philosophy-section {
        padding: 3rem 1.5rem;
    }
    
    .philosophy-lead {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .philosophy-text {
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
    }
    
    .philosophy-highlight {
        font-size: 1.1rem;
        margin: 2rem 0;
        letter-spacing: 0.2em;
    }
    
    .philosophy-closing {
        font-size: 1rem;
        margin-top: 2rem;
    }
    
    .features-section {
        padding: 3rem 1.5rem;
    }
    
    .reviews-section {
        padding: 3rem 1.5rem;
    }
    
    .instagram-section {
        padding: 3rem 1.5rem;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .review-card {
        padding: 2rem;
    }
    
    .store-info-section {
        padding: 3rem 1.5rem;
    }
    
    .contact-info-section {
        padding: 3rem 1.5rem;
    }
    
    .contact-form-section {
        padding: 3rem 1.5rem;
    }
    
    .contact-form {
        padding: 2rem;
    }
    
    .map-section {
        padding: 3rem 1.5rem;
    }
    
    .map-container iframe {
        height: 300px;
    }
    
    .store-intro {
        font-size: 1rem;
        margin-bottom: 3rem;
    }
    
    .store-details {
        gap: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .feature-item {
        padding: 1.5rem;
    }
    
    .feature-number {
        font-size: 2rem;
    }
    
    .brands-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .brand-item {
        padding: 1.5rem;
        font-size: 0.875rem;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
}

/* Extra Small Screens (iPhone SE, etc.) */
@media (max-width: 400px) {
    .header-container {
        padding: 0.8rem 0.8rem;
    }
    
    .logo {
        font-size: 1rem;
    }
    
    .header-actions {
        gap: 0.3rem;
    }
    
    .lang-dropdown-btn {
        padding: 0.35rem 0.6rem;
        font-size: 0.65rem;
        min-width: 80px;
    }
    
    .lang-dropdown-menu {
        min-width: 120px;
    }
    
    .lang-option {
        padding: 0.5rem 0.6rem;
        font-size: 0.65rem;
    }
    
    .cart-link {
        font-size: 0.55rem;
        letter-spacing: 0.05em;
    }
    
    nav ul {
        gap: 0.8rem;
    }
    
    nav a {
        font-size: 0.6rem;
    }
}

a {
    text-decoration: none;
}