/* Variables */
:root {
    --bg-color: #0a0a0a;
    --text-main: #f0f0f0;
    --text-muted: #888;
    --accent: #c5a059; /* Gold */
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Noto Sans JP', sans-serif;
    --easing: cubic-bezier(0.19, 1, 0.22, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Loading */
.loader {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100vh;
    background: #000;
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
}
.loader-text {
    font-family: var(--font-serif);
    font-size: 2rem;
    color: var(--accent);
    opacity: 0;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 2rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    mix-blend-mode: difference;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

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

.nav a {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.btn-reserve {
    border: 1px solid var(--text-main);
    padding: 0.5rem 1.5rem;
}

.hamburger {
    display: none;
}

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

.hero-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image: url('https://images.unsplash.com/photo-1544148103-0773bf10d330?q=80&w=2070&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    filter: brightness(0.4);
    transform: scale(1.1);
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 8vw, 6rem);
    line-height: 1.1;
    margin-bottom: 2rem;
}

.reveal {
    display: block;
    opacity: 0;
    transform: translateY(30px);
}

.hero-sub {
    font-size: 0.9rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    opacity: 0;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    font-size: 0.8rem;
    opacity: 0.7;
}

.scroll-indicator .line {
    width: 1px;
    height: 60px;
    background: var(--text-main);
}

/* Sections Common */
.section {
    padding: 10rem 5%;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.label {
    display: block;
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
}

h2 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: 2rem;
    font-weight: 400;
}

/* Concept */
.concept .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.text-block p {
    color: var(--text-muted);
    margin-bottom: 3rem;
}

.link-arrow {
    border-bottom: 1px solid var(--accent);
    padding-bottom: 5px;
    font-family: var(--font-serif);
    font-style: italic;
}

.image-block {
    position: relative;
    height: 600px;
    overflow: hidden;
}

/* Menu Preview */
.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.menu-item {
    cursor: pointer;
}

.menu-img {
    height: 400px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.menu-img img {
    transition: transform 0.8s var(--easing);
}

.menu-item:hover .menu-img img {
    transform: scale(1.1);
}

.menu-info h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.menu-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.btn-container {
    text-align: center;
    margin-top: 5rem;
}

.btn-outline {
    border: 1px solid var(--text-muted);
    padding: 1rem 3rem;
    transition: 0.3s;
}

.btn-outline:hover {
    background: var(--text-main);
    color: var(--bg-color);
}

/* Parallax Section */
.parallax-section {
    position: relative;
    height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.parallax-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image: url('https://images.unsplash.com/photo-1470337458703-46ad1756a187?q=80&w=2069&auto=format&fit=crop');
    background-size: cover;
    background-position: center;
    background-attachment: fixed; /* Simple parallax */
    filter: brightness(0.5);
}

.parallax-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

/* Footer */
.footer {
    padding: 5rem 5% 2rem;
    border-top: 1px solid #222;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4rem;
}

.footer-logo {
    font-family: var(--font-serif);
    font-size: 2rem;
}

.footer-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    color: #444;
    font-size: 0.8rem;
}

.socials a {
    margin-left: 1rem;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .nav { display: none; } /* Simplified for demo */
    .hamburger { display: block; width: 30px; height: 20px; position: relative; }
    .hamburger span { position: absolute; width: 100%; height: 1px; background: #fff; }
    .hamburger span:nth-child(2) { bottom: 0; }
    
    .concept .container { grid-template-columns: 1fr; }
    .image-block { height: 400px; }
}
/* =========================================
   SUB PAGES STYLES (Add to style.css)
   ========================================= */

/* Sub Page Header */
.page-header {
    height: 50vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-bottom: 5rem;
}

.page-header-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    filter: brightness(0.4);
    transform: scale(1.1);
}

.page-title {
    position: relative;
    z-index: 2;
    font-family: var(--font-serif);
    font-size: 3rem;
    letter-spacing: 0.1em;
}

/* Nav Active State */
.nav a.active {
    border-bottom: 1px solid var(--accent);
}

/* Concept Page */
.concept-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 8rem;
}

.concept-layout.reverse {
    direction: rtl; /* Flip order visually */
}
.concept-layout.reverse .concept-text {
    direction: ltr; /* Reset text direction */
}

.concept-text h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.signature {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-top: 2rem;
    color: var(--accent);
    font-style: italic;
}

.concept-img img {
    border-radius: 4px;
    filter: grayscale(30%);
}

/* Menu Page */
.menu-tabs {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 4rem;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-serif);
    font-size: 1.2rem;
    cursor: pointer;
    padding-bottom: 0.5rem;
    transition: 0.3s;
}

.tab-btn.active, .tab-btn:hover {
    color: var(--accent);
    border-bottom: 1px solid var(--accent);
}

.menu-content {
    display: none; /* Hidden by default */
    max-width: 800px;
    margin: 0 auto;
}

.menu-content.active {
    display: block;
    animation: fadeIn 0.8s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.menu-list-item {
    margin-bottom: 2.5rem;
}

.item-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.item-name {
    font-size: 1.1rem;
    font-weight: 500;
}

.item-line {
    flex-grow: 1;
    height: 1px;
    background: #333;
    margin: 0 1rem;
    opacity: 0.5;
}

.item-price {
    font-family: var(--font-serif);
    color: var(--accent);
}

.item-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Gallery Page */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    grid-auto-rows: 250px;
    gap: 1.5rem;
    grid-auto-flow: dense;
}

.gallery-item {
    overflow: hidden;
    position: relative;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-item.wide { grid-column: span 2; }
.gallery-item.tall { grid-row: span 2; }

/* Reserve Page (Form) */
.reserve-form {
    max-width: 600px;
    margin: 0 auto;
    background: #111;
    padding: 3rem;
    border: 1px solid #222;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

input, select, textarea {
    width: 100%;
    background: transparent;
    border: 1px solid #333;
    color: var(--text-main);
    padding: 1rem;
    font-family: var(--font-sans);
    outline: none;
    transition: 0.3s;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    background: rgba(255,255,255,0.02);
}

.btn-submit {
    width: 100%;
    background: var(--accent);
    color: #000;
    border: none;
    padding: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: 0.3s;
    margin-top: 1rem;
}

.btn-submit:hover {
    background: #fff;
}

/* Responsive for Subpages */
@media (max-width: 768px) {
    .concept-layout, .concept-layout.reverse {
        grid-template-columns: 1fr;
        direction: ltr;
        gap: 2rem;
    }
    .gallery-item.wide { grid-column: span 1; }
    .page-header { height: 30vh; }
    .page-title { font-size: 2rem; }
    .form-row { grid-template-columns: 1fr; }
    .reserve-form { padding: 1.5rem; }
}
/* =========================================
   MENU PAGE IMAGE UPDATE
   ========================================= */

.menu-list-item.with-image {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
}

.menu-thumb {
    width: 120px;
    height: 120px;
    flex-shrink: 0;
    overflow: hidden;
    border-radius: 50%; /* 円形にする */
    border: 1px solid #333;
}

.menu-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.menu-list-item.with-image:hover .menu-thumb img {
    transform: scale(1.1);
}

.menu-details {
    flex-grow: 1;
}

/* スマホ対応 */
@media (max-width: 768px) {
    .menu-list-item.with-image {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    .menu-thumb {
        width: 80px;
        height: 80px;
    }
}
/* =========================================
   INSTAGRAM SECTION STYLES
   ========================================= */

.instagram-section {
    padding-bottom: 5rem;
}

.insta-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* PC: 4列 */
    gap: 10px;
    margin-top: 3rem;
}

.insta-item {
    position: relative;
    display: block;
    aspect-ratio: 1 / 1; /* 正方形を維持 */
    overflow: hidden;
}

.insta-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

/* Hover Overlay Effect */
.insta-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.insta-overlay p {
    color: #fff;
    font-family: var(--font-serif);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    transform: translateY(10px);
    transition: transform 0.3s ease;
}

/* Hover Actions */
.insta-item:hover .insta-overlay {
    opacity: 1;
}

.insta-item:hover .insta-overlay p {
    transform: translateY(0);
}

.insta-item:hover img {
    transform: scale(1.1);
}

/* Follow Link */
.insta-link {
    text-align: center;
    margin-top: 3rem;
}

.insta-link a {
    font-family: var(--font-serif);
    font-style: italic;
    border-bottom: 1px solid var(--text-muted);
    padding-bottom: 5px;
    color: var(--text-muted);
}

.insta-link a:hover {
    color: var(--accent);
    border-color: var(--accent);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .insta-grid {
        grid-template-columns: repeat(2, 1fr); /* スマホ: 2列 */
    }
}