:root {
    --bg-dark: #0a0a0a;
    --bg-washi: #faf9f6;
    --bg-card: rgba(25, 25, 25, 0.8);
    --accent-gold: #c5a059;
    --accent-red: #8b0000;
    --text-main: #f5f5f5;
    --text-dark: #1a1a1a;
    --text-dim: #a0a0a0;
    --glass-bg: rgba(10, 10, 10, 0.75);
    --glass-border: rgba(197, 160, 89, 0.2);
    --font-serif: 'Noto Serif JP', serif;
    --font-sans: 'Outfit', sans-serif;
    --transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    --texture-washi: url('assets/washi_bg.png');
    --texture-wood: url('assets/wood_bg.png');
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 2.0;
    overflow-x: hidden;
}

body.intro-active {
    overflow-y: hidden;
}

h1, h2, h3, .logo-text {
    font-family: var(--font-serif);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 120px 0;
    position: relative;
}

/* Texture sections */
.section-washi {
    background-color: var(--bg-washi);
    background-image: var(--texture-washi);
    background-size: repeat;
    color: var(--text-dark);
}

.section-washi .section-title {
    color: var(--text-dark);
}

.section-washi p {
    color: #444;
}

.section-wood {
    background-image: linear-gradient(rgba(0,0,0,0.85), rgba(0,0,0,0.85)), var(--texture-wood);
    background-size: cover;
    background-position: center;
    color: var(--text-main);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 40px;
    position: relative;
    letter-spacing: 0.1em;
}

.section-title.centered {
    text-align: center;
}

.section-title.centered::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background-color: var(--accent-gold);
}

/* Header & Nav */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    z-index: 1100;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}

#header.scrolled {
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    height: 70px;
}

.nav-container {
    max-width: 1400px;
    height: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 40px;
}

.logo {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-text {
    font-size: 1.8rem;
    color: var(--accent-gold);
    letter-spacing: 0.2em;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--text-dim);
    letter-spacing: 0.3em;
    margin-top: 4px;
}

.nav-links {
    display: flex;
    gap: 40px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--text-dim);
}

.nav-links a:hover {
    color: var(--accent-gold);
}

.btn-reserve {
    background: transparent;
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    padding: 10px 30px;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    border-radius: 2px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-reserve::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-gold);
    transition: var(--transition);
    z-index: -1;
}

.btn-reserve:hover {
    color: var(--bg-dark);
}

.btn-reserve:hover::before {
    left: 0;
}

/* Hero Section */
.hero {
    height: 100vh;
    width: 100%;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px; /* ヘッダー分の余白を追加 */
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transform: scale(1.1);
    transition: 10s ease-out;
}

.hero:hover .hero-bg {
    transform: scale(1);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.8) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 1200px;
    padding: 0 40px;
}

.hero-text-vertical {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    color: var(--text-main);
    font-family: var(--font-serif);
    font-size: 2.8rem;
    font-weight: 700;
    letter-spacing: 0.4em;
    line-height: 2.2;
    margin-left: auto;
    text-shadow:
        0 0 30px rgba(0, 0, 0, 1),
        2px 2px 8px rgba(0, 0, 0, 0.95),
        0 0 60px rgba(0, 0, 0, 0.8);
    background: linear-gradient(
        to left,
        rgba(0, 0, 0, 0.45) 0%,
        rgba(0, 0, 0, 0.25) 60%,
        transparent 100%
    );
    padding: 40px 36px 40px 50px;
    border-right: 2px solid rgba(197, 160, 89, 0.6);
}

.hero-text-vertical .line-1 {
    transform: translateY(-20px) translateX(20px);
}

.hero-text-vertical .line-2 {
    transform: translateY(40px) translateX(20px);
}

.hero-text-vertical span {
    display: block;
    opacity: 0;
    transition: var(--transition);
}

.hero-text-vertical .highlight {
    color: var(--accent-gold);
    text-shadow:
        0 0 20px rgba(197, 160, 89, 0.5),
        2px 2px 8px rgba(0, 0, 0, 0.95);
}


.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.hero-scroll-indicator span {
    font-size: 0.7rem;
    letter-spacing: 0.4em;
    color: var(--text-dim);
}

.hero-scroll-indicator .line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--accent-gold), transparent);
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.1% { transform: scaleY(1); transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

/* Concept Section */
.concept-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.img-wrapper {
    position: relative;
    overflow: hidden;
    padding-bottom: 125%; /* 4:5 Aspect Ratio */
}

.img-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 2s var(--transition);
}

.img-wrapper:hover img {
    transform: scale(1.05);
}

.concept-text {
    padding-right: 40px;
}

.concept-text p {
    margin-bottom: 25px;
    color: var(--text-dim);
    font-size: 1.1rem;
}

/* Menu Section */
.dark-section {
    background-color: #050505;
}

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

.menu-item {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 30px;
    transition: var(--transition);
}

.menu-item:hover {
    border-color: var(--accent-gold);
    transform: translateY(-10px);
}

.menu-img {
    width: 100%;
    height: 220px;
    background: #1a1a1a;
    margin-bottom: 25px;
    position: relative;
    overflow: hidden;
}

.menu-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.menu-info h3 {
    color: var(--accent-gold);
    margin-bottom: 15px;
    font-size: 1.3rem;
}

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

/* Info Section */
.info-card {
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    padding: 60px;
    max-width: 800px;
    margin: 0 auto;
}

.info-list {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 20px;
}

.info-list dt {
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.1em;
}

.info-list dd {
    color: var(--text-main);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

/* CTA Section */
.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-text {
    font-size: 1.2rem;
    line-height: 2;
    color: var(--text-dim);
    margin-bottom: 50px;
    letter-spacing: 0.1em;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.btn-main, .btn-sub {
    display: inline-block;
    padding: 18px 50px;
    font-size: 1rem;
    letter-spacing: 0.15em;
    font-family: var(--font-serif);
    transition: var(--transition);
    border-radius: 2px;
}

.btn-main {
    background-color: var(--accent-gold);
    color: var(--bg-dark);
    font-weight: 700;
}

.btn-main:hover {
    background-color: var(--accent-red);
    color: #fff;
    transform: translateY(-5px);
}

.btn-sub {
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
}

.btn-sub:hover {
    background-color: var(--accent-gold);
    color: var(--bg-dark);
    transform: translateY(-5px);
}

/* Responsive */
@media (max-width: 768px) {
    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .btn-main, .btn-sub {
        width: 100%;
        text-align: center;
    }
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: 1s var(--transition);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-text-vertical { font-size: 2.5rem; }
    .concept-grid { grid-template-columns: 1fr; gap: 40px; }
    .concept-text { padding-right: 0; }
}

/* Mobile Menu Toggle Button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 40px;
    height: 40px;
    cursor: pointer;
    padding: 4px;
    z-index: 1100;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    background-color: var(--text-main);
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
    transform-origin: center;
}

.mobile-menu-toggle.open span:nth-child(1) {
    transform: translateY(3.75px) rotate(45deg);
}

.mobile-menu-toggle.open span:nth-child(2) {
    transform: translateY(-3.75px) rotate(-45deg);
}

/* Mobile Nav Drawer */
.mobile-nav {
    display: none !important;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 5, 5, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1050;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    pointer-events: none;
}

/* デスクトップでは常に非表示（親サイトCSSの上書き対策） */
@media (min-width: 769px) {
    .mobile-nav,
    .mobile-nav.open {
        display: none !important;
        opacity: 0 !important;
        pointer-events: none !important;
    }
}

.mobile-nav.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.mobile-nav a {
    font-family: var(--font-serif);
    font-size: 1.6rem;
    color: var(--text-dim);
    letter-spacing: 0.3em;
    padding: 20px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    width: 60%;
    text-align: center;
    transition: color 0.3s ease;
}

.mobile-nav a:first-child {
    border-top: 1px solid rgba(255,255,255,0.06);
}

.mobile-nav a:hover {
    color: var(--accent-gold);
}

.mobile-nav .mobile-nav-reserve {
    margin-top: 40px;
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold) !important;
    border-radius: 2px;
    padding: 16px 50px !important;
    width: auto !important;
    font-size: 1rem !important;
    letter-spacing: 0.2em;
}

@media (max-width: 768px) {
    .nav-links, .header-cta { display: none !important; }
    .mobile-menu-toggle { display: flex !important; }
    .mobile-nav { display: flex !important; }
    .nav-container { padding: 0 20px; }
    .section-title { font-size: 2rem; }
    .hero-text-vertical {
        font-size: 1.8rem;
        letter-spacing: 0.3em;
        padding: 24px 20px 24px 30px;
    }
}

/* Intro Animation Styles */
.intro-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-dark);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    pointer-events: none;
    transition: opacity 1s ease-in-out;
}

.intro-screen.fade-out {
    opacity: 0;
}

.intro-content {
    position: relative;
    width: 100%;
    max-width: 1200px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.intro-logo {
    position: absolute;
    font-size: 8rem;
    color: var(--accent-gold);
    letter-spacing: 0.3em;
    font-family: var(--font-serif);
    opacity: 0;
    filter: blur(10px);
    transform: scale(0.9);
    animation: intro-logo-anim 2.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.intro-text {
    position: absolute;
    right: 15%;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-serif);
    font-size: 2rem;
    letter-spacing: 0.5em;
    color: var(--text-main);
    opacity: 0;
    filter: blur(5px);
    animation: intro-text-anim 3s cubic-bezier(0.22, 1, 0.36, 1) 2.5s forwards;
}

.intro-text span {
    display: block;
    margin-bottom: 20px;
}

@keyframes intro-logo-anim {
    0% { opacity: 0; filter: blur(10px); transform: scale(0.95); }
    40% { opacity: 1; filter: blur(0); transform: scale(1); }
    70% { opacity: 1; filter: blur(0); transform: scale(1.02); }
    100% { opacity: 0; filter: blur(15px); transform: scale(1.05); }
}

@keyframes intro-text-anim {
    0% { opacity: 0; filter: blur(5px); transform: translateY(20px); }
    30% { opacity: 1; filter: blur(0); transform: translateY(0); }
    70% { opacity: 1; filter: blur(0); transform: translateY(0); }
    100% { opacity: 0; filter: blur(10px); transform: translateY(-20px); }
}

/* Floating Reservation Button */
.floating-reserve {
    position: fixed;
    right: 20px;
    bottom: 40px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
    pointer-events: none;
}

.floating-reserve.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.btn-floating {
    background-color: var(--accent-red);
    color: #fff;
    padding: 30px 15px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    border-radius: 4px;
    font-family: var(--font-serif);
    font-size: 1.1rem;
    letter-spacing: 0.2em;
    box-shadow: 0 10px 30px rgba(139, 0, 0, 0.4);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-floating:hover {
    transform: translateY(-5px);
    background-color: #a00000;
    box-shadow: 0 15px 40px rgba(139, 0, 0, 0.6);
}

@media (max-width: 768px) {
    .intro-logo { font-size: 4rem; }
    .intro-text { font-size: 1.2rem; right: 5%; }
    .floating-reserve { right: 10px; bottom: 20px; scale: 0.8; }
}