/* ==========================================
   リセット & ベーススタイル
   ========================================== */
:root {
    /* カラーパレット - 和のイメージ */
    --color-sumi: #2c2c2c;           /* 墨色 */
    --color-kome: #faf8f3;           /* 米色 */
    --color-shu: #c73e3a;            /* 朱色 */
    --color-ai: #165e83;             /* 藍色 */
    --color-kinari: #f4f1e8;         /* 生成色 */
    --color-nori: #1a3a2e;           /* 海苔色 */
    --color-white: #ffffff;
    --color-shadow: rgba(44, 44, 44, 0.1);
    
    /* タイポグラフィ */
    --font-primary: 'Noto Serif JP', serif;
    --font-accent: 'Shippori Mincho', serif;
    
    /* スペーシング */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* トランジション */
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--color-sumi);
    background-color: var(--color-kome);
    line-height: 1.8;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

button {
    border: none;
    background: none;
    cursor: pointer;
    font-family: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

/* ==========================================
   ナビゲーション
   ========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(250, 248, 243, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px var(--color-shadow);
    transition: var(--transition-smooth);
}

.nav.scrolled {
    padding: 0.5rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.logo-main {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-sumi);
    letter-spacing: 0.1em;
}

.logo-sub {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    color: var(--color-shu);
    font-weight: 400;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 0.5rem;
    z-index: 1001;
}

.nav-toggle span {
    width: 30px;
    height: 2px;
    background-color: var(--color-sumi);
    transition: var(--transition-smooth);
    border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 400px;
    height: 100vh;
    background-color: var(--color-kome);
    list-style: none;
    padding: 6rem 2rem 2rem;
    transition: var(--transition-smooth);
    box-shadow: -5px 0 30px var(--color-shadow);
}

.nav-menu.active {
    right: 0;
}

.nav-menu li {
    margin-bottom: 2rem;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.nav-menu.active li {
    opacity: 1;
    transform: translateX(0);
}

.nav-menu.active li:nth-child(1) { transition-delay: 0.1s; }
.nav-menu.active li:nth-child(2) { transition-delay: 0.2s; }
.nav-menu.active li:nth-child(3) { transition-delay: 0.3s; }
.nav-menu.active li:nth-child(4) { transition-delay: 0.4s; }

.nav-menu a {
    font-size: 1.3rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    position: relative;
    display: inline-block;
    padding-bottom: 0.3rem;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-shu);
    transition: var(--transition-smooth);
}

.nav-menu a:hover::after {
    width: 100%;
}

/* ==========================================
   ヒーローセクション
   ========================================== */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    animation: kenburns 20s ease infinite;
}

@keyframes kenburns {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(44, 44, 44, 0.3) 0%,
        rgba(44, 44, 44, 0.6) 100%
    );
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
    width: 90%;
    max-width: 800px;
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.title-main {
    font-family: var(--font-accent);
    font-size: clamp(2rem, 8vw, 4rem);
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: 0.15em;
    animation: fadeInUp 1s ease 0.3s both;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.title-sub {
    font-size: clamp(1rem, 3vw, 1.5rem);
    font-weight: 400;
    color: var(--color-white);
    letter-spacing: 0.2em;
    animation: fadeInUp 1s ease 0.6s both;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-description {
    font-size: clamp(0.9rem, 2.5vw, 1.2rem);
    color: var(--color-white);
    letter-spacing: 0.15em;
    animation: fadeInUp 1s ease 0.9s both;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-indicators {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 10;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    border: 2px solid var(--color-white);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.indicator.active {
    background-color: var(--color-shu);
    transform: scale(1.2);
}

.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    right: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-white);
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    animation: fadeIn 1s ease 1.2s both;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background-color: var(--color-white);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes scrollDown {
    0%, 100% { transform: translateY(0); opacity: 0; }
    50% { transform: translateY(20px); opacity: 1; }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================
   セクション共通スタイル
   ========================================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-top: var(--spacing-xl);
}

.section-label {
    display: block;
    font-size: 0.85rem;
    letter-spacing: 0.3em;
    color: var(--color-shu);
    margin-bottom: 1rem;
    font-weight: 600;
}

.section-title {
    font-family: var(--font-accent);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.section-decoration {
    width: 60px;
    height: 3px;
    background-color: var(--color-shu);
    margin: 0 auto;
}

/* ==========================================
   コンセプトセクション
   ========================================== */
.concept {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.concept-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.concept-card {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 40px var(--color-shadow);
    transition: var(--transition-smooth);
    position: relative;
}

.concept-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(44, 44, 44, 0.15);
}

.concept-number {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-family: var(--font-accent);
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-shu);
    opacity: 0.2;
    z-index: 1;
}

.concept-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

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

.concept-card:hover .concept-image img {
    transform: scale(1.05);
}

.concept-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, rgba(255, 255, 255, 1), transparent);
}

.concept-content {
    padding: 2rem;
}

.concept-title {
    font-family: var(--font-accent);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.concept-text {
    color: var(--color-sumi);
    line-height: 2;
    letter-spacing: 0.05em;
}

/* ==========================================
   メニューセクション
   ========================================== */
.menu {
    padding: var(--spacing-xl) 0;
    position: relative;
    background-color: var(--color-nori);
}

.menu-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(26, 58, 46, 0.95), rgba(26, 58, 46, 0.95)),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.section-header.light .section-label,
.section-header.light .section-title {
    color: var(--color-white);
}

.section-header.light .section-decoration {
    background-color: var(--color-shu);
}

.menu-grid {
    display: grid;
    gap: 2rem;
    position: relative;
    z-index: 1;
}

.menu-item {
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition-smooth);
}

.menu-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.menu-image {
    height: 200px;
    overflow: hidden;
}

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

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

.menu-content {
    padding: 1.5rem;
    text-align: center;
}

.menu-title {
    font-family: var(--font-accent);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
}

.menu-description {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.menu-price {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-shu);
}

/* ==========================================
   アクセスセクション
   ========================================== */
.access {
    padding: var(--spacing-xl) 0;
}

.access-content {
    display: grid;
    gap: var(--spacing-lg);
}

.access-info {
    background-color: var(--color-white);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: 0 10px 40px var(--color-shadow);
}

.info-group {
    margin-bottom: 2.5rem;
}

.info-group:last-child {
    margin-bottom: 0;
}

.info-title {
    font-family: var(--font-accent);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-shu);
    letter-spacing: 0.1em;
    border-left: 4px solid var(--color-shu);
    padding-left: 1rem;
}

.info-text {
    font-size: 1.1rem;
    line-height: 2;
    letter-spacing: 0.05em;
    padding-left: 1rem;
}

.info-text a {
    color: var(--color-ai);
    font-weight: 600;
}

.info-text a:hover {
    color: var(--color-shu);
}

.info-note {
    font-size: 0.9rem;
    color: #999;
}

.access-map {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 40px var(--color-shadow);
}

.map-container {
    width: 100%;
    height: 400px;
}

/* ==========================================
   フッター
   ========================================== */
.footer {
    background-color: var(--color-sumi);
    color: var(--color-white);
    padding: 3rem 0 2rem;
    text-align: center;
}

.footer-content {
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo .logo-main {
    color: var(--color-white);
    font-size: 1.8rem;
}

.footer-logo .logo-sub {
    color: var(--color-shu);
}

.footer-text {
    font-size: 0.95rem;
    letter-spacing: 0.1em;
    opacity: 0.8;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ==========================================
   アニメーション
   ========================================== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================
   レスポンシブ - タブレット
   ========================================== */
@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }
    
    .nav-menu {
        position: static;
        width: auto;
        height: auto;
        background: none;
        box-shadow: none;
        padding: 0;
        display: flex;
        flex-direction: row;
        gap: 2.5rem;
    }
    
    .nav-menu li {
        margin-bottom: 0;
        opacity: 1;
        transform: translateX(0);
    }
    
    .nav-menu a {
        font-size: 1rem;
    }
    
    .scroll-indicator {
        display: flex;
    }
    
    .concept-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .menu-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }
    
    .access-content {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

/* ==========================================
   レスポンシブ - デスクトップ
   ========================================== */
@media (min-width: 1024px) {
    .concept-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .menu-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 3rem;
    }
}

/* ==========================================
   スクロールバーのカスタマイズ
   ========================================== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-kome);
}

::-webkit-scrollbar-thumb {
    background: var(--color-shu);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-ai);
}