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

:root {
    --color-primary: #1e3d59;     /* 関門の深い海・夜空 */
    --color-secondary: #17b978;   /* 火の山のフォレストグリーン */
    --color-accent: #ff6f61;      /* 温かい夕日・ファミリーの団らん */
    --color-bg-light: #f8f6f0;    /* 砂浜やナチュラルウッドを連想するベージュ */
    --color-text-dark: #2b2b2b;   /* メインテキスト */
    --color-text-light: #ffffff;  /* ライトテキスト */
    --color-white: #ffffff;
    --font-main: 'Noto Sans JP', sans-serif;
    --font-accent: 'Quicksand', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: var(--font-main);
    color: var(--color-text-dark);
    background-color: var(--color-white);
    line-height: 1.8;
    overflow-x: hidden;
}

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

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

/* --------------------------------------------------
 * Common Layout & Components
 * -------------------------------------------------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-subtitle {
    font-family: var(--font-accent);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--color-secondary);
    display: block;
    margin-bottom: 12px;
}

h2 {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1.4;
}

p.lead {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 24px;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-accent, .btn-cta-reserve {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.95rem;
    text-align: center;
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-subtle);
    transform: translateY(0);
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-light);
}

.btn-primary:hover {
    background-color: #112233;
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    transform: translateY(-3px);
}

.btn-accent {
    background-color: var(--color-accent);
    color: var(--color-text-light);
}

.btn-accent:hover {
    background-color: #e55c4e;
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

/* --------------------------------------------------
 * Header Navigation
 * -------------------------------------------------- */
#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 24px 0;
    transition: var(--transition-smooth);
}

#main-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.header-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    display: flex;
    flex-direction: column;
}

.logo-en {
    font-family: var(--font-accent);
    font-weight: 700;
    font-size: 1.4rem;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    transition: var(--transition-smooth);
}

.logo-ja {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.8);
    margin-top: -2px;
    transition: var(--transition-smooth);
}

#main-header.scrolled .logo-en {
    color: var(--color-primary);
}

#main-header.scrolled .logo-ja {
    color: var(--color-secondary);
}

.nav-menu ul {
    list-style: none;
    display: flex;
    gap: 32px;
}

.nav-menu a {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-text-light);
    position: relative;
    padding: 8px 0;
}

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

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

#main-header.scrolled .nav-menu a {
    color: var(--color-primary);
}

/* Reserve Button in Header */
.btn-reserve {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 50px;
    background-color: var(--color-accent);
    color: var(--color-text-light);
    font-weight: 700;
    font-size: 0.9rem;
    box-shadow: 0 4px 15px rgba(255, 111, 97, 0.3);
}

.btn-reserve:hover {
    background-color: #e55c4e;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 111, 97, 0.4);
}

/* Mobile Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-light);
    transition: var(--transition-smooth);
}

#main-header.scrolled .mobile-menu-toggle span {
    background-color: var(--color-primary);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
    background-color: var(--color-primary);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
    background-color: var(--color-primary);
}

/* Mobile Nav Drawer */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100%;
    background-color: var(--color-bg-light);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.1);
    z-index: 999;
    padding: 100px 24px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition-smooth);
}

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

.mobile-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.mobile-nav a {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-primary);
    display: block;
}

.btn-reserve-mobile {
    display: block;
    width: 100%;
    text-align: center;
    padding: 14px;
    background-color: var(--color-accent);
    color: var(--color-text-light);
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(255, 111, 97, 0.3);
}

/* --------------------------------------------------
 * Hero Section
 * -------------------------------------------------- */
#hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-light);
    text-align: center;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transform: scale(1.05);
    animation: zoomOutEffect 15s ease-out forwards;
    z-index: -1;
}

@keyframes zoomOutEffect {
    to {
        transform: scale(1);
    }
}

.hero-content {
    max-width: 800px;
    padding: 0 24px;
    z-index: 10;
}

.hero-tag {
    font-family: var(--font-accent);
    font-weight: 700;
    font-size: 1rem;
    letter-spacing: 0.25em;
    color: var(--color-secondary);
    background-color: rgba(255, 255, 255, 0.1);
    padding: 8px 20px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: inline-block;
    margin-bottom: 24px;
    backdrop-filter: blur(5px);
}

#hero h1 {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 24px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

#hero p {
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.8;
    margin-bottom: 40px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* Scroll Down Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.7);
}

.mouse {
    width: 20px;
    height: 32px;
    border: 2px solid rgba(255, 255, 255, 0.7);
    border-radius: 20px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background-color: var(--color-white);
    border-radius: 20px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
    0% {
        top: 6px;
        opacity: 1;
    }
    100% {
        top: 18px;
        opacity: 0;
    }
}

/* --------------------------------------------------
 * Concept Section
 * -------------------------------------------------- */
#concept {
    background-color: var(--color-bg-light);
    position: relative;
}

.concept-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.concept-text h2 {
    margin-bottom: 24px;
}

.concept-text p {
    margin-bottom: 20px;
    color: #555;
    font-size: 1rem;
}

.feature-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.badge {
    display: inline-block;
    padding: 8px 18px;
    background-color: var(--color-white);
    color: var(--color-primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    box-shadow: var(--shadow-subtle);
}

.badge i {
    color: var(--color-secondary);
    margin-right: 6px;
}

.concept-visual .main-visual-box {
    position: relative;
}

.concept-visual img {
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.experience-card {
    position: absolute;
    bottom: -30px;
    left: -30px;
    width: 280px;
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: 24px;
    border-radius: 16px;
    box-shadow: var(--shadow-medium);
}

.experience-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.experience-card p {
    font-size: 0.8rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
}

/* --------------------------------------------------
 * Site Type Section
 * -------------------------------------------------- */
#sites {
    background-color: var(--color-white);
}

.site-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.site-card {
    background-color: var(--color-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-subtle);
    border: 1px solid rgba(0, 0, 0, 0.03);
    transition: var(--transition-smooth);
}

.site-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-medium);
}

.site-img {
    height: 220px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.site-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 6px 14px;
    background-color: var(--color-secondary);
    color: var(--color-text-light);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.site-info {
    padding: 28px;
}

.site-info h3 {
    font-size: 1.35rem;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.site-spec {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-secondary);
    display: block;
    margin-bottom: 16px;
}

.site-info p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 24px;
    height: 80px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.site-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    padding-top: 16px;
}

.price-label {
    font-size: 0.85rem;
    color: #888;
}

.price-value {
    font-family: var(--font-accent);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-accent);
}

/* --------------------------------------------------
 * Facilities Section
 * -------------------------------------------------- */
#facilities {
    background-color: var(--color-bg-light);
}

.facilities-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 60px;
    align-items: center;
}

.facilities-visual img {
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

.facilities-text h2 {
    margin-bottom: 24px;
}

.facilities-text > p {
    margin-bottom: 32px;
    color: #555;
}

.facility-features {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.facility-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.facility-icon {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background-color: var(--color-white);
    color: var(--color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    box-shadow: var(--shadow-subtle);
    flex-shrink: 0;
}

.facility-detail h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.facility-detail p {
    font-size: 0.9rem;
    color: #666;
}

/* --------------------------------------------------
 * Gourmet / BBQ Section
 * -------------------------------------------------- */
#bbq {
    background-color: var(--color-white);
}

.bbq-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.bbq-text h2 {
    margin-bottom: 24px;
}

.bbq-text p {
    margin-bottom: 20px;
    color: #555;
}

.bbq-links {
    margin-top: 32px;
}

.bbq-visual img {
    border-radius: 20px;
    box-shadow: var(--shadow-medium);
}

/* --------------------------------------------------
 * Access & Map Section
 * -------------------------------------------------- */
#access {
    background-color: var(--color-bg-light);
}

.access-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 40px;
}

.access-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.info-block h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.info-block h3 i {
    color: var(--color-secondary);
    margin-right: 6px;
}

.info-block p {
    font-size: 0.95rem;
    color: #555;
}

.info-block-light {
    background-color: var(--color-white);
    padding: 24px;
    border-radius: 16px;
    box-shadow: var(--shadow-subtle);
}

.info-block-light h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.info-block-light ul {
    list-style: none;
}

.info-block-light li {
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 8px;
    padding-left: 16px;
    position: relative;
}

.info-block-light li::before {
    content: '•';
    color: var(--color-secondary);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* --------------------------------------------------
 * FAQ Section (Accordion)
 * -------------------------------------------------- */
#faq {
    background-color: var(--color-white);
}

.faq-accordion-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding: 16px 0;
}

.faq-question {
    width: 100%;
    background: transparent;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    padding: 16px 0;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    cursor: pointer;
}

.faq-icon {
    font-size: 0.9rem;
    color: var(--color-secondary);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
}

.faq-item.active .faq-answer {
    max-height: 1000px; /* 大きい値を設定して滑らかに開くようにする */
    transition: max-height 0.5s ease-in-out;
}

.faq-answer p {
    padding-bottom: 16px;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --------------------------------------------------
 * CTA Section
 * -------------------------------------------------- */
#cta {
    background-color: var(--color-primary);
    padding: 80px 0;
    color: var(--color-text-light);
    text-align: center;
}

.cta-box {
    max-width: 700px;
    margin: 0 auto;
}

.cta-box h2 {
    color: var(--color-text-light);
    margin-bottom: 16px;
}

.cta-box p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 40px;
}

.btn-cta-reserve {
    background-color: var(--color-accent);
    color: var(--color-text-light);
    font-size: 1.1rem;
    padding: 16px 44px;
}

.btn-cta-reserve:hover {
    background-color: #e55c4e;
    transform: scale(1.05);
}

.cta-tel {
    margin-top: 32px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.cta-tel span {
    display: block;
    margin-bottom: 8px;
}

.cta-tel a {
    font-family: var(--font-accent);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text-light);
}

/* --------------------------------------------------
 * Footer Section
 * -------------------------------------------------- */
footer {
    background-color: #171d24;
    color: rgba(255, 255, 255, 0.6);
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 1.5fr;
    gap: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 40px;
    margin-bottom: 20px;
}

.footer-brand h3 {
    font-family: var(--font-accent);
    font-size: 1.6rem;
    color: var(--color-text-light);
    letter-spacing: 0.1em;
    margin-bottom: 4px;
}

.footer-brand p {
    font-size: 0.8rem;
    margin-bottom: 20px;
}

.footer-sns {
    display: flex;
    gap: 16px;
}

.footer-sns a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.footer-sns a:hover {
    background-color: var(--color-accent);
}

.footer-links h4, .footer-info h4 {
    color: var(--color-text-light);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a:hover {
    color: var(--color-text-light);
}

.footer-info p {
    font-size: 0.9rem;
}

.footer-bottom {
    text-align: center;
    font-size: 0.75rem;
}

/* --------------------------------------------------
 * Responsive Styles (Mobile Optimization)
 * -------------------------------------------------- */
@media (max-width: 991px) {
    html {
        font-size: 15px;
    }
    
    section {
        padding: 80px 0;
    }
    
    .nav-menu {
        display: none;
    }
    
    .header-cta {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .concept-grid, .facilities-grid, .bbq-grid, .access-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .bbq-grid .bbq-visual {
        order: -1; /* ビジュアルを上にする */
    }
    
    .site-cards-grid {
        grid-template-columns: 1fr;
    }
    
    .site-info p {
        height: auto;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    #hero h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 575px) {
    #hero h1 {
        font-size: 2.1rem;
    }
    
    #hero p {
        font-size: 1.1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        gap: 12px;
        align-items: center;
    }
    
    .hero-actions a {
        width: 100%;
        max-width: 280px;
    }
}