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

:root {
    /* Colors */
    --color-primary: #b8956a;
    --color-secondary: #8b7355;
    --color-accent: #d4b896;
    --color-white: #ffffff;
    --color-beige-light: #f9f7f4;
    --color-beige: #f3ede4;
    --color-beige-dark: #e8dfd3;
    --color-text-dark: #2c2c2c;
    --color-text-gray: #666666;
    --color-text-light: #999999;
    --color-line: #06c755;
    --color-instagram: #e4405f;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-family-sans: 'Noto Sans JP', sans-serif;
    --font-family-serif: 'Noto Serif JP', serif;
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

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

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

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

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

/* Image optimization */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded,
img:not([loading="lazy"]) {
    opacity: 1;
}

ul {
    list-style: none;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-alt {
    background-color: var(--color-beige-light);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition-base);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-family-serif);
    font-size: 1.2rem;
    font-weight: 600;
}

.logo-main {
    color: var(--color-text-dark);
    display: block;
    font-size: 1rem;
    letter-spacing: 0.1em;
}

.logo-sub {
    color: var(--color-primary);
    font-size: 1.5rem;
    font-style: italic;
    letter-spacing: 0.05em;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

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

.nav-cta {
    background-color: var(--color-primary);
    color: var(--color-white) !important;
    padding: 0.6rem 1.5rem !important;
    border-radius: 50px;
}

.nav-cta::after {
    display: none;
}

.nav-cta:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-text-dark);
    transition: var(--transition-base);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('../images/massage-hotel.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 100px,
            rgba(184, 149, 106, 0.03) 100px,
            rgba(184, 149, 106, 0.03) 101px
        );
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(249, 247, 244, 0.85) 0%, rgba(243, 237, 228, 0.75) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: 0 20px;
}

.hero-title {
    font-family: var(--font-family-serif);
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    display: block;
    font-size: 1rem;
    color: var(--color-primary);
    font-weight: 500;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease;
}

.hero-main {
    display: block;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text-dark);
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--color-text-gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-text-light);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    animation: fadeIn 1s ease 1s both;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollLine 2s ease infinite;
}

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

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition-base);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--color-line);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(6, 199, 85, 0.3);
}

.btn-primary:hover {
    background-color: #05b34a;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(6, 199, 85, 0.4);
}

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

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

.btn-line {
    background-color: var(--color-line);
    color: var(--color-white);
}

.btn-line:hover {
    background-color: #05b34a;
}

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

.btn-phone:hover {
    background-color: var(--color-secondary);
}

.btn-instagram {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    color: var(--color-white);
}

.btn-instagram:hover {
    opacity: 0.9;
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-label {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--color-primary);
    letter-spacing: 0.2em;
    font-weight: 500;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.section-title {
    font-family: var(--font-family-serif);
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.section-description {
    font-size: 1.1rem;
    color: var(--color-text-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ============================================
   Concept Section
   ============================================ */
.concept-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.concept-heading {
    font-family: var(--font-family-serif);
    font-size: 1.6rem;
    color: var(--color-text-dark);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.concept-paragraph {
    color: var(--color-text-gray);
    margin-bottom: 1.5rem;
    line-height: 2;
}

.concept-paragraph strong {
    color: var(--color-primary);
    font-weight: 600;
}

.concept-image {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

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

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

.image-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, var(--color-beige) 0%, var(--color-beige-dark) 100%);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.image-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.image-placeholder p {
    font-size: 1.1rem;
    font-weight: 500;
}

.concept-philosophy {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: 20px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.05);
}

.philosophy-title {
    font-family: var(--font-family-serif);
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-dark);
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

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

.philosophy-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 2rem;
}

.philosophy-item h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--color-text-dark);
}

.philosophy-item p {
    color: var(--color-text-gray);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ============================================
   Service Section
   ============================================ */
.service-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.service-card {
    background-color: var(--color-white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    transition: var(--transition-base);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.service-image {
    position: relative;
    overflow: hidden;
    height: 300px;
}

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

.service-card:hover .service-image img {
    transform: scale(1.1);
}

.service-image .image-placeholder {
    aspect-ratio: 16/10;
    border-radius: 0;
}

.service-content {
    padding: 2rem;
}

.service-title {
    font-family: var(--font-family-serif);
    font-size: 1.6rem;
    color: var(--color-text-dark);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.service-subtitle {
    color: var(--color-primary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.service-description {
    color: var(--color-text-gray);
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-gray);
    font-size: 0.95rem;
}

.service-features i {
    color: var(--color-primary);
    font-size: 0.8rem;
}

/* ============================================
   Reason Section
   ============================================ */
.reason-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.reason-card {
    background-color: var(--color-white);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.06);
    text-align: center;
    position: relative;
    transition: var(--transition-base);
}

.reason-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.1);
}

.reason-number {
    position: absolute;
    top: -15px;
    right: 20px;
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-beige);
    font-family: var(--font-family-serif);
}

.reason-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.8rem;
}

.reason-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text-dark);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.reason-description {
    color: var(--color-text-gray);
    font-size: 0.95rem;
    line-height: 1.8;
}

/* ============================================
   Access Section
   ============================================ */
.access-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.access-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
}

.info-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.info-text h4 {
    font-size: 0.9rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.info-text p {
    color: var(--color-text-gray);
    line-height: 1.8;
}

.info-text a {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 1.2rem;
}

.info-text a:hover {
    text-decoration: underline;
}

.closed-day {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

.access-map {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.access-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.access-map .map-placeholder {
    aspect-ratio: 1;
    background: linear-gradient(135deg, var(--color-beige) 0%, var(--color-beige-dark) 100%);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.access-map .map-placeholder small {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--color-text-gray);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.contact-card {
    background-color: var(--color-beige-light);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    transition: var(--transition-base);
    position: relative;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
}

.contact-primary h3,
.contact-primary p {
    color: var(--color-white);
}

.contact-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--color-line);
    color: var(--color-white);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.contact-card:not(.contact-primary) .contact-icon {
    background-color: var(--color-white);
    color: var(--color-primary);
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.contact-card p {
    color: var(--color-text-gray);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 0.95rem;
}

.contact-card .btn {
    width: 100%;
    justify-content: center;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background-color: var(--color-text-dark);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    font-family: var(--font-family-serif);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-logo .logo-sub {
    font-size: 2rem;
}

.footer-text {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.footer-social {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.footer-social a {
    width: 45px;
    height: 45px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    transition: var(--transition-base);
}

.footer-social a:hover {
    background-color: var(--color-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

/* ============================================
   Floating Action Buttons
   ============================================ */
.floating-buttons {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    z-index: 999;
}

.float-btn {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    color: var(--color-white);
    font-weight: 600;
    transition: var(--transition-base);
    animation: floatIn 0.5s ease;
}

.float-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.float-line {
    background-color: var(--color-line);
}

.float-phone {
    background-color: var(--color-primary);
}

.float-btn i {
    font-size: 1.5rem;
}

@keyframes floatIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet (768px and below) */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    /* Navigation */
    .menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--color-white);
        flex-direction: column;
        padding: 2rem;
        gap: 1rem;
        transition: var(--transition-base);
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu a {
        width: 100%;
        text-align: center;
        padding: 1rem;
        border-bottom: 1px solid var(--color-beige);
    }
    
    .nav-cta {
        margin-top: 1rem;
    }
    
    /* Hero */
    .hero {
        min-height: 500px;
    }
    
    .hero-main {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Concept */
    .concept-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .philosophy-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Service */
    .service-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .service-features {
        grid-template-columns: 1fr;
    }
    
    /* Reason */
    .reason-grid {
        grid-template-columns: 1fr;
    }
    
    /* Access */
    .access-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    /* Contact */
    .contact-methods {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Floating buttons */
    .floating-buttons {
        bottom: 10px;
        right: 10px;
        left: 10px;
        flex-direction: row;
        justify-content: space-between;
    }
    
    .float-btn {
        flex: 1;
        justify-content: center;
        padding: 0.8rem 1rem;
    }
    
    .float-btn span {
        font-size: 0.9rem;
    }
}

/* Mobile (480px and below) */
@media (max-width: 480px) {
    .section {
        padding: var(--spacing-md) 0;
    }
    
    .hero-main {
        font-size: 1.6rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .float-btn span {
        display: none;
    }
    
    .float-btn {
        width: 60px;
        height: 60px;
        padding: 0;
        justify-content: center;
        border-radius: 50%;
    }
    
    .floating-buttons {
        gap: 0.5rem;
    }
}