/* Prevent Flash of Unstyled Content (FOUC) */
html {
    visibility: hidden;
    opacity: 0;
}

html.loaded {
    visibility: visible;
    opacity: 1;
    transition: opacity 0.3s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 300;
    line-height: 1.7;
    color: #333;
    background-color: #fefefe;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Lora', serif;
    font-weight: 400;
    line-height: 1.3;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.8rem;
}

p {
    margin-bottom: 1rem;
    color: #666;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 15px;
}

@media (min-width: 769px) {
    .nav-container {
        flex-direction: row;
        justify-content: space-between;
        gap: 0;
    }
    
    .logo {
        flex: 0 0 auto;
        margin-right: auto;
    }
    
    .nav-menu {
        margin-left: auto;
    }
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.logo-image {
    height: 43px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.15));
    transition: all 0.3s ease;
}

.logo-image:hover {
    filter: drop-shadow(0 3px 6px rgba(0, 0, 0, 0.2));
    transform: translateY(-1px);
}

.logo-text {
    font-family: 'Lora', serif;
    font-size: 1.3rem;
    font-weight: 500;
    color: #333;
    letter-spacing: 2px;
    margin-bottom: 2px;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: #999;
    letter-spacing: 0.8px;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #666;
    font-weight: 300;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    letter-spacing: 0.5px;
}

.nav-menu a:hover {
    color: #d4a574;
}

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

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-bg-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.7) contrast(1.1);
    opacity: 0;
    transition: opacity 2s ease-in-out;
    transform: scale(1.05);
}

.hero-bg-img.active {
    opacity: 1;
}

.hero-bg-img.fade-out {
    opacity: 0;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.1) 50%, rgba(0, 0, 0, 0.3) 100%);
    z-index: 2;
    animation: overlayShimmer 15s ease-in-out infinite;
}

@keyframes overlayShimmer {
    0%, 100% {
        background: linear-gradient(45deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.1) 50%, rgba(0, 0, 0, 0.3) 100%);
    }
    50% {
        background: linear-gradient(45deg, rgba(0, 0, 0, 0.1) 0%, rgba(0, 0, 0, 0.05) 50%, rgba(0, 0, 0, 0.2) 100%);
    }
}

.hero-content-center {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 800px;
    padding: 0 40px;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 2rem;
    color: #fff;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.title-main {
    font-weight: 300;
    color: #fff;
}

.title-sub {
    font-weight: 500;
    color: #f5e6d3;
    font-size: 0.8em;
}

.hero-description {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 3rem;
    line-height: 1.8;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.cta-button {
    display: inline-block;
    padding: 18px 40px;
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 400;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.cta-button:hover {
    background: rgba(212, 165, 116, 0.9);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    border-color: rgba(212, 165, 116, 0.5);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 2s ease forwards;
}

.fade-in-delay {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 2s ease 0.5s forwards;
}

.fade-in-delay-2 {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 2s ease 1s forwards;
}

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

/* Section Styles */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    color: #333;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #d4a574, #e8c5a0);
}

.section-subtitle {
    font-size: 1.1rem;
    color: #999;
    max-width: 600px;
    margin: 0 auto;
}

/* Concept Section */
.concept {
    background: linear-gradient(135deg, #faf9f7 0%, #f5f1eb 100%);
}

.concept-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.concept-item {
    margin-bottom: 3rem;
}

.concept-item h3 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.concept-item p {
    color: #666;
    line-height: 1.8;
}

.concept-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* Gallery Section */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    aspect-ratio: 4/3;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.gallery-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

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

.gallery-overlay h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.gallery-overlay p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Services Section */
.services {
    background: #fefefe;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
}

.service-card {
    text-align: center;
    padding: 40px 30px;
    background: #faf9f7;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #f5f1eb, #e8ddd4);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #d4a574;
}

.service-card h3 {
    color: #333;
    margin-bottom: 1rem;
}

.service-card p {
    color: #666;
    line-height: 1.7;
}

/* Process */
.process {
    margin-top: 80px;
}

.process-title {
    text-align: center;
    font-size: 2rem;
    color: #333;
    margin-bottom: 50px;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #d4a574, #e8c5a0);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-weight: 500;
    font-size: 1.1rem;
}

.process-step h4 {
    color: #333;
    margin-bottom: 10px;
}

.process-step p {
    color: #666;
    font-size: 0.9rem;
}

/* Testimonials Section */
.testimonials {
    background: linear-gradient(135deg, #faf9f7 0%, #f5f1eb 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    align-items: stretch;
}

.testimonial-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.testimonial-card:hover {
    transform: translateY(-5px);
}

.testimonial-content {
    flex: 1;
}

.testimonial-content p {
    font-style: italic;
    color: #555;
    line-height: 1.8;
    margin-bottom: 30px;
    position: relative;
}

.testimonial-author {
    text-align: left;
}

.author-info {
    text-align: left;
}

.author-info h4 {
    color: #333;
    font-size: 1.1rem;
    margin-bottom: 5px;
    text-align: left;
}

.author-info span {
    color: #999;
    font-size: 0.9rem;
    text-align: left;
}

/* Corporate Plan Section */
.corporate-plan {
    background: linear-gradient(135deg, #f5f1eb 0%, #faf9f7 100%);
    padding: 80px 0;
}

.corporate-banner {
    background: linear-gradient(135deg, #4a90c2 0%, #6ba8d6 100%);
    border-radius: 20px;
    padding: 50px;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: center;
    color: white;
    box-shadow: 0 15px 35px rgba(74, 144, 194, 0.3);
    position: relative;
    overflow: hidden;
}

.corporate-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    z-index: 1;
}

.corporate-content {
    display: flex;
    gap: 30px;
    align-items: flex-start;
    position: relative;
    z-index: 2;
}

.corporate-icon {
    background: rgba(255, 255, 255, 0.2);
    padding: 20px;
    border-radius: 15px;
    color: white;
    flex-shrink: 0;
}

.corporate-text h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    font-weight: 500;
}

.corporate-text p {
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
}

.corporate-features {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.corporate-features li {
    padding: 8px 0;
    position: relative;
    padding-left: 20px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
}

.corporate-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: rgba(255, 255, 255, 0.8);
    font-weight: bold;
}

.corporate-cta {
    text-align: center;
    position: relative;
    z-index: 2;
}

.corporate-price {
    margin-bottom: 25px;
}

.price-label {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 5px;
    color: rgba(255, 255, 255, 0.8);
}

.price-value {
    font-size: 1.5rem;
    font-weight: 500;
    color: white;
}

.corporate-button {
    display: inline-block;
    background: rgba(255, 255, 255, 0.9);
    color: #5a9bd4;
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    margin-bottom: 15px;
    letter-spacing: 0.5px;
}

.corporate-button:hover {
    background: white;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.corporate-note {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

/* SNS Banner Section */
.sns-banner {
    background: #fefefe;
    padding: 80px 0;
}

.sns-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.sns-title {
    font-size: 2.2rem;
    color: #333;
    margin-bottom: 15px;
    font-weight: 400;
}

.sns-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.7;
}

.sns-buttons {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 30px;
}

.sns-button {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px 30px;
    border-radius: 15px;
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 200px;
}

.sns-button.instagram {
    background: linear-gradient(135deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    color: white;
}

.sns-button.twitter {
    background: linear-gradient(135deg, #1DA1F2 0%, #0d8bd9 100%);
    color: white;
}

.sns-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.sns-icon {
    flex-shrink: 0;
}

.sns-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.sns-name {
    font-weight: 500;
    font-size: 1.1rem;
    margin-bottom: 2px;
}

.sns-handle {
    font-size: 0.9rem;
    opacity: 0.8;
}

.sns-follow-text {
    margin-top: 20px;
}

.sns-follow-text p {
    color: #999;
    font-style: italic;
    font-size: 1rem;
}

/* Contact Section */
.contact {
    background: #fefefe;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info h3 {
    color: #333;
    margin-bottom: 20px;
}

.contact-info p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-item {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid #f0f0f0;
}

.contact-item strong {
    color: #333;
    font-weight: 400;
}

.contact-item span {
    color: #666;
}

/* Contact Form */
.contact-form {
    background: #faf9f7;
    padding: 40px;
    border-radius: 15px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 400;
}

.required {
    color: #d4a574;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    background: white;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #d4a574;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-button {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, #d4a574, #e8c5a0);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.5px;
}

.submit-button:hover {
    background: linear-gradient(135deg, #c19660, #d4a574);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(212, 165, 116, 0.3);
}

/* Footer */
.footer {
    background: #f5f5f5;
    color: #333;
    padding: 60px 0 30px;
}

.footer-content {
    text-align: center;
    margin-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: 8px;
    margin-bottom: 15px;
}

.footer-logo .logo-image {
    margin-top: 9px;
}

.footer .logo-text {
    color: #333;
    font-size: 1.1rem;
}

.footer .logo-subtitle {
    color: #666;
}

.footer-text {
    color: #666;
    margin-top: 15px;
    font-style: italic;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #ddd;
}

.footer-bottom p {
    color: #666;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .hero-content-center {
        padding: 40px 20px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .concept-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .process-steps {
        grid-template-columns: 1fr;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .corporate-plan {
        padding: 60px 0;
    }
    
    .sns-banner {
        padding: 60px 0;
    }
    
    .sns-title {
        font-size: 1.8rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-header {
        margin-bottom: 50px;
    }
    
    h2 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .corporate-banner {
        grid-template-columns: 1fr;
        padding: 30px 20px;
        text-align: center;
    }
    
    .corporate-content {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .corporate-features {
        grid-template-columns: 1fr;
    }
    
    .sns-buttons {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .sns-button {
        min-width: 250px;
    }
}