/* ===================================
   CSS Variables
   =================================== */
:root {
    --navy: #1a1a2e;
    --gold: #d4af37;
    --gold-light: #e6c968;
    --white: #ffffff;
    --gray-light: #f5f5f5;
    --gray: #666666;
    --gray-dark: #333333;
    
    --font-primary: 'Noto Sans JP', sans-serif;
    --font-secondary: 'Noto Serif JP', serif;
    
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--gray-dark);
    line-height: 1.8;
    background-color: var(--white);
}

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

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

ul {
    list-style: none;
}

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

/* ===================================
   Section Title
   =================================== */
.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    text-align: center;
    margin-bottom: 60px;
    color: var(--navy);
    position: relative;
    padding-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
    border-radius: 2px;
}

/* ===================================
   Buttons
   =================================== */
.btn-primary,
.btn-secondary,
.btn-header,
.btn-contact {
    display: inline-block;
    padding: 18px 40px;
    border-radius: 50px;
    font-weight: 700;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--navy);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.4);
}

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

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

.btn-header {
    background: var(--gold);
    color: var(--navy);
    padding: 12px 30px;
}

.btn-header:hover {
    background: var(--gold-light);
}

.btn-contact {
    width: 100%;
    background: var(--navy);
    color: var(--white);
    margin-bottom: 15px;
}

.btn-contact:hover {
    background: var(--gold);
    color: var(--navy);
}

.btn-contact i {
    margin-right: 10px;
}

/* ===================================
   Header
   =================================== */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--navy);
    margin-bottom: 5px;
}

.anniversary {
    font-size: 0.75rem;
    color: var(--gold);
    font-weight: 700;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.9), rgba(26, 26, 46, 0.7)),
                url('https://images.unsplash.com/photo-1566073771259-6a8506099945?w=1600&q=80') center/cover;
    color: var(--white);
    padding: 100px 0 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent, rgba(26, 26, 46, 0.5));
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-label {
    display: inline-block;
    background: var(--gold);
    color: var(--navy);
    padding: 8px 24px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 30px;
    letter-spacing: 1px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.3;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--gold-light);
}

.hero-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.hero-info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
}

.hero-info-item i {
    font-size: 1.5rem;
    color: var(--gold);
}

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

/* ===================================
   Features Section
   =================================== */
.features {
    padding: 100px 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--gray-light);
    border-radius: 20px;
    transition: var(--transition);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 30px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--navy);
}

.feature-card p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--gray);
}

/* ===================================
   Target Section
   =================================== */
.target {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--navy), #2a2a3e);
    color: var(--white);
}

.target .section-title {
    color: var(--white);
}

.target .section-title::after {
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.target-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    border: 2px solid rgba(212, 175, 55, 0.3);
    transition: var(--transition);
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.target-item:hover {
    background: rgba(212, 175, 55, 0.2);
    border-color: var(--gold);
    transform: translateY(-5px);
}

.target-item i {
    font-size: 2.5rem;
    color: var(--gold);
    margin-bottom: 15px;
}

.target-item p {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.5;
}

/* ===================================
   Program Section
   =================================== */
.program {
    padding: 100px 0;
    background: var(--gray-light);
}

.program-content {
    display: grid;
    gap: 60px;
}

.program-day {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}

.program-day-header {
    margin-bottom: 40px;
    border-bottom: 3px solid var(--gold);
    padding-bottom: 20px;
}

.day-label {
    display: inline-block;
    background: var(--gold);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.program-day-header h3 {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--navy);
}

.program-timeline {
    position: relative;
}

.timeline-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item:not(:last-child)::before {
    content: '';
    position: absolute;
    left: 75px;
    top: 40px;
    bottom: -40px;
    width: 2px;
    background: var(--gold);
    opacity: 0.3;
}

.timeline-time {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gold);
    text-align: right;
    padding-top: 5px;
}

.timeline-content h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 10px;
}

.timeline-content p {
    font-size: 1rem;
    color: var(--gray);
    line-height: 1.8;
}

/* ===================================
   Price Section
   =================================== */
.price {
    padding: 100px 0;
    background: var(--white);
}

.price-content {
    max-width: 900px;
    margin: 0 auto;
}

.price-main {
    text-align: center;
    padding: 60px 40px;
    background: linear-gradient(135deg, var(--navy), #2a2a3e);
    border-radius: 20px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.price-amount {
    color: var(--white);
    margin-bottom: 20px;
}

.price-amount .currency {
    font-size: 2rem;
    vertical-align: top;
    margin-right: 5px;
}

.price-amount .number {
    font-size: 5rem;
    font-weight: 900;
    color: var(--gold);
}

.price-amount .tax {
    font-size: 1.2rem;
    margin-left: 10px;
}

.price-note {
    color: var(--white);
    font-size: 1rem;
}

.price-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.price-detail-card {
    padding: 40px;
    background: var(--gray-light);
    border-radius: 15px;
}

.price-detail-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--navy);
    display: flex;
    align-items: center;
    gap: 10px;
}

.price-detail-card h3 i {
    font-size: 1.5rem;
}

.price-detail-card:first-child h3 i {
    color: var(--gold);
}

.price-detail-card:last-child h3 i {
    color: var(--gray);
}

.price-detail-card ul {
    list-style: none;
}

.price-detail-card li {
    padding: 12px 0 12px 30px;
    position: relative;
    font-size: 1rem;
    line-height: 1.6;
}

.price-detail-card li::before {
    content: '•';
    position: absolute;
    left: 10px;
    color: var(--gold);
    font-size: 1.5rem;
}

/* ===================================
   Venue Section
   =================================== */
.venue {
    padding: 100px 0;
    background: var(--gray-light);
}

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

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

.venue-content-single .venue-info {
    background: var(--white);
    padding: 60px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

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

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

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

.venue-info h3 {
    font-size: 2rem;
    font-weight: 900;
    color: var(--navy);
    margin-bottom: 20px;
}

.venue-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--gray);
    margin-bottom: 40px;
}

.venue-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.venue-content-single .venue-details {
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
}

.venue-detail {
    display: flex;
    gap: 20px;
}

.venue-detail i {
    font-size: 1.5rem;
    color: var(--gold);
    margin-top: 5px;
}

.venue-detail strong {
    display: block;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 5px;
}

.venue-detail p {
    font-size: 1rem;
    line-height: 1.6;
}

.venue-detail a {
    color: var(--gold);
    text-decoration: underline;
}

.venue-detail a:hover {
    color: var(--gold-light);
}

/* ===================================
   Flow Section
   =================================== */
.flow {
    padding: 100px 0;
    background: var(--white);
}

.flow-steps {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.flow-step {
    flex: 1;
    min-width: 180px;
    text-align: center;
    padding: 30px 20px;
}

.flow-number {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--white);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.flow-step h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 15px;
}

.flow-step p {
    font-size: 0.95rem;
    color: var(--gray);
    line-height: 1.6;
}

.flow-arrow {
    display: flex;
    align-items: center;
    color: var(--gold);
    font-size: 1.5rem;
    margin-top: 50px;
}

/* ===================================
   FAQ Section
   =================================== */
.faq {
    padding: 100px 0;
    background: var(--gray-light);
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 30px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--gray-light);
}

.faq-question i:first-child {
    font-size: 1.5rem;
    color: var(--gold);
}

.faq-question h3 {
    flex: 1;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--navy);
}

.faq-toggle {
    font-size: 1rem;
    color: var(--gray);
    transition: var(--transition);
}

.faq-item.active .faq-toggle {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 30px 30px 70px;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--gray);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--navy), #2a2a3e);
    color: var(--white);
}

.contact .section-title {
    color: var(--white);
}

.contact .section-title::after {
    background: linear-gradient(90deg, var(--gold), var(--gold-light));
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 40px;
    color: var(--gold);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-bottom: 40px;
}

.contact-detail {
    display: flex;
    gap: 20px;
}

.contact-detail i {
    font-size: 1.5rem;
    color: var(--gold);
    margin-top: 5px;
}

.contact-detail strong {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--gold-light);
}

.contact-detail p {
    font-size: 1rem;
    line-height: 1.6;
}

.contact-detail a {
    color: var(--white);
    text-decoration: underline;
}

.contact-detail a:hover {
    color: var(--gold);
}

.contact-note {
    display: flex;
    gap: 15px;
    padding: 25px;
    background: rgba(212, 175, 55, 0.2);
    border-left: 4px solid var(--gold);
    border-radius: 10px;
}

.contact-note i {
    font-size: 1.5rem;
    color: var(--gold);
    margin-top: 3px;
}

.contact-note p {
    font-size: 1rem;
    line-height: 1.6;
}

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

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--navy);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.footer-logo h3 {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 10px;
}

.footer-logo p {
    font-size: 0.9rem;
    color: var(--gold);
    margin-bottom: 20px;
}

.copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ===================================
   Scroll to Top Button
   =================================== */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--gold), var(--gold-light));
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(212, 175, 55, 0.5);
}

/* ===================================
   Responsive Styles
   =================================== */
.sp-only {
    display: none;
}

@media (max-width: 1024px) {
    .venue-content,
    .venue-content-single,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .venue-content-single .venue-info {
        padding: 40px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .flow-arrow {
        display: none;
    }
    
    .flow-steps {
        gap: 30px;
    }
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .sp-only {
        display: inline;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 40px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .hero {
        min-height: auto;
        padding: 80px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.3rem;
    }
    
    .hero-info {
        flex-direction: column;
        gap: 20px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .target-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .target-item {
        padding: 25px 15px;
        min-height: 150px;
    }
    
    .target-item i {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    
    .target-item p {
        font-size: 0.95rem;
    }
    
    .program-day {
        padding: 30px 20px;
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .timeline-time {
        text-align: left;
    }
    
    .timeline-item:not(:last-child)::before {
        display: none;
    }
    
    .price-amount .number {
        font-size: 3.5rem;
    }
    
    .price-details {
        grid-template-columns: 1fr;
    }
    
    .venue-content-single .venue-info {
        padding: 30px 20px;
    }
    
    .flow-steps {
        flex-direction: column;
    }
    
    .flow-step {
        min-width: 100%;
    }
    
    .faq-answer p {
        padding: 0 20px 20px 50px;
    }
    
    .contact-content {
        gap: 40px;
    }
    
    .scroll-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .logo h1 {
        font-size: 1.2rem;
    }
    
    .btn-header {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .target-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .target-item {
        padding: 20px 10px;
        min-height: 140px;
    }
    
    .target-item i {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }
    
    .target-item p {
        font-size: 0.9rem;
    }
}