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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Colors */
:root {
    --line-green: #00C300;
    --dark-gray: #2C2C2C;
    --light-gray: #F8F9FA;
    --text-color: #333333;
    --white: #FFFFFF;
    --gradient-start: #00C300;
    --gradient-end: #00A000;
}

.text-line-green {
    color: var(--line-green);
}

.text-gradient {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Header */
.lineconnect-lp-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.nav-logo i {
    font-size: 2rem;
    margin-right: 0.5rem;
}

.lineconnect-lp-logo-image {
    width: 30px;
    height: 30px;
    margin-right: 0.5rem;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--line-green);
}

.cta-button {
    background: var(--line-green);
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: var(--gradient-end);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23000" opacity="0.02"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hero-content {
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out;
}

.hero-title .secondary{
    font-size: 2.5rem;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #666;
    margin-bottom: 2.5rem;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--line-green), var(--gradient-end));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 195, 0, 0.3);
}

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

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

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

.btn-outline {
    background: transparent;
    color: var(--line-green);
    border: 2px solid var(--line-green);
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
}

.hero-image-container {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.floating-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    animation: float 6s ease-in-out infinite;
}

.hero-scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #666;
    animation: bounce 2s infinite;
}

.hero-scroll i {
    margin-top: 0.5rem;
}

/* Sections */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

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

.feature-icon {
    width: 94px;
    height: 94px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.5rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

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

/* usecases Section */
.usecases {
    padding: 6rem 0;
    background: var(--light-gray);
}

.usecases-grid {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.usecases-item {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
    padding-inline: clamp(1rem, 3vw, 3rem);
}

.usecases-item:nth-child(even) {
    direction: rtl;
}

.usecases-item:nth-child(even) > * {
    direction: ltr;
}

.usecases-image {
    position: relative;
}

.usecases-image img {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}

.usecases-content h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.usecases-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.usecases-content ul {
    list-style: none;
}

.usecases-content li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 2rem;
}

.usecases-content li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--line-green);
    font-weight: bold;
}
/* Demo Site Section */
.demo-site {
    padding: 6rem 0;
    background: var(--white);
}

.demosite-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.demosite-item {
    display: grid;
    grid-template-rows: 1fr auto;
    align-items: center;
    gap: 2rem;
}
.demosite-image {
    position: relative;
}
.demosite-content{
    text-align: center;
}

.demosite-image img {
    width: 100%;
    height: 100%;                        /* 親の grid 行高さに合わせる */
    object-fit: cover;  
    border-radius: 15px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
}
.demosite-content h3 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.demosite-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.7;
}
/* How It Works Section */
.how-it-works {
    padding: 6rem 0;
    background: var(--white);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

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

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--line-green), var(--gradient-end));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    margin: 0 auto 2rem;
}

.step-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.step-content p {
    color: #666;
    line-height: 1.7;
}

/* FAQ Section */
.faq {
    padding: 6rem 0;
    background: var(--light-gray);
}

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

.lineconnect-lp-faq-item {
    background: white;
    border-radius: 15px;
    margin-bottom: 1rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    transition: all 0.3s ease;
}

.lineconnect-lp-faq-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.lineconnect-lp-faq-question {
    padding: 2rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}

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

.lineconnect-lp-faq-question h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
    flex: 1;
    padding-right: 1rem;
}

.lineconnect-lp-faq-question i {
    color: var(--line-green);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.lineconnect-lp-faq-item.active .lineconnect-lp-faq-question i {
    transform: rotate(180deg);
}

.lineconnect-lp-faq-item.active .lineconnect-lp-faq-question {
    border-bottom-color: #eee;
    background: var(--light-gray);
}

.lineconnect-lp-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    background: white;
}

.lineconnect-lp-faq-item.active .lineconnect-lp-faq-answer {
    max-height: 500px;
    padding: 1rem 2rem 2rem;
}

.lineconnect-lp-faq-answer p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 1rem;
}

.lineconnect-lp-faq-answer p:last-child {
    margin-bottom: 0;
}

.lineconnect-lp-faq-answer ol,
.lineconnect-lp-faq-answer ul {
    color: #666;
    line-height: 1.7;
    margin: 1rem 0;
    padding-left: 2rem;
}

.lineconnect-lp-faq-answer li {
    margin-bottom: 0.5rem;
}

.lineconnect-lp-faq-answer ol li {
    list-style-type: decimal;
}

.lineconnect-lp-faq-answer ul li {
    list-style-type: disc;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--dark-gray), #1a1a1a);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* Footer */
.lineconnect-lp-footer {
    background: var(--dark-gray);
    color: white;
    padding: 3rem 1rem 1rem 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 600;
    gap: 1rem;
}

.footer-logo i {
    font-size: 2rem;
    margin-right: 0.5rem;
}

.footer-logo-image {
    width: 100px;
    height: 100px;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--line-green);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #444;
    opacity: 0.7;
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .usecases-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .usecases-item:nth-child(even) {
        direction: ltr;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    .lineconnect-lp-faq-question {
        padding: 1.5rem;
    }
    
    .lineconnect-lp-faq-question h3 {
        font-size: 1.1rem;
    }
    
    .lineconnect-lp-faq-item.active .lineconnect-lp-faq-answer {
        padding: 0 1.5rem 1.5rem;
    }
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .feature-card {
        padding: 2rem;
    }
    
    .benefit-content h3 {
        font-size: 1.5rem;
    }
}

/* Screenshots Section */
.screenshots {
    padding: 6rem 0;
    background: var(--light-gray);
}

.screenshot-carousel-wrapper {
    position: relative;
    padding: 0 50px; /* Space for nav buttons */
}

.screenshot-carousel {
    display: flex;
    overflow-x: scroll;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch; /* for smooth scrolling on iOS */
    scrollbar-width: none; /* Firefox */
    gap: 2rem; /* Use gap instead of margin */
    padding-bottom: 1rem; /* Space for scrollbar on some browsers */
}

.screenshot-carousel::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.screenshot-slide {
    flex: 0 0 80%; /* Adjust as needed for visible slides */
    scroll-snap-align: center;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.screenshot-slide:hover {
    transform: scale(1.02);
}

.screenshot-slide img {
    width: 100%;
    height: auto;
    display: block;
}

.screenshot-caption {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--dark-gray);
}

.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    color: var(--dark-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-nav:hover {
    background: var(--line-green);
    color: white;
}

.carousel-nav.prev {
    left: 0;
}

.carousel-nav.next {
    right: 0;
}

/* Lightbox Modal */
.lightbox-modal {
    display: none; /* Hidden by default */
    position: fixed; /* Stay in place */
    z-index: 2000; /* Sit on top */
    padding-top: 60px; /* Location of the box */
    left: 0;
    top: 0;
    width: 100%; /* Full width */
    height: 100%; /* Full height */
    overflow: auto; /* Enable scroll if needed */
    background-color: rgba(0,0,0,0.9); /* Black w/ opacity */
}

.lightbox-content {
    margin: auto;
    display: block;
    width: 80%;
    max-width: 1200px;
    animation-name: zoom;
    animation-duration: 0.6s;
}

@keyframes zoom {
    from {transform:scale(0)}
    to {transform:scale(1)}
}

.lightbox-close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    transition: 0.3s;
    cursor: pointer;
}

.lightbox-close:hover,
.lightbox-close:focus {
    color: #bbb;
    text-decoration: none;
    cursor: pointer;
}

@media (max-width: 768px) {
    .screenshot-carousel-wrapper {
        padding: 0 20px;
    }
    .screenshot-slide {
        flex-basis: 90%;
    }
    .carousel-nav {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    .carousel-nav.prev {
        left: 0;
    }
    .carousel-nav.next {
        right: 0;
    }
    .lightbox-content {
        width: 95%;
    }
}