:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --background-color: #f8f9fa;
    --text-color: #2c3e50;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 0;
    position: relative;
}

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

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

.logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

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

.nav-links a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #ecf0f1;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    max-width: 800px;
    margin: 0 auto;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.services {
    margin-bottom: 4rem;
}

.services h2 {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2rem;
    color: var(--primary-color);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

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

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.minecraft {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="%233498db" d="M4 2h16c1.1 0 2 .9 2 2v16c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V4c0-1.1.9-2 2-2zm2 4h12v12H6V6z"/></svg>');
}

.security {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="%23e74c3c" d="M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm0 10.99h7c-.53 4.12-3.28 7.79-7 8.94V12H5V6.3l7-3.11v8.8z"/></svg>');
}

.cloud {
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="%232c3e50" d="M19.35 10.04C18.67 6.59 15.64 4 12 4 9.11 4 6.6 5.64 5.35 8.04 2.34 8.36 0 10.91 0 14c0 3.31 2.69 6 6 6h13c2.76 0 5-2.24 5-5 0-2.64-2.05-4.78-4.65-4.96z"/></svg>');
}

.service-card h3 {
    text-align: center;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.service-card ul {
    list-style: none;
    padding: 0;
}

.service-card li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.service-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

.contact {
    text-align: center;
    padding: 4rem 0;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.contact h2 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact p {
    margin-bottom: 2rem;
    color: #666;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 0 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.submit-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background-color: #2980b9;
}

.sns {
    text-align: center;
    margin: 2rem 0;
}

.sns a {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    margin: 0 1rem;
    text-decoration: none;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 5px;
    transition: all 0.3s ease;
}

.sns a:hover {
    background-color: var(--primary-color);
    color: white;
}

.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

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

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

.footer-logo img {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.footer-links ul {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: row;
        gap: 1rem;
    }

    .logo {
        font-size: 1.2rem;
    }

    .logo img {
        height: 30px;
    }

    .nav-links {
        display: flex;
        gap: 1rem;
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links ul {
        flex-direction: column;
        gap: 1rem;
    }
}
/* --- Hamburger Menu Styles --- */
.hamburger-menu {
    display: none; /* Hidden by default, shown on smaller screens */
    flex-direction: column;
    cursor: pointer;
    gap: 6px; /* Increased the gap for better visual separation */
    padding: 8px; /* Added some padding for touch-friendly interaction */
    border-radius: 5px; /* slightly rounded corners */
    transition: background-color 0.3s; /* Smooth transition on hover */
}

.hamburger-menu:hover {
    background-color: rgba(255, 255, 255, 0.1); /* Adds a subtle background on hover */
}


.hamburger-menu span {
    width: 28px; /* Slightly wider for a more robust look */
    height: 3px;
    background-color: white;
    border-radius: 2px; /* Less rounding for a modern look */
    transition: transform 0.3s, opacity 0.3s; /* Smooth transition for animation */
}

/* Hamburger Menu Animation when active (menu open) */
.hamburger-menu.active span:nth-child(1) {
    transform: translateY(9px) rotate(45deg);
}

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

.hamburger-menu.active span:nth-child(3) {
    transform: translateY(-9px) rotate(-45deg);
}

/* Adjustments for smaller screens to display the hamburger menu */
@media (max-width: 768px) {
    .hamburger-menu {
        display: flex; /* Show the hamburger menu */
    }
    
    .nav-links {
        display: none; /* Hide the navigation links */
        flex-direction: column;
        gap: 1rem;
        background-color: var(--primary-color);
        position: absolute;
        top: 60px;
        right: 0;
        width: 100%;
        padding: 1rem;
        text-align: center; /* Center align the menu items */
    }

     .nav-links li {
        padding: 0.5rem 0; /* Add padding for each link in the menu */
     }


    .nav-links.active {
        display: flex; /* Show the navigation links when active */
    }
}

.center {
    text-align: center;
}

.news {
    max-width: 1200px;  /* 800px から 1200px に拡大 */
    margin: 0 auto;
    padding: 2rem;
}

.news-container {
    max-height: 500px;
    overflow-y: auto;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 1.5rem;  /* パディングを1remから1.5remに増加 */
}

.news-item {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #eee;
}

.news-item-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.news-item-content {
    padding-left: calc(10%); /* ラベルと日付の幅分をインデント */
}

.news-label {
    min-width: 80px;
    text-align: center;
}

.news-date {
    min-width: 120px;
}

.news-item h3 {
    flex: 1;
    margin: 0;
}

@media screen and (max-width: 768px) {
    .news {
        padding: 1rem;
    }

    .news-container {
        padding: 1rem;
    }

    .news-item {
        padding: 1rem;
    }

    .news-item-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .news-item-content {
        padding-left: 0;
        margin-top: 0.5rem;
    }

    .news-label {
        min-width: auto;
        padding: 0.2rem 0.8rem;
        font-size: 0.75rem;
    }

    .news-date {
        min-width: auto;
        font-size: 0.85rem;
    }

    .news-item h3 {
        font-size: 1rem;
    }

    .news-item p {
        font-size: 0.9rem;
        line-height: 1.5;
    }
}

/* Network animation background */
.network-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, #f3f4f6 25%, transparent 25%),
                linear-gradient(-45deg, #f3f4f6 25%, transparent 25%),
                linear-gradient(45deg, transparent 75%, #f3f4f6 75%),
                linear-gradient(-45deg, transparent 75%, #f3f4f6 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    z-index: -1;
    opacity: 0.5;
}

/* Header styling */
header {
    background: linear-gradient(120deg, #2c3e50, #3498db);
    color: white;
    padding: 3rem 0;
    margin-bottom: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
    color: white;
    font-size: 2.5rem;
    margin: 0;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* Company information styling */
.company-info {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.company-info dt {
    color: #2c3e50;
    font-size: 1.2rem;
    margin-top: 2rem;
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
}

.company-info dd {
    margin: 1rem 0 2rem 0;
    padding-left: 1rem;
}

.company-info h3 {
    color: #3498db;
    font-size: 1.1rem;
    margin: 1.5rem 0 0.5rem 0;
}

.company-info ul {
    padding-left: 1.5rem;
}

.company-info li {
    margin: 0.5rem 0;
    line-height: 1.4;
}

/* Contact section styling */
.contact-info {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    margin-top: 2rem;
}

.contact-info h2 {
    color: #2c3e50;
    margin-top: 0;
    border-bottom: 2px solid #3498db;
    padding-bottom: 0.5rem;
}

.contact-info a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-info a:hover {
    color: #2c3e50;
}

/* Footer styling */
footer {
    text-align: center;
    padding: 2rem 0;
    color: #666;
    font-size: 0.9rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .company-info dt {
        font-size: 1.1rem;
    }
    
    .company-info, .contact-info {
        padding: 1.5rem;
    }
}

.news {
    padding: 2rem 0;
}

.news-container {
    display: flex;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.news-content {
    flex: 1;
    max-width: 60%;
}

.twitter-feed {
    flex: 1;
    max-width: 40%;
    min-width: 300px;
}

@media (max-width: 768px) {
    .news-container {
        flex-direction: column;
    }
    
    .news-content,
    .twitter-feed {
        max-width: 100%;
    }
}

/* Partner title style */
dt {
    font-size: 1.2em;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
    border-bottom: 2px solid #0066cc;
    padding-bottom: 5px;
}

/* Partner description style */
dd {
    margin: 0 0 20px 0;
    padding: 10px;
    background-color: #f8f8f8;
    border-radius: 4px;
}

/* Partner image container */
dd img {
    max-width: 200px;
    height: auto;
    display: block;
    margin: 10px 0;
    border: 1px solid #ddd;
    transition: transform 0.2s ease;
}

/* Image hover effect */
dd img:hover {
    transform: scale(1.05);
}

/* Partner name under image */
dd:last-child {
    text-align: center;
    font-weight: 500;
    color: #444;
}

.text-white {
    color: white;
}

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

.position {
    position: relative;
}