:root {
    --primary-color: #0056b3;
    /* Deep Blue */
    --primary-light: #337ab7;
    --primary-dark: #003d80;
    --accent-color: #00a8cc;
    /* Cyan/Bright Blue */
    --bg-color: #ffffff;
    --bg-light: #e6f0fa;
    /* Very Light Blue */
    --text-color: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --border-color: #dddddd;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --max-width: 1200px;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.05em;
}

.nav-list {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav-list a {
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-list a:hover {
    color: var(--primary-color);
}

.btn-contact {
    background-color: var(--primary-color);
    color: var(--white) !important;
    padding: 10px 20px;
    border-radius: 50px;
    transition: background-color 0.3s ease;
}

.btn-contact:hover {
    background-color: var(--primary-dark) !important;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    position: absolute;
    left: 0;
    transition: all 0.3s ease;
}

.mobile-menu-btn span:nth-child(1) {
    top: 0;
}

.mobile-menu-btn span:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.mobile-menu-btn span:nth-child(3) {
    bottom: 0;
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 600px;
    background-image: linear-gradient(rgba(0, 86, 179, 0.6), rgba(0, 40, 80, 0.7)), url('suberidome002.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    margin-top: 70px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.text-blue {
    color: #4db6e6;
    /* Lighter blue for contrast against dark bg */
}

.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 700;
    text-align: center;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #008cb3;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 50px;
    position: relative;
}

.section-subtitle {
    display: block;
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 400;
    margin-top: 5px;
}

/* Services */
.services {
    background-color: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.service-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* About */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-heading {
    font-size: 1.5rem;
    margin-bottom: 20px;
    line-height: 1.4;
}

.about-text p {
    margin-bottom: 15px;
    color: var(--text-light);
}

.about-image {
    flex: 1;
    height: 300px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
}

/* ASL Section */
.asl {
    background-color: var(--white);
}

.asl-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.asl-image {
    flex: 1;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.asl-text {
    flex: 1;
}

.asl-text h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    line-height: 1.4;
    color: var(--primary-color);
}

.asl-text p {
    margin-bottom: 15px;
    color: var(--text-light);
}

.asl-link-wrapper {
    margin-top: 20px;
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: var(--radius);
    text-align: center;
}

.asl-link-wrapper p {
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--primary-dark);
}

.external-link-icon {
    font-size: 0.8em;
    margin-left: 5px;
}

/* Company */
.company-table {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-collapse: collapse;
}

.company-table th,
.company-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.company-table th {
    width: 30%;
    color: var(--primary-color);
    font-weight: 700;
}

/* Contact */
.contact {
    background-color: var(--bg-light);
}

.contact-desc {
    text-align: center;
    margin-bottom: 40px;
}

.contact-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    padding: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius);
    text-align: center;
}

.contact-tel {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-info h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
    opacity: 0.9;
}

.phone-number {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.business-hours {
    font-size: 0.9rem;
    opacity: 0.8;
}

.mail-address {
    font-size: 1.5rem;
    font-weight: 500;
    word-break: break-all;
}



/* Footer */
.footer {
    background-color: #333;
    color: var(--white);
    padding: 30px 0;
    text-align: center;
}

.footer-logo {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.copyright {
    font-size: 0.8rem;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        height: 60px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav {
        position: fixed;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    .nav.active {
        transform: translateY(0);
    }

    .nav-list {
        flex-direction: column;
        gap: 20px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .about-content {
        flex-direction: column-reverse;
    }

    .contact-wrapper {
        flex-direction: column;
    }

    .company-table ttry,
    .company-table td {
        display: block;
        width: 100%;
    }

    .company-table th {
        border-bottom: none;
        padding-bottom: 5px;
    }
}