:root {
    /* Colors */
    --color-primary: #0077b6;
    /* Ocean Blue */
    --color-secondary: #00b4d8;
    /* Light Blue */
    --color-accent: #ffb703;
    /* Sun Yellow */
    --color-text: #333333;
    --color-text-light: #666666;
    --color-background: #ffffff;
    --color-background-alt: #f8f9fa;
    --color-border: #e0e0e0;

    /* Spacing */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;

    /* Typography */
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
}

/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    line-height: 1.6;
    background-color: var(--color-background);
}

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

ul {
    list-style: none;
}

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

/* Utility Classes */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.section-subtitle {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-light);
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: background 0.3s, color 0.3s;
}

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

.btn-primary:hover {
    background-color: #005f9e;
}

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

.btn-outline {
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

.center-btn {
    text-align: center;
    margin-top: var(--spacing-lg);
}

/* Header */
.header {
    background-color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-heading);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

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

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

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
}

/* Form Styles */
.form-group {
    margin-bottom: 24px;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 8px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 4px;
    /* Space between checkbox and text */
    font-weight: normal;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
}

/* Hero Section */
.hero {
    background-color: #f0f8ff;
    /* Fallback color */
    background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url('../images/hero.png');
    background-size: cover;
    background-position: center;
    color: white;
    padding: 100px 0;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    font-family: var(--font-heading);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
}

/* Services */
.card {
    background: white;
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s;
}

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

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.link-arrow {
    display: inline-block;
    margin-top: var(--spacing-md);
    color: var(--color-primary);
    font-weight: 500;
}

/* News */
.news {
    background-color: var(--color-background-alt);
}

.news-list {
    max-width: 800px;
    margin: 0 auto;
}

.news-list li {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    gap: var(--spacing-md);
}

.news-list .date {
    color: var(--color-text-light);
    font-weight: 500;
}

/* Instagram */
.instagram-widget-container {
    padding: var(--spacing-md);
    background: #f9f9f9;
    border-radius: 8px;
    text-align: center;
}

.widget-placeholder {
    padding: 40px;
    border: 2px dashed #ddd;
    color: #999;
}

/* About Summary */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-text h2 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.about-image .img-placeholder {
    width: 100%;
    height: 300px;
    background-color: #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    border-radius: 8px;
}

/* Footer */
.footer {
    background-color: #333;
    color: white;
    padding: 48px 0 24px;
    text-align: center;
}

.footer-contact {
    margin-bottom: 32px;
}

.footer-contact p {
    margin-bottom: 8px;
}

.footer-contact-info {
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 16px;
}

.line-qr {
    width: 120px;
    height: auto;
    margin: 16px auto;
    display: block;
    border-radius: 8px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-lg);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.copyright {
    color: #999;
    font-size: 0.9rem;
}

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

    .mobile-menu-toggle {
        display: flex;
    }

    .nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        padding: var(--spacing-lg);
    }

    .nav.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .grid-3 {
        grid-template-columns: 1fr;
    }

    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }
}