/* CSS Variables */
:root {
    --primary-color: #4A90B2;
    --secondary-color: #E8F4F8;
    --accent-color: #FF7A7A;
    --text-primary: #333333;
    --text-secondary: #666666;
    --background: #FAFBFC;
    --white: #FFFFFF;
    --light-gray: #F5F7FA;
    --border-color: #E1E8ED;
    --shadow: 0 4px 12px rgba(74, 144, 178, 0.1);
    --border-radius: 12px;
    --max-width: 1200px;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    background-image: 
        radial-gradient(circle at 20px 20px, rgba(74, 144, 178, 0.03) 1px, transparent 0),
        radial-gradient(circle at 40px 40px, rgba(255, 122, 122, 0.02) 1px, transparent 0);
    background-size: 80px 80px, 120px 120px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* Header */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    flex-shrink: 0;
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    flex-shrink: 0;
}

.brand-name {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.5rem;
    font-weight: 600;
}

.brand-name a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.brand-name a:hover {
    color: #3A7A9A;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 60px 0;
}

.page-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 2.5rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-primary);
}

.content-section {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: var(--shadow);
}

.content-section h2 {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.content-section p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.content-section p:last-child {
    margin-bottom: 0;
}

.content-list {
    list-style: none;
    padding-left: 0;
}

.content-list li {
    color: var(--text-secondary);
    line-height: 1.7;
    padding: 8px 0;
    position: relative;
    padding-left: 20px;
}

.content-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.content-placeholder {
    background: var(--light-gray);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.content-placeholder p {
    color: var(--text-secondary);
    font-style: italic;
    margin-bottom: 15px;
}

.content-placeholder p:last-child {
    margin-bottom: 0;
}

/* About page specific styles */
.centered-content {
    text-align: center;
}

.about-hero {
    margin-bottom: 30px;
}

.about-illustration {
    margin: 0 auto 20px;
    display: block;
}

.vision-content, .innovation-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    text-align: left;
}

.innovation-content {
    direction: rtl;
}

.innovation-content .innovation-text {
    direction: ltr;
}

.vision-image-placeholder, .innovation-image-placeholder {
    height: 200px;
    background: var(--light-gray);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
}

.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.principle-item {
    text-align: center;
    padding: 20px;
}

.principle-item svg {
    margin-bottom: 15px;
}

.principle-item h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.principle-item p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.services-illustration {
    text-align: center;
    margin-bottom: 30px;
}

.services-illustration svg {
    max-width: 100%;
    height: auto;
}

.company-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
    text-align: left;
}

.info-item {
    background: var(--light-gray);
    padding: 20px;
    border-radius: var(--border-radius);
}

.info-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.info-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: var(--white);
    padding: 60px 0 30px;
    flex-shrink: 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Noto Serif JP', serif;
    font-size: 1.2rem;
    font-weight: 600;
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: #CCCCCC;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid #444444;
    padding-top: 30px;
    text-align: center;
    color: #CCCCCC;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

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

    .content-section {
        padding: 30px 20px;
    }

    .content-placeholder {
        padding: 30px 20px;
        min-height: 200px;
    }

    .main-content {
        padding: 40px 0;
    }

    .vision-content, .innovation-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .innovation-content {
        direction: ltr;
    }

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

    .company-info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.6rem;
    }

    .brand-name {
        font-size: 1.2rem;
    }

    .content-section {
        padding: 20px 15px;
    }

    .content-placeholder {
        padding: 20px 15px;
    }

    .main-content {
        padding: 30px 0;
    }
}