/* ========================================
   Responsive Styles
======================================== */

/* Tablet and Below (768px) */
@media screen and (max-width: 768px) {
    /* Header */
    .nav {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* ロゴ画像レスポンシブ */
    .logo-image {
        height: 35px;
    }
    
    .footer-logo-image {
        height: 40px;
    }
    
    /* Hero */
    .hero-title {
        font-size: 36px;
        line-height: 1.4;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    /* Section */
    .section-title {
        font-size: 32px;
    }
    
    .section-subtitle {
        font-size: 14px;
    }
    
    /* Services */
    .services {
        padding: 60px 0;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .service-card {
        padding: 40px 30px;
    }
    
    .service-logo {
        width: 150px;
    }
    
    .service-title {
        font-size: 24px;
    }
    
    /* Philosophy */
    .philosophy {
        padding: 80px 0;
        min-height: auto;
    }
    
    .philosophy-main {
        padding: 40px 30px;
    }
    
    .philosophy-title {
        font-size: 24px;
        margin-bottom: 40px;
    }
    
    .philosophy-text p {
        font-size: 15px;
        margin-bottom: 25px;
    }
    
    /* News */
    .news {
        padding: 60px 0;
    }
    
    .news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 20px;
    }
    
    .news-date,
    .news-label {
        min-width: auto;
    }
    
    /* CTA */
    .cta {
        padding: 60px 0;
    }
    
    .cta-title {
        font-size: 28px;
    }
    
    .cta-text {
        font-size: 16px;
    }
    
    .btn-cta {
        padding: 15px 40px;
        font-size: 16px;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-nav {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* Page Header */
    .page-title {
        font-size: 32px;
    }
    
    .page-subtitle {
        font-size: 14px;
    }
    
    /* Page Content */
    .page-content {
        padding: 60px 0;
    }
    
    /* News Detail */
    .news-detail-item {
        padding: 30px 20px;
    }
    
    .news-detail-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .news-detail-title {
        font-size: 22px;
    }
}

/* Mobile (480px) */
@media screen and (max-width: 480px) {
    /* Container */
    .container {
        padding: 0 15px;
    }
    
    /* Header */
    .header-content {
        padding: 15px 0;
    }
    
    .logo-text {
        font-size: 24px;
    }
    
    /* ロゴ画像スマートフォン用 */
    .logo-image {
        height: 30px;
    }
    
    .footer-logo-image {
        height: 35px;
    }
    
    /* Hero */
    .hero {
        height: 80vh;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 14px;
        letter-spacing: 2px;
    }
    
    .scroll-indicator {
        bottom: 20px;
    }
    
    .scroll-indicator span {
        height: 40px;
    }
    
    /* Section */
    .section-title {
        font-size: 28px;
    }
    
    .section-subtitle {
        margin-bottom: 40px;
    }
    
    /* Services */
    .services {
        padding: 40px 0;
    }
    
    .services-grid {
        gap: 20px;
    }
    
    .service-card {
        padding: 30px 20px;
    }
    
    .service-logo {
        width: 120px;
    }
    
    .service-title {
        font-size: 20px;
    }
    
    .service-description {
        font-size: 14px;
    }
    
    .service-features li {
        font-size: 14px;
    }
    
    .btn-service {
        padding: 12px 30px;
        font-size: 14px;
    }
    
    /* Philosophy */
    .philosophy {
        padding: 60px 0;
        min-height: auto;
    }
    
    .philosophy-main {
        padding: 30px 20px;
    }
    
    .philosophy-title {
        font-size: 20px;
        margin-bottom: 35px;
        padding-bottom: 20px;
    }
    
    .philosophy-text p {
        font-size: 14px;
        line-height: 1.8;
        margin-bottom: 20px;
    }
    
    
    /* News */
    .news {
        padding: 40px 0;
    }
    
    .news-item {
        padding: 15px;
    }
    
    .news-date {
        font-size: 13px;
    }
    
    .news-label {
        font-size: 12px;
        padding: 4px 12px;
    }
    
    .news-title {
        font-size: 14px;
    }
    
    /* CTA */
    .cta {
        padding: 40px 0;
    }
    
    .cta-title {
        font-size: 24px;
    }
    
    .cta-text {
        font-size: 14px;
    }
    
    .btn-cta {
        padding: 12px 30px;
        font-size: 14px;
    }
    
    /* Footer */
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-logo {
        font-size: 20px;
    }
    
    .footer-company,
    .footer-address,
    .footer-contact {
        font-size: 12px;
    }
    
    .footer-nav-column h4 {
        font-size: 14px;
    }
    
    .footer-nav-column a {
        font-size: 12px;
    }
    
    .footer-bottom p {
        font-size: 12px;
    }
    
    /* Back to Top */
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 18px;
    }
    
    /* Page Header */
    .page-header {
        padding: 60px 0;
    }
    
    .page-title {
        font-size: 28px;
    }
    
    .page-subtitle {
        font-size: 12px;
    }
    
    /* Page Content */
    .page-content {
        padding: 40px 0;
    }
    
    /* News Detail */
    .news-detail-item {
        padding: 20px 15px;
    }
    
    .news-detail-title {
        font-size: 18px;
    }
    
    .news-detail-content {
        font-size: 14px;
    }
}