/* ===============================================
   Layout - レイアウト関連スタイル
   =============================================== */

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
}

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

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

.nav-list {
    list-style: none;
    display: flex;
    gap: 24px;
}

.nav-list a {
    text-decoration: none;
    color: var(--color-text-dark);
    font-weight: 400;
    transition: color var(--transition-normal);
    font-size: 15px;
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-dark);
    transition: all var(--transition-normal);
}

/* Footer */
.footer {
    background: var(--color-text-dark);
    color: var(--color-background);
    padding: 60px 0 20px;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-background);
}

.footer-logo p {
    font-size: 16px;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.8);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 15px;
    transition: color var(--transition-normal);
}

.footer-links a:hover {
    color: var(--color-background);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    background: var(--color-background);
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--color-text-dark);
    margin-bottom: 32px;
    line-height: 1.3;
    position: relative;
}

.hero-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-primary);
    margin: 24px auto 0;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-text-dark);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
    font-weight: 400;
}

/* Banner Section */
.banner-section {
    padding: 40px 0;
    background: var(--color-background);
}

.banner-image {
    width: 100%;
    height: auto;
    max-width: var(--container-max-width);
    max-height: 600px;
    object-fit: cover;
    border-radius: var(--border-radius-medium);
    box-shadow: var(--shadow-card);
}

/* Grid Layouts */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 32px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 32px;
}

.solution-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

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

/* Responsive Layout */
@media (max-width: 1023px) {
    .nav-list {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    /* Grid adjustments for tablet */
    .product-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-list {
        grid-template-columns: 1fr;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
    }
    
    .benefit-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 767px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 28px;
        margin-bottom: 24px;
    }
    
    .hero-subtitle {
        font-size: 16px;
        line-height: 1.6;
    }
    
    .banner-section {
        padding: 30px 0;
    }
    
    .banner-image {
        border-radius: var(--border-radius-small);
    }
}