/* ==========================================================================
   レイアウト
   ========================================================================== */

/* コンテナ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ヘッダー */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
    letter-spacing: -0.02em;
}

.logo-tagline {
    font-size: 0.75rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: -2px;
}

.header-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.header-nav a {
    color: #334155;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.header-nav a:hover {
    color: #2563eb;
}

.header-button {
    background: #2563eb;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.header-button:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
}

/* モバイルメニューボタン（デフォルトは非表示） */
.mobile-menu-button {
    display: none;
}

/* セクション */
section {
    padding: 5rem 0;
}

section:first-of-type {
    padding-top: 8rem;
}

/* グリッド */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

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

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* フレックス */
.flex {
    display: flex;
}

.flex-center {
    justify-content: center;
    align-items: center;
}

.flex-between {
    justify-content: space-between;
}

.flex-wrap {
    flex-wrap: wrap;
}

/* スペーシング */
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 2.5rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 2.5rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }
.p-5 { padding: 2.5rem; }

/* テキスト配置 */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Footer Styles */
footer {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 60px 0 20px;
    margin-top: 80px;
    margin-left: calc(-50vw + 50%);
    margin-right: calc(-50vw + 50%);
    width: 100vw;
    position: relative;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
    align-items: start;
}

.footer-company {
    max-width: 300px;
}

.footer-logo {
    max-width: 150px;
    height: auto;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-company p {
    font-size: 16px;
    line-height: 1.6;
    opacity: 0.9;
    margin: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: 12px;
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: white;
    text-decoration: underline;
}

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

.footer-bottom p {
    margin: 0;
    font-size: 14px;
    opacity: 0.7;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    footer {
        padding: 40px 0 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-company {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .footer-links {
        gap: 20px;
    }
    
    .footer-column h4 {
        font-size: 16px;
        margin-bottom: 15px;
    }
    
    .footer-column ul li {
        margin-bottom: 10px;
    }
}