/* 共通スタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー */
.header {
    background: #1a1a1a;
    color: white;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #d4af37;
    margin-bottom: 2px;
}

.logo p {
    font-size: 0.8rem;
    color: #ccc;
    font-weight: 300;
    text-align: center;
}

/* ロゴリンクスタイル */
.logo-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: opacity 0.3s ease;
}

.logo-link:hover {
    opacity: 0.8;
}

.logo-link h1,
.logo-link p {
    margin: 0;
}

.logo-link h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #d4af37;
    margin-bottom: 2px;
}

.logo-link p {
    font-size: 0.8rem;
    color: #ccc;
    font-weight: 300;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: white;
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
    padding: 10px 0;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #d4af37;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #d4af37;
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* メインコンテンツ */
main {
    margin-top: 80px;
}

/* ボタンスタイル */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

.btn-secondary {
    background: transparent;
    color: #d4af37;
    border-color: #d4af37;
}

.btn-secondary:hover {
    background: #d4af37;
    color: white;
}

.btn-outline {
    background: transparent;
    color: #333;
    border-color: #333;
}

.btn-outline:hover {
    background: #333;
    color: white;
}

/* セクション共通スタイル */
section {
    padding: 60px 0;
}

section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
    font-weight: 700;
}

/* フッター */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 30px;
}

.footer-info h3 {
    color: #d4af37;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.footer-info p {
    margin-bottom: 10px;
    color: #ccc;
}

.footer-links h4 {
    color: #d4af37;
    margin-bottom: 15px;
}

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

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #d4af37;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #999;
}

/* ページトップボタン */
#page-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: #d4af37;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    z-index: 999;
}

#page-top:hover {
    background: #b8941f;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3);
}

#page-top i {
    font-size: 1.2rem;
}

/* メッセージ通知 */
.message {
    position: fixed;
    top: 100px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 1001;
    max-width: 300px;
}

.message.show {
    transform: translateX(0);
}

.message.info {
    background: #3498db;
}

.message.success {
    background: #27ae60;
}

.message.warning {
    background: #f39c12;
}

.message.error {
    background: #e74c3c;
}

/* ローディングスピナー */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #333;
    border-top: 4px solid #d4af37;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* スクロール時のヘッダー効果 */
.header.scrolled {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
}

/* タッチデバイス用ホバー効果 */
.touch-hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: #1a1a1a;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 15px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .logo p {
        font-size: 0.7rem;
    }

    section {
        padding: 40px 0;
    }

    section h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .nav-container {
        padding: 0 15px;
    }

    .logo h1 {
        font-size: 1.3rem;
    }

    section h2 {
        font-size: 1.8rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}