@charset "utf-8";
/*
 * Navigation.css - ナビゲーション専用スタイル
 * 軸馬先生テーマ - LPデザイン統合版 Ver 3.0
 * 新ブランドカラー・グラデーション・フラットデザイン対応
 */

/* ===== ブランドカラー定義 ===== */
:root {
    --royal-blue: #1E3A8A;
    --deep-navy: #0F172A;
    --gold: #F59E0B;
    --crystal-blue: #3B82F6;
    --pure-white: #FFFFFF;
    --light-gray: #F8F9FA;
}

/* ===== PC版グローバルナビゲーション ===== */
@media (min-width: 769px) {
    .site-header {
        background: linear-gradient(135deg, var(--royal-blue) 0%, var(--deep-navy) 100%);
        border-bottom: 2px solid var(--gold);
        box-shadow: 0 4px 20px rgba(30, 58, 138, 0.3);
        position: relative;
        overflow: hidden;
    }
    
    /* ヘッダー背景にペガサスパターン */
    .site-header::before {
        content: '';
        position: absolute;
        top: 0;
        right: -5%;
        width: 30%;
        height: 100%;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M50 10c-10 0-20 10-20 20v20l20 10 20-10V30c0-10-10-20-20-20z" fill="rgba(251,191,36,0.03)"/></svg>') repeat;
        opacity: 0.4;
        z-index: 1;
    }
    
    .site-header .container {
        max-width: 1400px;
        padding: 0 40px;
        position: relative;
        z-index: 2;
    }
    
    .header-container {
        display: flex;
        justify-content: space-between;
        align-items: center;
        min-height: 80px;
    }
    
    /* ===== ロゴエリア強化 ===== */
    .site-logo {
        color: var(--pure-white);
        text-decoration: none;
        display: flex;
        align-items: center;
        gap: 12px;
        transition: all 0.3s ease;
        font-size: 28px;
        font-weight: 700;
        order: 1;
    }
    
    .site-logo:hover {
        transform: translateY(-2px);
        filter: drop-shadow(0 4px 12px rgba(245, 158, 11, 0.4));
    }
    
    .pegasus-icon {
        width: 48px;
        height: 48px;
        background: linear-gradient(135deg, var(--gold), #FBBF24);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 24px;
        box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
        transition: all 0.3s ease;
        border: 2px solid rgba(255, 255, 255, 0.2);
    }
    
    .site-logo:hover .pegasus-icon {
        transform: scale(1.1) rotate(5deg);
        box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
    }
    
    /* ===== メインナビゲーション ===== */
    .main-nav {
        display: flex;
        gap: 8px;
        order: 2;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50px;
        padding: 8px;
        backdrop-filter: blur(15px);
        border: 1px solid rgba(255, 255, 255, 0.15);
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }
    
    .nav-link {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 12px 20px;
        border-radius: 25px;
        transition: all 0.3s ease;
        font-weight: 500;
        font-size: 15px;
        border: 2px solid transparent;
        position: relative;
        overflow: hidden;
        color: var(--pure-white);
        text-decoration: none;
        white-space: nowrap;
        background: transparent;
    }
    
    /* ホバー時のグラデーション効果 */
    .nav-link::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.2), transparent);
        transition: left 0.5s ease;
        z-index: -1;
    }
    
    .nav-link:hover::before {
        left: 100%;
    }
    
    .nav-link:hover {
        background: linear-gradient(135deg, var(--gold), #FBBF24);
        color: var(--deep-navy);
        border-color: var(--gold);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
        font-weight: 600;
    }
    
    /* 現在ページのハイライト */
    .nav-link.current-page {
        background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(251, 191, 36, 0.2));
        border: 2px solid var(--gold);
        color: var(--gold);
        font-weight: 600;
        box-shadow: 0 4px 15px rgba(245, 158, 11, 0.2);
    }
    
    .nav-link.current-page:hover {
        background: linear-gradient(135deg, var(--gold), #FBBF24);
        color: var(--deep-navy);
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
    }
    
    /* ナビリンクのフォーカス状態 */
    .nav-link:focus {
        outline: 2px solid var(--gold);
        outline-offset: 2px;
    }
    
    /* 特別なナビリンク（料金ページ） */
    .nav-link[href*="pricing"] {
        background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(251, 191, 36, 0.15));
        border: 1px solid rgba(245, 158, 11, 0.3);
        color: var(--gold);
        font-weight: 600;
        animation: subtle-pulse 3s ease-in-out infinite;
    }
    
    .nav-link[href*="pricing"]:hover {
        background: linear-gradient(135deg, var(--gold), #FBBF24);
        color: var(--deep-navy);
        animation: none;
    }
    
    @keyframes subtle-pulse {
        0%, 100% {
            box-shadow: 0 4px 15px rgba(245, 158, 11, 0.2);
        }
        50% {
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
        }
    }
    
    /* ナビゲーション全体のアニメーション */
    .main-nav {
        animation: nav-slide-in 0.8s ease-out;
    }
    
    @keyframes nav-slide-in {
        from {
            opacity: 0;
            transform: translateY(-15px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* ===== 大画面対応（1600px以上） ===== */
@media (min-width: 1600px) {
    .site-header .container {
        max-width: 1600px;
        padding: 0 60px;
    }
    
    .site-logo {
        font-size: 32px;
    }
    
    .pegasus-icon {
        width: 52px;
        height: 52px;
        font-size: 28px;
    }
    
    .nav-link {
        padding: 14px 24px;
        font-size: 16px;
    }
}

/* ===== タブレット対応（769px-1024px） ===== */
@media (min-width: 769px) and (max-width: 1024px) {
    .site-header .container {
        padding: 0 30px;
    }
    
    .site-logo {
        font-size: 24px;
    }
    
    .pegasus-icon {
        width: 44px;
        height: 44px;
        font-size: 22px;
    }
    
    .nav-link {
        padding: 10px 16px;
        font-size: 14px;
        gap: 6px;
    }
    
    .main-nav {
        gap: 4px;
        padding: 6px;
    }
}

/* ===== モバイル時のヘッダー（768px以下） ===== */
@media (max-width: 768px) {
    .site-header {
        background: linear-gradient(135deg, var(--royal-blue) 0%, var(--deep-navy) 100%);
        border-bottom: 2px solid var(--gold);
        box-shadow: 0 2px 15px rgba(30, 58, 138, 0.3);
    }
    
    .site-header::before {
        width: 50%;
        opacity: 0.2;
    }
    
    .main-nav {
        display: none; /* モバイルメニューは別途実装予定 */
    }
    
    .site-header .container {
        padding: 0 20px;
    }
    
    .header-container {
        justify-content: center;
        padding: 15px 0;
        min-height: 70px;
    }
    
    .site-logo {
        font-size: 24px;
        order: 1;
    }
    
    .pegasus-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
}

/* ===== アクセシビリティ改善 ===== */

/* キーボードナビゲーション強化 */
.nav-link:focus-visible {
    outline: 3px solid var(--gold);
    outline-offset: 3px;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(251, 191, 36, 0.2));
}

/* 高コントラストモード対応 */
@media (prefers-contrast: high) {
    .site-header {
        background: var(--deep-navy) !important;
        border-bottom: 3px solid var(--gold);
    }
    
    .main-nav {
        background: rgba(255, 255, 255, 0.3) !important;
        border: 2px solid var(--pure-white);
    }
    
    .nav-link {
        border: 2px solid var(--pure-white) !important;
        color: var(--pure-white) !important;
    }
    
    .nav-link:hover,
    .nav-link.current-page {
        background: var(--gold) !important;
        color: var(--deep-navy) !important;
        border-color: var(--gold) !important;
    }
}

/* モーションを控えめにする設定 */
@media (prefers-reduced-motion: reduce) {
    .main-nav,
    .nav-link,
    .site-logo,
    .pegasus-icon {
        animation: none !important;
        transition: none !important;
    }
    
    .nav-link::before {
        display: none;
    }
    
    .nav-link:hover,
    .site-logo:hover {
        transform: none !important;
    }
}

/* ===== スクロール時のヘッダー変化 ===== */
.site-header.scrolled {
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.95) 0%, rgba(15, 23, 42, 0.95) 100%);
    backdrop-filter: blur(20px);
    box-shadow: 0 4px 25px rgba(30, 58, 138, 0.4);
}

.site-header.scrolled::before {
    opacity: 0.2;
}

/* ===== ロード時のアニメーション ===== */
.site-header {
    animation: header-fade-in 1s ease-out;
}

@keyframes header-fade-in {
    from {
        opacity: 0;
        transform: translateY(-100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== ホバーエフェクト詳細調整 ===== */
.nav-link {
    position: relative;
    z-index: 1;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.current-page::after {
    width: 80%;
}

/* ===== パフォーマンス最適化 ===== */
.site-header {
    will-change: transform;
    contain: layout style paint;
}

.nav-link {
    will-change: transform, background-color;
}

.pegasus-icon {
    will-change: transform;
}