/* ==================================== */
/* layout.css: 共通コンポーネント (Updated) */
/* ==================================== */

/* --- 1. Header --- */
.header {
    background-color: rgba(25, 25, 25, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 20px 0;
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 2000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.logo img { height: 50px; }

.nav ul {
    display: flex;
    gap: 25px;
}

.nav ul li a {
    color: var(--text-light);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    font-weight: 600;
    text-transform: uppercase;
    transition: 0.3s;
}

.nav ul li a:hover { color: var(--mono-silver); }

/* --- 2. Page Hero (下層ページ共通) --- */
.page-hero {
    /* padding-top: ヘッダー被りを防ぐため、SP:180px 〜 PC:220px で可変 */
    padding-top: clamp(180px, 20vw, 220px);
    /* padding-bottom: SP:60px 〜 PC:100px で可変 */
    padding-bottom: clamp(60px, 10vw, 100px);
    background: linear-gradient(
        to bottom, 
        rgba(25, 25, 25, 0.95) 0%, 
        rgba(25, 25, 25, 0.7) 100%
    );
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    text-align: center;
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-hero-title {
    /* font-size: SP:2rem(32px) 〜 PC:3.2rem(51.2px) で滑らかに縮小・拡大 */
    font-size: clamp(2rem, 6vw, 3.2rem);
    /* margin-bottom: SP:15px 〜 PC:20px で可変 */
    margin-bottom: clamp(15px, 3vw, 20px);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-weight: 800;
    line-height: 1.2;
    order: 1;
}

.page-hero-lead {
    /* font-size: SP:0.95rem 〜 PC:1.05rem で可変 */
    font-size: clamp(0.95rem, 2.5vw, 1.05rem);
    max-width: 500px;
    margin: 0 auto;
    color: var(--text-muted);
    /* 行間は高級感を保つため2を維持し、スマホで文字が詰まる場合は自動で調整される */
    line-height: clamp(1.6, 3vw, 2); 
    padding: 0 20px;
    order: 2;
    overflow-wrap: break-word;
    margin-top: 30px; 
    font-weight: 700; 
    letter-spacing: 0.1em;
}

/* section-tagをタイトルの下に持ってくるための設定 */
.page-hero .section-tag {
    order: 3;
    /* margin-top: SP:20px 〜 PC:30px で可変 */
    margin-top: clamp(20px, 4vw, 30px);
    font-size: 0.75rem;
    letter-spacing: 0.3em;
}

/* --- 3. Content Wrapper & Glass Card --- */
.content-wrapper {
    background-color: rgba(255, 255, 255, 0.05); 
    padding: 100px 0;
    min-height: 60vh;
}

.glass-card {
    max-width: 1100px;
    margin: 0 auto;
    background: var(--glass-white); 
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
    padding: 26px 30px;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(248, 248, 248, 0.7);
}

.card-body {
    padding: 50px 40px 60px; /* 余白を微調整してゆとりを持たせました */
}

/* --- 4. Buttons (サイズ統一版) --- */
.btn-group {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: center;
    margin-top: 40px;
}

.btn-primary, 
.btn-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 280px;
    height: 60px;
    padding: 0 30px;
    box-sizing: border-box; 
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    transition: 0.3s ease;
    border-radius: 0; 
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--primary-blue);
    color: #fff;
    border-color: var(--primary-blue);
}

.btn-primary:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-dark);
    border-color: var(--text-dark);
}

.btn-ghost:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

/* --- 5. Footer --- */
.footer {
    background: var(--bg-dark);
    padding: 40px 0;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.social-links a {
    font-size: 1.5rem;
    margin-left: 20px;
    transition: 0.3s;
}

.social-links a:hover { color: var(--primary-blue); }

/* --- 6. Responsive --- */
@media (max-width: 768px) {
    /* ヘッダーの物理的な高さを圧縮 */
    .header { padding: 12px 0; }
    .header .container {
        flex-direction: column;
        gap: 8px; /* ロゴとナビの隙間を詰める */
    }

    .nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 6px 15px; /* 縦横の隙間を最小限に */
        max-width: 100%;
    }
    .nav ul li a {
        font-size: 0.75rem;
        letter-spacing: 1px;
    }

    /* 重要: ヘッダーが伸びた分、padding-topを増やして被りを回避 */
    .page-hero {
        padding-top: 180px; 
        padding-bottom: 60px;
    }
    .page-hero-title {
        font-size: 2rem;
        margin-bottom: 15px;
    }
    .page-hero-lead {
        font-size: 0.95rem;
        padding: 0 15px;
    }
    .page-hero .section-tag {
        margin-top: 20px;
    }
    .card-body {
        padding: 50px 20px 60px; /* 余白を微調整してゆとりを持たせました */
    }

    .btn-group {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }
    .btn-primary, .btn-ghost {
        width: 100%;
        max-width: 400px;
        height: 54px; /* モバイルは少しスリムに */
    }

    .footer .container {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
    .right-footer-group {
        flex-direction: column;
        gap: 15px;
    }
    .footer-links a {
        margin: 0 10px;
    }
}