/* デザインの根幹 */
:root {
    --main-blue: #0056b3;
    --bg-gradient: linear-gradient(135deg, #004e92, #000428);
    --card-bg: #ffffff;
}

.blog-page-wrapper {
    background: var(--bg-gradient);
    display: flex;
    justify-content: center;
    padding: 20px 0;
    min-height: calc(100vh - 60px);
}

.phone-container {
    width: 100%;
    max-width: 400px;
    background-color: #f8f9fa;
    min-height: 80vh;
    box-shadow: 0 0 50px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.blog-header {
    background-color: var(--main-blue);
    color: white;
    padding: 15px;
    text-align: center;
    font-weight: bold;
}

.timeline { padding: 15px; }

.blog-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 25px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.post-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.post-content { padding: 15px; }
.post-date { font-size: 0.85rem; color: var(--main-blue); font-weight: bold; display: block; }
.post-description { font-size: 0.95rem; color: #333; line-height: 1.6; white-space: pre-wrap; }

/* 投稿ボタン (FAB) */
.fab {
    position: fixed;
    bottom: 30px;
    right: calc(50% - 180px);
    width: 60px; height: 60px;
    background-color: var(--main-blue);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: white !important; font-size: 30px; text-decoration: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
    z-index: 1000;
}

/* モーダル関連 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.85);
    z-index: 2000;
    justify-content: center; align-items: center;
}

@media (max-width: 400px) {
    .fab { right: 20px; }
}