/* ================================================
   seminar.css — セミナー情報ページ専用スタイル
   A4縦チラシ対応・講話者表示対応版
================================================ */

/* ページヒーロー */
.page-hero {
    margin-top: 70px;
    background: linear-gradient(135deg, var(--color-primary-lighter) 0%, var(--color-primary-light) 60%, var(--color-accent-light) 100%);
    padding: 4rem 0 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 300"><defs><pattern id="g" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M40 0L0 0 0 40" fill="none" stroke="rgba(255,255,255,0.3)" stroke-width="1"/></pattern></defs><rect width="1200" height="300" fill="url(%23g)"/></svg>');
    opacity: 0.25;
}
.page-hero-content { position: relative; }
.page-hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.75rem;
}
.page-hero-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
}

/* メインコンテナ */
.seminar-main {
    padding: 3rem 0 5rem;
    background-color: var(--color-bg-light);
}

/* ── 固定情報カード ─────────────────────── */
.seminar-fixed-section {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--color-shadow);
    overflow: hidden;
    margin-bottom: 2.5rem;
}
.seminar-fixed-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
    padding: 1.25rem 2rem;
}
.seminar-fixed-icon {
    width: 52px;
    height: 52px;
    background: rgba(255,255,255,0.25);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    flex-shrink: 0;
}
.seminar-fixed-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin: 0;
}
.seminar-fixed-sub {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.85);
    margin: 0;
}
.seminar-fixed-body {
    padding: 1.75rem 2rem;
}
.seminar-fixed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}
.seminar-fixed-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}
.seminar-fixed-item > i {
    font-size: 1.4rem;
    color: var(--color-primary-dark);
    margin-top: 2px;
    flex-shrink: 0;
}
.seminar-fixed-item div {
    display: flex;
    flex-direction: column;
}
.item-label {
    font-size: 0.78rem;
    color: var(--color-text-light);
    font-weight: 500;
    letter-spacing: 0.05em;
}
.item-value {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-primary);
}
.seminar-fixed-note {
    background: var(--color-primary-lighter);
    border-left: 4px solid var(--color-primary);
    border-radius: 8px;
    padding: 0.75rem 1.25rem;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.seminar-fixed-note i { color: #06C755; font-size: 1.2rem; }

/* ── タブ ───────────────────────────────── */
.tab-container { margin-bottom: 2rem; }
.tab-buttons {
    display: flex;
    gap: 0.75rem;
    border-bottom: 2px solid var(--color-border);
}
.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px 8px 0 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: white;
    border: 2px solid var(--color-border);
    border-bottom: none;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-bottom: -2px;
}
.tab-btn:hover { color: var(--color-primary-dark); }
.tab-btn.active {
    color: var(--color-primary-dark);
    border-color: var(--color-primary);
    background: var(--color-primary-lighter);
    border-bottom: 2px solid var(--color-primary-lighter);
}

/* ── セミナー一覧グリッド ───────────────── */
.seminar-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
    min-height: 200px;
}

/* ================================================
   セミナーカード（A4縦チラシ対応）
================================================ */
.seminar-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 18px var(--color-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.seminar-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.13);
}

/* ── チラシ画像エリア（A4縦比率 = 1:√2 ≒ 1:1.414） */
.seminar-card-image {
    position: relative;
    width: 100%;
    /* A4縦の比率（幅:高さ = 1:1.414）を padding-top で再現 */
    padding-top: 141.4%;
    background: var(--color-primary-lighter);
    cursor: pointer;
    overflow: hidden;
}
.seminar-card-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;       /* 全体が見えるよう contain */
    object-position: center top;
    transition: transform 0.35s ease;
    padding: 4px;              /* 画像周囲に少し余白 */
    background: white;
}
.seminar-card-image:hover img { transform: scale(1.03); }

/* チラシなしプレースホルダー */
.seminar-card-image-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--color-primary-dark);
}
.seminar-card-image-placeholder i { font-size: 3rem; opacity: 0.4; }
.seminar-card-image-placeholder span { font-size: 0.85rem; color: var(--color-text-light); }

/* 拡大ヒント */
.zoom-hint {
    position: absolute;
    bottom: 10px;
    right: 12px;
    background: rgba(0,0,0,0.5);
    color: white;
    font-size: 0.72rem;
    padding: 4px 10px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 4px;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
}
.seminar-card-image:hover .zoom-hint { opacity: 1; }

/* ── カード情報エリア ─────────────────── */
.seminar-card-body {
    padding: 1.25rem 1.25rem 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

/* カテゴリバッジ */
.seminar-card-category {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    width: fit-content;
    letter-spacing: 0.03em;
}
.category-morning { background: #fff3cd; color: #856404; }
.category-other   { background: var(--color-primary-lighter); color: var(--color-primary-dark); }

/* タイトル */
.seminar-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.5;
}

/* 日時メタ情報 */
.seminar-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.seminar-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}
.seminar-card-meta i { width: 15px; color: var(--color-primary-dark); flex-shrink: 0; }

/* ── 講話者ブロック ───────────────────── */
.seminar-card-speaker {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    background: var(--color-primary-lighter);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    margin-top: 0.25rem;
}
.speaker-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--color-primary-dark);
    font-size: 1.1rem;
}
.speaker-info { display: flex; flex-direction: column; gap: 0.15rem; }
.speaker-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.speaker-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.3;
}
.speaker-title-text {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

/* ── 講話内容ブロック ─────────────────── */
.seminar-card-talk {
    border-left: 3px solid var(--color-primary);
    padding: 0.6rem 0.9rem;
    background: #fafafa;
    border-radius: 0 8px 8px 0;
    margin-top: 0.1rem;
}
.talk-label {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-primary-dark);
    letter-spacing: 0.08em;
    margin-bottom: 0.25rem;
    display: block;
}
.talk-text {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    line-height: 1.7;
    font-weight: 500;
}

/* 補足説明文 */
.seminar-card-desc {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-top: 0.25rem;
}

/* ローディング */
.loading-spinner {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--color-text-light);
    gap: 0.75rem;
}
.loading-spinner i { font-size: 2rem; color: var(--color-primary); }

/* 空メッセージ */
.empty-message {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--color-text-light);
}
.empty-message i { font-size: 3rem; margin-bottom: 1rem; display: block; }

/* ================================================
   チラシモーダル（A4縦最適化）
================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.82);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.modal-overlay.open { display: flex; }

.modal-box {
    position: relative;
    background: white;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 16px 60px rgba(0,0,0,0.5);
    display: flex;
    flex-direction: column;
    /* A4縦最大幅：画面高さの90%をA4比率で逆算した幅 */
    max-height: 94vh;
    width: min(520px, 90vw);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--color-primary-lighter);
    border-bottom: 1px solid var(--color-primary-light);
    flex-shrink: 0;
}
.modal-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: calc(100% - 48px);
}
.modal-close {
    width: 36px;
    height: 36px;
    background: rgba(0,0,0,0.1);
    color: var(--color-text-primary);
    border-radius: 8px;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    flex-shrink: 0;
    transition: background 0.2s;
}
.modal-close:hover { background: rgba(0,0,0,0.2); }

/* 画像ラッパー：A4縦スクロール対応 */
.modal-image-wrap {
    overflow-y: auto;
    overflow-x: hidden;
    flex: 1;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    background: #f5f5f5;
    padding: 0.5rem;
}
.modal-image-wrap img {
    display: block;
    width: 100%;
    height: auto;        /* A4縦全体を表示：縦スクロール */
    object-fit: contain;
    border-radius: 4px;
}

/* ── レスポンシブ ────────────────────────── */
@media screen and (max-width: 768px) {
    .page-hero-title  { font-size: 2rem; }
    .seminar-fixed-body { padding: 1.25rem; }
    .seminar-fixed-grid { grid-template-columns: 1fr 1fr; }
    .seminar-list { grid-template-columns: 1fr; }
    .tab-btn { padding: 0.6rem 1rem; font-size: 0.9rem; }
    .seminar-fixed-header { padding: 1rem 1.25rem; }
    .modal-box { width: 95vw; }
}
@media screen and (max-width: 480px) {
    .seminar-fixed-grid { grid-template-columns: 1fr; }
}