:root {
    --primary-color: #8B4513;
    --secondary-color: #A0522D;
    --accent-color: #CD853F;
    --text-color: #2C1810;
    --text-light: #5D4037;
    --bg-color: #FAF7F3;
    --white: #ffffff;
    --border-color: #DCC5B2;
    --shadow: 0 2px 10px rgba(44, 24, 16, 0.15);
    --shadow-hover: 0 4px 20px rgba(44, 24, 16, 0.25);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Source Sans Pro', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-weight: 400;
}

/* リンクスタイル */
a {
    color: var(--primary-color);
    text-decoration: underline;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 0 10px;
}

/* 外部リンクアイコン */
.external-link-icon {
    margin-left: 8px;
    width: 16px;
    height: 16px;
    opacity: 0.7;
    vertical-align: middle;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 5px 0;
    text-align: center;
}

.header-title {
    font-size: 3rem;
    font-weight: 300;
    margin-bottom: 10px;
    letter-spacing: 2px;
}

.header-subtitle {
    font-size: 1.2rem;
    font-weight: 300;
    opacity: 0.9;
}

/* メイン */
.main {
    padding: 30px 0;
}

/* 説明セクション */
.intro-section {
    text-align: center;
    margin-bottom: 30px;
    padding: 25px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.intro-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-color);
    max-width: 800px;
    margin: 0 auto;
}

/* フィルター */
.filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

/* タイルグリッド */
.tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
    max-width: 100%;
    margin: 0 auto;
}

.tile-item {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    opacity: 1;
}

.tile-item.clickable {
    cursor: pointer;
}

.tile-item.clickable:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.tile-item.non-clickable {
    cursor: default;
    pointer-events: none;
}

.tile-item.hidden {
    opacity: 0;
    pointer-events: none;
    display: none;
}


.tile-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.tile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 0.9rem;
    text-align: center;
    padding: 20px;
}

.profile-image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 0.9rem;
    text-align: center;
    padding: 20px;
    border-radius: 8px;
}

/* 受賞歴のみ画像全体表示 */
.tile-item[data-category="awards"] .tile-image img {
    object-fit: contain;
    background: var(--bg-color);
}

.tile-item:hover .tile-image img {
    transform: scale(1.05);
}

/* 受賞歴はホバー時のズームを無効化 */
.tile-item[data-category="awards"]:hover .tile-image img {
    transform: none;
}

/* 画像表示モード */
.tile-item[data-image-mode="contain"] .tile-image img {
    object-fit: contain;
    background: var(--bg-color);
}

.tile-item[data-image-mode="cover"] .tile-image img {
    object-fit: cover;
}

.tile-content {
    padding: 20px;
}

.tile-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-color);
    line-height: 1.3;
}

.tile-year {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 12px;
}

.tile-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* プロフィール用タイル */
.tile-item.profile-tile {
    background: var(--white);
    color: var(--text-color);
    cursor: default;
    pointer-events: none;
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 30px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.tile-item.profile-tile .profile-image {
    flex-shrink: 0;
    width: 200px;
    height: 250px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.tile-item.profile-tile .profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.tile-item.profile-tile .tile-content {
    flex: 1;
    padding: 0;
}

.tile-item.profile-tile .tile-title {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 8px;
}

.tile-item.profile-tile .tile-year {
    color: var(--text-light);
    margin-bottom: 20px;
    font-weight: 600;
}

.profile-content p {
    margin-bottom: 12px;
    line-height: 1.6;
    color: var(--text-color);
}

.profile-qualifications {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.qualification-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.qualification-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.qualification-list li {
    padding: 6px 0;
    color: var(--text-color);
    position: relative;
    padding-left: 20px;
}

.qualification-list li::before {
    content: "•";
    color: var(--accent-color);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .tile-item.profile-tile {
        flex-direction: column;
        text-align: center;
        gap: 20px;
        padding: 20px;
    }
    
    .tile-item.profile-tile .profile-image {
        width: 200px;
        height: 240px;
        margin: 0 auto;
    }
    
    .tile-item.profile-tile .tile-content {
        padding: 0;
    }
}

.filter-btn {
    padding: 12px 24px;
    border: 2px solid var(--border-color);
    background: var(--white);
    color: var(--text-color);
    border-radius: 30px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-color);
    color: var(--white);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* タイムライン */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 31px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent-color), var(--primary-color));
}

.timeline-item {
    position: relative;
    margin-bottom: 60px;
    opacity: 1;
    transition: var(--transition);
}

.timeline-item.hidden {
    opacity: 0;
    pointer-events: none;
    margin-bottom: 0;
    overflow: hidden;
    max-height: 0;
}

.timeline-item {
    padding-left: 70px;
    text-align: left;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 24px;
    top: 20px;
    width: 12px;
    height: 12px;
    background: var(--accent-color);
    border: 3px solid var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow);
    z-index: 2;
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 10px;
}

.timeline-content {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.timeline-content.simple {
    padding: 20px 30px;
    display: block;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.timeline-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.timeline-description {
    color: var(--text-light);
    margin-bottom: 15px;
    line-height: 1.5;
}

.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* コンテンツエリア */
.timeline-text {
    flex: 1;
}

/* 画像スタイル */
.timeline-image {
    flex-shrink: 0;
    width: 200px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.timeline-image img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    transition: var(--transition);
}

.timeline-content:hover .timeline-image img {
    transform: scale(1.02);
}

.tag {
    background: var(--accent-color);
    color: var(--white);
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* モーダル */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--white);
    border-radius: 12px;
    max-width: 900px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 30px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal-close:hover {
    background: var(--border-color);
    color: var(--text-color);
}

.modal-body {
    padding: 30px;
}

.modal-content-wrapper {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.modal-image-section {
    flex-shrink: 0;
    width: 350px;
}

.modal-image-container {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 15px;
}

.modal-image-container img {
    width: 100%;
    height: auto;
    display: block;
}

.modal-image-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.image-nav-btn {
    background: var(--accent-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.image-nav-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.image-nav-btn:disabled {
    background: var(--border-color);
    cursor: not-allowed;
    transform: none;
}

.image-counter {
    font-size: 0.9rem;
    color: var(--text-light);
    font-weight: 500;
    min-width: 60px;
    text-align: center;
}

.modal-text-section {
    flex: 1;
}

.modal-date {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 500;
    margin-bottom: 15px;
}

.modal-description {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 20px;
    color: var(--text-color);
}

.modal-details {
    margin-bottom: 20px;
    line-height: 1.6;
    color: var(--text-color);
}

.modal-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .header-title {
        font-size: 2rem;
    }
    
    .header-subtitle {
        font-size: 1rem;
    }
    
    .main {
        padding: 20px 0;
    }
    
    .filters {
        margin-bottom: 30px;
    }
    
    .filter-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .tile-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 15px;
    }
    
    .tile-image {
        height: 150px;
    }
    
    .tile-content {
        padding: 15px;
    }
    
    .tile-title {
        font-size: 1rem;
    }
    
    
    .modal {
        width: 95%;
        margin: 20px;
    }
    
    .modal-header,
    .modal-body {
        padding: 20px;
    }
    
    .modal-title {
        font-size: 1.3rem;
    }
    
    .modal-content-wrapper {
        flex-direction: column;
        gap: 20px;
    }
    
    .modal-image-section {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .header {
        padding: 30px 0;
    }
    
    .header-title {
        font-size: 1.8rem;
    }
    
    .filters {
        gap: 10px;
    }
    
    .filter-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }
    
    .tile-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .tile-content {
        padding: 12px;
    }
    
    .tile-title {
        font-size: 0.9rem;
    }
}

/* 読み込み中表示 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(250, 247, 243, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(2px);
}

.loading-content {
    text-align: center;
    padding: 40px;
}

.loading-text {
    font-size: 1.1rem;
    color: var(--text-color);
    font-weight: 500;
    margin: 0;
}

.loading-overlay.hidden {
    display: none;
}