@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Noto+Sans+JP:wght@400;500;600;700&family=Noto+Serif+JP:wght@400;500;600&display=swap');

:root {
    --bg-primary: #f5f5f0;
    --text-primary: #1a1a1a;
    --text-secondary: #555555;
    --text-tertiary: #999999;
    --border: #e8e8e8;
    --hover: rgba(26, 26, 26, 0.08);
    --surface: rgba(26, 26, 26, 0.015);
    --surface-hover: rgba(26, 26, 26, 0.03);
    --grid-line: rgba(26, 26, 26, 0.02);
    --whiteboard-bg: #fafaf7;
    --whiteboard-grid: rgba(0, 0, 0, 0.04);
    --shadow-card: rgba(0, 0, 0, 0.04);
    --modal-overlay: rgba(0, 0, 0, 0.4);
    --transition: all 0.3s ease;
    color-scheme: light;
}

:root[data-theme="dark"] {
    --bg-primary: #1a1a1a;
    --text-primary: #f0f0e8;
    --text-secondary: #b0b0a8;
    --text-tertiary: #707068;
    --border: #2e2e2e;
    --hover: rgba(255, 255, 255, 0.08);
    --surface: rgba(255, 255, 255, 0.03);
    --surface-hover: rgba(255, 255, 255, 0.06);
    --grid-line: rgba(255, 255, 255, 0.025);
    --whiteboard-bg: #222220;
    --whiteboard-grid: rgba(255, 255, 255, 0.04);
    --shadow-card: rgba(0, 0, 0, 0.3);
    --modal-overlay: rgba(0, 0, 0, 0.65);
    color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-primary: #1a1a1a;
        --text-primary: #f0f0e8;
        --text-secondary: #b0b0a8;
        --text-tertiary: #707068;
        --border: #2e2e2e;
        --hover: rgba(255, 255, 255, 0.08);
        --surface: rgba(255, 255, 255, 0.03);
        --surface-hover: rgba(255, 255, 255, 0.06);
        --grid-line: rgba(255, 255, 255, 0.025);
        --whiteboard-bg: #222220;
        --whiteboard-grid: rgba(255, 255, 255, 0.04);
        --shadow-card: rgba(0, 0, 0, 0.3);
        --modal-overlay: rgba(0, 0, 0, 0.65);
        color-scheme: dark;
    }
}

/* ============================================
   Personal mode — 和やか palette
   ============================================ */

/* Light × Personal: 桜色＋生成りベージュ */
body.mode-personal {
    --bg-primary: #faf3ee;
    --text-primary: #2a1f1f;
    --text-secondary: #6b5252;
    --text-tertiary: #a99595;
    --border: #e8d2c6;
    --hover: rgba(170, 100, 100, 0.11);
    --surface: rgba(170, 100, 100, 0.055);
    --surface-hover: rgba(170, 100, 100, 0.085);
    --grid-line: rgba(170, 100, 100, 0.04);
    --whiteboard-bg: #fdf6f0;
    --whiteboard-grid: rgba(170, 100, 100, 0.05);
    --shadow-card: rgba(170, 100, 100, 0.14);
    --modal-overlay: rgba(60, 30, 30, 0.4);
    --accent: #a55454;
    --accent-fg: #ffffff;
    --transition: all 0.45s ease;
}

/* Dark × Personal: 深い藍墨＋茜 */
:root[data-theme="dark"] body.mode-personal {
    --bg-primary: #1f1a1d;
    --text-primary: #f2e8dc;
    --text-secondary: #c0a8a0;
    --text-tertiary: #7a6862;
    --border: #44322e;
    --hover: rgba(255, 220, 200, 0.11);
    --surface: rgba(255, 220, 200, 0.06);
    --surface-hover: rgba(255, 220, 200, 0.10);
    --grid-line: rgba(255, 220, 200, 0.035);
    --whiteboard-bg: #28221f;
    --whiteboard-grid: rgba(255, 220, 200, 0.055);
    --shadow-card: rgba(0, 0, 0, 0.40);
    --modal-overlay: rgba(20, 10, 10, 0.7);
    --accent: #e8a8a8;
    --accent-fg: #2a1f1f;
    --transition: all 0.45s ease;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) body.mode-personal {
        --bg-primary: #1f1a1d;
        --text-primary: #f2e8dc;
        --text-secondary: #c0a8a0;
        --text-tertiary: #7a6862;
        --border: #44322e;
        --hover: rgba(255, 220, 200, 0.11);
        --surface: rgba(255, 220, 200, 0.06);
        --surface-hover: rgba(255, 220, 200, 0.10);
        --grid-line: rgba(255, 220, 200, 0.035);
        --whiteboard-bg: #28221f;
        --whiteboard-grid: rgba(255, 220, 200, 0.055);
        --shadow-card: rgba(0, 0, 0, 0.40);
        --modal-overlay: rgba(20, 10, 10, 0.7);
        --accent: #e8a8a8;
        --accent-fg: #2a1f1f;
        --transition: all 0.45s ease;
    }
}

/* work モード時の --accent デフォルト (現状未使用の防衛的定義: personal 専用スタイルが
   work に漏れた場合のフォールバック。将来 work 側でも --accent を使う場合の差し替え点) */
body:not(.mode-personal) {
    --accent: var(--text-primary);
    --accent-fg: var(--bg-primary);
}

/* --- Personal: カード系の角丸 --- */
body.mode-personal .timeline-card,
body.mode-personal .work-item,
body.mode-personal .book-item,
body.mode-personal .badge-item,
body.mode-personal .badge-item.rank-gold,
body.mode-personal .badge-item.rank-silver,
body.mode-personal .badge-item.rank-bronze,
body.mode-personal .running-item,
body.mode-personal .running-best-card,
body.mode-personal .running-best-gold,
body.mode-personal .running-best-silver {
    border-radius: 16px;
}

/* 影は medal グロウを保持したい要素を除外 */
body.mode-personal .timeline-card,
body.mode-personal .work-item,
body.mode-personal .book-item,
body.mode-personal .running-item,
body.mode-personal .running-best-card:not(.running-best-gold):not(.running-best-silver) {
    box-shadow: 0 10px 30px var(--shadow-card);
}

/* カード内の画像を角丸でマスク (overflow は .work-image に閉じる) */
body.mode-personal .works-grid.view-card .work-image {
    border-top-left-radius: 16px;
    border-top-right-radius: 16px;
}
body.mode-personal .works-grid.view-list .work-image {
    border-radius: 10px;
}

/* チップ/タグ/小ボタン: 角丸 10px */
body.mode-personal .genre-chip,
body.mode-personal .work-tag,
body.mode-personal .running-distance-badge,
body.mode-personal .books-sort-select,
body.mode-personal .books-genre-select,
body.mode-personal .work-link,
body.mode-personal .retry-btn,
body.mode-personal .timeline-year span,
body.mode-personal .skeleton-line {
    border-radius: 10px;
}

body.mode-personal .skeleton-card {
    border-radius: 16px;
}

/* モーダル: 角丸 22px */
body.mode-personal .book-modal-card,
body.mode-personal .sticky-modal-card {
    border-radius: 22px;
    box-shadow: 0 24px 70px var(--shadow-card);
}

/* 付箋 */
body.mode-personal .sticky-note {
    border-radius: 10px;
}

/* --- Personal: アクセント色 (桜色) --- */
body.mode-personal .tab-btn.active::after {
    background: var(--accent);
}
body.mode-personal .timeline-node {
    background: var(--accent);
}
body.mode-personal .timeline::before {
    background: linear-gradient(to bottom, var(--accent), transparent);
}
body.mode-personal .mode-toggle-btn[aria-pressed="true"] {
    background: var(--accent);
    color: var(--accent-fg);
}
body.mode-personal .works-view-btn[aria-pressed="true"],
body.mode-personal .books-view-btn[aria-pressed="true"],
body.mode-personal .badges-view-btn[aria-pressed="true"] {
    background: var(--accent);
    color: var(--accent-fg);
}
body.mode-personal .genre-chip.active {
    background: var(--accent);
    color: var(--accent-fg);
    border-color: var(--accent);
}
body.mode-personal .footer-links a:hover {
    color: var(--accent);
}
body.mode-personal .retry-btn:hover {
    background: var(--accent);
    color: var(--accent-fg);
}

/* --- Personal: アクセント色拡大 (hover / focus) --- */
body.mode-personal .tab-btn:hover {
    color: var(--accent);
}
body.mode-personal .work-item-clickable:hover,
body.mode-personal .book-item:hover,
body.mode-personal .running-item:hover {
    border-color: var(--accent);
}
body.mode-personal .badge-item:not(.rank-gold):not(.rank-silver):not(.rank-bronze):hover {
    border-color: var(--accent);
}
body.mode-personal .work-link:hover {
    color: var(--accent);
    border-color: var(--accent);
}
body.mode-personal .genre-chip:hover {
    color: var(--accent);
    border-color: var(--accent);
}
body.mode-personal .theme-toggle:hover,
body.mode-personal .lang-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}
body.mode-personal .theme-toggle:focus-visible,
body.mode-personal .lang-toggle:focus-visible,
body.mode-personal .mode-toggle-btn:focus-visible,
body.mode-personal .works-view-btn:focus-visible,
body.mode-personal .books-view-btn:focus-visible,
body.mode-personal .badges-view-btn:focus-visible,
body.mode-personal .work-item-clickable:focus-visible,
body.mode-personal .book-modal-close:focus-visible,
body.mode-personal .sticky-modal-close:focus-visible {
    outline-color: var(--accent);
}

/* --- Personal: タイポ (h2 をセリフに) --- */
body.mode-personal .tab-pane h2 {
    font-family: 'Noto Serif JP', 'Noto Sans JP', serif;
    font-weight: 500;
    letter-spacing: 0.02em;
}

body.mode-personal .tab-pane h2::before {
    content: '✿';
    color: var(--accent);
    font-weight: 400;
    margin-right: 0.5rem;
    opacity: 0.7;
    font-size: 0.85em;
    vertical-align: 0.05em;
}

body.mode-personal .header h1 {
    font-family: 'Noto Serif JP', 'Noto Sans JP', serif;
    font-weight: 600;
    letter-spacing: 0;
}
body.mode-personal .header .subtitle {
    font-family: 'Noto Serif JP', 'Noto Sans JP', serif;
    font-style: italic;
}
body.mode-personal .timeline-card h3,
body.mode-personal .work-body h3,
body.mode-personal .book-item h3,
body.mode-personal .badge-item h3,
body.mode-personal .book-modal-title,
body.mode-personal .sticky-modal-title {
    font-family: 'Noto Serif JP', 'Noto Sans JP', serif;
    font-weight: 500;
}

/* --- Personal: 全体に薄い暖色グラデを敷く --- */
body.mode-personal::after {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 80% 0%, rgba(232, 168, 168, 0.16), transparent 70%),
        radial-gradient(ellipse 60% 50% at 0% 100%, rgba(232, 200, 168, 0.13), transparent 70%);
    pointer-events: none;
    /* z-index:0 は ::before (grid) と同じ。DOM 順により ::after が上に乗る (意図通り)。
       コンテンツは z-index:1 で常にこれら 2 つの上に来る */
    z-index: 0;
}

:root[data-theme="dark"] body.mode-personal::after {
    background:
        radial-gradient(ellipse 80% 60% at 80% 0%, rgba(232, 168, 168, 0.10), transparent 70%),
        radial-gradient(ellipse 60% 50% at 0% 100%, rgba(232, 200, 168, 0.07), transparent 70%);
}
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) body.mode-personal::after {
        background:
            radial-gradient(ellipse 80% 60% at 80% 0%, rgba(232, 168, 168, 0.10), transparent 70%),
            radial-gradient(ellipse 60% 50% at 0% 100%, rgba(232, 200, 168, 0.07), transparent 70%);
    }
}

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

html {
    font-size: 93.75%; /* 1rem ≒ 15px (16px から -1px)。ユーザーのブラウザ設定は尊重 */
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', 'Inter', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Grid background pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 3rem 1rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.header-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}

.header-text {
    min-width: 0;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
    font-family: inherit;
    line-height: 1;
}

.theme-toggle:hover {
    border-color: var(--text-secondary);
    background: var(--hover);
    color: var(--text-primary);
}

.lang-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    cursor: pointer;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: var(--transition);
    font-family: inherit;
    line-height: 1;
}

.lang-toggle:hover {
    border-color: var(--text-secondary);
    background: var(--hover);
    color: var(--text-primary);
}

.header-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.mode-toggle {
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 2px;
    height: 2.25rem;
    background: var(--surface);
}

.mode-toggle-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    line-height: 1;
}

.mode-toggle-btn:hover {
    color: var(--text-primary);
}

.mode-toggle-btn[aria-pressed="true"] {
    background: var(--text-primary);
    color: var(--bg-primary);
    cursor: default;
}

.mode-toggle-btn:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.theme-toggle:focus-visible,
.lang-toggle:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.header .subtitle {
    max-width: 900px;
    margin: 0.5rem auto 0;
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Container */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1rem;
    position: relative;
    z-index: 1;
}

/* Tab Navigation */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2rem;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex: 0 0 auto;
    text-align: center;
    background: none;
    border: none;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    font-family: inherit;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--text-primary);
    cursor: default;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--text-primary);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        width: 0;
        left: 50%;
    }
    to {
        width: 100%;
        left: 0;
    }
}

/* Tab Content */
.tab-contents {
    position: relative;
    min-height: 400px;
}

.tab-pane {
    display: none;
    animation: fadeInTab 0.4s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeInTab {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-pane h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
}

/* Timeline Section */
.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    transform: translateX(-50%);
    background: linear-gradient(to bottom, var(--text-primary), transparent);
}

.timeline-year {
    position: relative;
    display: flex;
    justify-content: center;
    margin: 1rem 0;
    z-index: 1;
}

.timeline-year span {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    padding: 0.2rem 0.9rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-tertiary);
    letter-spacing: 0.06em;
    position: relative;
    z-index: 1;
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 2.5rem 1fr;
    margin-bottom: 2rem;
    align-items: start;
}

.timeline-node {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    align-self: start;
    margin-top: 0.75rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-primary);
    border: 2px solid var(--bg-primary);
    position: relative;
    z-index: 1;
}

.timeline-card {
    padding: 1.25rem;
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: 0 2px 8px var(--shadow-card);
    grid-row: 1;
}

.timeline-item.right .timeline-card {
    grid-column: 3;
}

.timeline-item.left .timeline-card {
    grid-column: 1;
}

.timeline-period {
    display: block;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-bottom: 0.3rem;
}

.timeline-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
}

.role {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Books Filter & Sort Controls */
.books-controls {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
    align-items: center;
}

.books-genres {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    flex: 1;
}

.genre-chip {
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 0.8rem;
    padding: 0.25rem 0.65rem;
    border-radius: 2px;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    transition: var(--transition);
}

.genre-chip:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.genre-chip.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.books-sort-select {
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    border-radius: 2px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.books-sort-select:hover {
    border-color: var(--text-secondary);
}

.books-genre-select {
    display: none;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    border-radius: 2px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    flex: 1;
    min-width: 0;
    max-width: 100%;
}

.books-genre-select:hover {
    border-color: var(--text-secondary);
}

/* Books Section */
.book-section {
    grid-column: 1 / -1;
    margin-bottom: 2.5rem;
}

.star-heading {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    padding-bottom: 0.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 2px solid;
}

.books-grid {
    gap: 1.5rem;
}

.books-grid.view-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.books-grid.view-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.book-item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    background: var(--surface);
    transition: var(--transition);
}

.book-item:hover {
    border-color: var(--text-secondary);
    background: var(--surface-hover);
    transform: translateY(-2px);
}

.book-info {
    flex: 2;
    min-width: 0;
}

.book-cover {
    flex: 1;
    min-width: 0;
}

.book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.book-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.author {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-bottom: 0.75rem;
}

.book-item .description {
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Books list view */
.books-grid.view-list .book-item {
    flex-direction: row;
    align-items: center;
    gap: 0.85rem;
    padding: 0.75rem 1rem;
}

.books-grid.view-list .book-item:hover {
    transform: none;
}

.books-grid.view-list .book-cover {
    flex: 0 0 56px;
    order: -1;
}

.books-grid.view-list .book-cover img {
    width: 56px;
    height: 80px;
    object-fit: cover;
}

.books-grid.view-list .book-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.books-grid.view-list .book-item h3 {
    font-size: 0.95rem;
    line-height: 1.3;
    margin-bottom: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.books-grid.view-list .author {
    font-size: 0.8rem;
    margin-bottom: 0;
}

.books-grid.view-list .book-item .description {
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--text-tertiary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Book modal */
#book-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--modal-overlay);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

#book-modal-overlay.active {
    display: flex;
}

.book-modal-card {
    position: relative;
    background: var(--bg-primary);
    padding: 2rem;
    max-width: 480px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--border);
    animation: stickyPop 0.18s ease;
}

.book-modal-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: 0.25rem;
    line-height: 1;
    border-radius: 50%;
}

.book-modal-close:hover {
    color: var(--text-primary);
}

.book-modal-close:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.book-modal-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.book-modal-info {
    flex: 2;
    min-width: 0;
}

.book-modal-image {
    flex: 1;
    min-width: 0;
}

.book-modal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.book-modal-star {
    font-size: 0.95rem;
    color: var(--text-tertiary);
    margin-bottom: 0.4rem;
}

.book-modal-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.book-modal-genre {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.book-modal-content {
    font-size: 0.95rem;
    line-height: 1.8;
    color: var(--text-secondary);
    white-space: pre-wrap;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
}

/* Badges Section */
.badges-list {
    gap: 1.5rem;
}

.badges-list.view-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.badges-list.view-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.badge-item {
    padding: 1rem 1.5rem;
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
    background: var(--surface);
}

.badge-item:hover {
    background: var(--surface-hover);
    transform: scale(1.02);
}

.badge-icon {
    font-size: 2.5rem;
    margin-bottom: 0.6rem;
    display: block;
}

.rank-section {
    margin-bottom: 2.5rem;
}

.rank-heading {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding-bottom: 0.5rem;
    margin-bottom: 1.25rem;
    border-bottom: 2px solid;
}

.rank-gold-heading {
    color: #ffd700;
    border-bottom-color: #ffd700;
}

.rank-silver-heading {
    color: #c0c0c0;
    border-bottom-color: #c0c0c0;
}

.rank-bronze-heading {
    color: #cd7f32;
    border-bottom-color: #cd7f32;
}

.badge-item.rank-gold {
    border-color: #ffd700;
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.3);
    background: rgba(255, 215, 0, 0.06);
}

.badge-item.rank-silver {
    border-color: #c0c0c0;
    box-shadow: 0 0 12px rgba(192, 192, 192, 0.3);
    background: rgba(192, 192, 192, 0.06);
}

.badge-item.rank-bronze {
    border-color: #cd7f32;
    box-shadow: 0 0 12px rgba(205, 127, 50, 0.3);
    background: rgba(205, 127, 50, 0.06);
}

.badge-item h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.year {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    margin-bottom: 0.4rem;
}

.badge-item .description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Badges list view */
.badges-list.view-list .badge-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    text-align: left;
    gap: 0.85rem;
    padding: 0.75rem 1rem;
}

.badges-list.view-list .badge-item:hover {
    transform: none;
}

.badges-list.view-list .badge-icon {
    font-size: 1.6rem;
    margin-bottom: 0;
    flex: 0 0 auto;
}

.badges-list.view-list .badge-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.badges-list.view-list .badge-item h3 {
    font-size: 0.95rem;
    margin-bottom: 0;
    line-height: 1.3;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.badges-list.view-list .year {
    font-size: 0.8rem;
    margin-bottom: 0;
}

.badges-list.view-list .badge-item .description {
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--text-tertiary);
    margin: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Memory / Whiteboard Section */
.memories-list {
    display: block;
}

.whiteboard {
    position: relative;
    width: 100%;
    background-color: var(--whiteboard-bg);
    background-image:
        linear-gradient(var(--whiteboard-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--whiteboard-grid) 1px, transparent 1px);
    background-size: 32px 32px;
    border: 1px solid var(--border);
    overflow: hidden;
}

.sticky-note {
    position: absolute;
    width: 170px;
    min-height: 120px;
    padding: 1rem;
    box-shadow: 3px 3px 8px rgba(0,0,0,0.15);
    cursor: pointer;
    border-radius: 2px;
    transition: box-shadow 0.15s ease;
}

.sticky-note:hover {
    box-shadow: 6px 6px 16px rgba(0,0,0,0.22);
    z-index: 999 !important;
}

.sticky-note-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: rgba(0,0,0,0.72);
    line-height: 1.4;
    margin-bottom: 0.6rem;
    word-break: break-all;
}

.sticky-note-date {
    font-size: 0.75rem;
    color: rgba(0,0,0,0.48);
}

/* Sticky note modal */
#sticky-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--modal-overlay);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

#sticky-modal-overlay.active {
    display: flex;
}

.sticky-modal-card {
    position: relative;
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    border-radius: 2px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.25);
    animation: stickyPop 0.18s ease;
}

@keyframes stickyPop {
    from { transform: scale(0.85); opacity: 0; }
    to   { transform: scale(1);    opacity: 1; }
}

.sticky-modal-close {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: rgba(0,0,0,0.4);
    line-height: 1;
    padding: 0.25rem;
    border-radius: 50%;
}

.sticky-modal-close:hover {
    color: rgba(0,0,0,0.7);
}

.sticky-modal-close:focus-visible {
    outline: 2px solid rgba(0, 0, 0, 0.8);
    outline-offset: 2px;
}

.sticky-modal-category-label {
    font-size: 0.8rem;
    color: rgba(0,0,0,0.5);
    margin-bottom: 0.4rem;
}

.sticky-modal-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: rgba(0,0,0,0.8);
    margin-bottom: 1rem;
}

.sticky-modal-content {
    font-size: 0.95rem;
    line-height: 1.7;
    color: rgba(0,0,0,0.68);
    white-space: pre-wrap;
}

/* Fade-in animation for scroll */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Loading state */
.loading {
    text-align: center;
    color: var(--text-tertiary);
    padding: 2rem 1rem;
    font-size: 0.95rem;
}

/* Skeleton loader */
@keyframes skeletonPulse {
    0%, 100% { opacity: 0.55; }
    50% { opacity: 1; }
}

.skeleton {
    background: var(--surface);
    border: 1px solid var(--border);
    animation: skeletonPulse 1.4s ease-in-out infinite;
}

.skeleton-card {
    padding: 1.25rem;
    margin-bottom: 1.25rem;
    min-height: 96px;
}

.books-grid .skeleton-card,
.badges-list .skeleton-card,
.works-grid .skeleton-card {
    margin-bottom: 0;
}

.skeleton-line {
    background: var(--hover);
    height: 0.85rem;
    margin-bottom: 0.6rem;
    border-radius: 2px;
}

.skeleton-line:last-child {
    margin-bottom: 0;
}

.skeleton-line.short  { width: 32%; }
.skeleton-line.medium { width: 60%; }
.skeleton-line.long   { width: 92%; }

/* T16: Loading indicator (spinner + label pill) */
.loading-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin: -0.5rem 0 1.25rem;
    padding: 0.4rem 0.85rem;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--surface);
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1;
    vertical-align: middle;
}

.loading-spinner {
    display: inline-block;
    width: 0.9rem;
    height: 0.9rem;
    border: 2px solid var(--hover);
    border-top-color: var(--text-secondary);
    border-radius: 50%;
    animation: loadingSpin 0.8s linear infinite;
    flex-shrink: 0;
}

.loading-text {
    font-weight: 500;
    letter-spacing: 0.02em;
}

@keyframes loadingSpin {
    to { transform: rotate(360deg); }
}

@media (prefers-reduced-motion: reduce) {
    .loading-spinner { animation: none; }
    .skeleton { animation: none; opacity: 0.85; }
}

/* Error state */
.error-state {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--text-secondary);
}

.error-state p {
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.retry-btn {
    background: none;
    border: 1px solid var(--text-secondary);
    color: var(--text-primary);
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.retry-btn:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* Works Controls */
.works-controls {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1.25rem;
}

.badges-controls {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1.25rem;
}

.works-view-toggle, .books-view-toggle, .badges-view-toggle {
    display: inline-flex;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 2px;
    height: 2rem;
    background: var(--surface);
}

.works-view-btn, .books-view-btn, .badges-view-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 0 0.85rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    line-height: 1;
}

.works-view-btn:hover, .books-view-btn:hover, .badges-view-btn:hover {
    color: var(--text-primary);
}

.works-view-btn[aria-pressed="true"], .books-view-btn[aria-pressed="true"], .badges-view-btn[aria-pressed="true"] {
    background: var(--text-primary);
    color: var(--bg-primary);
    cursor: default;
}

.works-view-btn:focus-visible, .books-view-btn:focus-visible, .badges-view-btn:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

/* Works Section */
.works-grid {
    gap: 1.5rem;
}

.works-grid.view-card {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* List view */
.works-grid.view-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.works-grid.view-list .work-item {
    flex-direction: row;
    align-items: stretch;
}

.works-grid.view-list .work-image {
    width: 140px;
    flex-shrink: 0;
    align-self: center;
    margin: 0.5rem 0 0.5rem 0.5rem;
}

.works-grid.view-list .work-body {
    padding: 0.85rem 1rem;
    gap: 0.4rem;
}

.works-grid.view-list .work-body h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.works-grid.view-list .work-description {
    font-size: 0.85rem;
    margin-bottom: 0.4rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.works-grid.view-list .work-tags {
    margin-bottom: 0.4rem;
    gap: 0.3rem;
}

.works-grid.view-list .work-tag {
    font-size: 0.7rem;
    padding: 0.1rem 0.45rem;
}

.works-grid.view-list .work-links {
    margin-top: auto;
}

.works-grid.view-list .work-item-clickable:hover {
    transform: none;
}

.work-item {
    border: 1px solid var(--border);
    background: var(--surface);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.work-item-clickable:hover {
    border-color: var(--text-secondary);
    background: var(--surface-hover);
    transform: translateY(-2px);
}

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

.work-item-clickable:focus-visible {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.work-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--hover);
}

.work-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.work-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--text-tertiary);
}

.work-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.work-body h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.work-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.75rem;
    flex: 1;
}

.work-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1rem;
}

.work-tag {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.2rem 0.55rem;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    background: var(--surface);
    border-radius: 2px;
}

.work-links {
    display: flex;
    gap: 0.75rem;
}

.work-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border);
    padding: 0.35rem 0.8rem;
    transition: var(--transition);
}

.work-link:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
    background: var(--hover);
}

/* Running Section */
.running-summary {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.running-best-card {
    flex: 1;
    min-width: 160px;
    padding: 1.25rem;
    border: 1px solid var(--border);
    background: var(--surface);
    text-align: center;
}

.running-best-gold {
    border-color: #ffd700;
    background: rgba(255, 215, 0, 0.06);
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.3);
}

.running-best-gold .running-best-time {
    color: #b8860b;
}

.running-best-silver {
    border-color: #c0c0c0;
    background: rgba(192, 192, 192, 0.06);
    box-shadow: 0 0 12px rgba(192, 192, 192, 0.3);
}

.running-best-silver .running-best-time {
    color: #808080;
}

:root[data-theme="dark"] .running-best-gold .running-best-time  { color: #ffd700; }
:root[data-theme="dark"] .running-best-silver .running-best-time { color: #c0c0c0; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .running-best-gold .running-best-time  { color: #ffd700; }
    :root:not([data-theme="light"]) .running-best-silver .running-best-time { color: #c0c0c0; }
}

.running-best-label {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.4rem;
}

.running-best-time {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.running-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.running-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
    background: var(--surface);
    transition: var(--transition);
}

.running-item:hover {
    background: var(--surface-hover);
    border-color: var(--text-secondary);
}

.running-distance-badge {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.6rem;
    border-radius: 2px;
    flex-shrink: 0;
    letter-spacing: 0.04em;
}

.distance-full    { background: rgba(229,62,62,0.12);  color: #C53030; }
.distance-half    { background: rgba(49,130,206,0.12); color: #2B6CB0; }
.distance-10km    { background: rgba(72,187,120,0.12); color: #276749; }
.distance-5km     { background: rgba(113,128,150,0.12);color: #4A5568; }
.distance-other   { background: var(--hover);           color: var(--text-secondary); }

:root[data-theme="dark"] .distance-full  { color: #FC8181; }
:root[data-theme="dark"] .distance-half  { color: #63B3ED; }
:root[data-theme="dark"] .distance-10km  { color: #68D391; }
:root[data-theme="dark"] .distance-5km   { color: #A0AEC0; }

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .distance-full  { color: #FC8181; }
    :root:not([data-theme="light"]) .distance-half  { color: #63B3ED; }
    :root:not([data-theme="light"]) .distance-10km  { color: #68D391; }
    :root:not([data-theme="light"]) .distance-5km   { color: #A0AEC0; }
}

.running-item-body {
    flex: 1;
    min-width: 0;
}

.running-item-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.running-item-meta {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.running-item-time {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    flex-shrink: 0;
}

/* Footer */
.footer {
    margin-top: 4rem;
    padding: 2rem 1rem;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }

    .header .subtitle {
        font-size: 1rem;
    }

    .tabs {
        margin-bottom: 1.5rem;
        /* overflow-x はベースの auto を維持 (タブ増加時のフォールバック)。
           均等分割は子の flex:1 1 0 で実現する */
    }

    .tab-btn {
        flex: 1 1 0;
        min-width: 0;
        font-size: 0.85rem;
        padding: 0.75rem 0.35rem;
        line-height: 1.25;
        white-space: normal;
        overflow-wrap: anywhere;
    }

    .running-summary {
        gap: 0.75rem;
    }

    .tab-pane h2 {
        font-size: 1.5rem;
        margin-bottom: 1.5rem;
    }

    .books-grid.view-card,
    .badges-list.view-card {
        grid-template-columns: 1fr;
    }

    #books-controls .books-genres {
        display: none;
    }

    #books-controls .books-genre-select {
        display: inline-block;
    }

    .timeline::before {
        left: 1rem;
        transform: none;
    }

    .timeline-year {
        justify-content: flex-start;
        padding-left: 2.5rem;
    }

    .timeline-item {
        grid-template-columns: 2.5rem 1fr;
    }

    .timeline-node {
        grid-column: 1;
    }

    .timeline-item.right .timeline-card,
    .timeline-item.left .timeline-card {
        grid-column: 2;
        grid-row: 1;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 2rem 1rem;
        margin-bottom: 1rem;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .header .subtitle {
        font-size: 0.85rem;
    }

    .tab-btn {
        padding: 0.6rem 0.2rem;
        font-size: 0.75rem;
    }

    .running-item {
        flex-wrap: wrap;
        gap: 0.6rem;
    }

    .running-item-time {
        font-size: 1.1rem;
    }

    .container {
        padding: 0 0.75rem;
    }

    .book-item,
    .badge-item {
        padding: 0.75rem 1rem;
    }

    .badges-list.view-list .badge-item {
        padding: 0.6rem 0.85rem;
        gap: 0.7rem;
    }

    .mode-toggle-btn {
        padding: 0 0.55rem;
        font-size: 0.7rem;
    }
    .header-actions {
        gap: 0.35rem;
    }
    .works-grid.view-list .work-image {
        width: 96px;
        margin-left: 0.4rem;
    }
    .works-grid.view-list .work-body {
        padding: 0.7rem 0.85rem;
    }
    .works-controls {
        justify-content: flex-start;
    }

    .books-grid.view-list .book-item {
        padding: 0.6rem 0.85rem;
        gap: 0.7rem;
    }

    .books-grid.view-list .book-cover {
        flex: 0 0 44px;
    }

    .books-grid.view-list .book-cover img {
        width: 44px;
        height: 60px;
    }
}