/* ===== リセット & ベース ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary: #4A90D9;
    --primary-dark: #357ABD;
    --success: #5CB85C;
    --danger: #D9534F;
    --warning: #F0AD4E;
    --bg: #F5F7FA;
    --card-bg: #FFFFFF;
    --text: #333333;
    --text-light: #777777;
    --border: #E0E0E0;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --radius: 8px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===== ヘッダー ===== */
.app-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 10px 16px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.header-row {
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 800px;
    margin: 0 auto;
}

.app-header h1 {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    white-space: nowrap;
    flex-shrink: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.search-box {
    padding: 5px 10px;
    border: none;
    border-radius: 4px;
    font-size: 0.85rem;
    background: rgba(255,255,255,0.2);
    color: white;
    width: 160px;
    transition: all 0.2s;
}

.search-box::placeholder {
    color: rgba(255,255,255,0.6);
}

.search-box:focus {
    outline: none;
    background: rgba(255,255,255,0.3);
    width: 200px;
}

.header-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: rgba(255,255,255,0.25);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    padding: 0;
    flex-shrink: 0;
}

.header-btn:hover {
    background: rgba(255,255,255,0.4);
}

.header-btn:active {
    transform: scale(0.93);
}

.header-btn svg {
    width: 16px;
    height: 16px;
    stroke: white;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ===== メインコンテナ ===== */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 16px;
}

/* ===== ボタン共通 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.96);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 0.8rem;
}

.btn-icon {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 50%;
    font-size: 1rem;
}

/* ===== タスク追加エリア ===== */
.add-task-area {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.add-task-area input {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.add-task-area input:focus {
    outline: none;
    border-color: var(--primary);
}

/* ===== 大タスクグループ ===== */
.task-group {
    background: var(--card-bg);
    border-radius: var(--radius);
    margin-bottom: 12px;
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    transition: border-color 0.2s, opacity 0.2s;
}

.task-group.dragging {
    opacity: 0.4;
    border-color: var(--primary);
}

.task-group.drag-over-task {
    border-color: var(--primary);
    border-style: dashed;
}

.task-group.all-completed {
    opacity: 0.55;
    background: #F5F5F5;
}

.task-group.all-completed .task-group-header {
    border-bottom-color: #E8E8E8;
}

.task-group.all-completed .task-group-name {
    color: var(--text-light);
    text-decoration: line-through;
}

.task-group-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 14px;
    cursor: grab;
    user-select: none;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.task-group-header:active {
    cursor: grabbing;
}

.collapse-btn {
    background: none;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    color: var(--text-light);
    transition: transform 0.2s;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.collapse-btn.collapsed {
    transform: rotate(-90deg);
}

.task-group-name {
    flex: 1;
    font-weight: 600;
    font-size: 1rem;
    min-width: 100px;
    border: none;
    background: transparent;
    color: var(--text);
    padding: 4px 6px;
    border-radius: 4px;
}

.task-group-name:focus {
    outline: none;
    background: #F0F4FF;
}

.task-progress {
    font-size: 0.8rem;
    color: var(--text-light);
    white-space: nowrap;
    flex-shrink: 0;
}

.task-group-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
}

/* ===== ピン留め ===== */
.pin-btn {
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    opacity: 0.3;
    transition: all 0.2s;
    flex-shrink: 0;
}

.pin-btn:hover {
    opacity: 0.7;
}

.pin-btn.pinned {
    opacity: 1;
    color: #E6A817;
}

.task-group.is-pinned {
    border-left: 3px solid #E6A817;
}

/* ===== 小タスクリスト ===== */
.subtask-list {
    padding: 8px 14px 14px;
    min-height: 40px;
}

.subtask-list.collapsed {
    display: none;
}

/* ===== 小タスクアイテム ===== */
.subtask-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    margin-bottom: 6px;
    background: #FAFBFC;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: grab;
    user-select: none;
    transition: border-color 0.2s, opacity 0.2s, background 0.2s;
}

.subtask-item:active {
    cursor: grabbing;
}

.subtask-item.dragging {
    opacity: 0.4;
    background: #E8F0FE;
}

.subtask-item.drag-over-subtask {
    border-color: var(--success);
    border-width: 2px;
    border-style: dashed;
}

.subtask-item.due-today {
    background: #FFF0F0;
    border-color: #F0B0B0;
}

.subtask-item.overdue {
    background: #FFE5E5;
    border-color: #E89090;
}

.subtask-item.completed-item {
    opacity: 0.6;
    background: #F0F0F0;
}

.subtask-item.completed-item .subtask-text {
    text-decoration: line-through;
    color: var(--text-light);
}

.subtask-check {
    width: 20px;
    height: 20px;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: var(--success);
}

.subtask-text {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.9rem;
    color: var(--text);
    padding: 4px 6px;
    min-width: 60px;
    border-radius: 4px;
    resize: none;
    font-family: inherit;
    line-height: 1.5;
    min-height: 28px;
    overflow: hidden;
    word-break: break-word;
}

.subtask-text:focus {
    outline: none;
    background: #FFF;
    box-shadow: inset 0 0 0 1px var(--primary);
}

.subtask-deadline {
    width: 130px;
    padding: 3px 6px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.8rem;
    flex-shrink: 0;
}

.subtask-deadline:focus {
    outline: none;
    border-color: var(--primary);
}

.time-period-btn {
    padding: 3px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    background: #F5F5F5;
    color: var(--text-light);
    min-width: 36px;
    text-align: center;
    flex-shrink: 0;
    transition: all 0.2s;
}

.time-period-btn.am {
    background: #FFF3CD;
    color: #856404;
    border-color: #F0AD4E;
}

.time-period-btn.pm {
    background: #D4EDDA;
    color: #155724;
    border-color: #5CB85C;
}

.subtask-delete {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    flex-shrink: 0;
    opacity: 0.35;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.subtask-delete svg {
    width: 15px;
    height: 15px;
    stroke: var(--danger);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.subtask-delete:hover {
    opacity: 1;
    background: #FEE;
}

.add-subtask-btn {
    display: block;
    width: 100%;
    padding: 8px;
    margin-top: 4px;
    border: 2px dashed var(--border);
    border-radius: 6px;
    background: transparent;
    color: var(--text-light);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.add-subtask-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: #F0F4FF;
}

/* ===== タイムトラッカー ===== */

/* ===== 削除トースト ===== */
.undo-toast {
    position: fixed;
    bottom: -80px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 12px 20px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    z-index: 10000;
    transition: bottom 0.3s ease;
    font-size: 0.88rem;
    max-width: 90vw;
}

.undo-toast.show {
    bottom: 24px;
}

.undo-toast .undo-btn {
    background: #5B9CFF;
    color: white;
    border: none;
    padding: 6px 14px;
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
    font-size: 0.85rem;
    white-space: nowrap;
    transition: background 0.2s;
}

.undo-toast .undo-btn:hover {
    background: #3D7FE6;
}

.undo-toast .toast-timer {
    width: 100%;
    height: 3px;
    background: rgba(255,255,255,0.2);
    border-radius: 2px;
    position: absolute;
    bottom: 0;
    left: 0;
    overflow: hidden;
}

.undo-toast .toast-timer-bar {
    height: 100%;
    background: #5B9CFF;
    border-radius: 2px;
    transition: width linear;
}

/* ===== ゴミ箱モーダル ===== */
.trash-modal .modal-box {
    max-width: 560px;
}

.trash-list {
    max-height: 50vh;
    overflow-y: auto;
    margin: 12px 0;
}

.trash-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    background: #FAFBFC;
}

.trash-item-info {
    flex: 1;
    min-width: 0;
}

.trash-item-name {
    font-weight: 600;
    font-size: 0.92rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.trash-item-meta {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 2px;
}

.trash-item-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.trash-empty {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.trash-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    gap: 8px;
}

/* ===== タイムトラッカー本体 ===== */
.time-tracker {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: #FAFBFC;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

.time-tracker-btns {
    display: flex;
    gap: 5px;
}

.time-tracker-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 4px 10px;
    border: none;
    border-radius: 16px;
    font-size: 0.72rem;
    font-weight: 600;
    cursor: pointer;
    background: rgba(0,0,0,0.45);
    color: white;
    transition: all 0.2s;
    white-space: nowrap;
    line-height: 1;
}

.time-tracker-btn svg {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}

.time-tracker-btn:hover {
    background: rgba(0,0,0,0.6);
}

.time-tracker-btn.active-plan {
    background: #2563EB;
    color: white;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
    animation: tt-pulse-plan 2s ease-in-out infinite;
}

.time-tracker-btn.active-exec {
    background: #16A34A;
    color: white;
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.3);
    animation: tt-pulse-exec 2s ease-in-out infinite;
}

.time-tracker-btn.stop-btn {
    background: rgba(0,0,0,0.35);
    color: rgba(255,255,255,0.85);
}

.time-tracker-btn.stop-btn:hover {
    background: rgba(0,0,0,0.55);
}

@keyframes tt-pulse-plan {
    0%, 100% { box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3); }
    50% { box-shadow: 0 0 0 6px rgba(37, 99, 235, 0.08); }
}

@keyframes tt-pulse-exec {
    0%, 100% { box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.3); }
    50% { box-shadow: 0 0 0 6px rgba(22, 163, 74, 0.08); }
}

.time-tracker-elapsed {
    font-size: 0.82rem;
    font-family: 'Courier New', monospace;
    font-weight: 700;
    color: var(--text);
    min-width: 55px;
}

.time-tracker-elapsed.timing-plan {
    color: #1A56DB;
}

.time-tracker-elapsed.timing-exec {
    color: #0F5132;
}

.time-tracker-total {
    font-size: 0.72rem;
    color: var(--text-light);
    display: flex;
    gap: 8px;
    margin-left: auto;
}

.time-tracker-total span {
    white-space: nowrap;
}

.time-tracker-total .plan-total {
    color: #1A56DB;
}

.time-tracker-total .exec-total {
    color: #0F5132;
}

/* アクティブなタイムトラッカーのパルスアニメーション */
@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.time-tracker .pulse-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse-dot 1.5s ease-in-out infinite;
}

.pulse-indicator.plan-pulse {
    background: #1A56DB;
}

.pulse-indicator.exec-pulse {
    background: #0F5132;
}

/* ===== 引継書 ===== */
/* ===== メモ付箋 ===== */
.memo-section {
    padding: 8px 14px 0;
}

.memo-section.collapsed {
    display: none;
}

.memo-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 10px;
    margin-bottom: 6px;
    background: #FFF9E0;
    border: 1px solid #F0E6A0;
    border-left: 4px solid #F0C040;
    border-radius: 4px;
    transition: opacity 0.2s, background 0.2s;
}

.memo-item.dismissed {
    opacity: 0.4;
    background: #F5F5F0;
    border-left-color: #CCC;
}

.memo-item .memo-check {
    width: 18px;
    height: 18px;
    cursor: pointer;
    flex-shrink: 0;
    margin-top: 2px;
    accent-color: #B8A030;
}

.memo-item .memo-text {
    width: 100%;
    border: none;
    background: transparent;
    font-size: 0.87rem;
    color: var(--text);
    padding: 2px 4px;
    border-radius: 3px;
    resize: none;
    font-family: inherit;
    line-height: 1.5;
    min-height: 60px;
    overflow: hidden;
    box-sizing: border-box;
}

.memo-item .memo-text:focus {
    outline: none;
    background: #FFFEF5;
    box-shadow: inset 0 0 0 1px #E0D470;
}

.memo-item.dismissed .memo-text {
    text-decoration: line-through;
    color: var(--text-light);
}

.memo-delete {
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    flex-shrink: 0;
    opacity: 0.3;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 1px;
}

.memo-delete svg {
    width: 14px;
    height: 14px;
    stroke: var(--danger);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.memo-delete:hover {
    opacity: 1;
}

/* メモ折りたたみ表示 */
.memo-display {
    flex: 1;
    min-width: 0;
}

.memo-display-text {
    font-size: 0.87rem;
    color: var(--text);
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    cursor: text;
}

.memo-display-text.clamped {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.memo-display-text.expanded {
    display: block;
}

.memo-toggle-link {
    font-size: 0.78rem;
    color: var(--primary);
    cursor: pointer;
    margin-top: 2px;
    display: inline-block;
}

.memo-toggle-link:hover {
    text-decoration: underline;
}

.memo-item.dismissed .memo-display-text {
    text-decoration: line-through;
    color: var(--text-light);
}

.add-memo-btn {
    display: block;
    width: 100%;
    padding: 6px;
    margin-bottom: 8px;
    border: 1px dashed #E0D470;
    border-radius: 4px;
    background: transparent;
    color: #B8A030;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.add-memo-btn:hover {
    border-color: #D4B820;
    color: #8B7520;
    background: #FFFDE0;
}

/* ===== 関連ファイル ===== */
.files-section {
    border-top: 1px solid var(--border);
    margin: 0 14px;
    padding: 10px 0;
}

.files-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 4px 0;
    width: 100%;
    text-align: left;
}

.files-toggle:hover {
    color: var(--text);
}

.files-content {
    display: none;
    padding: 8px 0;
}

.files-content.open {
    display: block;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    margin-bottom: 4px;
    background: #F8F9FA;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.83rem;
}

.file-item .file-path {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.83rem;
    color: var(--text);
    font-family: 'Consolas', 'Monaco', monospace;
    padding: 3px 4px;
    border-radius: 3px;
    min-width: 0;
}

.file-item .file-path:focus {
    outline: none;
    background: #FFF;
    box-shadow: inset 0 0 0 1px var(--primary);
}

.file-item .file-copy-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.75rem;
    cursor: pointer;
    color: var(--text-light);
    white-space: nowrap;
    transition: all 0.2s;
}

.file-item .file-copy-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.file-item .file-copy-btn.copied {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

.file-item .file-delete-btn {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 1rem;
    padding: 2px 4px;
    opacity: 0.5;
    transition: opacity 0.2s;
}

.file-item .file-delete-btn:hover {
    opacity: 1;
}

.add-file-btn {
    display: block;
    width: 100%;
    padding: 6px;
    margin-top: 4px;
    border: 1px dashed var(--border);
    border-radius: 4px;
    background: transparent;
    color: var(--text-light);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.add-file-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.files-tip {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 6px;
    line-height: 1.5;
}

.handover-section {
    border-top: 1px solid var(--border);
    margin: 0 14px 14px;
    padding-top: 10px;
}

.handover-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 4px 0;
    width: 100%;
    text-align: left;
}

.handover-toggle:hover {
    color: var(--text);
}

.handover-toggle .arrow,
.files-toggle .arrow {
    transition: transform 0.2s;
    display: inline-block;
}

.handover-toggle .arrow.open,
.files-toggle .arrow.open {
    transform: rotate(90deg);
}

.handover-content {
    display: none;
    padding: 10px 0;
}

.handover-content.open {
    display: block;
}

.handover-field {
    margin-bottom: 10px;
}

.handover-field label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 4px;
}

.handover-field textarea {
    width: 100%;
    min-height: 60px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.85rem;
    font-family: inherit;
    resize: vertical;
    line-height: 1.5;
}

.handover-field textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.handover-tips {
    background: #FFF9E6;
    border: 1px solid #F0E6B8;
    border-radius: 4px;
    padding: 8px 10px;
    font-size: 0.78rem;
    color: #7A6C20;
    margin-top: 8px;
    line-height: 1.6;
}

/* ===== タスクの書き方ガイド ===== */
.guide-section {
    background: var(--card-bg);
    border-radius: var(--radius);
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.guide-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px 14px;
    background: none;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    text-align: left;
}

.guide-toggle:hover {
    background: #F8F9FA;
}

.guide-content {
    display: none;
    padding: 0 14px 14px;
}

.guide-content.open {
    display: block;
}

.guide-content h3 {
    font-size: 0.85rem;
    color: var(--danger);
    margin: 10px 0 6px;
}

.guide-content ul {
    padding-left: 20px;
    font-size: 0.83rem;
    color: var(--text-light);
}

.guide-content li {
    margin-bottom: 4px;
}

.guide-content .good {
    color: var(--success);
}

.guide-content .bad {
    color: var(--danger);
}

/* ===== ドロップゾーンインジケーター ===== */
.drop-indicator {
    height: 3px;
    background: var(--primary);
    border-radius: 2px;
    margin: 2px 0;
    display: none;
}

.drop-indicator.visible {
    display: block;
}

/* ===== レスポンシブ ===== */
@media (max-width: 600px) {
    .header-row {
        flex-wrap: wrap;
    }

    .app-header h1 {
        font-size: 0.95rem;
    }

    .search-box {
        width: 120px;
        font-size: 0.8rem;
    }

    .search-box:focus {
        width: 140px;
    }

    .container {
        padding: 10px;
    }

    .task-group-header {
        padding: 10px;
    }

    .subtask-item {
        flex-wrap: wrap;
        gap: 6px;
    }

    .subtask-text {
        min-width: 100%;
        order: 1;
    }

    .subtask-check {
        order: 0;
    }

    .subtask-deadline {
        width: auto;
        flex: 1;
        order: 2;
    }

    .time-period-btn {
        order: 3;
    }

    .subtask-delete {
        order: 4;
    }

    .time-tracker {
        padding: 4px 10px;
        gap: 4px;
    }

    .time-tracker-btn {
        padding: 3px 8px;
        font-size: 0.68rem;
        gap: 3px;
    }

    .time-tracker-btn svg {
        width: 10px;
        height: 10px;
    }

    .time-tracker-total {
        font-size: 0.68rem;
        gap: 4px;
    }
}

/* ===== データ管理バー ===== */
.data-bar {
    display: none;
}

.data-bar .btn {
    font-size: 0.8rem;
    padding: 6px 12px;
}

.import-input {
    display: none;
}

/* ===== インポート確認モーダル ===== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    align-items: center;
    justify-content: center;
}

.modal-overlay.open {
    display: flex;
}

.modal-box {
    background: white;
    border-radius: var(--radius);
    padding: 24px;
    max-width: 440px;
    width: 90%;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}

.modal-box h3 {
    margin-bottom: 12px;
    font-size: 1.05rem;
}

.modal-box p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 8px;
    line-height: 1.6;
}

.modal-box .import-preview {
    background: #F5F7FA;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 10px;
    margin: 12px 0;
    font-size: 0.82rem;
    max-height: 150px;
    overflow-y: auto;
}

.modal-box .modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 16px;
}

.modal-box .btn-cancel {
    background: #E0E0E0;
    color: var(--text);
}

/* ===== 日報モーダル ===== */
.report-modal .modal-box {
    max-width: 600px;
}

.report-date-selector {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.report-date-selector input[type="date"] {
    padding: 6px 10px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    flex: 1;
}

.report-date-selector input[type="date"]:focus {
    outline: none;
    border-color: var(--primary);
}

.report-date-selector .btn {
    flex-shrink: 0;
}

.report-output {
    background: #F8F9FA;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    min-height: 120px;
    max-height: 50vh;
    overflow-y: auto;
    white-space: pre-wrap;
    font-size: 0.88rem;
    line-height: 1.7;
    font-family: inherit;
    color: var(--text);
}

.report-output .report-empty {
    color: var(--text-light);
    text-align: center;
    padding: 20px;
}

.report-output .report-task-name {
    font-weight: 700;
    color: var(--primary-dark);
    margin-top: 12px;
}

.report-output .report-task-name:first-child {
    margin-top: 0;
}

.report-output .report-subtask {
    padding-left: 12px;
}

.report-output .report-subtask.done {
    color: var(--text);
}

.report-output .report-subtask.undone {
    color: var(--text-light);
}

.report-output .report-stats {
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    font-size: 0.82rem;
    color: var(--text-light);
}

.report-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 14px;
}

/* ===== 空状態 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-light);
}

.empty-state .emoji {
    font-size: 3rem;
    margin-bottom: 12px;
}

.empty-state p {
    font-size: 0.95rem;
}

/* ===== 完了タスクトグルボタン ===== */
.toggle-completed-btn {
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 8px 16px;
    font-size: 0.9rem;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    text-align: center;
}

.toggle-completed-btn:hover {
    background: var(--bg);
    border-color: var(--primary);
}

.toggle-completed-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ===== タグフィルター ===== */
.tag-filter-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 8px;
    font-weight: 600;
}

.tag-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-btn {
    background: var(--card-bg);
    border: 1.5px solid var(--border);
    border-radius: 16px;
    padding: 4px 12px;
    font-size: 0.85rem;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s;
}

.tag-btn:hover {
    background: var(--bg);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.tag-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    font-weight: 600;
}