/* BookTracker CSS Styles */
/* レスポンシブ対応の読書記録管理アプリケーション */

/* ===== リセット・基本設定 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== ヘッダー ===== */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2c3e50;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 2rem;
}

.nav {
    display: flex;
    gap: 0.5rem;
}

.nav-btn {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    font-weight: 500;
    color: #666;
}

.nav-btn:hover {
    background: #f8f9fa;
    color: #2c3e50;
}

.nav-btn.active {
    background: #3498db;
    color: white;
}

/* ===== メインコンテンツ ===== */
.main {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

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

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 2rem;
    font-weight: 600;
    color: #2c3e50;
}

/* ===== ボタン ===== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #95a5a6;
    color: white;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-danger {
    background: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

/* ===== 統計カード ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
}

.stat-icon {
    font-size: 3rem;
    opacity: 0.8;
}

.stat-content {
    flex: 1;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    line-height: 1;
}

.stat-label {
    font-size: 0.95rem;
    color: #666;
    margin-top: 0.25rem;
}

/* ===== 読書目標 ===== */
.goal-section {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.goal-section h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.goal-card {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.goal-progress {
    flex: 1;
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: #ecf0f1;
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3498db, #2ecc71);
    border-radius: 6px;
    transition: width 0.6s ease;
}

.goal-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: #2c3e50;
}

/* ===== 最近の活動 ===== */
.recent-section {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.recent-section h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.record-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.record-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    transition: background 0.3s ease;
}

.record-item:hover {
    background: #e9ecef;
}

.record-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    text-align: center;
    min-width: 80px;
}

.status-reading { background: #3498db; color: white; }
.status-completed { background: #2ecc71; color: white; }
.status-want_to_read { background: #f39c12; color: white; }
.status-paused { background: #95a5a6; color: white; }

.record-content {
    flex: 1;
}

.record-title {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.25rem;
}

.record-meta {
    color: #666;
    font-size: 0.9rem;
}

/* ===== 検索・フィルター ===== */
.search-section {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.search-bar {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.search-input, .filter-select {
    flex: 1;
    padding: 0.75rem;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.search-input:focus, .filter-select:focus {
    outline: none;
    border-color: #3498db;
}

/* ===== 本一覧 ===== */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.book-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease;
}

.book-card:hover {
    transform: translateY(-5px);
}

.book-header {
    padding: 1.5rem;
    border-bottom: 1px solid #ecf0f1;
}

.book-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.book-author {
    color: #666;
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.book-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.book-actions {
    padding: 1rem 1.5rem;
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* ===== フィルタータブ ===== */
.filter-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: white;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.filter-tab {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    font-weight: 500;
    color: #666;
}

.filter-tab:hover {
    background: #f8f9fa;
    color: #2c3e50;
}

.filter-tab.active {
    background: #3498db;
    color: white;
}

/* ===== 読書記録一覧 ===== */
.records-list {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    overflow: hidden;
}

.record-row {
    padding: 1.5rem;
    border-bottom: 1px solid #ecf0f1;
    transition: background 0.3s ease;
}

.record-row:last-child {
    border-bottom: none;
}

.record-row:hover {
    background: #f8f9fa;
}

.record-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.record-body {
    margin-left: 6rem;
    color: #666;
    font-size: 0.95rem;
}

.record-rating {
    color: #f39c12;
    font-size: 1.1rem;
}

/* ===== 統計グラフ ===== */
.stats-charts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.chart-container {
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.chart-container h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
    text-align: center;
}

/* ===== ページネーション ===== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.page-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    background: white;
    color: #666;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.page-btn:hover {
    background: #f8f9fa;
    border-color: #3498db;
}

.page-btn.active {
    background: #3498db;
    color: white;
    border-color: #3498db;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== モーダル ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    color: #2c3e50;
    font-size: 1.3rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: #666;
    line-height: 1;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* ===== フォーム ===== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: #3498db;
}

textarea.form-input {
    resize: vertical;
    min-height: 80px;
}

/* ===== ローディング・トースト ===== */
.loading {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255,255,255,0.9);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

.loading.active {
    display: flex;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #ecf0f1;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    margin-top: 1rem;
    color: #2c3e50;
    font-size: 1.1rem;
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #2c3e50;
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 10000;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background: #2ecc71;
}

.toast.error {
    background: #e74c3c;
}

/* ===== レスポンシブデザイン ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .nav-btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .search-bar {
        flex-direction: column;
    }
    
    .books-grid {
        grid-template-columns: 1fr;
    }
    
    .goal-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .record-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .record-body {
        margin-left: 0;
        margin-top: 0.5rem;
    }
    
    .stats-charts {
        grid-template-columns: 1fr;
    }
    
    .chart-container {
        min-height: 300px;
    }
    
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .modal-footer {
        flex-direction: column-reverse;
    }
    
    .filter-tabs {
        flex-wrap: wrap;
    }
}

/* ===== オフライン通知 ===== */
.offline-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    background: #3498db;
    color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideInRight 0.3s ease-out;
}

.notification-content {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    gap: 10px;
}

.notification-content i {
    font-size: 18px;
}

.notification-content .close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    margin-left: 10px;
    padding: 0;
    line-height: 1;
}

.notification-content .close-btn:hover {
    opacity: 0.8;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}