/* ==========================================
   グローバル設定
   ========================================== */
:root {
    /* 春らしい女子向けパステルカラーパレット 🌸🌷🌼 */
    --primary-color: #FFB6D9;        /* さくらピンク */
    --primary-dark: #FF9AC8;         /* 濃いさくらピンク */
    --secondary-color: #B4E7CE;      /* ミントグリーン */
    --danger-color: #FFCCD5;         /* パステルローズ */
    --warning-color: #FFE5CC;        /* パステルピーチ */
    --info-color: #C9E4FF;           /* ベビーブルー */
    --accent-lavender: #E6CCFF;      /* ラベンダー */
    --accent-yellow: #FFF9CC;        /* レモンイエロー */
    
    --text-primary: #666666;         /* チャコールグレー */
    --text-secondary: #999999;       /* ウォームグレー */
    --text-light: #BBBBBB;           /* ライトグレー */
    
    --bg-primary: #FFFBFC;           /* ほんのりピンクホワイト */
    --bg-secondary: #FFF5F7;         /* パステルクリーム */
    --bg-tertiary: #FFE4ED;          /* ミスティローズ */
    
    --border-color: #FFD6E7;         /* ソフトピンクボーダー */
    --border-radius: 18px;           /* より丸く */
    --border-radius-small: 12px;
    
    --shadow-sm: 0 2px 6px 0 rgba(255, 182, 217, 0.12);
    --shadow: 0 8px 16px -4px rgba(255, 182, 217, 0.2), 0 4px 8px -2px rgba(255, 182, 217, 0.12);
    --shadow-lg: 0 16px 32px -8px rgba(255, 182, 217, 0.25), 0 8px 16px -4px rgba(255, 182, 217, 0.15);
}

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

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background: linear-gradient(180deg, #FFF5F7 0%, #FFE4ED 50%, #FFF5F7 100%);
    background-attachment: fixed;
    line-height: 1.6;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 182, 217, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(180, 231, 206, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(230, 204, 255, 0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

body > * {
    position: relative;
    z-index: 1;
}

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

/* ==========================================
   ヘッダー
   ========================================== */
.header {
    background: linear-gradient(135deg, #FFB6D9 0%, #FFE5CC 50%, #B4E7CE 100%);
    color: white;
    padding: 2rem 0;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '🌸';
    position: absolute;
    font-size: 3rem;
    opacity: 0.15;
    top: 10%;
    left: 5%;
    animation: float 6s ease-in-out infinite;
}

.header::after {
    content: '🌷';
    position: absolute;
    font-size: 2.5rem;
    opacity: 0.15;
    bottom: 15%;
    right: 8%;
    animation: float 5s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(10deg); }
}

.header-content {
    text-align: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.logo i {
    font-size: 2.5rem;
}

.tagline {
    font-size: 1rem;
    opacity: 0.95;
    font-weight: 400;
}

/* ==========================================
   メインコンテンツ
   ========================================== */
.main-content {
    padding: 2rem 0 4rem;
    min-height: calc(100vh - 200px);
}

/* ==========================================
   タブナビゲーション
   ========================================== */
.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    background: white;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow-x: auto;
}

.tab-btn {
    flex: 1;
    min-width: 150px;
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    border-radius: var(--border-radius-small);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.tab-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-lavender) 100%);
    color: white;
    box-shadow: var(--shadow);
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.tab-btn i {
    font-size: 1.1rem;
}

/* ==========================================
   タブコンテンツ
   ========================================== */
.tab-content {
    position: relative;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

/* ==========================================
   セクションヘッダー
   ========================================== */
.section-header {
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-header h2 i {
    color: var(--primary-color);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ==========================================
   フォームカード
   ========================================== */
.form-card {
    background: linear-gradient(135deg, #FFFBFC 0%, rgba(255, 255, 255, 0.95) 100%);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    border: 2px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    color: var(--primary-color);
}

.required {
    color: var(--danger-color);
    font-size: 0.85rem;
    font-weight: 500;
    margin-left: auto;
}

input[type="text"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-small);
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.3s ease;
    background: var(--bg-primary);
}

input[type="text"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.helper-text {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-small);
}

/* ==========================================
   ボタン
   ========================================== */
.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: var(--border-radius-small);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-lavender) 100%);
    color: white;
    box-shadow: var(--shadow);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--accent-lavender) 100%);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(255, 255, 255, 0.8);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.form-actions {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
}

/* ==========================================
   結果表示エリア
   ========================================== */
.result-container {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-top: 2rem;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.result-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.result-header h3 i {
    color: var(--secondary-color);
}

.result-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.result-section {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-small);
    border-left: 4px solid var(--primary-color);
}

.result-section h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.result-section h4 i {
    color: var(--primary-color);
}

.result-list {
    list-style: none;
    padding: 0;
}

.result-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 0.75rem;
}

.result-list li:last-child {
    border-bottom: none;
}

.result-list li::before {
    content: "✓";
    color: var(--secondary-color);
    font-weight: bold;
    flex-shrink: 0;
}

/* ==========================================
   情報ボックス
   ========================================== */
.info-box {
    background: linear-gradient(135deg, #FFE4ED 0%, #E6CCFF 100%);
    border: 2px solid var(--primary-color);
    padding: 1.25rem;
    border-radius: var(--border-radius-small);
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    align-items: start;
    box-shadow: var(--shadow);
}

.info-box i {
    color: var(--primary-dark);
    font-size: 1.5rem;
    flex-shrink: 0;
}

.info-box strong {
    color: var(--primary-dark);
}

/* ==========================================
   バックアップツールバー
   ========================================== */
.backup-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.backup-toolbar .btn {
    flex: 1;
    min-width: 200px;
    justify-content: center;
}

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

.btn-warning:hover {
    background: #D97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ==========================================
   検索コンテナ
   ========================================== */
.search-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.search-box {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-small);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-sm);
}

.search-box i {
    color: var(--text-light);
    margin-right: 0.75rem;
}

.search-box input {
    border: none;
    padding: 0;
    flex: 1;
}

.search-box input:focus {
    box-shadow: none;
}

.filter-box {
    min-width: 200px;
}

.filter-box select {
    height: 100%;
    box-shadow: var(--shadow-sm);
}

/* ==========================================
   ナレッジタブ
   ========================================== */
.knowledge-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.knowledge-tab-btn {
    padding: 0.75rem 1.5rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-small);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

/* ==========================================
   ナレッジリスト
   ========================================== */
.knowledge-list {
    display: grid;
    gap: 1.5rem;
}

.knowledge-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
    border-left: 4px solid var(--primary-color);
}

.knowledge-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.knowledge-card-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.knowledge-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.knowledge-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.knowledge-card-meta span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.knowledge-card-content {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.knowledge-card-actions {
    display: flex;
    gap: 0.5rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-primary {
    background: #EEF2FF;
    color: var(--primary-color);
}

.badge-secondary {
    background: #F0FDF4;
    color: var(--secondary-color);
}

/* ==========================================
   空の状態
   ========================================== */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.empty-state .small {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ==========================================
   フッター
   ========================================== */
.footer {
    background: white;
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* ==========================================
   レスポンシブ
   ========================================== */
@media (max-width: 768px) {
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        min-width: 100%;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .filter-box {
        min-width: 100%;
    }
    
    .result-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .form-card {
        padding: 1.5rem;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .logo i {
        font-size: 2rem;
    }
}

/* ==========================================
   ユーティリティ
   ========================================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

/* ==========================================
   使い方ページ
   ========================================== */
.howto-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.howto-card {
    background: linear-gradient(135deg, #FFFBFC 0%, #FFF5F7 100%);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    cursor: pointer;
    transition: all 0.4s ease;
    border: 3px solid var(--border-color);
}

.howto-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
    background: linear-gradient(135deg, #FFE4ED 0%, #FFD6E7 100%);
}

.howto-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.howto-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.howto-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.howto-flow {
    margin-top: 2rem;
}

.flow-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.flow-header h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.flow-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.flow-step {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border-left: 5px solid var(--primary-color);
    transition: all 0.3s ease;
}

.flow-step:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(5px);
}

.step-number {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.step-content h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.step-content h4 i {
    color: var(--primary-color);
}

.step-content > p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.step-detail {
    background: var(--bg-tertiary);
    padding: 1.25rem;
    border-radius: var(--border-radius-small);
    margin-top: 1rem;
}

.step-detail strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.step-detail ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.step-detail ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
}

.step-detail ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
}

.step-action {
    margin-top: 1rem;
    text-align: center;
}

.note {
    color: var(--text-secondary);
    font-style: italic;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-small);
    border-left: 3px solid var(--info-color);
}

.flow-arrow {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: bold;
    margin: 0.5rem 0;
}

.quick-start {
    background: linear-gradient(135deg, #FFE4ED 0%, #E6CCFF 50%, #B4E7CE 100%);
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-top: 3rem;
    border: 3px solid rgba(255, 255, 255, 0.6);
    box-shadow: var(--shadow-lg);
}

.quick-start h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.quick-start-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.quick-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius-small);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

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

.quick-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.quick-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.quick-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==========================================
   ナレッジ検索ページ
   ========================================== */
.search-method-tabs,
.search-methods {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.search-method-btn {
    flex: 1;
    padding: 1rem;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-small);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.search-method-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.search-method-btn.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-lavender) 100%);
    color: white;
    border-color: var(--primary-color);
}

.search-panel {
    display: none;
}

.search-panel.active {
    display: block;
}

.search-results {
    margin-top: 2rem;
}

.search-result-item {
    background: linear-gradient(135deg, #FFFBFC 0%, rgba(255, 255, 255, 0.95) 100%);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
}

.search-result-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.knowledge-number {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-lavender) 100%);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.result-item-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.result-item-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.result-item-preview {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.result-item-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.select-checkbox {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.select-checkbox input[type="checkbox"] {
    width: 24px;
    height: 24px;
    cursor: pointer;
}

/* ==========================================
   ユーティリティ
   ========================================== */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }