/* リセット */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #ecf0f1;
    color: #34495e;
    line-height: 1.6;
}

/* ヘッダー */
.header {
    background-color: #2c3e50;
    color: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    margin: 0;
}

.subtitle {
    font-size: 14px;
    color: #bdc3c7;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-name {
    font-size: 16px;
}

.btn-icon {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 14px;
    padding: 5px 10px;
}

.btn-icon:hover {
    background-color: rgba(255,255,255,0.1);
    border-radius: 4px;
}

/* メインコンテナ */
.main-container {
    display: flex;
    min-height: calc(100vh - 60px);
}

/* サイドバー */
.sidebar {
    width: 250px;
    background-color: #34495e;
    color: white;
    padding: 20px 0;
    overflow-y: auto;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: #ecf0f1;
    text-decoration: none;
    transition: background-color 0.3s;
}

.nav-item:hover {
    background-color: rgba(255,255,255,0.1);
}

.nav-item.active {
    background-color: #3498db;
    border-left: 4px solid #2ecc71;
}

.nav-icon {
    font-size: 20px;
}

.nav-text {
    font-size: 16px;
}

.nav-section {
    margin: 10px 0;
}

.nav-section-title {
    padding: 12px 20px;
    font-size: 14px;
    color: #95a5a6;
    font-weight: bold;
    text-transform: uppercase;
}

.nav-sub {
    padding-left: 40px;
}

/* メインコンテンツ */
.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* ページコンテンツ */
#pageContent {
    max-width: 1200px;
    margin: 0 auto;
}

/* カード */
.card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 20px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #ecf0f1;
}

.card-title {
    font-size: 24px;
    font-weight: bold;
    color: #2c3e50;
}

.card-body {
    font-size: 16px;
}

/* グリッド */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* フォーム */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 8px;
    color: #2c3e50;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 10px;
    font-size: 16px;
    border: 1px solid #bdc3c7;
    border-radius: 4px;
    font-family: inherit;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

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

.form-hint {
    font-size: 12px;
    color: #7f8c8d;
    margin-top: 5px;
}

/* ボタン */
.btn {
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
}

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

.btn-primary:hover {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: white;
    color: #3498db;
    border: 2px solid #3498db;
}

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

.btn-success {
    background-color: #2ecc71;
    color: white;
}

.btn-success:hover {
    background-color: #27ae60;
}

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

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

/* 進捗バー */
.progress-bar {
    width: 100%;
    height: 20px;
    background-color: #ecf0f1;
    border-radius: 10px;
    overflow: hidden;
    margin: 10px 0;
}

.progress-fill {
    height: 100%;
    background-color: #3498db;
    transition: width 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    font-weight: bold;
}

/* ステータスバッジ */
.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 12px;
    font-weight: bold;
    border-radius: 12px;
}

.badge-success {
    background-color: #2ecc71;
    color: white;
}

.badge-warning {
    background-color: #f39c12;
    color: white;
}

.badge-info {
    background-color: #3498db;
    color: white;
}

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

/* リスト */
.list {
    list-style: none;
}

.list-item {
    padding: 15px;
    border-bottom: 1px solid #ecf0f1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.list-item:hover {
    background-color: #f8f9fa;
}

/* テーブル */
.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ecf0f1;
}

.table th {
    background-color: #f8f9fa;
    font-weight: bold;
    color: #2c3e50;
}

.table tr:hover {
    background-color: #f8f9fa;
}

/* トースト通知 */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: #2ecc71;
    color: white;
    padding: 15px 20px;
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s;
    z-index: 2000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* 統計カード */
.stat-card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 20px;
    text-align: center;
}

.stat-value {
    font-size: 36px;
    font-weight: bold;
    color: #3498db;
    margin: 10px 0;
}

.stat-label {
    font-size: 14px;
    color: #7f8c8d;
}

/* タイムライン */
.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: #3498db;
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -25px;
    top: 5px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: #3498db;
    border: 3px solid white;
    box-shadow: 0 0 0 2px #3498db;
}

.timeline-year {
    font-size: 14px;
    font-weight: bold;
    color: #3498db;
    margin-bottom: 5px;
}

.timeline-event {
    font-size: 16px;
    color: #2c3e50;
}

/* レスポンシブ */
@media (max-width: 768px) {
    .main-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        padding: 10px 0;
    }

    .nav-item {
        padding: 10px 15px;
    }

    .main-content {
        padding: 15px;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }

    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* ユーティリティ */
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-20 { margin-bottom: 20px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.flex { display: flex; }
.flex-between { justify-content: space-between; }
.flex-center { justify-content: center; align-items: center; }
.gap-10 { gap: 10px; }
.gap-20 { gap: 20px; }