/* ========================================
   リセット & 基本スタイル
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #64748b;
    --danger-color: #ef4444;
    --danger-hover: #dc2626;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
}

/* ========================================
   レイアウト
   ======================================== */
.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 100%;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header h1 i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ========================================
   サイドバー
   ======================================== */
.sidebar {
    width: 320px;
    background-color: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-group select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    background-color: var(--bg-primary);
}

.project-list {
    list-style: none;
    overflow-y: auto;
    flex: 1;
}

.project-item {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color 0.2s;
}

.project-item:hover {
    background-color: var(--bg-tertiary);
}

.project-item.active {
    background-color: var(--bg-tertiary);
    border-left: 3px solid var(--primary-color);
}

.project-item-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-item-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ========================================
   コンテンツエリア
   ======================================== */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
}

.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-secondary);
    text-align: center;
}

.welcome-screen i {
    color: var(--border-color);
    margin-bottom: 1rem;
}

.welcome-screen h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-detail {
    max-width: 1400px;
    margin: 0 auto;
}

/* ========================================
   プロジェクト情報
   ======================================== */
.project-info {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.project-info-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.project-info h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.project-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.project-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

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

/* ========================================
   ステータスバッジ
   ======================================== */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.未着手 {
    background-color: #fee2e2;
    color: #991b1b;
}

.status-badge.進行中 {
    background-color: #dbeafe;
    color: #1e40af;
}

.status-badge.完了 {
    background-color: #d1fae5;
    color: #065f46;
}

/* ========================================
   スクリーンショットセクション
   ======================================== */
.screenshots-section {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.section-header h3,
.section-header h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

.section-header i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.screenshot-filter {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.screenshot-filter label {
    font-size: 0.875rem;
    font-weight: 500;
}

.screenshot-filter select {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    background-color: var(--bg-primary);
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.screenshot-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.screenshot-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background-color: var(--bg-tertiary);
}

.screenshot-card-content {
    padding: 1rem;
}

.screenshot-card-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.screenshot-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.screenshot-type {
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-primary);
    border-radius: 0.25rem;
    font-weight: 500;
}

/* ========================================
   ボタン
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

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

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

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

.btn-secondary:hover {
    background-color: #475569;
}

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

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

.btn-sm {
    padding: 0.375rem 0.875rem;
    font-size: 0.8125rem;
}

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

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-primary);
    border-radius: 0.5rem;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-large {
    max-width: 700px;
}

.modal-xlarge {
    max-width: 1200px;
}

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

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

/* ========================================
   フォーム
   ======================================== */
form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.required {
    color: var(--danger-color);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* ========================================
   スクリーンショット詳細
   ======================================== */
.screenshot-detail-content {
    display: flex;
    gap: 2rem;
    padding: 1.5rem;
}

.screenshot-detail-left {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.screenshot-detail-left img {
    max-width: 100%;
    height: auto;
    border-radius: 0.5rem;
    box-shadow: var(--shadow-md);
}

.screenshot-detail-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.detail-info {
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-radius: 0.5rem;
}

.detail-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.detail-info p {
    margin-bottom: 0.5rem;
}

.detail-info strong {
    font-weight: 600;
}

.detail-notes {
    color: var(--text-secondary);
    line-height: 1.6;
}

.detail-actions {
    display: flex;
    gap: 0.75rem;
}

/* ========================================
   イベントセクション
   ======================================== */
.events-section {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.events-list {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow: hidden;
}

.event-item {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

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

.event-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.event-item-title {
    font-weight: 600;
}

.event-item-type {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 0.25rem;
}

.event-item-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.event-item-properties {
    font-size: 0.75rem;
    padding: 0.5rem;
    background-color: var(--bg-primary);
    border-radius: 0.25rem;
    font-family: 'Courier New', monospace;
    overflow-x: auto;
}

.event-item-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.empty-state {
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
}

/* ========================================
   レスポンシブ
   ======================================== */
@media (max-width: 1024px) {
    .screenshot-detail-content {
        flex-direction: column;
    }

    .screenshot-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        max-height: 300px;
    }

    .main-content {
        flex-direction: column;
    }

    .header-content {
        padding: 1rem;
    }

    .header h1 {
        font-size: 1.25rem;
    }

    .content-area {
        padding: 1rem;
    }

    .project-info-header {
        flex-direction: column;
        gap: 1rem;
    }

    .screenshot-grid {
        grid-template-columns: 1fr;
    }
}