/* ベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* スクリーン管理 */
.screen {
    min-height: 100vh;
}

.screen.hidden {
    display: none;
}

/* 今日の目的セクション */
.daily-purpose-section {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--surface);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.purpose-setting-ui h3 {
    font-size: 16px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.purpose-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.purpose-btn {
    padding: 12px 16px;
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.2s;
}

.purpose-btn:hover {
    border-color: var(--primary-color);
    background: #f0f9ff;
}

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

.other-purpose-input {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.other-purpose-input input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
}

.purpose-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.purpose-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.purpose-value {
    flex: 1;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    padding: 8px 12px;
    background: #f0f9ff;
    border-radius: 6px;
    border-left: 4px solid var(--primary-color);
}

/* ログイン画面 */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 40px;
    background: var(--surface);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.login-container h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-size: 2rem;
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* タブ */
.login-tabs {
    display: flex;
    margin-bottom: 24px;
    border-bottom: 2px solid var(--border);
}

.tab-btn {
    flex: 1;
    padding: 12px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    transition: all 0.3s;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    margin-bottom: -2px;
}

.tab-content {
    display: none;
}

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

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ボタン */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    width: 100%;
}

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

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

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

.btn-small {
    padding: 8px 16px;
    font-size: 12px;
}

.btn-oauth {
    width: 100%;
    padding: 12px;
    margin-bottom: 12px;
    background-color: white;
    border: 1px solid var(--border);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

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

.oauth-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-color);
    color: white;
    border-radius: 4px;
    font-weight: bold;
}

.toggle-auth {
    text-align: center;
    margin-top: 16px;
    color: var(--text-secondary);
}

.toggle-auth a {
    color: var(--primary-color);
    text-decoration: none;
}

.toggle-auth a:hover {
    text-decoration: underline;
}

.hidden {
    display: none !important;
}

.message {
    margin-top: 16px;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
}

.message.error {
    background-color: #fef2f2;
    color: var(--danger-color);
}

.message.success {
    background-color: #f0fdf4;
    color: var(--success-color);
}

/* アプリヘッダー */
.app-header {
    background: var(--surface);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.header-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-email {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ナビゲーション */
.app-nav {
    background: var(--surface);
    padding: 0 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 8px;
}

.nav-btn {
    padding: 16px 20px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: all 0.3s;
}

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

.nav-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* メインコンテンツ */
.app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

.view h2 {
    margin-bottom: 24px;
    color: var(--text-primary);
}

/* 統計カード */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--surface);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ダッシュボードセクション */
.dashboard-sections {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.dashboard-section {
    background: var(--surface);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.dashboard-section h3 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.current-session {
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.current-session.active {
    background: #f0fdf4;
    color: var(--success-color);
}

.session-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.session-buttons button {
    flex: 1;
    min-width: 120px;
}

.top-apps {
    min-height: 100px;
}

.top-app-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--background);
    border-radius: 8px;
    margin-bottom: 8px;
}

.top-app-name {
    font-weight: 500;
}

.top-app-time {
    color: var(--text-secondary);
    font-size: 14px;
}

/* タイムライン */
.timeline-controls {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    align-items: center;
}

.date-input {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
}

.timeline-container {
    background: var(--surface);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    min-height: 300px;
}

.timeline-item {
    padding: 16px;
    border-left: 3px solid var(--primary-color);
    margin-bottom: 16px;
    background: var(--background);
    border-radius: 0 8px 8px 0;
}

.timeline-item.focus {
    border-left-color: var(--success-color);
}

.timeline-item.distraction {
    border-left-color: var(--danger-color);
}

.timeline-item.break {
    border-left-color: var(--warning-color);
}

.timeline-time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.timeline-app {
    font-weight: 500;
    margin-bottom: 4px;
}

.timeline-type {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    margin-bottom: 8px;
}

.timeline-type.focus {
    background: #f0fdf4;
    color: var(--success-color);
}

.timeline-type.distraction {
    background: #fef2f2;
    color: var(--danger-color);
}

.timeline-type.break {
    background: #fffbeb;
    color: var(--warning-color);
}

.timeline-notes {
    color: var(--text-secondary);
    font-size: 14px;
}

/* 行動ストーリー */
.story-controls {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    align-items: center;
}

.story-container {
    background: var(--surface);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    min-height: 300px;
}

.story-content {
    line-height: 1.8;
    color: var(--text-primary);
}

.story-content p {
    margin-bottom: 16px;
}

.story-content h3 {
    margin: 24px 0 12px;
    color: var(--primary-color);
}

.loading {
    text-align: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

/* モーダル */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--surface);
    padding: 32px;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-content h3 {
    margin-bottom: 24px;
    color: var(--text-primary);
}

.modal-buttons {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.modal-buttons button {
    flex: 1;
}

/* グローバルメッセージ */
.global-message {
    position: fixed;
    top: 24px;
    right: 24px;
    padding: 16px 24px;
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    max-width: 400px;
}

.global-message.success {
    border-left: 4px solid var(--success-color);
}

.global-message.error {
    border-left: 4px solid var(--danger-color);
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .login-container {
        margin: 50px auto;
        padding: 24px;
    }
    
    .app-header {
        padding: 12px 16px;
    }
    
    .app-header h1 {
        font-size: 1.2rem;
    }
    
    .user-email {
        display: none;
    }
    
    .app-nav {
        padding: 0 16px;
        overflow-x: auto;
    }
    
    .nav-btn {
        padding: 12px 16px;
        white-space: nowrap;
    }
    
    .app-main {
        padding: 24px 16px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dashboard-sections {
        grid-template-columns: 1fr;
    }
    
    .timeline-controls,
    .story-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .modal-content {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .dashboard-section {
        padding: 16px;
    }
}