/* ===================================
   ヒヤリハット報告システム - CSS
   モバイルファーストデザイン
   =================================== */

/* リセット & ベース設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --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: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* コンテナ */
.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ヘッダー */
.header {
    background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
    color: white;
    padding: 0.4rem 1rem;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

/* 管理者メニューを初期状態で非表示（チラつき防止） */
.nav-link#admin-link,
.nav-link#admin-reports-link,
.nav-link#admin-users-link,
.nav-link#import-data-link,
.nav-link#data-fix-link {
    display: none;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* トップページに戻るリンク */
.back-to-top {
    color: white;
    text-decoration: none;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 0.375rem;
    transition: background 0.2s;
    white-space: nowrap;
    flex-shrink: 0;
    align-self: center;
}

.back-to-top:hover {
    background: rgba(255, 255, 255, 0.25);
}

.logo {
    font-size: 1.1rem;
    font-weight: 700;
    margin: 0;
    white-space: nowrap;
    flex-shrink: 0;
    align-self: center;
}

.header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.25rem;
    margin-left: auto;
    flex-shrink: 0;
}

/* ユーザー情報表示 */
.user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.8rem;
}

.user-company {
    font-weight: 600;
    color: #fff;
}

.user-email {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.75rem;
}

.btn-change-password {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.75rem;
    transition: background 0.2s;
    text-decoration: none;
    white-space: nowrap;
}

.btn-change-password:hover {
    background: rgba(255, 255, 255, 0.3);
}

.btn-logout {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.2s;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.3);
}

.nav {
    display: flex;
    gap: 0.3rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* モバイル対応 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .header-right {
        width: 100%;
        align-items: flex-start;
    }
    
    .user-info {
        width: 100%;
        justify-content: space-between;
    }
    
    .user-company,
    .user-email {
        font-size: 0.75rem;
    }
    
    .nav {
        width: 100%;
    }
}

.nav-link {
    padding: 0.4rem 0.75rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    color: white;
    text-decoration: none;
    font-size: 0.875rem;
    white-space: nowrap;
    transition: background 0.2s;
}

.nav-link:hover,
.nav-link.active {
    background: rgba(255, 255, 255, 0.2);
}

/* メインコンテンツ */
.main-content {
    flex: 1;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 1rem;
}

/* カード */
.card {
    background: var(--card-bg);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

/* セクションタイトル */
.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.section-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.subsection-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
    padding-left: 0.75rem;
}

/* ステップインジケーター */
.step-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    padding: 1rem 0;
}

.step {
    padding: 0.5rem 1rem;
    background: var(--border-color);
    color: var(--text-secondary);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
}

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

.step.completed {
    background: var(--success-color);
    color: white;
}

.step-divider {
    margin: 0 0.5rem;
    color: var(--border-color);
}

/* ボタングループ */
.button-group {
    display: grid;
    gap: 1rem;
    margin-bottom: 1rem;
}

/* ボタン */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    display: inline-block;
    text-decoration: none;
}

.btn-large {
    padding: 1.25rem 2rem;
    font-size: 1.125rem;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.btn-large small {
    font-size: 0.875rem;
    font-weight: 400;
    margin-top: 0.5rem;
    opacity: 0.8;
}

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

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

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-outline {
    background: white;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover,
.btn-outline.active {
    border-color: var(--primary-color);
    background: #eff6ff;
    color: var(--primary-color);
}

.category-btn {
    font-size: 1.125rem;
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.required::after {
    content: " *";
    color: var(--danger-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* チェックボックスとラジオボタン */
.checkbox-group,
.radio-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkbox-label,
.radio-label {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 400;
}

.checkbox-label:hover,
.radio-label:hover {
    background: var(--bg-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"],
.radio-label input[type="radio"] {
    margin-right: 0.75rem;
    width: 1.25rem;
    height: 1.25rem;
    cursor: pointer;
}

/* カテゴリ選択ボタングリッド */
.category-button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.category-select-btn {
    padding: 1rem;
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 0.75rem;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    color: var(--text-primary);
}

.category-select-btn:hover {
    border-color: var(--primary-color);
    background: #eff6ff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

.category-select-btn.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.category-select-btn.selected:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
}

.checkbox-label input[type="checkbox"]:checked,
.radio-label input[type="radio"]:checked {
    accent-color: var(--primary-color);
}

.indent {
    margin-left: 1.5rem;
    border-left: 3px solid var(--primary-color);
    padding-left: 1rem;
}

/* 評価（星）*/
.rating-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.rating-label {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.rating-label:hover {
    background: var(--bg-color);
    border-color: var(--warning-color);
}

.rating-label input[type="radio"] {
    display: none;
}

.rating-label input[type="radio"]:checked ~ .rating-star {
    color: var(--warning-color);
}

.rating-star {
    font-size: 1.25rem;
    margin-right: 0.5rem;
    color: var(--border-color);
    transition: color 0.2s;
}

.rating-label:hover .rating-star {
    color: var(--warning-color);
}

.rating-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* フォームアクション */
.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.form-actions .btn {
    flex: 1;
    min-width: 150px;
}

/* 詳細セクション */
.detail-section,
.cause-section,
.action-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

/* 条件展開セクション */
.conditional-section {
    margin: 1rem 0;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.5rem;
}

/* 成功メッセージ */
.success-card {
    text-align: center;
    padding: 3rem 1.5rem;
}

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

.success-note {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 1rem;
}

/* フッター */
.footer {
    background: var(--text-primary);
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: auto;
    font-size: 0.875rem;
}

/* ユーティリティクラス */
.hidden {
    display: none !important;
}

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

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

/* ローディングスピナー */
.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

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

/* タブレット以上 */
@media (min-width: 768px) {
    .header {
        padding: 1.5rem 2rem;
    }

    .logo {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }

    .nav-link {
        font-size: 1rem;
    }

    .main-content {
        padding: 2rem;
    }

    .card {
        padding: 2rem;
    }

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

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

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

    .rating-group {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-button-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* デスクトップ */
@media (min-width: 1024px) {
    .main-content {
        padding: 3rem 2rem;
    }

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

    .form-actions {
        justify-content: flex-end;
    }

    .form-actions .btn {
        flex: 0 0 auto;
        min-width: 180px;
    }
}

/* プリント用 */
@media print {
    .header,
    .footer,
    .nav,
    .form-actions {
        display: none;
    }

    .card {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}