/* --- Базовые стили и сброс --- */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #333;
            line-height: 1.5;
            min-height: 100vh;
            padding: 16px;
        }

        /* --- Контейнер формы --- */
        .form-container {
            max-width: 600px;
            margin: 0 auto;
            background: white;
            border-radius: 16px;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }

        .form-header {
            padding: 24px 20px;
            text-align: left;
            border-bottom: 1px solid #e8eaed;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
        }

        h2 {
            font-weight: 600;
            font-size: 1.5rem;
            color: #1d1f21;
            padding: 0 0 20px 0;
        }

        /* --- Сворачиваемая инструкция --- */
        .instruction-container {
            background: #fbfbfb;
            border-radius: 12px;
            margin-top: 8px;
            overflow: hidden;
        }
        
        .instruction-header {
            padding: 12px 16px;
            background: #f0f2f5;
            cursor: pointer;
            user-select: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: background 0.2s ease;
        }
        
        .instruction-header:hover {
            background: #e8eaed;
        }
        
        .instruction-header strong {
            color: #333;
            font-size: 0.9rem;
        }
        
        .instruction-arrow {
            font-size: 1.2rem;
            transition: transform 0.3s ease;
            color: #666;
        }
        
        .instruction-arrow.collapsed {
            transform: rotate(-90deg);
        }
        
        .instruction-content {
            padding: 12px 16px;
            font-size: 0.85rem;
            color: #333;
            border-top: 1px solid #e8eaed;
            transition: all 0.3s ease;
        }
        
        .instruction-content.collapsed {
            display: none;
        }
        
        .instruction-content a {
            color: #007aff;
            text-decoration: none;
        }
        
        .instruction-content a:hover {
            text-decoration: underline;
        }

        /* --- Поля ввода --- */
        .form-group {
            padding: 16px 20px;
            border-bottom: 1px solid #f0f2f5;
            display: flex;
            align-items: center;
            gap: 12px;
            display: none;
        }

        label {
            width: 100px;
            font-size: 0.9rem;
            color: #666;
            font-weight: 500;
        }

        input {
            flex: 1;
            height: 44px;
            padding: 0 16px;
            border: 1px solid #d0d5db;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s ease;
            background: #fafbfc;
            width: 100%;
        }

        input:focus {
            outline: none;
            border-color: #007aff;
            background: white;
            box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
        }

        /* --- Блок загрузки файла --- */
        .file-upload-group {
            padding: 16px 20px;
            border-bottom: 1px solid #f0f2f5;
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        
        .file-upload-group label {
            width: auto;
        }
        
        .file-input {
            flex: 1;
            padding: 8px;
            border: 1px dashed #007aff;
            border-radius: 10px;
            background: #f0f4ff;
            cursor: pointer;
            width: auto;
        }
        
        .file-input:hover {
            background: #e0e8ff;
        }
        
        .file-info {
            font-size: 0.75rem;
            color: #666;
            margin-left: auto;
            background: #f0f2f5;
            padding: 6px 12px;
            border-radius: 20px;
        }

        /* --- Секция элементов (строки) --- */
        .items {
            padding: 20px;
            max-height: 400px;
            overflow-y: auto;
        }

        .item-row {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 16px;
            align-items: flex-start;
            position: relative;
        }

        .item-row input {
            flex: 1;
            height: 44px;
            padding: 0 16px;
            border: 1px solid #d0d5db;
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s ease;
            background: #fafbfc;
        }

        /* Стили для поля ввода с ошибкой */
        .item-row .name-input-error {
            border-color: #e53e3e !important;
            background-color: #fef6f6 !important;
            box-shadow: 0 0 0 2px rgba(229, 62, 62, 0.1);
        }

        .duplicate-error {
            border-color: #e53e3e !important;
            background-color: #fef6f6 !important;
        }

        /* Стили для подсказки-сноски */
        .field-hint {
            display: block;
            width: 100%;
            color: #e53e3e;
            font-size: 0.7rem;
            margin-top: 4px;
            margin-left: 4px;
            padding: 4px 8px;
            background: #fff5f5;
            border-radius: 6px;
            border-left: 3px solid #e53e3e;
            animation: slideDown 0.3s ease;
            font-weight: normal;
        }

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

        /* --- Кнопки --- */
        .button-group {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            border-top: 1px solid #f0f2f5;
            background: rgba(255,255,255,0.6);
        }

        .button-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }

        .button-row:first-child {
            justify-content: space-between;
        }

        .button-row:last-child {
            justify-content: flex-end;
        }

        button {
            height: 48px;
            padding: 0 24px;
            border-radius: 12px;
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: none;
        }

        .btn-primary { 
            background:#007aff; 
            color:#fff; 
        }
        .btn-primary:hover {
            background:#005bb5;
            transform: translateY(-1px);
        }

        .btn-outline { 
            background:none; 
            color:#555; 
            border: 1px solid #d0d5db; 
            width: stretch;
        }
        .btn-outline:hover {
            background:#f8f9fa;
            border-color:#007aff;
        }

        button.loading { 
            opacity:.7; 
            pointer-events:none; 
        }

        .counter {
            font-size: 0.85rem;
            color: #888;
            padding: 11px 16px;
            border-radius: 20px;
            border: 1px solid #e9ecef;
            background: #f8f9fa;
            flex: 1;
            text-align: center;
        }

        .remove-btn {
            background: none;
            border: none;
            color: #e53e3e;
            font-size: 1.2rem;
            cursor: pointer;
            padding: 0 8px;
            height: 44px;
            width: auto;
            transition: all 0.2s ease;
        }

        .remove-btn:hover {
            color: #c53030;
            transform: scale(1.1);
        }

        /* Чекбокс в группе кнопок */
        .checkbox-wrapper {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: #555;
            cursor: pointer;
            padding: 8px 12px;
            background: #f8f9fa;
            border-radius: 10px;
            border: 1px solid #e9ecef;
            transition: all 0.2s ease;
            height: 48px;
        }

        .checkbox-wrapper:hover {
            background: #f0f4ff;
            border-color: #007aff;
        }

        .checkbox-wrapper input {
            width: 18px;
            height: 18px;
            margin: 0;
            cursor: pointer;
        }

        /* --- Десктоп (ширина > 600px) --- */
        @media (min-width: 601px) {
            .button-row:first-child {
                justify-content: space-between;
            }
            .button-row:last-child {
                justify-content: space-between;
                gap: 16px;
            }
            .counter {
                flex: 0 1 auto;
                min-width: 140px;
                width: stretch;
            }
            .checkbox-wrapper {
                min-width: 200px;
                justify-content: center;
            }
        }

        /* --- Мобильные устройства (ширина ≤ 600px) --- */
        @media (max-width: 600px) {
            .button-row {
                justify-content: center !important;
                flex-direction: column;
                width: 100%;
            }
            .button-row:first-child .btn-outline {
                width: 100%;
            }
            .counter {
                width: 100%;
                text-align: center;
                box-sizing: border-box;
            }
            .button-row:last-child {
                flex-direction: row;
                flex-wrap: wrap;
                justify-content: space-between;
            }
            .checkbox-wrapper {
                flex: 1;
                justify-content: center;
                min-width: 120px;
            }
            .btn-primary {
                flex: 1;
                justify-content: center;
            }
        }

        /* --- Блок результата --- */
        .result-block {
            padding: 20px;
            text-align: center;
            display: none;
            border-top: 1px solid #f0f2f5;
            background: #fafbfc;
        }
        
        .loading-gif {
            width: 50px;
            display: block;
            margin: 0 auto;
        }
        
        .success-message {
            color: #2e7d32;
            background: #e8f5e9;
            padding: 16px;
            border-radius: 12px;
            margin-bottom: 16px;
        }
        
        .download-link {
            display: inline-block;
            background: #007aff;
            color: white;
            text-decoration: none;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 500;
            transition: all 0.2s ease;
            margin-top: 8px;
			width: stretch;
        }
        
        .download-link:hover {
            background: #005bb5;
            transform: translateY(-1px);
        }

        .global-duplicate-error {
            background-color: #fed7d7;
            color: #c53030;
            padding: 10px 16px;
            border-radius: 8px;
            margin: 0 20px 16px 20px;
            font-size: 0.85rem;
            display: none;
            text-align: center;
        }
        
        .error-status-block {
            background-color: #fff5f5;
            border-left: 4px solid #e53e3e;
            padding: 16px;
            border-radius: 8px;
            text-align: left;
            margin-top: 16px;
        }

        .error-status-block strong {
            color: #c53030;
            display: block;
            margin-bottom: 8px;
            font-size: 1rem;
        }

        .error-status-block .error-message-text {
            color: #742a2a;
            font-size: 0.9rem;
            margin-bottom: 12px;
            word-break: break-word;
            font-family: monospace;
            background: #fff;
            padding: 8px;
            border-radius: 4px;
        }
        
        .retry-button {
            background: #e53e3e;
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 8px;
            cursor: pointer;
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.2s ease;
            width: auto;
            height: auto;
        }

        .retry-button:hover {
            background: #c53030;
            transform: translateY(-1px);
        }